bmake.cat1 revision 249033
1236769SobrienMAKE(1) NetBSD General Commands Manual MAKE(1) 2236769Sobrien 3236769SobrienNNAAMMEE 4236769Sobrien bbmmaakkee -- maintain program dependencies 5236769Sobrien 6236769SobrienSSYYNNOOPPSSIISS 7236769Sobrien bbmmaakkee [--BBeeiikkNNnnqqrrssttWWXX] [--CC _d_i_r_e_c_t_o_r_y] [--DD _v_a_r_i_a_b_l_e] [--dd _f_l_a_g_s] 8236769Sobrien [--ff _m_a_k_e_f_i_l_e] [--II _d_i_r_e_c_t_o_r_y] [--JJ _p_r_i_v_a_t_e] [--jj _m_a_x___j_o_b_s] 9236769Sobrien [--mm _d_i_r_e_c_t_o_r_y] [--TT _f_i_l_e] [--VV _v_a_r_i_a_b_l_e] [_v_a_r_i_a_b_l_e_=_v_a_l_u_e] 10236769Sobrien [_t_a_r_g_e_t _._._.] 11236769Sobrien 12236769SobrienDDEESSCCRRIIPPTTIIOONN 13236769Sobrien bbmmaakkee is a program designed to simplify the maintenance of other pro- 14236769Sobrien grams. Its input is a list of specifications as to the files upon which 15236769Sobrien programs and other files depend. If no --ff _m_a_k_e_f_i_l_e makefile option is 16236769Sobrien given, bbmmaakkee will try to open `_m_a_k_e_f_i_l_e' then `_M_a_k_e_f_i_l_e' in order to find 17236769Sobrien the specifications. If the file `_._d_e_p_e_n_d' exists, it is read (see 18236769Sobrien mkdep(1)). 19236769Sobrien 20236769Sobrien This manual page is intended as a reference document only. For a more 21236769Sobrien thorough description of bbmmaakkee and makefiles, please refer to _P_M_a_k_e _- _A 22236769Sobrien _T_u_t_o_r_i_a_l. 23236769Sobrien 24236769Sobrien bbmmaakkee will prepend the contents of the _M_A_K_E_F_L_A_G_S environment variable to 25236769Sobrien the command line arguments before parsing them. 26236769Sobrien 27236769Sobrien The options are as follows: 28236769Sobrien 29236769Sobrien --BB Try to be backwards compatible by executing a single shell per 30236769Sobrien command and by executing the commands to make the sources of a 31236769Sobrien dependency line in sequence. 32236769Sobrien 33236769Sobrien --CC _d_i_r_e_c_t_o_r_y 34236769Sobrien Change to _d_i_r_e_c_t_o_r_y before reading the makefiles or doing any- 35236769Sobrien thing else. If multiple --CC options are specified, each is inter- 36236769Sobrien preted relative to the previous one: --CC _/ --CC _e_t_c is equivalent to 37236769Sobrien --CC _/_e_t_c. 38236769Sobrien 39236769Sobrien --DD _v_a_r_i_a_b_l_e 40236769Sobrien Define _v_a_r_i_a_b_l_e to be 1, in the global context. 41236769Sobrien 42236769Sobrien --dd _[_-_]_f_l_a_g_s 43236769Sobrien Turn on debugging, and specify which portions of bbmmaakkee are to 44236769Sobrien print debugging information. Unless the flags are preceded by 45236769Sobrien `-' they are added to the _M_A_K_E_F_L_A_G_S environment variable and will 46236769Sobrien be processed by any child make processes. By default, debugging 47236769Sobrien information is printed to standard error, but this can be changed 48236769Sobrien using the _F debugging flag. The debugging output is always 49236769Sobrien unbuffered; in addition, if debugging is enabled but debugging 50236769Sobrien output is not directed to standard output, then the standard out- 51236769Sobrien put is line buffered. _F_l_a_g_s is one or more of the following: 52236769Sobrien 53236769Sobrien _A Print all possible debugging information; equivalent to 54236769Sobrien specifying all of the debugging flags. 55236769Sobrien 56236769Sobrien _a Print debugging information about archive searching and 57236769Sobrien caching. 58236769Sobrien 59236769Sobrien _C Print debugging information about current working direc- 60236769Sobrien tory. 61236769Sobrien 62236769Sobrien _c Print debugging information about conditional evaluation. 63236769Sobrien 64236769Sobrien _d Print debugging information about directory searching and 65236769Sobrien caching. 66236769Sobrien 67236769Sobrien _e Print debugging information about failed commands and 68236769Sobrien targets. 69236769Sobrien 70236769Sobrien _F[++]_f_i_l_e_n_a_m_e 71236769Sobrien Specify where debugging output is written. This must be 72236769Sobrien the last flag, because it consumes the remainder of the 73236769Sobrien argument. If the character immediately after the `F' 74236769Sobrien flag is `+', then the file will be opened in append mode; 75236769Sobrien otherwise the file will be overwritten. If the file name 76236769Sobrien is `stdout' or `stderr' then debugging output will be 77236769Sobrien written to the standard output or standard error output 78236769Sobrien file descriptors respectively (and the `+' option has no 79236769Sobrien effect). Otherwise, the output will be written to the 80236769Sobrien named file. If the file name ends `.%d' then the `%d' is 81236769Sobrien replaced by the pid. 82236769Sobrien 83236769Sobrien _f Print debugging information about loop evaluation. 84236769Sobrien 85236769Sobrien _g_1 Print the input graph before making anything. 86236769Sobrien 87236769Sobrien _g_2 Print the input graph after making everything, or before 88236769Sobrien exiting on error. 89236769Sobrien 90236769Sobrien _g_3 Print the input graph before exiting on error. 91236769Sobrien 92236769Sobrien _j Print debugging information about running multiple 93236769Sobrien shells. 94236769Sobrien 95236769Sobrien _l Print commands in Makefiles regardless of whether or not 96236769Sobrien they are prefixed by `@' or other "quiet" flags. Also 97236769Sobrien known as "loud" behavior. 98236769Sobrien 99236769Sobrien _M Print debugging information about "meta" mode decisions 100236769Sobrien about targets. 101236769Sobrien 102236769Sobrien _m Print debugging information about making targets, includ- 103236769Sobrien ing modification dates. 104236769Sobrien 105236769Sobrien _n Don't delete the temporary command scripts created when 106236769Sobrien running commands. These temporary scripts are created in 107236769Sobrien the directory referred to by the TMPDIR environment vari- 108236769Sobrien able, or in _/_t_m_p if TMPDIR is unset or set to the empty 109236769Sobrien string. The temporary scripts are created by mkstemp(3), 110236769Sobrien and have names of the form _m_a_k_e_X_X_X_X_X_X. _N_O_T_E: This can 111236769Sobrien create many files in TMPDIR or _/_t_m_p, so use with care. 112236769Sobrien 113236769Sobrien _p Print debugging information about makefile parsing. 114236769Sobrien 115236769Sobrien _s Print debugging information about suffix-transformation 116236769Sobrien rules. 117236769Sobrien 118236769Sobrien _t Print debugging information about target list mainte- 119236769Sobrien nance. 120236769Sobrien 121240330Smarcel _V Force the --VV option to print raw values of variables. 122240330Smarcel 123236769Sobrien _v Print debugging information about variable assignment. 124236769Sobrien 125236769Sobrien _x Run shell commands with --xx so the actual commands are 126236769Sobrien printed as they are executed. 127236769Sobrien 128236769Sobrien --ee Specify that environment variables override macro assignments 129236769Sobrien within makefiles. 130236769Sobrien 131236769Sobrien --ff _m_a_k_e_f_i_l_e 132236769Sobrien Specify a makefile to read instead of the default `_m_a_k_e_f_i_l_e'. If 133236769Sobrien _m_a_k_e_f_i_l_e is `--', standard input is read. Multiple makefiles may 134236769Sobrien be specified, and are read in the order specified. 135236769Sobrien 136236769Sobrien --II _d_i_r_e_c_t_o_r_y 137236769Sobrien Specify a directory in which to search for makefiles and included 138236769Sobrien makefiles. The system makefile directory (or directories, see 139236769Sobrien the --mm option) is automatically included as part of this list. 140236769Sobrien 141236769Sobrien --ii Ignore non-zero exit of shell commands in the makefile. Equiva- 142236769Sobrien lent to specifying `--' before each command line in the makefile. 143236769Sobrien 144236769Sobrien --JJ _p_r_i_v_a_t_e 145236769Sobrien This option should _n_o_t be specified by the user. 146236769Sobrien 147236769Sobrien When the _j option is in use in a recursive build, this option is 148236769Sobrien passed by a make to child makes to allow all the make processes 149236769Sobrien in the build to cooperate to avoid overloading the system. 150236769Sobrien 151236769Sobrien --jj _m_a_x___j_o_b_s 152236769Sobrien Specify the maximum number of jobs that bbmmaakkee may have running at 153236769Sobrien any one time. The value is saved in _._M_A_K_E_._J_O_B_S. Turns compati- 154236769Sobrien bility mode off, unless the _B flag is also specified. When com- 155236769Sobrien patibility mode is off, all commands associated with a target are 156236769Sobrien executed in a single shell invocation as opposed to the tradi- 157236769Sobrien tional one shell invocation per line. This can break traditional 158236769Sobrien scripts which change directories on each command invocation and 159236769Sobrien then expect to start with a fresh environment on the next line. 160236769Sobrien It is more efficient to correct the scripts rather than turn 161236769Sobrien backwards compatibility on. 162236769Sobrien 163236769Sobrien --kk Continue processing after errors are encountered, but only on 164236769Sobrien those targets that do not depend on the target whose creation 165236769Sobrien caused the error. 166236769Sobrien 167236769Sobrien --mm _d_i_r_e_c_t_o_r_y 168236769Sobrien Specify a directory in which to search for sys.mk and makefiles 169236769Sobrien included via the <_f_i_l_e>-style include statement. The --mm option 170236769Sobrien can be used multiple times to form a search path. This path will 171236769Sobrien override the default system include path: /usr/share/mk. Fur- 172236769Sobrien thermore the system include path will be appended to the search 173236769Sobrien path used for "_f_i_l_e"-style include statements (see the --II 174236769Sobrien option). 