acx_nlnetlabs.m4 revision 269257
1# acx_nlnetlabs.m4 - common macros for configure checks 2# Copyright 2009, Wouter Wijngaards, NLnet Labs. 3# BSD licensed. 4# 5# Version 26 6# 2013-09-19 FLTO help text improved. 7# 2013-07-18 Enable ACX_CHECK_COMPILER_FLAG to test for -Wstrict-prototypes 8# 2013-06-25 FLTO has --disable-flto option. 9# 2013-05-03 Update W32_SLEEP for newer mingw that links but not defines it. 10# 2013-03-22 Fix ACX_RSRC_VERSION for long version numbers. 11# 2012-02-09 Fix AHX_MEMCMP_BROKEN with undef in compat/memcmp.h. 12# 2012-01-20 Fix COMPILER_FLAGS_UNBOUND for gcc 4.6.2 assigned-not-used-warns. 13# 2011-12-05 Fix getaddrinfowithincludes on windows with fedora16 mingw32-gcc. 14# Fix ACX_MALLOC for redefined malloc error. 15# Fix GETADDRINFO_WITH_INCLUDES to add -lws2_32 16# 2011-11-10 Fix FLTO test to not drop a.out in current directory. 17# 2011-11-01 Fix FLTO test for llvm on Lion. 18# 2011-08-01 Fix nonblock test (broken at v13). 19# 2011-08-01 Fix autoconf 2.68 warnings 20# 2011-06-23 Add ACX_CHECK_FLTO to check -flto. 21# 2010-08-16 Fix FLAG_OMITTED for AS_TR_CPP changes in autoconf-2.66. 22# 2010-07-02 Add check for ss_family (for minix). 23# 2010-04-26 Fix to use CPPFLAGS for CHECK_COMPILER_FLAGS. 24# 2010-03-01 Fix RPATH using CONFIG_COMMANDS to run at the very end. 25# 2010-02-18 WITH_SSL outputs the LIBSSL_LDFLAGS, LIBS, CPPFLAGS separate, -ldl 26# 2010-02-01 added ACX_CHECK_MEMCMP_SIGNED, AHX_MEMCMP_BROKEN 27# 2010-01-20 added AHX_COONFIG_STRLCAT 28# 2009-07-14 U_CHAR detection improved for windows crosscompile. 29# added ACX_FUNC_MALLOC 30# fixup some #if to #ifdef 31# NONBLOCKING test for mingw crosscompile. 32# 2009-07-13 added ACX_WITH_SSL_OPTIONAL 33# 2009-07-03 fixup LDFLAGS for empty ssl dir. 34# 35# Automates some of the checking constructs. Aims at portability for POSIX. 36# Documentation for functions is below. 37# 38# the following macro's are provided in this file: 39# (see below for details on each macro). 40# 41# ACX_ESCAPE_BACKSLASH - escape backslashes in var for C-preproc. 42# ACX_RSRC_VERSION - create windows resource version number. 43# ACX_CHECK_COMPILER_FLAG - see if cc supports a flag. 44# ACX_CHECK_ERROR_FLAGS - see which flag is -werror (used below). 45# ACX_CHECK_COMPILER_FLAG_NEEDED - see if flags make the code compile cleanly. 46# ACX_DEPFLAG - find cc dependency flags. 47# ACX_DETERMINE_EXT_FLAGS_UNBOUND - find out which flags enable BSD and POSIX. 48# ACX_CHECK_FORMAT_ATTRIBUTE - find cc printf format syntax. 49# ACX_CHECK_UNUSED_ATTRIBUTE - find cc variable unused syntax. 50# ACX_CHECK_FLTO - see if cc supports -flto and use it if so. 51# ACX_LIBTOOL_C_ONLY - create libtool for C only, improved. 52# ACX_TYPE_U_CHAR - u_char type. 53# ACX_TYPE_RLIM_T - rlim_t type. 54# ACX_TYPE_SOCKLEN_T - socklen_t type. 55# ACX_TYPE_IN_ADDR_T - in_addr_t type. 56# ACX_TYPE_IN_PORT_T - in_port_t type. 57# ACX_ARG_RPATH - add --disable-rpath option. 58# ACX_WITH_SSL - add --with-ssl option, link -lcrypto. 59# ACX_WITH_SSL_OPTIONAL - add --with-ssl option, link -lcrypto, 60# where --without-ssl is also accepted 61# ACX_LIB_SSL - setup to link -lssl. 62# ACX_SYS_LARGEFILE - improved sys_largefile, fseeko, >2G files. 63# ACX_CHECK_GETADDRINFO_WITH_INCLUDES - find getaddrinfo, portably. 64# ACX_FUNC_DEPRECATED - see if func is deprecated. 65# ACX_CHECK_NONBLOCKING_BROKEN - see if nonblocking sockets really work. 66# ACX_MKDIR_ONE_ARG - determine mkdir(2) number of arguments. 67# ACX_FUNC_IOCTLSOCKET - find ioctlsocket, portably. 68# ACX_FUNC_MALLOC - check malloc, define replacement . 69# AHX_CONFIG_FORMAT_ATTRIBUTE - config.h text for format. 70# AHX_CONFIG_UNUSED_ATTRIBUTE - config.h text for unused. 71# AHX_CONFIG_FSEEKO - define fseeko, ftello fallback. 72# AHX_CONFIG_RAND_MAX - define RAND_MAX if needed. 73# AHX_CONFIG_MAXHOSTNAMELEN - define MAXHOSTNAMELEN if needed. 74# AHX_CONFIG_IPV6_MIN_MTU - define IPV6_MIN_MTU if needed. 75# AHX_CONFIG_SNPRINTF - snprintf compat prototype 76# AHX_CONFIG_INET_PTON - inet_pton compat prototype 77# AHX_CONFIG_INET_NTOP - inet_ntop compat prototype 78# AHX_CONFIG_INET_ATON - inet_aton compat prototype 79# AHX_CONFIG_MEMMOVE - memmove compat prototype 80# AHX_CONFIG_STRLCAT - strlcat compat prototype 81# AHX_CONFIG_STRLCPY - strlcpy compat prototype 82# AHX_CONFIG_GMTIME_R - gmtime_r compat prototype 83# AHX_CONFIG_W32_SLEEP - w32 compat for sleep 84# AHX_CONFIG_W32_USLEEP - w32 compat for usleep 85# AHX_CONFIG_W32_RANDOM - w32 compat for random 86# AHX_CONFIG_W32_SRANDOM - w32 compat for srandom 87# AHX_CONFIG_W32_FD_SET_T - w32 detection of FD_SET_T. 88# ACX_CFLAGS_STRIP - strip one flag from CFLAGS 89# ACX_STRIP_EXT_FLAGS - strip extension flags from CFLAGS 90# AHX_CONFIG_FLAG_OMITTED - define omitted flag 91# AHX_CONFIG_FLAG_EXT - define omitted extension flag 92# AHX_CONFIG_EXT_FLAGS - define the stripped extension flags 93# ACX_CHECK_MEMCMP_SIGNED - check if memcmp uses signed characters. 94# AHX_MEMCMP_BROKEN - replace memcmp func for CHECK_MEMCMP_SIGNED. 95# ACX_CHECK_SS_FAMILY - check for sockaddr_storage.ss_family 96# 97 98dnl Escape backslashes as \\, for C:\ paths, for the C preprocessor defines. 99dnl for example, ACX_ESCAPE_BACKSLASH($from_var, to_var) 100dnl $1: the text to change. 