1dnl Process this file with autoconf to produce a configure script. 2 3dnl NOTE FOR MAINTAINERS: Do not use minor version numbers 08 or 09 because 4dnl the leading zeros may cause them to be treated as invalid octal constants 5dnl if a PCRE user writes code that uses PCRE_MINOR as a number. There is now 6dnl a check further down that throws an error if 08 or 09 are used. 7 8dnl The PCRE_PRERELEASE feature is for identifying release candidates. It might 9dnl be defined as -RC2, for example. For real releases, it should be empty. 10 11m4_define(pcre_major, [8]) 12m4_define(pcre_minor, [31]) 13m4_define(pcre_prerelease, []) 14m4_define(pcre_date, [2012-07-06]) 15 16# NOTE: The CMakeLists.txt file searches for the above variables in the first 17# 50 lines of this file. Please update that if the variables above are moved. 18 19# Libtool shared library interface versions (current:revision:age) 20m4_define(libpcre_version, [1:1:0]) 21m4_define(libpcre16_version, [0:1:0]) 22m4_define(libpcreposix_version, [0:1:0]) 23m4_define(libpcrecpp_version, [0:0:0]) 24 25AC_PREREQ(2.57) 26AC_INIT(PCRE, pcre_major.pcre_minor[]pcre_prerelease, , pcre) 27AC_CONFIG_SRCDIR([pcre.h.in]) 28AM_INIT_AUTOMAKE([dist-bzip2 dist-zip]) 29m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])]) 30AC_CONFIG_HEADERS(config.h) 31 32# This was added at the suggestion of libtoolize (03-Jan-10) 33AC_CONFIG_MACRO_DIR([m4]) 34 35# The default CFLAGS and CXXFLAGS in Autoconf are "-g -O2" for gcc and just 36# "-g" for any other compiler. There doesn't seem to be a standard way of 37# getting rid of the -g (which I don't think is needed for a production 38# library). This fudge seems to achieve the necessary. First, we remember the 39# externally set values of CFLAGS and CXXFLAGS. Then call the AC_PROG_CC and 40# AC_PROG_CXX macros to find the compilers - if CFLAGS and CXXFLAGS are not 41# set, they will be set to Autoconf's defaults. Afterwards, if the original 42# values were not set, remove the -g from the Autoconf defaults. 43# (PH 02-May-07) 44 45remember_set_CFLAGS="$CFLAGS" 46remember_set_CXXFLAGS="$CXXFLAGS" 47 48AC_PROG_CC 49AC_PROG_CXX 50 51if test "x$remember_set_CFLAGS" = "x" 52then 53 if test "$CFLAGS" = "-g -O2" 54 then 55 CFLAGS="-O2" 56 elif test "$CFLAGS" = "-g" 57 then 58 CFLAGS="" 59 fi 60fi 61 62if test "x$remember_set_CXXFLAGS" = "x" 63then 64 if test "$CXXFLAGS" = "-g -O2" 65 then 66 CXXFLAGS="-O2" 67 elif test "$CXXFLAGS" = "-g" 68 then 69 CXXFLAGS="" 70 fi 71fi 72 73# AC_PROG_CXX will return "g++" even if no c++ compiler is installed. 74# Check for that case, and just disable c++ code if g++ doesn't run. 75AC_LANG_PUSH(C++) 76AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],, CXX=""; CXXCP=""; CXXFLAGS="") 77AC_LANG_POP 78 79# Check for a 64-bit integer type 80AC_TYPE_INT64_T 81 82AC_PROG_INSTALL 83AC_LIBTOOL_WIN32_DLL 84LT_INIT 85AC_PROG_LN_S 86 87PCRE_MAJOR="pcre_major" 88PCRE_MINOR="pcre_minor" 89PCRE_PRERELEASE="pcre_prerelease" 90PCRE_DATE="pcre_date" 91 92if test "$PCRE_MINOR" = "08" -o "$PCRE_MINOR" = "09" 93then 94 echo "***" 95 echo "*** Minor version number $PCRE_MINOR must not be used. ***" 96 echo "*** Use only 01 to 07 or 10 onwards, to avoid octal issues. ***" 97 echo "***" 98 exit 1 99fi 100 101AC_SUBST(PCRE_MAJOR) 102AC_SUBST(PCRE_MINOR) 103AC_SUBST(PCRE_PRERELEASE) 104AC_SUBST(PCRE_DATE) 105 106# Set a more sensible default value for $(htmldir). 