175236769Sobrien 176236769Sobrien If a file or directory name in the --mm argument (or the 177236769Sobrien MAKESYSPATH environment variable) starts with the string ".../" 178236769Sobrien then bbmmaakkee will search for the specified file or directory named 179236769Sobrien in the remaining part of the argument string. The search starts 180236769Sobrien with the current directory of the Makefile and then works upward 181236769Sobrien towards the root of the filesystem. If the search is successful, 182236769Sobrien then the resulting directory replaces the ".../" specification in 183236769Sobrien the --mm argument. If used, this feature allows bbmmaakkee to easily 184236769Sobrien search in the current source tree for customized sys.mk files 185236769Sobrien (e.g., by using ".../mk/sys.mk" as an argument). 186236769Sobrien 187236769Sobrien --nn Display the commands that would have been executed, but do not 188236769Sobrien actually execute them unless the target depends on the .MAKE spe- 189236769Sobrien cial source (see below). 190236769Sobrien 191236769Sobrien --NN Display the commands which would have been executed, but do not 192236769Sobrien actually execute any of them; useful for debugging top-level 193236769Sobrien makefiles without descending into subdirectories. 194236769Sobrien 195236769Sobrien --qq Do not execute any commands, but exit 0 if the specified targets 196236769Sobrien are up-to-date and 1, otherwise. 197236769Sobrien 198236769Sobrien --rr Do not use the built-in rules specified in the system makefile. 199236769Sobrien 200236769Sobrien --ss Do not echo any commands as they are executed. Equivalent to 201236769Sobrien specifying `@@' before each command line in the makefile. 202236769Sobrien 203236769Sobrien --TT _t_r_a_c_e_f_i_l_e 204236769Sobrien When used with the --jj flag, append a trace record to _t_r_a_c_e_f_i_l_e 205236769Sobrien for each job started and completed. 206236769Sobrien 207236769Sobrien --tt Rather than re-building a target as specified in the makefile, 208236769Sobrien create it or update its modification time to make it appear up- 209236769Sobrien to-date. 210236769Sobrien 211236769Sobrien --VV _v_a_r_i_a_b_l_e 212236769Sobrien Print bbmmaakkee's idea of the value of _v_a_r_i_a_b_l_e, in the global con- 213236769Sobrien text. Do not build any targets. Multiple instances of this 214236769Sobrien option may be specified; the variables will be printed one per 215236769Sobrien line, with a blank line for each null or undefined variable. If 216236769Sobrien _v_a_r_i_a_b_l_e contains a `$' then the value will be expanded before 217236769Sobrien printing. 218236769Sobrien 219236769Sobrien --WW Treat any warnings during makefile parsing as errors. 220236769Sobrien 221236769Sobrien --XX Don't export variables passed on the command line to the environ- 222236769Sobrien ment individually. Variables passed on the command line are 223236769Sobrien still exported via the _M_A_K_E_F_L_A_G_S environment variable. This 224236769Sobrien option may be useful on systems which have a small limit on the 225236769Sobrien size of command arguments. 226236769Sobrien 227236769Sobrien _v_a_r_i_a_b_l_e_=_v_a_l_u_e 228236769Sobrien Set the value of the variable _v_a_r_i_a_b_l_e to _v_a_l_u_e. Normally, all 229236769Sobrien values passed on the command line are also exported to sub-makes 230236769Sobrien in the environment. The --XX flag disables this behavior. Vari- 231236769Sobrien able assignments should follow options for POSIX compatibility 232236769Sobrien but no ordering is enforced. 233236769Sobrien 234236769Sobrien There are seven different types of lines in a makefile: file dependency 235236769Sobrien specifications, shell commands, variable assignments, include statements, 236236769Sobrien conditional directives, for loops, and comments. 237236769Sobrien 238236769Sobrien In general, lines may be continued from one line to the next by ending 239236769Sobrien them with a backslash (`\'). The trailing newline character and initial 240236769Sobrien whitespace on the following line are compressed into a single space. 241236769Sobrien 242236769SobrienFFIILLEE DDEEPPEENNDDEENNCCYY SSPPEECCIIFFIICCAATTIIOONNSS 243236769Sobrien Dependency lines consist of one or more targets, an operator, and zero or 244236769Sobrien more sources. This creates a relationship where the targets ``depend'' 245236769Sobrien on the sources and are usually created from them. The exact relationship 246236769Sobrien between the target and the source is determined by the operator that sep- 247236769Sobrien arates them. The three operators are as follows: 248236769Sobrien 249236769Sobrien :: A target is considered out-of-date if its modification time is less 250236769Sobrien than those of any of its sources. Sources for a target accumulate 251236769Sobrien over dependency lines when this operator is used. The target is 252236769Sobrien removed if bbmmaakkee is interrupted. 253236769Sobrien 254236769Sobrien !! Targets are always re-created, but not until all sources have been 255236769Sobrien examined and re-created as necessary. Sources for a target accumu- 256236769Sobrien late over dependency lines when this operator is used. The target 257236769Sobrien is removed if bbmmaakkee is interrupted. 258236769Sobrien 259236769Sobrien :::: If no sources are specified, the target is always re-created. Oth- 260236769Sobrien erwise, a target is considered out-of-date if any of its sources 261236769Sobrien has been modified more recently than the target. Sources for a 262236769Sobrien target do not accumulate over dependency lines when this operator 263236769Sobrien is used. The target will not be removed if bbmmaakkee is interrupted. 264236769Sobrien 265236769Sobrien Targets and sources may contain the shell wildcard values `?', `*', `[]', 266236769Sobrien and `{}'. The values `?', `*', and `[]' may only be used as part of the 267236769Sobrien final component of the target or source, and must be used to describe 268236769Sobrien existing files. The value `{}' need not necessarily be used to describe 269236769Sobrien existing files. Expansion is in directory order, not alphabetically as 270236769Sobrien done in the shell. 271236769Sobrien 272236769SobrienSSHHEELLLL CCOOMMMMAANNDDSS 273236769Sobrien Each target may have associated with it a series of shell commands, nor- 274236769Sobrien mally used to create the target. Each of the commands in this script 275236769Sobrien _m_u_s_t be preceded by a tab. While any target may appear on a dependency 276236769Sobrien line, only one of these dependencies may be followed by a creation 277236769Sobrien script, unless the `::::' operator is used. 278236769Sobrien 279236769Sobrien If the first characters of the command line are any combination of `@@', 280236769Sobrien `++', or `--', the command is treated specially. A `@@' causes the command 281236769Sobrien not to be echoed before it is executed. A `++' causes the command to be 282236769Sobrien executed even when --nn is given. This is similar to the effect of the 283236769Sobrien .MAKE special source, except that the effect can be limited to a single 284236769Sobrien line of a script. A `--' causes any non-zero exit status of the command 285236769Sobrien line to be ignored. 286236769Sobrien 287246223Ssjg When bbmmaakkee is run in jobs mode with --jj _m_a_x___j_o_b_s, the entire script for 288246223Ssjg the target is fed to a single instance of the shell. 289246223Ssjg 290246223Ssjg In compatibility (non-jobs) mode, each command is run in a separate 291246223Ssjg process. If the command contains any shell meta characters 292246223Ssjg (`#=|^(){};&<>*?[]:$`\\n') it will be passed to the shell, otherwise 293246223Ssjg bbmmaakkee will attempt direct execution. 294246223Ssjg 295246223Ssjg Since bbmmaakkee will chdir(2) to `_._O_B_J_D_I_R' before executing any targets, each 296246223Ssjg child process starts with that as its current working directory. 297246223Ssjg 298246223Ssjg Makefiles should be written so that the mode of bbmmaakkee operation does not 299246223Ssjg change their behavior. For example, any command which needs to use 300246223Ssjg ``cd'' or ``chdir'', without side-effect should be put in parenthesis: 301246223Ssjg 302246223Ssjg 303246223Ssjg avoid-chdir-side-effects: 304246223Ssjg @echo Building $@ in `pwd` 305246223Ssjg @(cd ${.CURDIR} && ${.MAKE} $@) 306246223Ssjg @echo Back in `pwd` 307246223Ssjg 308246223Ssjg ensure-one-shell-regardless-of-mode: 309246223Ssjg @echo Building $@ in `pwd`; \ 310246223Ssjg (cd ${.CURDIR} && ${.MAKE} $@); \ 311246223Ssjg echo Back in `pwd` 312246223Ssjg 313236769SobrienVVAARRIIAABBLLEE AASSSSIIGGNNMMEENNTTSS 314236769Sobrien Variables in make are much like variables in the shell, and, by tradi- 315236769Sobrien tion, consist of all upper-case letters. 316236769Sobrien 317236769Sobrien VVaarriiaabbllee aassssiiggnnmmeenntt mmooddiiffiieerrss 318236769Sobrien The five operators that can be used to assign values to variables are as 319236769Sobrien follows: 320236769Sobrien 321236769Sobrien == Assign the value to the variable. Any previous value is overrid- 322236769Sobrien den. 323236769Sobrien 324236769Sobrien ++== Append the value to the current value of the variable. 325236769Sobrien 326236769Sobrien ??== Assign the value to the variable if it is not already defined. 