101dnl $2: the result. 102AC_DEFUN([ACX_ESCAPE_BACKSLASH], [$2="`echo $1 | sed -e 's/\\\\/\\\\\\\\/g'`" 103]) 104 105dnl Calculate comma separated windows-resource numbers from package version. 106dnl Picks the first three(,0) or four numbers out of the name. 107dnl $1: variable for the result 108AC_DEFUN([ACX_RSRC_VERSION], 109[$1=[`echo $PACKAGE_VERSION | sed -e 's/^[^0-9]*\([0-9][0-9]*\)[^0-9][^0-9]*\([0-9][0-9]*\)[^0-9][^0-9]*\([0-9][0-9]*\)[^0-9][^0-9]*\([0-9][0-9]*\).*$/\1,\2,\3,\4/' -e 's/^[^0-9]*\([0-9][0-9]*\)[^0-9][^0-9]*\([0-9][0-9]*\)[^0-9][^0-9]*\([0-9][0-9]*\)[^0-9]*$/\1,\2,\3,0/' `] 110]) 111 112dnl Routine to help check for compiler flags. 113dnl Checks if the compiler will accept the flag. 114dnl $1: the flag without a - in front, so g to check -g. 115dnl $2: executed if yes 116dnl $3: executed if no 117AC_DEFUN([ACX_CHECK_COMPILER_FLAG], 118[ 119AC_REQUIRE([AC_PROG_CC]) 120AC_MSG_CHECKING(whether $CC supports -$1) 121cache=`echo $1 | sed 'y%.=/+-%___p_%'` 122AC_CACHE_VAL(cv_prog_cc_flag_$cache, 123[ 124echo 'void f(void){}' >conftest.c 125if test -z "`$CC $CPPFLAGS $CFLAGS -$1 -c conftest.c 2>&1`"; then 126eval "cv_prog_cc_flag_$cache=yes" 127else 128eval "cv_prog_cc_flag_$cache=no" 129fi 130rm -f conftest conftest.o conftest.c 131]) 132if eval "test \"`echo '$cv_prog_cc_flag_'$cache`\" = yes"; then 133AC_MSG_RESULT(yes) 134: 135$2 136else 137AC_MSG_RESULT(no) 138: 139$3 140fi 141]) 142 143dnl setup flags for ACX_CHECK_COMPILER_FLAG_NEEDED 144dnl ERRFLAG: result, compiler flag to turn warnings into errors 145AC_DEFUN([ACX_CHECK_ERROR_FLAGS], 146[ 147ACX_CHECK_COMPILER_FLAG(Werror, [ERRFLAG="-Werror"], [ERRFLAG="-errwarn"]) 148ACX_CHECK_COMPILER_FLAG(Wall, [ERRFLAG="$ERRFLAG -Wall"], 149 [ERRFLAG="$ERRFLAG -errfmt"]) 150]) 151 152dnl Routine to help check for needed compiler flags. 153dnl $1: flags for CC 154dnl $2: the includes and code 155dnl $3: if the given code only compiles with the flag, execute argument 3 156dnl $4: if the given code compiles without the flag, execute argument 4 157dnl $5: with and without flag the compile fails, execute argument 5. 158AC_DEFUN([ACX_CHECK_COMPILER_FLAG_NEEDED], 159[ 160AC_REQUIRE([AC_PROG_CC]) 161AC_REQUIRE([ACX_CHECK_ERROR_FLAGS]) 162AC_MSG_CHECKING(whether we need $1 as a flag for $CC) 163cache=AS_TR_SH($1) 164dnl cache=`echo $1 | sed 'y%.=/+- %___p__%'` 165AC_CACHE_VAL(cv_prog_cc_flag_needed_$cache, 166[ 167echo '$2' > conftest.c 168echo 'void f(){}' >>conftest.c 169if test -z "`$CC $CPPFLAGS $CFLAGS $ERRFLAG -c conftest.c 2>&1`"; then 170eval "cv_prog_cc_flag_needed_$cache=no" 171else 172[ 173if test -z "`$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1`"; then 174eval "cv_prog_cc_flag_needed_$cache=yes" 175else 176eval "cv_prog_cc_flag_needed_$cache=fail" 177#echo 'Test with flag fails too!' 178#cat conftest.c 179#echo "$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1" 180#echo `$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1` 181#exit 1 182fi 183] 184fi 185rm -f conftest conftest.c conftest.o 186]) 187if eval "test \"`echo '$cv_prog_cc_flag_needed_'$cache`\" = yes"; then 188AC_MSG_RESULT(yes) 189: 190$3 191else 192if eval "test \"`echo '$cv_prog_cc_flag_needed_'$cache`\" = no"; then 193AC_MSG_RESULT(no) 194#echo 'Test with flag is no!' 195#cat conftest.c 196#echo "$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1" 197#echo `$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1` 198#exit 1 199: 200$4 201else 202AC_MSG_RESULT(failed) 203: 204$5 205fi 206fi 207]) 208 209dnl Check for CC dependency flag 210dnl DEPFLAG: set to flag that generates dependencies. 211AC_DEFUN([ACX_DEPFLAG], 212[ 213AC_MSG_CHECKING([$CC dependency flag]) 214echo 'void f(){}' >conftest.c 215if test "`$CC -MM conftest.c 2>&1`" = "conftest.o: conftest.c"; then 216 DEPFLAG="-MM" 217else 218 if test "`$CC -xM1 conftest.c 2>&1`" = "conftest.o: conftest.c"; then 219 DEPFLAG="-xM1" 220 else 221 DEPFLAG="-MM" # dunno do something 222 fi 223fi 224AC_MSG_RESULT($DEPFLAG) 225rm -f conftest.c 226AC_SUBST(DEPFLAG) 227]) 228 229dnl Determine flags that gives POSIX and BSD functionality. 230dnl CFLAGS is modified for the result. 231AC_DEFUN([ACX_DETERMINE_EXT_FLAGS_UNBOUND], 232[ 233ACX_CHECK_COMPILER_FLAG(std=c99, [C99FLAG="-std=c99"]) 234ACX_CHECK_COMPILER_FLAG(xc99, [C99FLAG="-xc99"]) 235 236AC_CHECK_HEADERS([getopt.h time.h],,, [AC_INCLUDES_DEFAULT]) 237 238ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_XOPEN_SOURCE_EXTENDED=1 -D_ALL_SOURCE, 239[ 240#include "confdefs.h" 241#include <stdlib.h> 242#include <ctype.h> 243#include <sys/time.h> 244#ifdef HAVE_TIME_H 245#include <time.h> 246#endif 247#include <unistd.h> 248#include <netdb.h> 249#ifdef HAVE_GETOPT_H 250#include <getopt.h> 251#endif 252 253int test() { 254 int a; 255 char **opts = NULL; 256 struct timeval tv; 257 char *t; 258 time_t time = 0; 259 char *buf = NULL; 260 const char* str = NULL; 261 struct msghdr msg; 262 msg.msg_control = 0; 263 t = ctime_r(&time, buf); 264 tv.tv_usec = 10; 265 srandom(32); 266 a = getopt(2, opts, "a"); 267 a = isascii(32); 268 str = gai_strerror(0); 269 if(str && t && tv.tv_usec && msg.msg_control) 270 a = 0; 271 return a; 272} 273], [CFLAGS="$CFLAGS $C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_XOPEN_SOURCE_EXTENDED=1 -D_ALL_SOURCE"]) 