107if test "x$htmldir" = 'x${docdir}' 108then 109 htmldir='${docdir}/html' 110fi 111 112# Handle --disable-pcre8 (enabled by default) 113AC_ARG_ENABLE(pcre8, 114 AS_HELP_STRING([--disable-pcre8], 115 [disable 8 bit character support]), 116 , enable_pcre8=unset) 117AC_SUBST(enable_pcre8) 118 119# Handle --enable-pcre16 (disabled by default) 120AC_ARG_ENABLE(pcre16, 121 AS_HELP_STRING([--enable-pcre16], 122 [enable 16 bit character support]), 123 , enable_pcre16=unset) 124AC_SUBST(enable_pcre16) 125 126# Handle --disable-cpp. The substitution of enable_cpp is needed for use in 127# pcre-config. 128AC_ARG_ENABLE(cpp, 129 AS_HELP_STRING([--disable-cpp], 130 [disable C++ support]), 131 , enable_cpp=unset) 132AC_SUBST(enable_cpp) 133 134# Handle --enable-jit (disabled by default) 135AC_ARG_ENABLE(jit, 136 AS_HELP_STRING([--enable-jit], 137 [enable Just-In-Time compiling support]), 138 , enable_jit=no) 139 140# Handle --disable-pcregrep-jit (enabled by default) 141AC_ARG_ENABLE(pcregrep-jit, 142 AS_HELP_STRING([--disable-pcregrep-jit], 143 [disable JIT support in pcregrep]), 144 , enable_pcregrep_jit=yes) 145 146# Handle --enable-rebuild-chartables 147AC_ARG_ENABLE(rebuild-chartables, 148 AS_HELP_STRING([--enable-rebuild-chartables], 149 [rebuild character tables in current locale]), 150 , enable_rebuild_chartables=no) 151 152# Handle --enable-utf8 (disabled by default) 153AC_ARG_ENABLE(utf8, 154 AS_HELP_STRING([--enable-utf8], 155 [another name for --enable-utf. Kept only for compatibility reasons]), 156 , enable_utf8=unset) 157 158# Handle --enable-utf (disabled by default) 159AC_ARG_ENABLE(utf, 160 AS_HELP_STRING([--enable-utf], 161 [enable UTF-8/16 support (incompatible with --enable-ebcdic)]), 162 , enable_utf=unset) 163 164# Handle --enable-unicode-properties 165AC_ARG_ENABLE(unicode-properties, 166 AS_HELP_STRING([--enable-unicode-properties], 167 [enable Unicode properties support (implies --enable-utf)]), 168 , enable_unicode_properties=no) 169 170# Handle --enable-newline=NL 171dnl AC_ARG_ENABLE(newline, 172dnl AS_HELP_STRING([--enable-newline=NL], 173dnl [use NL as newline (lf, cr, crlf, anycrlf, any; default=lf)]), 174dnl , enable_newline=lf) 175 176# Separate newline options 177ac_pcre_newline=lf 178AC_ARG_ENABLE(newline-is-cr, 179 AS_HELP_STRING([--enable-newline-is-cr], 180 [use CR as newline character]), 181 ac_pcre_newline=cr) 182AC_ARG_ENABLE(newline-is-lf, 183 AS_HELP_STRING([--enable-newline-is-lf], 184 [use LF as newline character (default)]), 185 ac_pcre_newline=lf) 186AC_ARG_ENABLE(newline-is-crlf, 187 AS_HELP_STRING([--enable-newline-is-crlf], 188 [use CRLF as newline sequence]), 189 ac_pcre_newline=crlf) 190AC_ARG_ENABLE(newline-is-anycrlf, 191 AS_HELP_STRING([--enable-newline-is-anycrlf], 192 [use CR, LF, or CRLF as newline sequence]), 193 ac_pcre_newline=anycrlf) 194AC_ARG_ENABLE(newline-is-any, 195 AS_HELP_STRING([--enable-newline-is-any], 196 [use any valid Unicode newline sequence]), 197 ac_pcre_newline=any) 198enable_newline="$ac_pcre_newline" 199 200# Handle --enable-bsr-anycrlf 