327236769Sobrien 328236769Sobrien ::== Assign with expansion, i.e. expand the value before assigning it 329236769Sobrien to the variable. Normally, expansion is not done until the vari- 330236769Sobrien able is referenced. _N_O_T_E: References to undefined variables are 331236769Sobrien _n_o_t expanded. This can cause problems when variable modifiers 332236769Sobrien are used. 333236769Sobrien 334236769Sobrien !!== Expand the value and pass it to the shell for execution and 335236769Sobrien assign the result to the variable. Any newlines in the result 336236769Sobrien are replaced with spaces. 337236769Sobrien 338236769Sobrien Any white-space before the assigned _v_a_l_u_e is removed; if the value is 339236769Sobrien being appended, a single space is inserted between the previous contents 340236769Sobrien of the variable and the appended value. 341236769Sobrien 342236769Sobrien Variables are expanded by surrounding the variable name with either curly 343236769Sobrien braces (`{}') or parentheses (`()') and preceding it with a dollar sign 344236769Sobrien (`$'). If the variable name contains only a single letter, the surround- 345236769Sobrien ing braces or parentheses are not required. This shorter form is not 346236769Sobrien recommended. 347236769Sobrien 348236769Sobrien If the variable name contains a dollar, then the name itself is expanded 349236769Sobrien first. This allows almost arbitrary variable names, however names con- 350236769Sobrien taining dollar, braces, parenthesis, or whitespace are really best 351236769Sobrien avoided! 352236769Sobrien 353236769Sobrien If the result of expanding a variable contains a dollar sign (`$') the 354236769Sobrien string is expanded again. 355236769Sobrien 356236769Sobrien Variable substitution occurs at three distinct times, depending on where 357236769Sobrien the variable is being used. 358236769Sobrien 359236769Sobrien 1. Variables in dependency lines are expanded as the line is read. 360236769Sobrien 361236769Sobrien 2. Variables in shell commands are expanded when the shell command is 362236769Sobrien executed. 363236769Sobrien 364236769Sobrien 3. ``.for'' loop index variables are expanded on each loop iteration. 365236769Sobrien Note that other variables are not expanded inside loops so the fol- 366236769Sobrien lowing example code: 367236769Sobrien 368236769Sobrien 369236769Sobrien .for i in 1 2 3 370236769Sobrien a+= ${i} 371236769Sobrien j= ${i} 372236769Sobrien b+= ${j} 373236769Sobrien .endfor 374236769Sobrien 375236769Sobrien all: 376236769Sobrien @echo ${a} 377236769Sobrien @echo ${b} 378236769Sobrien 379236769Sobrien will print: 380236769Sobrien 381236769Sobrien 1 2 3 382236769Sobrien 3 3 3 383236769Sobrien 384236769Sobrien Because while ${a} contains ``1 2 3'' after the loop is executed, 385236769Sobrien ${b} contains ``${j} ${j} ${j}'' which expands to ``3 3 3'' since 386236769Sobrien after the loop completes ${j} contains ``3''. 387236769Sobrien 388236769Sobrien VVaarriiaabbllee ccllaasssseess 389236769Sobrien The four different classes of variables (in order of increasing prece- 390236769Sobrien dence) are: 391236769Sobrien 392236769Sobrien Environment variables 393236769Sobrien Variables defined as part of bbmmaakkee's environment. 394236769Sobrien 395236769Sobrien Global variables 396236769Sobrien Variables defined in the makefile or in included makefiles. 397236769Sobrien 398236769Sobrien Command line variables 399236769Sobrien Variables defined as part of the command line. 400236769Sobrien 401236769Sobrien Local variables 402236769Sobrien Variables that are defined specific to a certain target. The 403236769Sobrien seven local variables are as follows: 404236769Sobrien 405236769Sobrien _._A_L_L_S_R_C The list of all sources for this target; also known as 406236769Sobrien `_>'. 407236769Sobrien 408236769Sobrien _._A_R_C_H_I_V_E The name of the archive file. 409236769Sobrien 410236769Sobrien _._I_M_P_S_R_C In suffix-transformation rules, the name/path of the 411236769Sobrien source from which the target is to be transformed (the 412236769Sobrien ``implied'' source); also known as `_<'. It is not 413236769Sobrien defined in explicit rules. 414236769Sobrien 415236769Sobrien _._M_E_M_B_E_R The name of the archive member. 416236769Sobrien 417236769Sobrien _._O_O_D_A_T_E The list of sources for this target that were deemed 418236769Sobrien out-of-date; also known as `_?'. 419236769Sobrien 420236769Sobrien _._P_R_E_F_I_X The file prefix of the target, containing only the file 421236769Sobrien portion, no suffix or preceding directory components; 422236769Sobrien also known as `_*'. 423236769Sobrien 424236769Sobrien _._T_A_R_G_E_T The name of the target; also known as `_@'. 425236769Sobrien 426236769Sobrien The shorter forms `_@', `_?', `_<', `_>', and `_*' are permitted for 427236769Sobrien backward compatibility with historical makefiles and are not rec- 428236769Sobrien ommended. The six variables `_@_F', `_@_D', `_<_F', `_<_D', `_*_F', and 429236769Sobrien `_*_D' are permitted for compatibility with AT&T System V UNIX 430236769Sobrien makefiles and are not recommended. 431236769Sobrien 432236769Sobrien Four of the local variables may be used in sources on dependency 433236769Sobrien lines because they expand to the proper value for each target on 434236769Sobrien the line. These variables are `_._T_A_R_G_E_T', `_._P_R_E_F_I_X', `_._A_R_C_H_I_V_E', 435236769Sobrien and `_._M_E_M_B_E_R'. 436236769Sobrien 437236769Sobrien AAddddiittiioonnaall bbuuiilltt--iinn vvaarriiaabblleess 438236769Sobrien In addition, bbmmaakkee sets or knows about the following variables: 439236769Sobrien 440236769Sobrien _$ A single dollar sign `$', i.e. `$$' expands to a single 441236769Sobrien dollar sign. 442236769Sobrien 443236769Sobrien _._A_L_L_T_A_R_G_E_T_S The list of all targets encountered in the Makefile. If 444236769Sobrien evaluated during Makefile parsing, lists only those tar- 445236769Sobrien gets encountered thus far. 446236769Sobrien 447236769Sobrien _._C_U_R_D_I_R A path to the directory where bbmmaakkee was executed. Refer 448236769Sobrien to the description of `PWD' for more details. 449236769Sobrien 450236769Sobrien MAKE The name that bbmmaakkee was executed with (_a_r_g_v_[_0_]). For 451236769Sobrien compatibility bbmmaakkee also sets _._M_A_K_E with the same value. 452236769Sobrien The preferred variable to use is the environment variable 453236769Sobrien MAKE because it is more compatible with other versions of 454236769Sobrien bbmmaakkee and cannot be confused with the special target with 455236769Sobrien the same name. 456236769Sobrien 457236769Sobrien _._M_A_K_E_._D_E_P_E_N_D_F_I_L_E 458236769Sobrien Names the makefile (default `_._d_e_p_e_n_d') from which gener- 459236769Sobrien ated dependencies are read. 460236769Sobrien 461240330Smarcel _._M_A_K_E_._E_X_P_A_N_D___V_A_R_I_A_B_L_E_S 462240330Smarcel A boolean that controls the default behavior of the --VV 463240330Smarcel option. 464240330Smarcel 465236769Sobrien _._M_A_K_E_._E_X_P_O_R_T_E_D The list of variables exported by bbmmaakkee. 466236769Sobrien 467236769Sobrien _._M_A_K_E_._J_O_B_S The argument to the --jj option. 468236769Sobrien 469236769Sobrien _._M_A_K_E_._J_O_B_._P_R_E_F_I_X 470236769Sobrien If bbmmaakkee is run with _j then output for each target is 471236769Sobrien prefixed with a token `--- target ---' the first part of 472236769Sobrien which can be controlled via _._M_A_K_E_._J_O_B_._P_R_E_F_I_X. 473236769Sobrien For example: 474236769Sobrien .MAKE.JOB.PREFIX=${.newline}---${.MAKE:T}[${.MAKE.PID}] 475236769Sobrien would produce tokens like `---make[1234] target ---' mak- 476236769Sobrien ing it easier to track the degree of parallelism being 477236769Sobrien achieved. 478236769Sobrien 479236769Sobrien MAKEFLAGS The environment variable `MAKEFLAGS' may contain anything 480236769Sobrien that may be specified on bbmmaakkee's command line. Anything 481236769Sobrien specified on bbmmaakkee's command line is appended to the 482236769Sobrien `MAKEFLAGS' variable which is then entered into the envi- 483236769Sobrien ronment for all programs which bbmmaakkee executes. 484236769Sobrien 485236769Sobrien _._M_A_K_E_._L_E_V_E_L The recursion depth of bbmmaakkee. The initial instance of 486236769Sobrien bbmmaakkee will be 0, and an incremented value is put into the 487236769Sobrien environment to be seen by the next generation. This 488236769Sobrien allows tests like: .if ${.MAKE.LEVEL} == 0 to protect 489236769Sobrien things which should only be evaluated in the initial 490236769Sobrien instance of bbmmaakkee. 491236769Sobrien 492236769Sobrien _._M_A_K_E_._M_A_K_E_F_I_L_E___P_R_E_F_E_R_E_N_C_E 493236769Sobrien The ordered list of makefile names (default `_m_a_k_e_f_i_l_e', 494236769Sobrien `_M_a_k_e_f_i_l_e') that bbmmaakkee will look for. 495236769Sobrien 496236769Sobrien _._M_A_K_E_._M_A_K_E_F_I_L_E_S 497236769Sobrien The list of makefiles read by bbmmaakkee, which is useful for 498236769Sobrien tracking dependencies. Each makefile is recorded only 499236769Sobrien once, regardless of the number of times read. 500236769Sobrien 501236769Sobrien _._M_A_K_E_._M_O_D_E Processed after reading all makefiles. Can affect the 502236769Sobrien mode that bbmmaakkee runs in. It can contain a number of key- 503236769Sobrien words: 504236769Sobrien 505236769Sobrien _c_o_m_p_a_t Like --BB, puts bbmmaakkee into "compat" mode. 506236769Sobrien 507236769Sobrien _m_e_t_a Puts bbmmaakkee into "meta" mode, where meta files 508236769Sobrien are created for each target to capture the 509236769Sobrien command run, the output generated and if 510236769Sobrien filemon(4) is available, the system calls 511236769Sobrien which are of interest to bbmmaakkee. The captured 512236769Sobrien output can be very useful when diagnosing 513236769Sobrien errors. 