274 275ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ALL_SOURCE, 276[ 277#include "confdefs.h" 278#include <stdlib.h> 279#include <ctype.h> 280#include <sys/time.h> 281#ifdef HAVE_TIME_H 282#include <time.h> 283#endif 284#include <unistd.h> 285#include <netdb.h> 286#ifdef HAVE_GETOPT_H 287#include <getopt.h> 288#endif 289 290int test() { 291 int a; 292 char **opts = NULL; 293 struct timeval tv; 294 char *t; 295 time_t time = 0; 296 char *buf = NULL; 297 const char* str = NULL; 298 struct msghdr msg; 299 msg.msg_control = 0; 300 t = ctime_r(&time, buf); 301 tv.tv_usec = 10; 302 srandom(32); 303 a = getopt(2, opts, "a"); 304 a = isascii(32); 305 str = gai_strerror(0); 306 if(str && t && tv.tv_usec && msg.msg_control) 307 a = 0; 308 return a; 309} 310], [CFLAGS="$CFLAGS $C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ALL_SOURCE"]) 311 312ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG, 313[ 314#include <stdbool.h> 315#include <ctype.h> 316int test() { 317 int a = 0; 318 return a; 319} 320], [CFLAGS="$CFLAGS $C99FLAG"]) 321 322ACX_CHECK_COMPILER_FLAG_NEEDED(-D_BSD_SOURCE, 323[ 324#include <ctype.h> 325 326int test() { 327 int a; 328 a = isascii(32); 329 return a; 330} 331], [CFLAGS="$CFLAGS -D_BSD_SOURCE"]) 332 333ACX_CHECK_COMPILER_FLAG_NEEDED(-D_GNU_SOURCE, 334[ 335#include <netinet/in.h> 336 337int test() { 338 struct in6_pktinfo inf; 339 int a = (int)sizeof(inf); 340 return a; 341} 342], [CFLAGS="$CFLAGS -D_GNU_SOURCE"]) 343 344# check again for GNU_SOURCE for setresgid. May fail if setresgid 345# is not available at all. -D_FRSRESGID is to make this check unique. 346# otherwise we would get the previous cached result. 347ACX_CHECK_COMPILER_FLAG_NEEDED(-D_GNU_SOURCE -D_FRSRESGID, 348[ 349#include <unistd.h> 350 351int test() { 352 int a = setresgid(0,0,0); 353 a = setresuid(0,0,0); 354 return a; 355} 356], [CFLAGS="$CFLAGS -D_GNU_SOURCE"]) 357 358ACX_CHECK_COMPILER_FLAG_NEEDED(-D_POSIX_C_SOURCE=200112, 359[ 360#include "confdefs.h" 361#ifdef HAVE_TIME_H 362#include <time.h> 363#endif 364#include <netdb.h> 365 366int test() { 367 int a = 0; 368 char *t; 369 time_t time = 0; 370 char *buf = NULL; 371 const char* str = NULL; 372 t = ctime_r(&time, buf); 373 str = gai_strerror(0); 374 if(t && str) 375 a = 0; 376 return a; 377} 378], [CFLAGS="$CFLAGS -D_POSIX_C_SOURCE=200112"]) 379 380ACX_CHECK_COMPILER_FLAG_NEEDED(-D__EXTENSIONS__, 381[ 382#include "confdefs.h" 383#include <stdlib.h> 384#include <ctype.h> 385#include <sys/time.h> 386#ifdef HAVE_TIME_H 387#include <time.h> 388#endif 389#include <unistd.h> 390#ifdef HAVE_GETOPT_H 391#include <getopt.h> 392#endif 393 394int test() { 395 int a; 396 char **opts = NULL; 397 struct timeval tv; 398 tv.tv_usec = 10; 399 srandom(32); 400 a = getopt(2, opts, "a"); 401 a = isascii(32); 402 if(tv.tv_usec) 403 a = 0; 404 return a; 405} 406], [CFLAGS="$CFLAGS -D__EXTENSIONS__"]) 407 408])dnl End of ACX_DETERMINE_EXT_FLAGS_UNBOUND 409 410dnl Check if CC supports -flto. 411dnl in a way that supports clang and suncc (that flag does something else, 412dnl but fails to link). It sets it in CFLAGS if it works. 413AC_DEFUN([ACX_CHECK_FLTO], [ 414 AC_ARG_ENABLE([flto], AS_HELP_STRING([--disable-flto], [Disable link-time optimization (gcc specific option)])) 415 AS_IF([test "x$enable_flto" != "xno"], [ 416 AC_MSG_CHECKING([if $CC supports -flto]) 417 BAKCFLAGS="$CFLAGS" 418 CFLAGS="$CFLAGS -flto" 419 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [ 420 if $CC $CFLAGS -o conftest conftest.c 2>&1 | grep "warning: no debug symbols in executable" >/dev/null; then 421 CFLAGS="$BAKCFLAGS" 422 AC_MSG_RESULT(no) 423 else 424 AC_MSG_RESULT(yes) 425 fi 426 rm -f conftest conftest.c conftest.o 427 ], [CFLAGS="$BAKCFLAGS" ; AC_MSG_RESULT(no)]) 428 ]) 429]) 430 431dnl Check the printf-format attribute (if any) 432dnl result in HAVE_ATTR_FORMAT. 433dnl Make sure you also include the AHX_CONFIG_FORMAT_ATTRIBUTE. 434AC_DEFUN([ACX_CHECK_FORMAT_ATTRIBUTE], 435[AC_REQUIRE([AC_PROG_CC]) 436AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "format" attribute) 437AC_CACHE_VAL(ac_cv_c_format_attribute, 438[ac_cv_c_format_attribute=no 439AC_TRY_COMPILE( 440[#include <stdio.h> 441void f (char *format, ...) __attribute__ ((format (printf, 1, 2))); 442void (*pf) (char *format, ...) __attribute__ ((format (printf, 1, 2))); 443], [ 444 f ("%s", "str"); 445], 446[ac_cv_c_format_attribute="yes"], 447[ac_cv_c_format_attribute="no"]) 448]) 449 450AC_MSG_RESULT($ac_cv_c_format_attribute) 451if test $ac_cv_c_format_attribute = yes; then 452 AC_DEFINE(HAVE_ATTR_FORMAT, 1, [Whether the C compiler accepts the "format" attribute]) 453fi 454])dnl End of ACX_CHECK_FORMAT_ATTRIBUTE 455 456dnl Setup ATTR_FORMAT config.h parts. 457dnl make sure you call ACX_CHECK_FORMAT_ATTRIBUTE also. 458AC_DEFUN([AHX_CONFIG_FORMAT_ATTRIBUTE], 459[ 460#ifdef HAVE_ATTR_FORMAT 461# define ATTR_FORMAT(archetype, string_index, first_to_check) \ 462 __attribute__ ((format (archetype, string_index, first_to_check))) 463#else /* !HAVE_ATTR_FORMAT */ 464# define ATTR_FORMAT(archetype, string_index, first_to_check) /* empty */ 465#endif /* !HAVE_ATTR_FORMAT */ 466]) 467 468dnl Check how to mark function arguments as unused. 469dnl result in HAVE_ATTR_UNUSED. 