201AC_ARG_ENABLE(bsr-anycrlf, 202 AS_HELP_STRING([--enable-bsr-anycrlf], 203 [\R matches only CR, LF, CRLF by default]), 204 , enable_bsr_anycrlf=no) 205 206# Handle --enable-ebcdic 207AC_ARG_ENABLE(ebcdic, 208 AS_HELP_STRING([--enable-ebcdic], 209 [assume EBCDIC coding rather than ASCII; incompatible with --enable-utf; use only in (uncommon) EBCDIC environments; it implies --enable-rebuild-chartables]), 210 , enable_ebcdic=no) 211 212# Handle --disable-stack-for-recursion 213AC_ARG_ENABLE(stack-for-recursion, 214 AS_HELP_STRING([--disable-stack-for-recursion], 215 [don't use stack recursion when matching]), 216 , enable_stack_for_recursion=yes) 217 218# Handle --enable-pcregrep-libz 219AC_ARG_ENABLE(pcregrep-libz, 220 AS_HELP_STRING([--enable-pcregrep-libz], 221 [link pcregrep with libz to handle .gz files]), 222 , enable_pcregrep_libz=no) 223 224# Handle --enable-pcregrep-libbz2 225AC_ARG_ENABLE(pcregrep-libbz2, 226 AS_HELP_STRING([--enable-pcregrep-libbz2], 227 [link pcregrep with libbz2 to handle .bz2 files]), 228 , enable_pcregrep_libbz2=no) 229 230# Handle --with-pcregrep-bufsize=N 231AC_ARG_WITH(pcregrep-bufsize, 232 AS_HELP_STRING([--with-pcregrep-bufsize=N], 233 [pcregrep buffer size (default=20480)]), 234 , with_pcregrep_bufsize=20480) 235 236# Handle --enable-pcretest-libedit 237AC_ARG_ENABLE(pcretest-libedit, 238 AS_HELP_STRING([--enable-pcretest-libedit], 239 [link pcretest with libedit]), 240 , enable_pcretest_libedit=no) 241 242# Handle --enable-pcretest-libreadline 243AC_ARG_ENABLE(pcretest-libreadline, 244 AS_HELP_STRING([--enable-pcretest-libreadline], 245 [link pcretest with libreadline]), 246 , enable_pcretest_libreadline=no) 247 248# Handle --with-posix-malloc-threshold=NBYTES 249AC_ARG_WITH(posix-malloc-threshold, 250 AS_HELP_STRING([--with-posix-malloc-threshold=NBYTES], 251 [threshold for POSIX malloc usage (default=10)]), 252 , with_posix_malloc_threshold=10) 253 254# Handle --with-link-size=N 255AC_ARG_WITH(link-size, 256 AS_HELP_STRING([--with-link-size=N], 257 [internal link size (2, 3, or 4 allowed; default=2)]), 258 , with_link_size=2) 259 260# Handle --with-match-limit=N 261AC_ARG_WITH(match-limit, 262 AS_HELP_STRING([--with-match-limit=N], 263 [default limit on internal looping (default=10000000)]), 264 , with_match_limit=10000000) 265 266# Handle --with-match-limit_recursion=N 267# 268# Note: In config.h, the default is to define MATCH_LIMIT_RECURSION 269# symbolically as MATCH_LIMIT, which in turn is defined to be some numeric 270# value (e.g. 10000000). MATCH_LIMIT_RECURSION can otherwise be set to some 271# different numeric value (or even the same numeric value as MATCH_LIMIT, 272# though no longer defined in terms of the latter). 273# 274AC_ARG_WITH(match-limit-recursion, 275 AS_HELP_STRING([--with-match-limit-recursion=N], 276 [default limit on internal recursion (default=MATCH_LIMIT)]), 277 , with_match_limit_recursion=MATCH_LIMIT) 278 279# Copy enable_utf8 value to enable_utf for compatibility reasons 280if test "x$enable_utf8" != "xunset" 281then 282 if test "x$enable_utf" != "xunset" 283 then 284 AC_MSG_ERROR([--enable/disable-utf8 is kept only for compatibility reasons and its value is copied to --enable/disable-utf. Newer code must use --enable/disable-utf alone.]) 