514236769Sobrien 515236769Sobrien _c_u_r_d_i_r_O_k_= _b_f Normally bbmmaakkee will not create .meta files 516236769Sobrien in `_._C_U_R_D_I_R'. This can be overridden by set- 517236769Sobrien ting _b_f to a value which represents True. 518236769Sobrien 519236769Sobrien _e_n_v For debugging, it can be useful to inlcude 520236769Sobrien the environment in the .meta file. 521236769Sobrien 522236769Sobrien _v_e_r_b_o_s_e If in "meta" mode, print a clue about the 523236769Sobrien target being built. This is useful if the 524236769Sobrien build is otherwise running silently. The 525236769Sobrien message printed the value of: 526236769Sobrien _._M_A_K_E_._M_E_T_A_._P_R_E_F_I_X. 527236769Sobrien 528236769Sobrien _i_g_n_o_r_e_-_c_m_d Some makefiles have commands which are simply 529236769Sobrien not stable. This keyword causes them to be 530236769Sobrien ignored for determining whether a target is 531236769Sobrien out of date in "meta" mode. See also 532236769Sobrien ..NNOOMMEETTAA__CCMMPP. 533236769Sobrien 534236769Sobrien _s_i_l_e_n_t_= _b_f If _b_f is True, when a .meta file is created, 535236769Sobrien mark the target ..SSIILLEENNTT. 536236769Sobrien 537236769Sobrien _._M_A_K_E_._M_E_T_A_._B_A_I_L_I_W_I_C_K 538236769Sobrien In "meta" mode, provides a list of prefixes which match 539236769Sobrien the directories controlled by bbmmaakkee. If a file that was 540236769Sobrien generated outside of _._O_B_J_D_I_R but within said bailiwick is 541236769Sobrien missing, the current target is considered out-of-date. 542236769Sobrien 543236769Sobrien _._M_A_K_E_._M_E_T_A_._C_R_E_A_T_E_D 544236769Sobrien In "meta" mode, this variable contains a list of all the 545236769Sobrien meta files updated. If not empty, it can be used to 546236769Sobrien trigger processing of _._M_A_K_E_._M_E_T_A_._F_I_L_E_S. 547236769Sobrien 548236769Sobrien _._M_A_K_E_._M_E_T_A_._F_I_L_E_S 549236769Sobrien In "meta" mode, this variable contains a list of all the 550236769Sobrien meta files used (updated or not). This list can be used 551236769Sobrien to process the meta files to extract dependency informa- 552236769Sobrien tion. 553236769Sobrien 554236769Sobrien _._M_A_K_E_._M_E_T_A_._P_R_E_F_I_X 555236769Sobrien Defines the message printed for each meta file updated in 556236769Sobrien "meta verbose" mode. The default value is: 557236769Sobrien Building ${.TARGET:H:tA}/${.TARGET:T} 558236769Sobrien 559236769Sobrien _._M_A_K_E_O_V_E_R_R_I_D_E_S This variable is used to record the names of variables 560236769Sobrien assigned to on the command line, so that they may be 561236769Sobrien exported as part of `MAKEFLAGS'. This behaviour can be 562236769Sobrien disabled by assigning an empty value to `_._M_A_K_E_O_V_E_R_R_I_D_E_S' 563236769Sobrien within a makefile. Extra variables can be exported from 564236769Sobrien a makefile by appending their names to `_._M_A_K_E_O_V_E_R_R_I_D_E_S'. 565236769Sobrien `MAKEFLAGS' is re-exported whenever `_._M_A_K_E_O_V_E_R_R_I_D_E_S' is 566236769Sobrien modified. 567236769Sobrien 568249033Ssjg _._M_A_K_E_._P_A_T_H___F_I_L_E_M_O_N 569249033Ssjg If bbmmaakkee was built with filemon(4) support, this is set 570249033Ssjg to the path of the device node. This allows makefiles to 571249033Ssjg test for this support. 572249033Ssjg 573236769Sobrien _._M_A_K_E_._P_I_D The process-id of bbmmaakkee. 574236769Sobrien 575236769Sobrien _._M_A_K_E_._P_P_I_D The parent process-id of bbmmaakkee. 576236769Sobrien 577236769Sobrien _M_A_K_E___P_R_I_N_T___V_A_R___O_N___E_R_R_O_R 578236769Sobrien When bbmmaakkee stops due to an error, it prints its name and 579236769Sobrien the value of `_._C_U_R_D_I_R' as well as the value of any vari- 580236769Sobrien ables named in `_M_A_K_E___P_R_I_N_T___V_A_R___O_N___E_R_R_O_R'. 581236769Sobrien 582236769Sobrien _._n_e_w_l_i_n_e This variable is simply assigned a newline character as 583236769Sobrien its value. This allows expansions using the ::@@ modifier 584236769Sobrien to put a newline between iterations of the loop rather 585236769Sobrien than a space. For example, the printing of 586236769Sobrien `_M_A_K_E___P_R_I_N_T___V_A_R___O_N___E_R_R_O_R' could be done as 587236769Sobrien ${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'${.newline}@}. 588236769Sobrien 589236769Sobrien _._O_B_J_D_I_R A path to the directory where the targets are built. Its 590236769Sobrien value is determined by trying to chdir(2) to the follow- 591236769Sobrien ing directories in order and using the first match: 592236769Sobrien 593236769Sobrien 1. ${MAKEOBJDIRPREFIX}${.CURDIR} 594236769Sobrien 595236769Sobrien (Only if `MAKEOBJDIRPREFIX' is set in the environ- 596236769Sobrien ment or on the command line.) 597236769Sobrien 598236769Sobrien 2. ${MAKEOBJDIR} 599236769Sobrien 600236769Sobrien (Only if `MAKEOBJDIR' is set in the environment or 601236769Sobrien on the command line.) 602236769Sobrien 603236769Sobrien 3. ${.CURDIR}_/_o_b_j_.${MACHINE} 604236769Sobrien 605236769Sobrien 4. ${.CURDIR}_/_o_b_j 606236769Sobrien 607236769Sobrien 5. _/_u_s_r_/_o_b_j_/${.CURDIR} 608236769Sobrien 609236769Sobrien 6. ${.CURDIR} 610236769Sobrien 611236769Sobrien Variable expansion is performed on the value before it's 612236769Sobrien used, so expressions such as 613236769Sobrien ${.CURDIR:S,^/usr/src,/var/obj,} 614236769Sobrien may be used. This is especially useful with 615236769Sobrien `MAKEOBJDIR'. 616236769Sobrien 617236769Sobrien `_._O_B_J_D_I_R' may be modified in the makefile as a global 618236769Sobrien variable. In all cases, bbmmaakkee will chdir(2) to `_._O_B_J_D_I_R' 619236769Sobrien and set `PWD' to that directory before executing any tar- 620236769Sobrien gets. 621236769Sobrien 622236769Sobrien _._P_A_R_S_E_D_I_R A path to the directory of the current `_M_a_k_e_f_i_l_e' being 623236769Sobrien parsed. 624236769Sobrien 625236769Sobrien _._P_A_R_S_E_F_I_L_E The basename of the current `_M_a_k_e_f_i_l_e' being parsed. 626236769Sobrien This variable and `_._P_A_R_S_E_D_I_R' are both set only while the 627236769Sobrien `_M_a_k_e_f_i_l_e_s' are being parsed. If you want to retain 628236769Sobrien their current values, assign them to a variable using 629236769Sobrien assignment with expansion: (`::=='). 630236769Sobrien 631236769Sobrien _._P_A_T_H A variable that represents the list of directories that 632236769Sobrien bbmmaakkee will search for files. The search list should be 633236769Sobrien updated using the target `_._P_A_T_H' rather than the vari- 634236769Sobrien able. 635236769Sobrien 636236769Sobrien PWD Alternate path to the current directory. bbmmaakkee normally 637236769Sobrien sets `_._C_U_R_D_I_R' to the canonical path given by getcwd(3). 638236769Sobrien However, if the environment variable `PWD' is set and 639236769Sobrien gives a path to the current directory, then bbmmaakkee sets 640236769Sobrien `_._C_U_R_D_I_R' to the value of `PWD' instead. This behaviour 641236769Sobrien is disabled if `MAKEOBJDIRPREFIX' is set or `MAKEOBJDIR' 642236769Sobrien contains a variable transform. `PWD' is set to the value 643236769Sobrien of `_._O_B_J_D_I_R' for all programs which bbmmaakkee executes. 644236769Sobrien 645236769Sobrien .TARGETS The list of targets explicitly specified on the command 646236769Sobrien line, if any. 647236769Sobrien 648236769Sobrien VPATH Colon-separated (``:'') lists of directories that bbmmaakkee 649236769Sobrien will search for files. The variable is supported for 650236769Sobrien compatibility with old make programs only, use `_._P_A_T_H' 651236769Sobrien instead. 652236769Sobrien 653236769Sobrien VVaarriiaabbllee mmooddiiffiieerrss 654236769Sobrien Variable expansion may be modified to select or modify each word of the 655236769Sobrien variable (where a ``word'' is white-space delimited sequence of charac- 656236769Sobrien ters). The general format of a variable expansion is as follows: 657236769Sobrien 658236769Sobrien ${variable[:modifier[:...]]} 659236769Sobrien 660236769Sobrien Each modifier begins with a colon, which may be escaped with a backslash 661236769Sobrien (`\'). 662236769Sobrien 663236769Sobrien A set of modifiers can be specified via a variable, as follows: 664236769Sobrien 665236769Sobrien modifier_variable=modifier[:...] 666236769Sobrien ${variable:${modifier_variable}[:...]} 667236769Sobrien 668236769Sobrien In this case the first modifier in the modifier_variable does not start 669236769Sobrien with a colon, since that must appear in the referencing variable. If any 670236769Sobrien of the modifiers in the modifier_variable contain a dollar sign (`$'), 671236769Sobrien these must be doubled to avoid early expansion. 672236769Sobrien 673236769Sobrien The supported modifiers are: 674236769Sobrien 675236769Sobrien ::EE Replaces each word in the variable with its suffix. 676236769Sobrien 677236769Sobrien ::HH Replaces each word in the variable with everything but the last com- 678236769Sobrien ponent. 679236769Sobrien 680236769Sobrien ::MM_p_a_t_t_e_r_n 681236769Sobrien Select only those words that match _p_a_t_t_e_r_n. The standard shell 682236769Sobrien wildcard characters (`*', `?', and `[]') may be used. The wildcard 683236769Sobrien characters may be escaped with a backslash (`\'). 684236769Sobrien 685236769Sobrien ::NN_p_a_t_t_e_r_n 686236769Sobrien This is identical to `::MM', but selects all words which do not match 687236769Sobrien _p_a_t_t_e_r_n. 688236769Sobrien 689236769Sobrien ::OO Order every word in variable alphabetically. To sort words in 690236769Sobrien reverse order use the `::OO::[[--11....11]]' combination of modifiers. 