470dnl Make sure you include AHX_CONFIG_UNUSED_ATTRIBUTE also. 471AC_DEFUN([ACX_CHECK_UNUSED_ATTRIBUTE], 472[AC_REQUIRE([AC_PROG_CC]) 473AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "unused" attribute) 474AC_CACHE_VAL(ac_cv_c_unused_attribute, 475[ac_cv_c_unused_attribute=no 476AC_TRY_COMPILE( 477[#include <stdio.h> 478void f (char *u __attribute__((unused))); 479], [ 480 f ("x"); 481], 482[ac_cv_c_unused_attribute="yes"], 483[ac_cv_c_unused_attribute="no"]) 484]) 485 486dnl Setup ATTR_UNUSED config.h parts. 487dnl make sure you call ACX_CHECK_UNUSED_ATTRIBUTE also. 488AC_DEFUN([AHX_CONFIG_UNUSED_ATTRIBUTE], 489[ 490#if defined(DOXYGEN) 491# define ATTR_UNUSED(x) x 492#elif defined(__cplusplus) 493# define ATTR_UNUSED(x) 494#elif defined(HAVE_ATTR_UNUSED) 495# define ATTR_UNUSED(x) x __attribute__((unused)) 496#else /* !HAVE_ATTR_UNUSED */ 497# define ATTR_UNUSED(x) x 498#endif /* !HAVE_ATTR_UNUSED */ 499]) 500 501AC_MSG_RESULT($ac_cv_c_unused_attribute) 502if test $ac_cv_c_unused_attribute = yes; then 503 AC_DEFINE(HAVE_ATTR_UNUSED, 1, [Whether the C compiler accepts the "unused" attribute]) 504fi 505])dnl 506 507dnl Pre-fun for ACX_LIBTOOL_C_ONLY 508AC_DEFUN([ACX_LIBTOOL_C_PRE], [ 509# skip these tests, we do not need them. 510AC_DEFUN([AC_PROG_F77], [:]) 511AC_DEFUN([AC_PROG_FC], [:]) 512AC_DEFUN([AC_PROG_CXX], [:]) 513AC_DEFUN([AC_PROG_CXXCPP], [:]) 514AC_DEFUN([AC_PROG_OBJC], [:]) 515AC_DEFUN([AC_PROG_OBJCCPP], [:]) 516AC_DEFUN([AC_LIBTOOL_CXX], [:]) 517AC_DEFUN([AC_LIBTOOL_F77], [:]) 518# always use ./libtool unless override from commandline (libtool=mylibtool) 519if test -z "$libtool"; then 520 libtool="./libtool" 521fi 522AC_SUBST(libtool) 523# avoid libtool max commandline length test on systems that fork slowly. 524AC_CANONICAL_HOST 525if echo "$host_os" | grep "sunos4" >/dev/null; then 526 lt_cv_sys_max_cmd_len=32750; 527fi 528AC_PATH_TOOL(AR, ar, [false]) 529if test $AR = false; then 530 AC_MSG_ERROR([Cannot find 'ar', please extend PATH to include it]) 531fi 532]) 533 534dnl Perform libtool check, portably, only for C 535AC_DEFUN([ACX_LIBTOOL_C_ONLY], [ 536dnl as a requirement so that is gets called before LIBTOOL 537dnl because libtools 'AC_REQUIRE' names are right after this one, before 538dnl this function contents. 539AC_REQUIRE([ACX_LIBTOOL_C_PRE]) 540AC_PROG_LIBTOOL 541]) 542 543dnl Detect if u_char type is defined, otherwise define it. 544AC_DEFUN([ACX_TYPE_U_CHAR], 545[AC_CHECK_TYPE([u_char], , 546 [AC_DEFINE([u_char], [unsigned char], [Define to 'unsigned char if not defined])], [ 547AC_INCLUDES_DEFAULT 548#ifdef HAVE_WINSOCK2_H 549# include <winsock2.h> 550#endif 551]) ]) 552 553dnl Detect if rlim_t type is defined, otherwise define it. 554AC_DEFUN([ACX_TYPE_RLIM_T], 555[AC_CHECK_TYPE(rlim_t, , 556 [AC_DEFINE([rlim_t], [unsigned long], [Define to 'int' if not defined])], [ 557AC_INCLUDES_DEFAULT 558#ifdef HAVE_SYS_RESOURCE_H 559# include <sys/resource.h> 560#endif 561]) ]) 562 563dnl Detect if socklen_t type is defined, otherwise define it. 564AC_DEFUN([ACX_TYPE_SOCKLEN_T], 565[ 566AC_CHECK_TYPE(socklen_t, , 567 [AC_DEFINE([socklen_t], [int], [Define to 'int' if not defined])], [ 568AC_INCLUDES_DEFAULT 569#ifdef HAVE_SYS_SOCKET_H 570# include <sys/socket.h> 571#endif 572#ifdef HAVE_WS2TCPIP_H 573# include <ws2tcpip.h> 574#endif 575]) ]) 576 577dnl Detect if in_addr_t type is defined, otherwise define it. 578AC_DEFUN([ACX_TYPE_IN_ADDR_T], 579[ AC_CHECK_TYPE(in_addr_t, [], [AC_DEFINE([in_addr_t], [uint32_t], [in_addr_t])], [ 580AC_INCLUDES_DEFAULT 581#ifdef HAVE_SYS_TYPES_H 582# include <sys/types.h> 583#endif 584#ifdef HAVE_NETINET_IN_H 585# include <netinet/in.h> 586#endif 587]) ]) 588 589dnl Detect if in_port_t type is defined, otherwise define it. 590AC_DEFUN([ACX_TYPE_IN_PORT_T], 591[ AC_CHECK_TYPE(in_port_t, [], [AC_DEFINE([in_port_t], [uint16_t], [in_port_t])], [ 592AC_INCLUDES_DEFAULT 593#ifdef HAVE_SYS_TYPES_H 594# include <sys/types.h> 595#endif 596#ifdef HAVE_NETINET_IN_H 597# include <netinet/in.h> 598#endif 599]) ]) 600 601dnl Add option to disable the evil rpath. Check whether to use rpath or not. 602dnl Adds the --disable-rpath option. Uses trick to edit the ./libtool. 603AC_DEFUN([ACX_ARG_RPATH], 604[ 605AC_ARG_ENABLE(rpath, 606 [ --disable-rpath disable hardcoded rpath (default=enabled)], 607 enable_rpath=$enableval, enable_rpath=yes) 608if test "x$enable_rpath" = xno; then 609 dnl AC_MSG_RESULT([Fixing libtool for -rpath problems.]) 610 AC_CONFIG_COMMANDS([disable-rpath], [ 611 sed < libtool > libtool-2 \ 612 's/^hardcode_libdir_flag_spec.*$'/'hardcode_libdir_flag_spec=" -D__LIBTOOL_RPATH_SED__ "/' 613 mv libtool-2 libtool 614 chmod 755 libtool 615 libtool="./libtool" 616 ]) 617fi 618]) 619 620dnl Add a -R to the RUNTIME_PATH. Only if rpath is enabled and it is 621dnl an absolute path. 622dnl $1: the pathname to add. 623AC_DEFUN([ACX_RUNTIME_PATH_ADD], [ 624 if test "x$enable_rpath" = xyes; then 625 if echo "$1" | grep "^/" >/dev/null; then 626 RUNTIME_PATH="$RUNTIME_PATH -R$1" 627 fi 628 fi 629]) 630 631dnl Common code for both ACX_WITH_SSL and ACX_WITH_SSL_OPTIONAL 632dnl Takes one argument; the withval checked in those 2 functions 633dnl sets up the environment for the given openssl path 634AC_DEFUN([ACX_SSL_CHECKS], [ 635 withval=$1 636 if test x_$withval != x_no; then 637 AC_MSG_CHECKING(for SSL) 638 if test x_$withval = x_ -o x_$withval = x_yes; then 639 withval="/usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr" 640 fi 641 for dir in $withval; do 642 ssldir="$dir" 643 if test -f "$dir/include/openssl/ssl.h"; then 644 found_ssl="yes" 645 AC_DEFINE_UNQUOTED([HAVE_SSL], [], [Define if you have the SSL libraries installed.]) 