285 fi 286 enable_utf=$enable_utf8 287fi 288 289# Set the default value for pcre8 290if test "x$enable_pcre8" = "xunset" 291then 292 enable_pcre8=yes 293fi 294 295# Set the default value for pcre16 296if test "x$enable_pcre16" = "xunset" 297then 298 enable_pcre16=no 299fi 300 301# Make sure enable_pcre8 or enable_pcre16 was set 302if test "x$enable_pcre8$enable_pcre16" = "xnono" 303then 304 AC_MSG_ERROR([Either 8 or 16 bit (or both) pcre library must be enabled]) 305fi 306 307# Make sure that if enable_unicode_properties was set, that UTF support is enabled. 308if test "x$enable_unicode_properties" = "xyes" 309then 310 if test "x$enable_utf" = "xno" 311 then 312 AC_MSG_ERROR([support for Unicode properties requires UTF-8/16 support]) 313 fi 314 enable_utf=yes 315fi 316 317# enable_utf is disabled by default. 318if test "x$enable_utf" = "xunset" 319then 320 enable_utf=no 321fi 322 323# enable_cpp copies the value of enable_pcre8 by default 324if test "x$enable_cpp" = "xunset" 325then 326 enable_cpp=$enable_pcre8 327fi 328 329# Make sure that if enable_cpp was set, that enable_pcre8 support is enabled 330if test "x$enable_cpp" = "xyes" 331then 332 if test "x$enable_pcre8" = "xno" 333 then 334 AC_MSG_ERROR([C++ library requires pcre library with 8 bit characters]) 335 fi 336fi 337 338# Make sure that if enable_ebcdic is set, rebuild_chartables is also enabled. 339# Also check that UTF support is not requested, because PCRE cannot handle 340# EBCDIC and UTF in the same build. To do so it would need to use different 341# character constants depending on the mode. 342# 343if test "x$enable_ebcdic" = "xyes" 344then 345 enable_rebuild_chartables=yes 346 if test "x$enable_utf" = "xyes" 347 then 348 AC_MSG_ERROR([support for EBCDIC and UTF-8/16 cannot be enabled at the same time]) 349 fi 350fi 351 352# Convert the newline identifier into the appropriate integer value. 353case "$enable_newline" in 354 lf) ac_pcre_newline_value=10 ;; 355 cr) ac_pcre_newline_value=13 ;; 356 crlf) ac_pcre_newline_value=3338 ;; 357 anycrlf) ac_pcre_newline_value=-2 ;; 358 any) ac_pcre_newline_value=-1 ;; 359 *) 360 AC_MSG_ERROR([invalid argument \"$enable_newline\" to --enable-newline option]) 361 ;; 362esac 363 364# Check argument to --with-link-size 365case "$with_link_size" in 366 2|3|4) ;; 367 *) 368 AC_MSG_ERROR([invalid argument \"$with_link_size\" to --with-link-size option]) 369 ;; 370esac 371 372AH_TOP([ 373/* On Unix-like systems config.h.in is converted by "configure" into config.h. 374Some other environments also support the use of "configure". PCRE is written in 375Standard C, but there are a few non-standard things it can cope with, allowing 376it to run on SunOS4 and other "close to standard" systems. 377 378If you are going to build PCRE "by hand" on a system without "configure" you 379should copy the distributed config.h.generic to config.h, and then set up the 380macro definitions the way you need them. You must then add -DHAVE_CONFIG_H to 381all of your compile commands, so that config.h is included at the start of 382every source. 