691236769Sobrien 692236769Sobrien ::OOxx Randomize words in variable. The results will be different each 693236769Sobrien time you are referring to the modified variable; use the assignment 694236769Sobrien with expansion (`::==') to prevent such behaviour. For example, 695236769Sobrien 696236769Sobrien LIST= uno due tre quattro 697236769Sobrien RANDOM_LIST= ${LIST:Ox} 698236769Sobrien STATIC_RANDOM_LIST:= ${LIST:Ox} 699236769Sobrien 700236769Sobrien all: 701236769Sobrien @echo "${RANDOM_LIST}" 702236769Sobrien @echo "${RANDOM_LIST}" 703236769Sobrien @echo "${STATIC_RANDOM_LIST}" 704236769Sobrien @echo "${STATIC_RANDOM_LIST}" 705236769Sobrien may produce output similar to: 706236769Sobrien 707236769Sobrien quattro due tre uno 708236769Sobrien tre due quattro uno 709236769Sobrien due uno quattro tre 710236769Sobrien due uno quattro tre 711236769Sobrien 712236769Sobrien ::QQ Quotes every shell meta-character in the variable, so that it can be 713236769Sobrien passed safely through recursive invocations of bbmmaakkee. 714236769Sobrien 715236769Sobrien ::RR Replaces each word in the variable with everything but its suffix. 716236769Sobrien 717236769Sobrien ::ggmmttiimmee 718236769Sobrien The value is a format string for strftime(3), using the current 719236769Sobrien gmtime(3). 720236769Sobrien 721236769Sobrien ::hhaasshh 722236769Sobrien Compute a 32bit hash of the value and encode it as hex digits. 723236769Sobrien 724236769Sobrien ::llooccaallttiimmee 725236769Sobrien The value is a format string for strftime(3), using the current 726236769Sobrien localtime(3). 727236769Sobrien 728236769Sobrien ::ttAA Attempt to convert variable to an absolute path using realpath(3), 729236769Sobrien if that fails, the value is unchanged. 730236769Sobrien 731236769Sobrien ::ttll Converts variable to lower-case letters. 732236769Sobrien 733236769Sobrien ::ttss_c 734236769Sobrien Words in the variable are normally separated by a space on expan- 735236769Sobrien sion. This modifier sets the separator to the character _c. If _c is 736236769Sobrien omitted, then no separator is used. The common escapes (including 737236769Sobrien octal numeric codes), work as expected. 738236769Sobrien 739236769Sobrien ::ttuu Converts variable to upper-case letters. 740236769Sobrien 741236769Sobrien ::ttWW Causes the value to be treated as a single word (possibly containing 742236769Sobrien embedded white space). See also `::[[**]]'. 743236769Sobrien 744236769Sobrien ::ttww Causes the value to be treated as a sequence of words delimited by 745236769Sobrien white space. See also `::[[@@]]'. 746236769Sobrien 747236769Sobrien ::SS/_o_l_d___s_t_r_i_n_g/_n_e_w___s_t_r_i_n_g/[11ggWW] 748236769Sobrien Modify the first occurrence of _o_l_d___s_t_r_i_n_g in the variable's value, 749236769Sobrien replacing it with _n_e_w___s_t_r_i_n_g. If a `g' is appended to the last 750236769Sobrien slash of the pattern, all occurrences in each word are replaced. If 751236769Sobrien a `1' is appended to the last slash of the pattern, only the first 752236769Sobrien word is affected. If a `W' is appended to the last slash of the 753236769Sobrien pattern, then the value is treated as a single word (possibly con- 754236769Sobrien taining embedded white space). If _o_l_d___s_t_r_i_n_g begins with a caret 755236769Sobrien (`^'), _o_l_d___s_t_r_i_n_g is anchored at the beginning of each word. If 756236769Sobrien _o_l_d___s_t_r_i_n_g ends with a dollar sign (`$'), it is anchored at the end 757236769Sobrien of each word. Inside _n_e_w___s_t_r_i_n_g, an ampersand (`&') is replaced by 758236769Sobrien _o_l_d___s_t_r_i_n_g (without any `^' or `$'). Any character may be used as a 759236769Sobrien delimiter for the parts of the modifier string. The anchoring, 760236769Sobrien ampersand and delimiter characters may be escaped with a backslash 761236769Sobrien (`\'). 762236769Sobrien 763236769Sobrien Variable expansion occurs in the normal fashion inside both 764236769Sobrien _o_l_d___s_t_r_i_n_g and _n_e_w___s_t_r_i_n_g with the single exception that a backslash 765236769Sobrien is used to prevent the expansion of a dollar sign (`$'), not a pre- 766236769Sobrien ceding dollar sign as is usual. 767236769Sobrien 768236769Sobrien ::CC/_p_a_t_t_e_r_n/_r_e_p_l_a_c_e_m_e_n_t/[11ggWW] 769236769Sobrien The ::CC modifier is just like the ::SS modifier except that the old and 770236769Sobrien new strings, instead of being simple strings, are a regular expres- 771236769Sobrien sion (see regex(3)) string _p_a_t_t_e_r_n and an ed(1)-style string 772236769Sobrien _r_e_p_l_a_c_e_m_e_n_t. Normally, the first occurrence of the pattern _p_a_t_t_e_r_n 773236769Sobrien in each word of the value is substituted with _r_e_p_l_a_c_e_m_e_n_t. The `1' 774236769Sobrien modifier causes the substitution to apply to at most one word; the 775236769Sobrien `g' modifier causes the substitution to apply to as many instances 776236769Sobrien of the search pattern _p_a_t_t_e_r_n as occur in the word or words it is 777236769Sobrien found in; the `W' modifier causes the value to be treated as a sin- 778236769Sobrien gle word (possibly containing embedded white space). Note that `1' 779236769Sobrien and `g' are orthogonal; the former specifies whether multiple words 780236769Sobrien are potentially affected, the latter whether multiple substitutions 781236769Sobrien can potentially occur within each affected word. 782236769Sobrien 783236769Sobrien ::TT Replaces each word in the variable with its last component. 784236769Sobrien 785236769Sobrien ::uu Remove adjacent duplicate words (like uniq(1)). 786236769Sobrien 787236769Sobrien ::??_t_r_u_e___s_t_r_i_n_g::_f_a_l_s_e___s_t_r_i_n_g 788236769Sobrien If the variable name (not its value), when parsed as a .if condi- 789236769Sobrien tional expression, evaluates to true, return as its value the 790236769Sobrien _t_r_u_e___s_t_r_i_n_g, otherwise return the _f_a_l_s_e___s_t_r_i_n_g. Since the variable 791236769Sobrien name is used as the expression, :? must be the first modifier after 792236769Sobrien the variable name itself - which will, of course, usually contain 793236769Sobrien variable expansions. A common error is trying to use expressions 794236769Sobrien like 795236769Sobrien ${NUMBERS:M42:?match:no} 796236769Sobrien which actually tests defined(NUMBERS), to determine is any words 797236769Sobrien match "42" you need to use something like: 798236769Sobrien ${"${NUMBERS:M42}" != "":?match:no}. 799236769Sobrien 800236769Sobrien _:_o_l_d___s_t_r_i_n_g_=_n_e_w___s_t_r_i_n_g 801236769Sobrien This is the AT&T System V UNIX style variable substitution. It must 802236769Sobrien be the last modifier specified. If _o_l_d___s_t_r_i_n_g or _n_e_w___s_t_r_i_n_g do not 803236769Sobrien contain the pattern matching character _% then it is assumed that 804236769Sobrien they are anchored at the end of each word, so only suffixes or 805236769Sobrien entire words may be replaced. Otherwise _% is the substring of 806236769Sobrien _o_l_d___s_t_r_i_n_g to be replaced in _n_e_w___s_t_r_i_n_g. 807236769Sobrien 808236769Sobrien Variable expansion occurs in the normal fashion inside both 809236769Sobrien _o_l_d___s_t_r_i_n_g and _n_e_w___s_t_r_i_n_g with the single exception that a backslash 810236769Sobrien is used to prevent the expansion of a dollar sign (`$'), not a pre- 811236769Sobrien ceding dollar sign as is usual. 812236769Sobrien 813236769Sobrien ::@@_t_e_m_p@@_s_t_r_i_n_g@@ 814236769Sobrien This is the loop expansion mechanism from the OSF Development Envi- 815236769Sobrien ronment (ODE) make. Unlike ..ffoorr loops expansion occurs at the time 816236769Sobrien of reference. Assign _t_e_m_p to each word in the variable and evaluate 817236769Sobrien _s_t_r_i_n_g. The ODE convention is that _t_e_m_p should start and end with a 818236769Sobrien period. For example. 819236769Sobrien ${LINKS:@.LINK.@${LN} ${TARGET} ${.LINK.}@} 820236769Sobrien 821236769Sobrien However a single character varaiable is often more readable: 822236769Sobrien ${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'${.newline}@} 823236769Sobrien 824236769Sobrien ::UU_n_e_w_v_a_l 825236769Sobrien If the variable is undefined _n_e_w_v_a_l is the value. If the variable 826236769Sobrien is defined, the existing value is returned. This is another ODE 827236769Sobrien make feature. It is handy for setting per-target CFLAGS for 828236769Sobrien instance: 829236769Sobrien ${_${.TARGET:T}_CFLAGS:U${DEF_CFLAGS}} 830236769Sobrien If a value is only required if the variable is undefined, use: 831236769Sobrien ${VAR:D:Unewval} 832236769Sobrien 833236769Sobrien ::DD_n_e_w_v_a_l 834236769Sobrien If the variable is defined _n_e_w_v_a_l is the value. 835236769Sobrien 836236769Sobrien ::LL The name of the variable is the value. 837236769Sobrien 838236769Sobrien ::PP The path of the node which has the same name as the variable is the 839236769Sobrien value. If no such node exists or its path is null, then the name of 840236769Sobrien the variable is used. In order for this modifier to work, the name 841236769Sobrien (node) must at least have appeared on the rhs of a dependency. 842236769Sobrien 843236769Sobrien ::!!_c_m_d!! 844236769Sobrien The output of running _c_m_d is the value. 845236769Sobrien 846236769Sobrien ::sshh If the variable is non-empty it is run as a command and the output 847236769Sobrien becomes the new value. 848236769Sobrien 849236769Sobrien ::::==_s_t_r 850236769Sobrien The variable is assigned the value _s_t_r after substitution. This 851236769Sobrien modifier and its variations are useful in obscure situations such as 852236769Sobrien wanting to set a variable when shell commands are being parsed. 