646 dnl assume /usr/include is already in the include-path. 647 if test "$ssldir" != "/usr"; then 648 CPPFLAGS="$CPPFLAGS -I$ssldir/include" 649 LIBSSL_CPPFLAGS="$LIBSSL_CPPFLAGS -I$ssldir/include" 650 fi 651 break; 652 fi 653 done 654 if test x_$found_ssl != x_yes; then 655 AC_MSG_ERROR(Cannot find the SSL libraries in $withval) 656 else 657 AC_MSG_RESULT(found in $ssldir) 658 HAVE_SSL=yes 659 dnl assume /usr is already in the lib and dynlib paths. 660 if test "$ssldir" != "/usr" -a "$ssldir" != ""; then 661 LDFLAGS="$LDFLAGS -L$ssldir/lib" 662 LIBSSL_LDFLAGS="$LIBSSL_LDFLAGS -L$ssldir/lib" 663 ACX_RUNTIME_PATH_ADD([$ssldir/lib]) 664 fi 665 666 AC_MSG_CHECKING([for HMAC_CTX_init in -lcrypto]) 667 LIBS="$LIBS -lcrypto" 668 LIBSSL_LIBS="$LIBSSL_LIBS -lcrypto" 669 AC_TRY_LINK(, [ 670 int HMAC_CTX_init(void); 671 (void)HMAC_CTX_init(); 672 ], [ 673 AC_MSG_RESULT(yes) 674 AC_DEFINE([HAVE_HMAC_CTX_INIT], 1, 675 [If you have HMAC_CTX_init]) 676 ], [ 677 AC_MSG_RESULT(no) 678 # check if -lwsock32 or -lgdi32 are needed. 679 BAKLIBS="$LIBS" 680 BAKSSLLIBS="$LIBSSL_LIBS" 681 LIBS="$LIBS -lgdi32" 682 LIBSSL_LIBS="$LIBSSL_LIBS -lgdi32" 683 AC_MSG_CHECKING([if -lcrypto needs -lgdi32]) 684 AC_TRY_LINK([], [ 685 int HMAC_CTX_init(void); 686 (void)HMAC_CTX_init(); 687 ],[ 688 AC_DEFINE([HAVE_HMAC_CTX_INIT], 1, 689 [If you have HMAC_CTX_init]) 690 AC_MSG_RESULT(yes) 691 ],[ 692 AC_MSG_RESULT(no) 693 LIBS="$BAKLIBS" 694 LIBSSL_LIBS="$BAKSSLLIBS" 695 LIBS="$LIBS -ldl" 696 LIBSSL_LIBS="$LIBSSL_LIBS -ldl" 697 AC_MSG_CHECKING([if -lcrypto needs -ldl]) 698 AC_TRY_LINK([], [ 699 int HMAC_CTX_init(void); 700 (void)HMAC_CTX_init(); 701 ],[ 702 AC_DEFINE([HAVE_HMAC_CTX_INIT], 1, 703 [If you have HMAC_CTX_init]) 704 AC_MSG_RESULT(yes) 705 ],[ 706 AC_MSG_RESULT(no) 707 AC_MSG_ERROR([OpenSSL found in $ssldir, but version 0.9.7 or higher is required]) 708 ]) 709 ]) 710 ]) 711 fi 712 AC_SUBST(HAVE_SSL) 713 AC_SUBST(RUNTIME_PATH) 714 # openssl engine functionality needs dlopen(). 715 BAKLIBS="$LIBS" 716 AC_SEARCH_LIBS([dlopen], [dl]) 717 if test "$LIBS" != "$BAKLIBS"; then 718 LIBSSL_LIBS="$LIBSSL_LIBS -ldl" 719 fi 720 fi 721AC_CHECK_HEADERS([openssl/ssl.h],,, [AC_INCLUDES_DEFAULT]) 722AC_CHECK_HEADERS([openssl/err.h],,, [AC_INCLUDES_DEFAULT]) 723AC_CHECK_HEADERS([openssl/rand.h],,, [AC_INCLUDES_DEFAULT]) 724])dnl End of ACX_SSL_CHECKS 725 726dnl Check for SSL, where SSL is mandatory 727dnl Adds --with-ssl option, searches for openssl and defines HAVE_SSL if found 728dnl Setup of CPPFLAGS, CFLAGS. Adds -lcrypto to LIBS. 729dnl Checks main header files of SSL. 730dnl 731AC_DEFUN([ACX_WITH_SSL], 732[ 733AC_ARG_WITH(ssl, AC_HELP_STRING([--with-ssl=pathname], 734 [enable SSL (will check /usr/local/ssl 735 /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr)]),[ 736 ],[ 737 withval="yes" 738 ]) 739 if test x_$withval = x_no; then 740 AC_MSG_ERROR([Need SSL library to do digital signature cryptography]) 741 fi 742 ACX_SSL_CHECKS($withval) 743])dnl End of ACX_WITH_SSL 744 745dnl Check for SSL, where ssl is optional (--without-ssl is allowed) 746dnl Adds --with-ssl option, searches for openssl and defines HAVE_SSL if found 747dnl Setup of CPPFLAGS, CFLAGS. Adds -lcrypto to LIBS. 748dnl Checks main header files of SSL. 749dnl 750AC_DEFUN([ACX_WITH_SSL_OPTIONAL], 751[ 752AC_ARG_WITH(ssl, AC_HELP_STRING([--with-ssl=pathname], 753 [enable SSL (will check /usr/local/ssl 754 /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr)]),[ 755 ],[ 756 withval="yes" 757 ]) 758 ACX_SSL_CHECKS($withval) 759])dnl End of ACX_WITH_SSL_OPTIONAL 760 761dnl Setup to use -lssl 762dnl To use -lcrypto, use the ACX_WITH_SSL setup (before this one). 763AC_DEFUN([ACX_LIB_SSL], 764[ 765# check if libssl needs libdl 766BAKLIBS="$LIBS" 767LIBS="-lssl $LIBS" 768AC_MSG_CHECKING([if libssl needs libdl]) 769AC_TRY_LINK_FUNC([SSL_CTX_new], [ 770 AC_MSG_RESULT([no]) 771 LIBS="$BAKLIBS" 772] , [ 773 AC_MSG_RESULT([yes]) 774 LIBS="$BAKLIBS" 775 AC_SEARCH_LIBS([dlopen], [dl]) 776]) ])dnl End of ACX_LIB_SSL 777 778dnl Setup to use very large files (>2Gb). 779dnl setups fseeko and its own 780AC_DEFUN([ACX_SYS_LARGEFILE], 781[ 782AC_SYS_LARGEFILE 783dnl try to see if an additional _LARGEFILE_SOURCE 1 is needed to get fseeko 784ACX_CHECK_COMPILER_FLAG_NEEDED(-D_LARGEFILE_SOURCE=1, 785[ 786#include <stdio.h> 787int test() { 788 int a = fseeko(stdin, 0, 0); 789 return a; 790} 791], [CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE=1"]) 792]) 793 794dnl Check getaddrinfo. 795dnl Works on linux, solaris, bsd and windows(links winsock). 796dnl defines HAVE_GETADDRINFO, USE_WINSOCK. 