853236769Sobrien These assignment modifiers always expand to nothing, so if appearing 854236769Sobrien in a rule line by themselves should be preceded with something to 855236769Sobrien keep bbmmaakkee happy. 856236769Sobrien 857236769Sobrien The `::::' helps avoid false matches with the AT&T System V UNIX style 858236769Sobrien ::== modifier and since substitution always occurs the ::::== form is 859236769Sobrien vaguely appropriate. 860236769Sobrien 861236769Sobrien ::::??==_s_t_r 862236769Sobrien As for ::::== but only if the variable does not already have a value. 863236769Sobrien 864236769Sobrien ::::++==_s_t_r 865236769Sobrien Append _s_t_r to the variable. 866236769Sobrien 867236769Sobrien ::::!!==_c_m_d 868236769Sobrien Assign the output of _c_m_d to the variable. 869236769Sobrien 870236769Sobrien ::[[_r_a_n_g_e]] 871236769Sobrien Selects one or more words from the value, or performs other opera- 872236769Sobrien tions related to the way in which the value is divided into words. 873236769Sobrien 874236769Sobrien Ordinarily, a value is treated as a sequence of words delimited by 875236769Sobrien white space. Some modifiers suppress this behaviour, causing a 876236769Sobrien value to be treated as a single word (possibly containing embedded 877236769Sobrien white space). An empty value, or a value that consists entirely of 878236769Sobrien white-space, is treated as a single word. For the purposes of the 879236769Sobrien `::[[]]' modifier, the words are indexed both forwards using positive 880236769Sobrien integers (where index 1 represents the first word), and backwards 881236769Sobrien using negative integers (where index -1 represents the last word). 882236769Sobrien 883236769Sobrien The _r_a_n_g_e is subjected to variable expansion, and the expanded 884236769Sobrien result is then interpreted as follows: 885236769Sobrien 886236769Sobrien _i_n_d_e_x Selects a single word from the value. 887236769Sobrien 888236769Sobrien _s_t_a_r_t...._e_n_d 889236769Sobrien Selects all words from _s_t_a_r_t to _e_n_d, inclusive. For example, 890236769Sobrien `::[[22....--11]]' selects all words from the second word to the last 891236769Sobrien word. If _s_t_a_r_t is greater than _e_n_d, then the words are out- 892236769Sobrien put in reverse order. For example, `::[[--11....11]]' selects all 893236769Sobrien the words from last to first. 894236769Sobrien 895236769Sobrien ** Causes subsequent modifiers to treat the value as a single 896236769Sobrien word (possibly containing embedded white space). Analogous 897236769Sobrien to the effect of "$*" in Bourne shell. 898236769Sobrien 899236769Sobrien 0 Means the same as `::[[**]]'. 900236769Sobrien 901236769Sobrien @@ Causes subsequent modifiers to treat the value as a sequence 902236769Sobrien of words delimited by white space. Analogous to the effect 903236769Sobrien of "$@" in Bourne shell. 904236769Sobrien 905236769Sobrien ## Returns the number of words in the value. 906236769Sobrien 907236769SobrienIINNCCLLUUDDEE SSTTAATTEEMMEENNTTSS,, CCOONNDDIITTIIOONNAALLSS AANNDD FFOORR LLOOOOPPSS 908236769Sobrien Makefile inclusion, conditional structures and for loops reminiscent of 909236769Sobrien the C programming language are provided in bbmmaakkee. All such structures 910236769Sobrien are identified by a line beginning with a single dot (`.') character. 911236769Sobrien Files are included with either ..iinncclluuddee <_f_i_l_e> or ..iinncclluuddee "_f_i_l_e". Vari- 912236769Sobrien ables between the angle brackets or double quotes are expanded to form 913236769Sobrien the file name. If angle brackets are used, the included makefile is 914236769Sobrien expected to be in the system makefile directory. If double quotes are 915236769Sobrien used, the including makefile's directory and any directories specified 916236769Sobrien using the --II option are searched before the system makefile directory. 917236769Sobrien For compatibility with other versions of bbmmaakkee `include file ...' is also 918236769Sobrien accepted. If the include statement is written as ..--iinncclluuddee or as 919236769Sobrien ..ssiinncclluuddee then errors locating and/or opening include files are ignored. 920236769Sobrien 921236769Sobrien Conditional expressions are also preceded by a single dot as the first 922236769Sobrien character of a line. The possible conditionals are as follows: 923236769Sobrien 924236769Sobrien ..eerrrroorr _m_e_s_s_a_g_e 925236769Sobrien The message is printed along with the name of the makefile and 926236769Sobrien line number, then bbmmaakkee will exit. 927236769Sobrien 928236769Sobrien ..eexxppoorrtt _v_a_r_i_a_b_l_e _._._. 929236769Sobrien Export the specified global variable. If no variable list is 930236769Sobrien provided, all globals are exported except for internal variables 931236769Sobrien (those that start with `.'). This is not affected by the --XX 932236769Sobrien flag, so should be used with caution. For compatibility with 933236769Sobrien other bbmmaakkee programs `export variable=value' is also accepted. 934236769Sobrien 935236769Sobrien Appending a variable name to _._M_A_K_E_._E_X_P_O_R_T_E_D is equivalent to 936236769Sobrien exporting a variable. 937236769Sobrien 938236769Sobrien ..eexxppoorrtt--eennvv _v_a_r_i_a_b_l_e _._._. 939236769Sobrien The same as `.export', except that the variable is not appended 940236769Sobrien to _._M_A_K_E_._E_X_P_O_R_T_E_D. This allows exporting a value to the environ- 941236769Sobrien ment which is different from that used by bbmmaakkee internally. 942236769Sobrien 943236769Sobrien ..iinnffoo _m_e_s_s_a_g_e 944236769Sobrien The message is printed along with the name of the makefile and 945236769Sobrien line number. 946236769Sobrien 947236769Sobrien ..uunnddeeff _v_a_r_i_a_b_l_e 948236769Sobrien Un-define the specified global variable. Only global variables 949236769Sobrien may be un-defined. 950236769Sobrien 951236769Sobrien ..uunneexxppoorrtt _v_a_r_i_a_b_l_e _._._. 952236769Sobrien The opposite of `.export'. The specified global _v_a_r_i_a_b_l_e will be 953236769Sobrien removed from _._M_A_K_E_._E_X_P_O_R_T_E_D. If no variable list is provided, 954236769Sobrien all globals are unexported, and _._M_A_K_E_._E_X_P_O_R_T_E_D deleted. 955236769Sobrien 956236769Sobrien ..uunneexxppoorrtt--eennvv 957236769Sobrien Unexport all globals previously exported and clear the environ- 958236769Sobrien ment inherited from the parent. This operation will cause a mem- 959236769Sobrien ory leak of the original environment, so should be used spar- 960236769Sobrien ingly. Testing for _._M_A_K_E_._L_E_V_E_L being 0, would make sense. Also 961236769Sobrien note that any variables which originated in the parent environ- 962236769Sobrien ment should be explicitly preserved if desired. For example: 963236769Sobrien 964236769Sobrien .if ${.MAKE.LEVEL} == 0 965236769Sobrien PATH := ${PATH} 966236769Sobrien .unexport-env 967236769Sobrien .export PATH 968236769Sobrien .endif 969236769Sobrien 970236769Sobrien Would result in an environment containing only `PATH', which is 971236769Sobrien the minimal useful environment. Actually `.MAKE.LEVEL' will also 972236769Sobrien be pushed into the new environment. 973236769Sobrien 974236769Sobrien ..wwaarrnniinngg _m_e_s_s_a_g_e 975236769Sobrien The message prefixed by `_w_a_r_n_i_n_g_:' is printed along with the name 976236769Sobrien of the makefile and line number. 977236769Sobrien 978236769Sobrien ..iiff [!]_e_x_p_r_e_s_s_i_o_n [_o_p_e_r_a_t_o_r _e_x_p_r_e_s_s_i_o_n _._._.] 979236769Sobrien Test the value of an expression. 980236769Sobrien 981236769Sobrien ..iiffddeeff [!]_v_a_r_i_a_b_l_e [_o_p_e_r_a_t_o_r _v_a_r_i_a_b_l_e _._._.] 982236769Sobrien Test the value of a variable. 983236769Sobrien 984236769Sobrien ..iiffnnddeeff [!]_v_a_r_i_a_b_l_e [_o_p_e_r_a_t_o_r _v_a_r_i_a_b_l_e _._._.] 985236769Sobrien Test the value of a variable. 986236769Sobrien 987236769Sobrien ..iiffmmaakkee [!]_t_a_r_g_e_t [_o_p_e_r_a_t_o_r _t_a_r_g_e_t _._._.] 988236769Sobrien Test the target being built. 989236769Sobrien 990236769Sobrien ..iiffnnmmaakkee [!] _t_a_r_g_e_t [_o_p_e_r_a_t_o_r _t_a_r_g_e_t _._._.] 991236769Sobrien Test the target being built. 992236769Sobrien 993236769Sobrien ..eellssee Reverse the sense of the last conditional. 994236769Sobrien 995236769Sobrien ..eelliiff [!] _e_x_p_r_e_s_s_i_o_n [_o_p_e_r_a_t_o_r _e_x_p_r_e_s_s_i_o_n _._._.] 996236769Sobrien A combination of `..eellssee' followed by `..iiff'. 997236769Sobrien 998236769Sobrien ..eelliiffddeeff [!]_v_a_r_i_a_b_l_e [_o_p_e_r_a_t_o_r _v_a_r_i_a_b_l_e _._._.] 999236769Sobrien A combination of `..eellssee' followed by `..iiffddeeff'. 1000236769Sobrien 1001236769Sobrien ..eelliiffnnddeeff [!]_v_a_r_i_a_b_l_e [_o_p_e_r_a_t_o_r _v_a_r_i_a_b_l_e _._._.] 1002236769Sobrien A combination of `..eellssee' followed by `..iiffnnddeeff'. 1003236769Sobrien 1004236769Sobrien ..eelliiffmmaakkee [!]_t_a_r_g_e_t [_o_p_e_r_a_t_o_r _t_a_r_g_e_t _._._.] 1005236769Sobrien A combination of `..eellssee' followed by `..iiffmmaakkee'. 1006236769Sobrien 1007236769Sobrien ..eelliiffnnmmaakkee [!]_t_a_r_g_e_t [_o_p_e_r_a_t_o_r _t_a_r_g_e_t _._._.] 1008236769Sobrien A combination of `..eellssee' followed by `..iiffnnmmaakkee'. 1009236769Sobrien 1010236769Sobrien ..eennddiiff End the body of the conditional. 1011236769Sobrien 1012236769Sobrien The _o_p_e_r_a_t_o_r may be any one of the following: 1013236769Sobrien 1014236769Sobrien |||| Logical OR. 1015236769Sobrien 1016236769Sobrien &&&& Logical AND; of higher precedence than ``||''. 