797AC_DEFUN([ACX_CHECK_GETADDRINFO_WITH_INCLUDES], 798[AC_REQUIRE([AC_PROG_CC]) 799AC_MSG_CHECKING(for getaddrinfo) 800ac_cv_func_getaddrinfo=no 801AC_LINK_IFELSE( 802[AC_LANG_SOURCE([[ 803#ifdef __cplusplus 804extern "C" 805{ 806#endif 807char* getaddrinfo(); 808char* (*f) () = getaddrinfo; 809#ifdef __cplusplus 810} 811#endif 812int main() { 813 ; 814 return 0; 815} 816]])], 817dnl this case on linux, solaris, bsd 818[ac_cv_func_getaddrinfo="yes" 819dnl see if on windows 820if test "$ac_cv_header_windows_h" = "yes"; then 821 AC_DEFINE(USE_WINSOCK, 1, [Whether the windows socket API is used]) 822 USE_WINSOCK="1" 823 LIBS="$LIBS -lws2_32" 824fi 825], 826dnl no quick getaddrinfo, try mingw32 and winsock2 library. 827ORIGLIBS="$LIBS" 828LIBS="$LIBS -lws2_32" 829AC_LINK_IFELSE( 830[AC_LANG_PROGRAM( 831[ 832#ifdef HAVE_WS2TCPIP_H 833#include <ws2tcpip.h> 834#endif 835], 836[ 837 (void)getaddrinfo(NULL, NULL, NULL, NULL); 838] 839)], 840[ 841ac_cv_func_getaddrinfo="yes" 842dnl already: LIBS="$LIBS -lws2_32" 843AC_DEFINE(USE_WINSOCK, 1, [Whether the windows socket API is used]) 844USE_WINSOCK="1" 845], 846[ 847ac_cv_func_getaddrinfo="no" 848LIBS="$ORIGLIBS" 849]) 850) 851 852AC_MSG_RESULT($ac_cv_func_getaddrinfo) 853if test $ac_cv_func_getaddrinfo = yes; then 854 AC_DEFINE(HAVE_GETADDRINFO, 1, [Whether getaddrinfo is available]) 855fi 856])dnl Endof AC_CHECK_GETADDRINFO_WITH_INCLUDES 857 858dnl check if a function is deprecated. defines DEPRECATED_func in config.h. 859dnl $1: function name 860dnl $2: C-statement that calls the function. 861dnl $3: includes for the program. 862dnl $4: executes if yes 863dnl $5: executes if no 864AC_DEFUN([ACX_FUNC_DEPRECATED], 865[ 866AC_REQUIRE([AC_PROG_CC]) 867AC_MSG_CHECKING(if $1 is deprecated) 868cache=`echo $1 | sed 'y%.=/+-%___p_%'` 869AC_CACHE_VAL(cv_cc_deprecated_$cache, 870[ 871echo '$3' >conftest.c 872echo 'void f(){ $2 }' >>conftest.c 873if test -z "`$CC -c conftest.c 2>&1 | grep deprecated`"; then 874eval "cv_cc_deprecated_$cache=no" 875else 876eval "cv_cc_deprecated_$cache=yes" 877fi 878rm -f conftest conftest.o conftest.c 879]) 880if eval "test \"`echo '$cv_cc_deprecated_'$cache`\" = yes"; then 881AC_MSG_RESULT(yes) 882AC_DEFINE_UNQUOTED(AS_TR_CPP([DEPRECATED_$1]), 1, [Whether $1 is deprecated]) 883: 884$4 885else 886AC_MSG_RESULT(no) 887: 888$5 889fi 890])dnl end of ACX_FUNC_DEPRECATED 891 892dnl check if select and nonblocking sockets actually work. 893dnl Needs fork(2) and select(2). 894dnl defines NONBLOCKING_IS_BROKEN, and if that is true multiple reads from 895dnl a nonblocking socket do not work, a new call to select is necessary. 896AC_DEFUN([ACX_CHECK_NONBLOCKING_BROKEN], 897[ 898AC_MSG_CHECKING([if nonblocking sockets work]) 899if echo $target | grep mingw32 >/dev/null; then 900 AC_MSG_RESULT([no (windows)]) 901 AC_DEFINE([NONBLOCKING_IS_BROKEN], 1, [Define if the network stack does not fully support nonblocking io (causes lower performance).]) 902else 903AC_RUN_IFELSE([ 904AC_LANG_SOURCE([[ 905#include <stdio.h> 906#include <string.h> 907#include <stdlib.h> 908#include <fcntl.h> 909#include <errno.h> 910#ifdef HAVE_SYS_TYPES_H 911#include <sys/types.h> 912#endif 913#ifdef HAVE_SYS_SOCKET_H 914#include <sys/socket.h> 915#endif 916#ifdef HAVE_NETINET_IN_H 917#include <netinet/in.h> 918#endif 919#ifdef HAVE_ARPA_INET_H 920#include <arpa/inet.h> 921#endif 922#ifdef HAVE_UNISTD_H 923#include <unistd.h> 924#endif 925#ifdef HAVE_TIME_H 926#include <time.h> 927#endif 928 929int main(void) 930{ 931 int port; 932 int sfd, cfd; 933 int num = 10; 934 int i, p; 935 struct sockaddr_in a; 936 /* test if select and nonblocking reads work well together */ 937 /* open port. 938 fork child to send 10 messages. 939 select to read. 940 then try to nonblocking read the 10 messages 941 then, nonblocking read must give EAGAIN 942 */ 943 944 port = 12345 + (time(0)%32); 945 sfd = socket(PF_INET, SOCK_DGRAM, 0); 946 if(sfd == -1) { 947 perror("socket"); 948 return 1; 949 } 950 memset(&a, 0, sizeof(a)); 951 a.sin_family = AF_INET; 952 a.sin_port = htons(port); 953 a.sin_addr.s_addr = inet_addr("127.0.0.1"); 954 if(bind(sfd, (struct sockaddr*)&a, sizeof(a)) < 0) { 955 perror("bind"); 956 return 1; 957 } 958 if(fcntl(sfd, F_SETFL, O_NONBLOCK) == -1) { 959 perror("fcntl"); 960 return 1; 961 } 962 963 cfd = socket(PF_INET, SOCK_DGRAM, 0); 964 if(cfd == -1) { 965 perror("client socket"); 966 return 1; 967 } 968 a.sin_port = 0; 969 if(bind(cfd, (struct sockaddr*)&a, sizeof(a)) < 0) { 970 perror("client bind"); 971 return 1; 972 } 973 a.sin_port = htons(port); 974 975 /* no handler, causes exit in 10 seconds */ 976 alarm(10); 977 978 /* send and receive on the socket */ 979 if((p=fork()) == 0) { 980 for(i=0; i<num; i++) { 981 if(sendto(cfd, &i, sizeof(i), 0, 982 (struct sockaddr*)&a, sizeof(a)) < 0) { 983 perror("sendto"); 984 return 1; 985 } 986 } 987 } else { 988 /* parent */ 989 fd_set rset; 990 int x; 991 if(p == -1) { 992 perror("fork"); 993 return 1; 994 } 995 FD_ZERO(&rset); 996 FD_SET(sfd, &rset); 997 if(select(sfd+1, &rset, NULL, NULL, NULL) < 1) { 998 perror("select"); 999 return 1; 1000 } 1001 i = 0; 1002 while(i < num) { 1003 if(recv(sfd, &x, sizeof(x), 0) != sizeof(x)) { 1004 if(errno == EAGAIN) 1005 continue; 1006 perror("recv"); 1007 return 1; 1008 } 1009 i++; 1010 } 1011 /* now we want to get EAGAIN: nonblocking goodness */ 1012 errno = 0; 1013 recv(sfd, &x, sizeof(x), 0); 1014 if(errno != EAGAIN) { 1015 perror("trying to recv again"); 1016 return 1; 1017 } 1018 /* EAGAIN encountered */ 1019 } 1020 1021 close(sfd); 1022 close(cfd); 1023 return 0; 1024} 1025]])], [ 1026 AC_MSG_RESULT([yes]) 1027], [ 1028 AC_MSG_RESULT([no]) 1029 AC_DEFINE([NONBLOCKING_IS_BROKEN], 1, [Define if the network stack does not fully support nonblocking io (causes lower performance).]) 