1017236769Sobrien 1018236769Sobrien As in C, bbmmaakkee will only evaluate a conditional as far as is necessary to 1019236769Sobrien determine its value. Parentheses may be used to change the order of 1020236769Sobrien evaluation. The boolean operator `!!' may be used to logically negate an 1021236769Sobrien entire conditional. It is of higher precedence than `&&&&'. 1022236769Sobrien 1023236769Sobrien The value of _e_x_p_r_e_s_s_i_o_n may be any of the following: 1024236769Sobrien 1025236769Sobrien ddeeffiinneedd Takes a variable name as an argument and evaluates to true if 1026236769Sobrien the variable has been defined. 1027236769Sobrien 1028236769Sobrien mmaakkee Takes a target name as an argument and evaluates to true if the 1029236769Sobrien target was specified as part of bbmmaakkee's command line or was 1030236769Sobrien declared the default target (either implicitly or explicitly, 1031236769Sobrien see _._M_A_I_N) before the line containing the conditional. 1032236769Sobrien 1033236769Sobrien eemmppttyy Takes a variable, with possible modifiers, and evaluates to true 1034236769Sobrien if the expansion of the variable would result in an empty 1035236769Sobrien string. 1036236769Sobrien 1037236769Sobrien eexxiissttss Takes a file name as an argument and evaluates to true if the 1038236769Sobrien file exists. The file is searched for on the system search path 1039236769Sobrien (see _._P_A_T_H). 1040236769Sobrien 1041236769Sobrien ttaarrggeett Takes a target name as an argument and evaluates to true if the 1042236769Sobrien target has been defined. 1043236769Sobrien 1044236769Sobrien ccoommmmaannddss 1045236769Sobrien Takes a target name as an argument and evaluates to true if the 1046236769Sobrien target has been defined and has commands associated with it. 1047236769Sobrien 1048236769Sobrien _E_x_p_r_e_s_s_i_o_n may also be an arithmetic or string comparison. Variable 1049236769Sobrien expansion is performed on both sides of the comparison, after which the 1050236769Sobrien integral values are compared. A value is interpreted as hexadecimal if 1051236769Sobrien it is preceded by 0x, otherwise it is decimal; octal numbers are not sup- 1052236769Sobrien ported. The standard C relational operators are all supported. If after 1053236769Sobrien variable expansion, either the left or right hand side of a `====' or `!!==' 1054236769Sobrien operator is not an integral value, then string comparison is performed 1055236769Sobrien between the expanded variables. If no relational operator is given, it 1056236769Sobrien is assumed that the expanded variable is being compared against 0 or an 1057236769Sobrien empty string in the case of a string comparison. 1058236769Sobrien 1059236769Sobrien When bbmmaakkee is evaluating one of these conditional expressions, and it 1060236769Sobrien encounters a (white-space separated) word it doesn't recognize, either 1061236769Sobrien the ``make'' or ``defined'' expression is applied to it, depending on the 1062236769Sobrien form of the conditional. If the form is `..iiffddeeff', `..iiffnnddeeff', or `..iiff' 1063236769Sobrien the ``defined'' expression is applied. Similarly, if the form is 1064236769Sobrien `..iiffmmaakkee' or `..iiffnnmmaakkee, tthhee' ``make'' expression is applied. 1065236769Sobrien 1066236769Sobrien If the conditional evaluates to true the parsing of the makefile contin- 1067236769Sobrien ues as before. If it evaluates to false, the following lines are 1068236769Sobrien skipped. In both cases this continues until a `..eellssee' or `..eennddiiff' is 1069236769Sobrien found. 1070236769Sobrien 1071236769Sobrien For loops are typically used to apply a set of rules to a list of files. 1072236769Sobrien The syntax of a for loop is: 1073236769Sobrien 1074236769Sobrien ..ffoorr _v_a_r_i_a_b_l_e [_v_a_r_i_a_b_l_e _._._.] iinn _e_x_p_r_e_s_s_i_o_n 1075236769Sobrien <make-rules> 1076236769Sobrien ..eennddffoorr 1077236769Sobrien 1078236769Sobrien After the for eexxpprreessssiioonn is evaluated, it is split into words. On each 1079236769Sobrien iteration of the loop, one word is taken and assigned to each vvaarriiaabbllee, 1080236769Sobrien in order, and these vvaarriiaabblleess are substituted into the mmaakkee--rruulleess inside 1081236769Sobrien the body of the for loop. The number of words must come out even; that 1082236769Sobrien is, if there are three iteration variables, the number of words provided 1083236769Sobrien must be a multiple of three. 1084236769Sobrien 1085236769SobrienCCOOMMMMEENNTTSS 1086236769Sobrien Comments begin with a hash (`#') character, anywhere but in a shell com- 1087236769Sobrien mand line, and continue to the end of an unescaped new line. 1088236769Sobrien 1089236769SobrienSSPPEECCIIAALL SSOOUURRCCEESS ((AATTTTRRIIBBUUTTEESS)) 1090236769Sobrien ..EEXXEECC Target is never out of date, but always execute commands any- 1091236769Sobrien way. 1092236769Sobrien 1093236769Sobrien ..IIGGNNOORREE Ignore any errors from the commands associated with this tar- 1094236769Sobrien get, exactly as if they all were preceded by a dash (`-'). 1095236769Sobrien 1096236769Sobrien ..MMAADDEE Mark all sources of this target as being up-to-date. 1097236769Sobrien 1098236769Sobrien ..MMAAKKEE Execute the commands associated with this target even if the --nn 1099236769Sobrien or --tt options were specified. Normally used to mark recursive 1100236769Sobrien bbmmaakkee's. 1101236769Sobrien 1102236769Sobrien ..MMEETTAA Create a meta file for the target, even if it is flagged as 1103236769Sobrien ..PPHHOONNYY, ..MMAAKKEE, or ..SSPPEECCIIAALL. Usage in conjunction with ..MMAAKKEE is 1104236769Sobrien the most likely case. In "meta" mode, the target is out-of- 1105236769Sobrien date if the meta file is missing. 1106236769Sobrien 1107236769Sobrien ..NNOOMMEETTAA Do not create a meta file for the target. Meta files are also 1108236769Sobrien not created for ..PPHHOONNYY, ..MMAAKKEE, or ..SSPPEECCIIAALL targets. 1109236769Sobrien 1110236769Sobrien ..NNOOMMEETTAA__CCMMPP 1111236769Sobrien Ignore differences in commands when deciding if target is out 1112236769Sobrien of date. This is useful if the command contains a value which 1113236769Sobrien always changes. If the number of commands change, though, the 1114249033Ssjg target will still be out of date. The same effect applies to 1115249033Ssjg any command line that uses the variable _._O_O_D_A_T_E, which can be 1116249033Ssjg used for that purpose even when not otherwise needed or 1117249033Ssjg desired: 1118236769Sobrien 1119249033Ssjg 1120249033Ssjg skip-compare-for-some: 1121249033Ssjg @echo this will be compared 1122249033Ssjg @echo this will not ${.OODATE:M.NOMETA_CMP} 1123249033Ssjg @echo this will also be compared 1124249033Ssjg 1125249033Ssjg The ::MM pattern suppresses any expansion of the unwanted vari- 1126249033Ssjg able. 1127249033Ssjg 1128236769Sobrien ..NNOOPPAATTHH Do not search for the target in the directories specified by 1129236769Sobrien ..PPAATTHH. 1130236769Sobrien 1131236769Sobrien ..NNOOTTMMAAIINN Normally bbmmaakkee selects the first target it encounters as the 1132236769Sobrien default target to be built if no target was specified. This 1133236769Sobrien source prevents this target from being selected. 1134236769Sobrien 1135236769Sobrien ..OOPPTTIIOONNAALL 1136236769Sobrien If a target is marked with this attribute and bbmmaakkee can't fig- 1137236769Sobrien ure out how to create it, it will ignore this fact and assume 1138236769Sobrien the file isn't needed or already exists. 1139236769Sobrien 1140236769Sobrien ..PPHHOONNYY The target does not correspond to an actual file; it is always 1141236769Sobrien considered to be out of date, and will not be created with the 1142236769Sobrien --tt option. Suffix-transformation rules are not applied to 1143236769Sobrien ..PPHHOONNYY targets. 1144236769Sobrien 1145236769Sobrien ..PPRREECCIIOOUUSS 1146236769Sobrien When bbmmaakkee is interrupted, it normally removes any partially 1147236769Sobrien made targets. This source prevents the target from being 1148236769Sobrien removed. 1149236769Sobrien 1150236769Sobrien ..RREECCUURRSSIIVVEE 1151236769Sobrien Synonym for ..MMAAKKEE. 1152236769Sobrien 1153236769Sobrien ..SSIILLEENNTT Do not echo any of the commands associated with this target, 1154236769Sobrien exactly as if they all were preceded by an at sign (`@'). 1155236769Sobrien 1156236769Sobrien ..UUSSEE Turn the target into bbmmaakkee's version of a macro. When the tar- 1157236769Sobrien get is used as a source for another target, the other target 1158236769Sobrien acquires the commands, sources, and attributes (except for 1159236769Sobrien ..UUSSEE) of the source. If the target already has commands, the 1160236769Sobrien ..UUSSEE target's commands are appended to them. 1161236769Sobrien 1162236769Sobrien ..UUSSEEBBEEFFOORREE 1163236769Sobrien Exactly like ..UUSSEE, but prepend the ..UUSSEEBBEEFFOORREE target commands 1164236769Sobrien to the target. 1165236769Sobrien 1166236769Sobrien ..WWAAIITT If ..WWAAIITT appears in a dependency line, the sources that precede 1167236769Sobrien it are made before the sources that succeed it in the line. 1168236769Sobrien Since the dependents of files are not made until the file 1169236769Sobrien itself could be made, this also stops the dependents being 1170236769Sobrien built unless they are needed for another branch of the depen- 1171236769Sobrien dency tree. So given: 1172236769Sobrien 1173236769Sobrien x: a .WAIT b 1174236769Sobrien echo x 1175236769Sobrien a: 1176236769Sobrien echo a 1177236769Sobrien b: b1 1178236769Sobrien echo b 1179236769Sobrien b1: 1180236769Sobrien echo b1 1181236769Sobrien 1182236769Sobrien the output is always `a', `b1', `b', `x'. 1183236769Sobrien The ordering imposed by ..WWAAIITT is only relevant for parallel 1184236769Sobrien makes. 1185236769Sobrien 1186236769SobrienSSPPEECCIIAALL TTAARRGGEETTSS 1187236769Sobrien Special targets may not be included with other targets, i.e. they must be 1188236769Sobrien the only target specified. 1189236769Sobrien 1190236769Sobrien ..BBEEGGIINN Any command lines attached to this target are executed before 1191236769Sobrien anything else is done. 1192236769Sobrien 1193236769Sobrien ..DDEEFFAAUULLTT 1194236769Sobrien This is sort of a ..UUSSEE rule for any target (that was used only 1195236769Sobrien as a source) that bbmmaakkee can't figure out any other way to cre- 1196236769Sobrien ate. Only the shell script is used. The ..IIMMPPSSRRCC variable of a 1197236769Sobrien target that inherits ..DDEEFFAAUULLTT's commands is set to the target's 1198236769Sobrien own name. 1199236769Sobrien 1200236769Sobrien ..EENNDD Any command lines attached to this target are executed after 1201236769Sobrien everything else is done. 1202236769Sobrien 1203236769Sobrien ..EERRRROORR Any command lines attached to this target are executed when 1204236769Sobrien another target fails. The ..EERRRROORR__TTAARRGGEETT variable is set to the 1205236769Sobrien target that failed. See also MMAAKKEE__PPRRIINNTT__VVAARR__OONN__EERRRROORR. 1206236769Sobrien 1207236769Sobrien ..IIGGNNOORREE Mark each of the sources with the ..IIGGNNOORREE attribute. If no 1208236769Sobrien sources are specified, this is the equivalent of specifying the 1209236769Sobrien --ii option. 1210236769Sobrien 1211236769Sobrien ..IINNTTEERRRRUUPPTT 1212236769Sobrien If bbmmaakkee is interrupted, the commands for this target will be 1213236769Sobrien executed. 1214236769Sobrien 1215236769Sobrien ..MMAAIINN If no target is specified when bbmmaakkee is invoked, this target 1216236769Sobrien will be built. 1217236769Sobrien 1218236769Sobrien ..MMAAKKEEFFLLAAGGSS 1219236769Sobrien This target provides a way to specify flags for bbmmaakkee when the 1220236769Sobrien makefile is used. The flags are as if typed to the shell, 1221236769Sobrien though the --ff option will have no effect. 1222236769Sobrien 1223236769Sobrien ..NNOOPPAATTHH Apply the ..NNOOPPAATTHH attribute to any specified sources. 1224236769Sobrien 1225236769Sobrien ..NNOOTTPPAARRAALLLLEELL 1226236769Sobrien Disable parallel mode. 1227236769Sobrien 1228236769Sobrien ..NNOO__PPAARRAALLLLEELL 1229236769Sobrien Synonym for ..NNOOTTPPAARRAALLLLEELL, for compatibility with other pmake 1230236769Sobrien variants. 1231236769Sobrien 1232236769Sobrien ..OORRDDEERR The named targets are made in sequence. This ordering does not 1233236769Sobrien add targets to the list of targets to be made. Since the depen- 1234236769Sobrien dents of a target do not get built until the target itself could 1235236769Sobrien be built, unless `a' is built by another part of the dependency 1236236769Sobrien graph, the following is a dependency loop: 1237236769Sobrien 1238236769Sobrien .ORDER: b a 1239236769Sobrien b: a 1240236769Sobrien 1241236769Sobrien The ordering imposed by ..OORRDDEERR is only relevant for parallel 1242236769Sobrien makes. 1243236769Sobrien 1244236769Sobrien ..PPAATTHH The sources are directories which are to be searched for files 1245236769Sobrien not found in the current directory. If no sources are speci- 1246236769Sobrien fied, any previously specified directories are deleted. If the 1247236769Sobrien source is the special ..DDOOTTLLAASSTT target, then the current working 1248236769Sobrien directory is searched last. 1249236769Sobrien 1250236769Sobrien ..PPHHOONNYY Apply the ..PPHHOONNYY attribute to any specified sources. 1251236769Sobrien 1252236769Sobrien ..PPRREECCIIOOUUSS 1253236769Sobrien Apply the ..PPRREECCIIOOUUSS attribute to any specified sources. If no 1254236769Sobrien sources are specified, the ..PPRREECCIIOOUUSS attribute is applied to 1255236769Sobrien every target in the file. 1256236769Sobrien 1257236769Sobrien ..SSHHEELLLL Sets the shell that bbmmaakkee will use to execute commands. The 1258236769Sobrien sources are a set of _f_i_e_l_d_=_v_a_l_u_e pairs. 1259236769Sobrien 1260236769Sobrien _n_a_m_e This is the minimal specification, used to select 1261236769Sobrien one of the builtin shell specs; _s_h, _k_s_h, and _c_s_h. 1262236769Sobrien 1263236769Sobrien _p_a_t_h Specifies the path to the shell. 1264236769Sobrien 1265236769Sobrien _h_a_s_E_r_r_C_t_l Indicates whether the shell supports exit on error. 1266236769Sobrien 1267236769Sobrien _c_h_e_c_k The command to turn on error checking. 1268236769Sobrien 1269236769Sobrien _i_g_n_o_r_e The command to disable error checking. 1270236769Sobrien 1271236769Sobrien _e_c_h_o The command to turn on echoing of commands executed. 1272236769Sobrien 1273236769Sobrien _q_u_i_e_t The command to turn off echoing of commands exe- 1274236769Sobrien cuted. 1275236769Sobrien 1276236769Sobrien _f_i_l_t_e_r The output to filter after issuing the _q_u_i_e_t com- 1277236769Sobrien mand. It is typically identical to _q_u_i_e_t. 1278236769Sobrien 1279236769Sobrien _e_r_r_F_l_a_g The flag to pass the shell to enable error checking. 1280236769Sobrien 1281236769Sobrien _e_c_h_o_F_l_a_g The flag to pass the shell to enable command echo- 1282236769Sobrien ing. 1283236769Sobrien 1284236769Sobrien _n_e_w_l_i_n_e The string literal to pass the shell that results in 1285236769Sobrien a single newline character when used outside of any 1286236769Sobrien quoting characters. 1287236769Sobrien Example: 1288236769Sobrien 1289236769Sobrien .SHELL: name=ksh path=/bin/ksh hasErrCtl=true \ 1290236769Sobrien check="set -e" ignore="set +e" \ 1291236769Sobrien echo="set -v" quiet="set +v" filter="set +v" \ 1292236769Sobrien echoFlag=v errFlag=e newline="'\n'" 1293236769Sobrien 1294236769Sobrien ..SSIILLEENNTT Apply the ..SSIILLEENNTT attribute to any specified sources. If no 1295236769Sobrien sources are specified, the ..SSIILLEENNTT attribute is applied to every 1296236769Sobrien command in the file. 1297236769Sobrien 1298249033Ssjg ..SSTTAALLEE This target gets run when a dependency file contains stale 1299249033Ssjg entries, having _._A_L_L_S_R_C set to the name of that dependency file. 1300249033Ssjg 1301236769Sobrien ..SSUUFFFFIIXXEESS 1302236769Sobrien Each source specifies a suffix to bbmmaakkee. If no sources are 1303236769Sobrien specified, any previously specified suffixes are deleted. It 1304236769Sobrien allows the creation of suffix-transformation rules. 1305236769Sobrien 1306236769Sobrien Example: 1307236769Sobrien 1308236769Sobrien .SUFFIXES: .o 1309236769Sobrien .c.o: 1310236769Sobrien cc -o ${.TARGET} -c ${.IMPSRC} 1311236769Sobrien 1312236769SobrienEENNVVIIRROONNMMEENNTT 1313236769Sobrien bbmmaakkee uses the following environment variables, if they exist: MACHINE, 1314236769Sobrien MACHINE_ARCH, MAKE, MAKEFLAGS, MAKEOBJDIR, MAKEOBJDIRPREFIX, MAKESYSPATH, 1315236769Sobrien PWD, and TMPDIR. 1316236769Sobrien 1317236769Sobrien MAKEOBJDIRPREFIX and MAKEOBJDIR may only be set in the environment or on 1318236769Sobrien the command line to bbmmaakkee and not as makefile variables; see the descrip- 1319236769Sobrien tion of `_._O_B_J_D_I_R' for more details. 1320236769Sobrien 1321236769SobrienFFIILLEESS 1322236769Sobrien .depend list of dependencies 1323236769Sobrien Makefile list of dependencies 1324236769Sobrien makefile list of dependencies 1325236769Sobrien sys.mk system makefile 1326236769Sobrien /usr/share/mk system makefile directory 1327236769Sobrien 1328236769SobrienCCOOMMPPAATTIIBBIILLIITTYY 1329236769Sobrien The basic make syntax is compatible between different versions of make, 1330236769Sobrien however the special variables, variable modifiers and conditionals are 1331236769Sobrien not. 1332236769Sobrien 1333236769Sobrien The way that parallel makes are scheduled changed in NetBSD 4.0 so that 1334236769Sobrien .ORDER and .WAIT apply recursively to the dependent nodes. The algo- 1335236769Sobrien rithms used may change again in the future. 1336236769Sobrien 1337236769Sobrien The way that .for loop variables are substituted changed after NetBSD 5.0 1338236769Sobrien so that they still appear to be variable expansions. In particular this 1339236769Sobrien stops them being treated as syntax, and removes some obscure problems 1340236769Sobrien using them in .if statements. 1341236769Sobrien 1342236769SobrienSSEEEE AALLSSOO 1343236769Sobrien mkdep(1) 1344236769Sobrien 1345236769SobrienHHIISSTTOORRYY 1346236769Sobrien bbmmaakkee is derived from NetBSD make(1). It uses autoconf to facilitate 1347236769Sobrien portability to other platforms. 1348236769Sobrien 1349242102Ssjg A make command appeared in Version 7 AT&T UNIX. This make implementation 1350242102Ssjg is based on Adam De Boor's pmake program which was written for Sprite at 1351242102Ssjg Berkeley. It was designed to be a parallel distributed make running jobs 1352242102Ssjg on different machines using a daemon called ``customs''. 1353240330Smarcel 1354242102SsjgBBUUGGSS 1355242102Ssjg The make syntax is difficult to parse without actually acting of the 1356242102Ssjg data. For instance finding the end of a variable use should involve 1357242102Ssjg scanning each the modifiers using the correct terminator for each field. 1358242102Ssjg In many places make just counts {} and () in order to find the end of a 1359242102Ssjg variable expansion. 1360240330Smarcel 1361242102Ssjg There is no way of escaping a space character in a filename. 1362240330Smarcel 1363249033SsjgNetBSD 5.1 March 30, 2013 NetBSD 5.1 1364