1030], [ 1031 AC_MSG_RESULT([crosscompile(yes)]) 1032]) 1033fi 1034])dnl End of ACX_CHECK_NONBLOCKING_BROKEN 1035 1036dnl Check if mkdir has one or two arguments. 1037dnl defines MKDIR_HAS_ONE_ARG 1038AC_DEFUN([ACX_MKDIR_ONE_ARG], 1039[ 1040AC_MSG_CHECKING([whether mkdir has one arg]) 1041AC_TRY_COMPILE([ 1042#include <stdio.h> 1043#include <unistd.h> 1044#ifdef HAVE_WINSOCK2_H 1045#include <winsock2.h> 1046#endif 1047#ifdef HAVE_SYS_STAT_H 1048#include <sys/stat.h> 1049#endif 1050], [ 1051 (void)mkdir("directory"); 1052], 1053AC_MSG_RESULT(yes) 1054AC_DEFINE(MKDIR_HAS_ONE_ARG, 1, [Define if mkdir has one argument.]) 1055, 1056AC_MSG_RESULT(no) 1057) 1058])dnl end of ACX_MKDIR_ONE_ARG 1059 1060dnl Check for ioctlsocket function. works on mingw32 too. 1061AC_DEFUN([ACX_FUNC_IOCTLSOCKET], 1062[ 1063# check ioctlsocket 1064AC_MSG_CHECKING(for ioctlsocket) 1065AC_LINK_IFELSE([AC_LANG_PROGRAM([ 1066#ifdef HAVE_WINSOCK2_H 1067#include <winsock2.h> 1068#endif 1069], [ 1070 (void)ioctlsocket(0, 0, NULL); 1071])], [ 1072AC_MSG_RESULT(yes) 1073AC_DEFINE(HAVE_IOCTLSOCKET, 1, [if the function 'ioctlsocket' is available]) 1074],[AC_MSG_RESULT(no)]) 1075])dnl end of ACX_FUNC_IOCTLSOCKET 1076 1077dnl detect malloc and provide malloc compat prototype. 1078dnl $1: unique name for compat code 1079AC_DEFUN([ACX_FUNC_MALLOC], 1080[ 1081 AC_MSG_CHECKING([for GNU libc compatible malloc]) 1082 AC_RUN_IFELSE([AC_LANG_PROGRAM( 1083[[#if defined STDC_HEADERS || defined HAVE_STDLIB_H 1084#include <stdlib.h> 1085#else 1086char *malloc (); 1087#endif 1088]], [ if(malloc(0) != 0) return 1;]) 1089], 1090 [AC_MSG_RESULT([no]) 1091 AC_LIBOBJ(malloc) 1092 AC_DEFINE_UNQUOTED([malloc], [rpl_malloc_$1], [Define if replacement function should be used.])] , 1093 [AC_MSG_RESULT([yes]) 1094 AC_DEFINE([HAVE_MALLOC], 1, [If have GNU libc compatible malloc])], 1095 [AC_MSG_RESULT([no (crosscompile)]) 1096 AC_LIBOBJ(malloc) 1097 AC_DEFINE_UNQUOTED([malloc], [rpl_malloc_$1], [Define if replacement function should be used.])] ) 1098]) 1099 1100dnl Define fallback for fseeko and ftello if needed. 1101AC_DEFUN([AHX_CONFIG_FSEEKO], 1102[ 1103#ifndef HAVE_FSEEKO 1104#define fseeko fseek 1105#define ftello ftell 1106#endif /* HAVE_FSEEKO */ 1107]) 1108 1109dnl Define RAND_MAX if not defined 1110AC_DEFUN([AHX_CONFIG_RAND_MAX], 1111[ 1112#ifndef RAND_MAX 1113#define RAND_MAX 2147483647 1114#endif 1115]) 1116 1117dnl Define MAXHOSTNAMELEN if not defined 1118AC_DEFUN([AHX_CONFIG_MAXHOSTNAMELEN], 1119[ 1120#ifndef MAXHOSTNAMELEN 1121#define MAXHOSTNAMELEN 256 1122#endif 1123]) 1124 1125dnl Define IPV6_MIN_MTU if not defined 1126AC_DEFUN([AHX_CONFIG_IPV6_MIN_MTU], 1127[ 1128#ifndef IPV6_MIN_MTU 1129#define IPV6_MIN_MTU 1280 1130#endif /* IPV6_MIN_MTU */ 1131]) 1132 1133dnl provide snprintf, vsnprintf compat prototype 1134dnl $1: unique name for compat code 1135AC_DEFUN([AHX_CONFIG_SNPRINTF], 1136[ 1137#ifndef HAVE_SNPRINTF 1138#define snprintf snprintf_$1 1139#define vsnprintf vsnprintf_$1 1140#include <stdarg.h> 1141int snprintf (char *str, size_t count, const char *fmt, ...); 1142int vsnprintf (char *str, size_t count, const char *fmt, va_list arg); 1143#endif /* HAVE_SNPRINTF */ 1144]) 1145 1146dnl provide inet_pton compat prototype. 1147dnl $1: unique name for compat code 1148AC_DEFUN([AHX_CONFIG_INET_PTON], 1149[ 1150#ifndef HAVE_INET_PTON 1151#define inet_pton inet_pton_$1 1152int inet_pton(int af, const char* src, void* dst); 1153#endif /* HAVE_INET_PTON */ 1154]) 1155 1156dnl provide inet_ntop compat prototype. 1157dnl $1: unique name for compat code 1158AC_DEFUN([AHX_CONFIG_INET_NTOP], 1159[ 1160#ifndef HAVE_INET_NTOP 1161#define inet_ntop inet_ntop_$1 1162const char *inet_ntop(int af, const void *src, char *dst, size_t size); 1163#endif 1164]) 1165 1166dnl provide inet_aton compat prototype. 1167dnl $1: unique name for compat code 1168AC_DEFUN([AHX_CONFIG_INET_ATON], 1169[ 1170#ifndef HAVE_INET_ATON 1171#define inet_aton inet_aton_$1 1172int inet_aton(const char *cp, struct in_addr *addr); 1173#endif 1174]) 1175 1176dnl provide memmove compat prototype. 1177dnl $1: unique name for compat code 1178AC_DEFUN([AHX_CONFIG_MEMMOVE], 1179[ 1180#ifndef HAVE_MEMMOVE 1181#define memmove memmove_$1 1182void *memmove(void *dest, const void *src, size_t n); 1183#endif 1184]) 1185 1186dnl provide strlcat compat prototype. 1187dnl $1: unique name for compat code 1188AC_DEFUN([AHX_CONFIG_STRLCAT], 1189[ 1190#ifndef HAVE_STRLCAT 1191#define strlcat strlcat_$1 1192size_t strlcat(char *dst, const char *src, size_t siz); 1193#endif 1194]) 1195 1196dnl provide strlcpy compat prototype. 1197dnl $1: unique name for compat code 1198AC_DEFUN([AHX_CONFIG_STRLCPY], 1199[ 1200#ifndef HAVE_STRLCPY 1201#define strlcpy strlcpy_$1 1202size_t strlcpy(char *dst, const char *src, size_t siz); 1203#endif 1204]) 1205 1206dnl provide gmtime_r compat prototype. 1207dnl $1: unique name for compat code 1208AC_DEFUN([AHX_CONFIG_GMTIME_R], 1209[ 1210#ifndef HAVE_GMTIME_R 1211#define gmtime_r gmtime_r_$1 1212struct tm *gmtime_r(const time_t *timep, struct tm *result); 1213#endif 1214]) 1215 1216dnl provide w32 compat definition for sleep 1217AC_DEFUN([AHX_CONFIG_W32_SLEEP], 1218[ 1219#if !defined(HAVE_SLEEP) || defined(HAVE_WINDOWS_H) 1220#define sleep(x) Sleep((x)*1000) /* on win32 */ 1221#endif /* HAVE_SLEEP */ 1222]) 1223 1224dnl provide w32 compat definition for usleep 1225AC_DEFUN([AHX_CONFIG_W32_USLEEP], 1226[ 1227#ifndef HAVE_USLEEP 1228#define usleep(x) Sleep((x)/1000 + 1) /* on win32 */ 1229#endif /* HAVE_USLEEP */ 1230]) 1231 1232dnl provide w32 compat definition for random 1233AC_DEFUN([AHX_CONFIG_W32_RANDOM], 1234[ 1235#ifndef HAVE_RANDOM 1236#define random rand /* on win32, for tests only (bad random) */ 1237#endif /* HAVE_RANDOM */ 1238]) 1239 1240dnl provide w32 compat definition for srandom 1241AC_DEFUN([AHX_CONFIG_W32_SRANDOM], 1242[ 1243#ifndef HAVE_SRANDOM 1244#define srandom(x) srand(x) /* on win32, for tests only (bad random) */ 1245#endif /* HAVE_SRANDOM */ 1246]) 1247 1248dnl provide w32 compat definition for FD_SET_T 1249AC_DEFUN([AHX_CONFIG_W32_FD_SET_T], 1250[ 1251/* detect if we need to cast to unsigned int for FD_SET to avoid warnings */ 1252#ifdef HAVE_WINSOCK2_H 1253#define FD_SET_T (u_int) 1254#else 1255#define FD_SET_T 1256#endif 1257]) 1258 1259dnl Remove an extension flag from CFLAGS, define replacement to be made. 1260dnl Used by ACX_STRIP_EXT_FLAGS. 1261dnl $1: the name of the flag, for example -D_GNU_SOURCE. 1262AC_DEFUN([ACX_CFLAGS_STRIP], 1263[ 1264 if echo $CFLAGS | grep " $1" >/dev/null 2>&1; then 1265 CFLAGS="`echo $CFLAGS | sed -e 's/ $1//g'`" 1266 AC_DEFINE(m4_bpatsubst(OMITTED_$1,[[-=]],_), 1, Put $1 define in config.h) 1267 fi 1268]) 1269 1270dnl Remove EXT flags from the CFLAGS and set them to be defined in config.h 1271dnl use with ACX_DETERMINE_EXT_FLAGS. 1272AC_DEFUN([ACX_STRIP_EXT_FLAGS], 1273[ 1274 AC_MSG_NOTICE([Stripping extension flags...]) 1275 ACX_CFLAGS_STRIP(-D_GNU_SOURCE) 1276 ACX_CFLAGS_STRIP(-D_BSD_SOURCE) 1277 ACX_CFLAGS_STRIP(-D__EXTENSIONS__) 1278 ACX_CFLAGS_STRIP(-D_POSIX_C_SOURCE=200112) 1279 ACX_CFLAGS_STRIP(-D_XOPEN_SOURCE=600) 1280 ACX_CFLAGS_STRIP(-D_XOPEN_SOURCE_EXTENDED=1) 1281 ACX_CFLAGS_STRIP(-D_ALL_SOURCE) 1282 ACX_CFLAGS_STRIP(-D_LARGEFILE_SOURCE=1) 1283]) dnl End of ACX_STRIP_EXT_FLAGS 1284 1285dnl define one omitted flag for config.h 1286dnl $1: flag name. -D_GNU_SOURCE 1287dnl $2: replacement define. _GNU_SOURCE 1288dnl $3: define value, 1 1289AC_DEFUN([AHX_CONFIG_FLAG_OMITTED], 1290[#if defined($1) && !defined($2) 1291#define $2 $3 1292[#]endif ]) 1293 1294dnl Wrapper for AHX_CONFIG_FLAG_OMITTED for -D style flags 1295dnl $1: the -DNAME or -DNAME=value string. 1296AC_DEFUN([AHX_CONFIG_FLAG_EXT], 1297[AHX_CONFIG_FLAG_OMITTED(m4_bpatsubst(OMITTED_$1,[[-=]],_),m4_bpatsubst(m4_bpatsubst($1,-D,),=.*$,),m4_if(m4_bregexp($1,=),-1,1,m4_bpatsubst($1,^.*=,))) 1298]) 1299 1300dnl config.h part to define omitted cflags, use with ACX_STRIP_EXT_FLAGS. 1301AC_DEFUN([AHX_CONFIG_EXT_FLAGS], 1302[AHX_CONFIG_FLAG_EXT(-D_GNU_SOURCE) 1303AHX_CONFIG_FLAG_EXT(-D_BSD_SOURCE) 1304AHX_CONFIG_FLAG_EXT(-D__EXTENSIONS__) 1305AHX_CONFIG_FLAG_EXT(-D_POSIX_C_SOURCE=200112) 1306AHX_CONFIG_FLAG_EXT(-D_XOPEN_SOURCE=600) 1307AHX_CONFIG_FLAG_EXT(-D_XOPEN_SOURCE_EXTENDED=1) 1308AHX_CONFIG_FLAG_EXT(-D_ALL_SOURCE) 1309AHX_CONFIG_FLAG_EXT(-D_LARGEFILE_SOURCE=1) 1310]) 1311 1312dnl check if memcmp is using signed characters and replace if so. 1313AC_DEFUN([ACX_CHECK_MEMCMP_SIGNED], 1314[AC_MSG_CHECKING([if memcmp compares unsigned]) 1315AC_RUN_IFELSE([AC_LANG_SOURCE([[ 1316#include <stdio.h> 1317#include <stdlib.h> 1318#include <string.h> 1319int main(void) 1320{ 1321 char a = 255, b = 0; 1322 if(memcmp(&a, &b, 1) < 0) 1323 return 1; 1324 return 0; 1325} 1326]])], [AC_MSG_RESULT([yes]) ], 1327[ AC_MSG_RESULT([no]) 1328 AC_DEFINE([MEMCMP_IS_BROKEN], [1], [Define if memcmp() does not compare unsigned bytes]) 1329 AC_LIBOBJ([memcmp]) 1330], [ AC_MSG_RESULT([cross-compile no]) 1331 AC_DEFINE([MEMCMP_IS_BROKEN], [1], [Define if memcmp() does not compare unsigned bytes]) 1332 AC_LIBOBJ([memcmp]) 1333]) ]) 1334 1335dnl define memcmp to its replacement, pass unique id for program as arg 1336AC_DEFUN([AHX_MEMCMP_BROKEN], [ 1337#ifdef MEMCMP_IS_BROKEN 1338#include "compat/memcmp.h" 1339#define memcmp memcmp_$1 1340int memcmp(const void *x, const void *y, size_t n); 1341#endif 1342]) 1343 1344dnl ACX_CHECK_SS_FAMILY - check for sockaddr_storage.ss_family 1345AC_DEFUN([ACX_CHECK_SS_FAMILY], 1346[AC_CHECK_MEMBER([struct sockaddr_storage.ss_family], [], [ 1347 AC_CHECK_MEMBER([struct sockaddr_storage.__ss_family], [ 1348 AC_DEFINE([ss_family], [__ss_family], [Fallback member name for socket family in struct sockaddr_storage]) 1349 ],, [AC_INCLUDES_DEFAULT 1350#ifdef HAVE_NETINET_IN_H 1351#include <netinet/in.h> 1352#endif 1353#ifdef HAVE_SYS_SOCKET_H 1354#include <sys/socket.h> 1355#endif 1356#ifdef HAVE_NETDB_H 1357#include <netdb.h> 1358#endif 1359#ifdef HAVE_ARPA_INET_H 1360#include <arpa/inet.h> 1361#endif 1362 ]) 1363], [AC_INCLUDES_DEFAULT 1364#ifdef HAVE_NETINET_IN_H 1365#include <netinet/in.h> 1366#endif 1367#ifdef HAVE_SYS_SOCKET_H 1368#include <sys/socket.h> 1369#endif 1370#ifdef HAVE_NETDB_H 1371#include <netdb.h> 1372#endif 1373#ifdef HAVE_ARPA_INET_H 1374#include <arpa/inet.h> 1375#endif 1376]) ]) 1377 1378dnl End of file 1379