383 384Alternatively, you can avoid editing by using -D on the compiler command line 385to set the macro values. In this case, you do not have to set -DHAVE_CONFIG_H. 386 387PCRE uses memmove() if HAVE_MEMMOVE is set to 1; otherwise it uses bcopy() if 388HAVE_BCOPY is set to 1. If your system has neither bcopy() nor memmove(), set 389them both to 0; an emulation function will be used. */]) 390 391# Checks for header files. 392AC_HEADER_STDC 393AC_CHECK_HEADERS(limits.h sys/types.h sys/stat.h dirent.h windows.h) 394 395# The files below are C++ header files. 396pcre_have_type_traits="0" 397pcre_have_bits_type_traits="0" 398if test "x$enable_cpp" = "xyes" -a -n "$CXX" 399then 400AC_LANG_PUSH(C++) 401 402# Older versions of pcre defined pcrecpp::no_arg, but in new versions 403# it's called pcrecpp::RE::no_arg. For backwards ABI compatibility, 404# we want to make one an alias for the other. Different systems do 405# this in different ways. Some systems, for instance, can do it via 406# a linker flag: -alias (for os x 10.5) or -i (for os x <=10.4). 407OLD_LDFLAGS="$LDFLAGS" 408for flag in "-alias,__ZN7pcrecpp2RE6no_argE,__ZN7pcrecpp6no_argE" \ 409 "-i__ZN7pcrecpp6no_argE:__ZN7pcrecpp2RE6no_argE"; do 410 AC_MSG_CHECKING([for alias support in the linker]) 411 LDFLAGS="$OLD_LDFLAGS -Wl,$flag" 412 # We try to run the linker with this new ld flag. If the link fails, 413 # we give up and remove the new flag from LDFLAGS. 414 AC_LINK_IFELSE([AC_LANG_PROGRAM([namespace pcrecpp { 415 class RE { static int no_arg; }; 416 int RE::no_arg; 417 }], 418 [])], 419 [AC_MSG_RESULT([yes]); 420 EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS -Wl,$flag"; 421 break;], 422 AC_MSG_RESULT([no])) 423done 424LDFLAGS="$OLD_LDFLAGS" 425 426# We could be more clever here, given we're doing AC_SUBST with this 427# (eg set a var to be the name of the include file we want). But we're not 428# so it's easy to change back to 'regular' autoconf vars if we needed to. 429AC_CHECK_HEADERS(string, [pcre_have_cpp_headers="1"], 430 [pcre_have_cpp_headers="0"]) 431AC_CHECK_HEADERS(bits/type_traits.h, [pcre_have_bits_type_traits="1"], 432 [pcre_have_bits_type_traits="0"]) 433AC_CHECK_HEADERS(type_traits.h, [pcre_have_type_traits="1"], 434 [pcre_have_type_traits="0"]) 435 436# (This isn't c++-specific, but is only used in pcrecpp.cc, so try this 437# in a c++ context. This matters becuase strtoimax is C99 and may not 438# be supported by the C++ compiler.) 439# Figure out how to create a longlong from a string: strtoll and 440# equiv. It's not enough to call AC_CHECK_FUNCS: hpux has a 441# strtoll, for instance, but it only takes 2 args instead of 3! 442# We have to call AH_TEMPLATE since AC_DEFINE_UNQUOTED below is complex. 443AH_TEMPLATE(HAVE_STRTOQ, [Define to 1 if you have `strtoq'.]) 444AH_TEMPLATE(HAVE_STRTOLL, [Define to 1 if you have `strtoll'.]) 445AH_TEMPLATE(HAVE__STRTOI64, [Define to 1 if you have `_strtoi64'.]) 446AH_TEMPLATE(HAVE_STRTOIMAX, [Define to 1 if you have `strtoimax'.]) 447have_strto_fn=0 448for fn in strtoq strtoll _strtoi64 strtoimax; do 449 AC_MSG_CHECKING([for $fn]) 450 if test "$fn" = strtoimax; then 451 include=stdint.h 452 else 453 include=stdlib.h 454 fi 455 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <$include>], 456 [char* e; return $fn("100", &e, 10)])], 457 [AC_MSG_RESULT(yes) 458 AC_DEFINE_UNQUOTED(HAVE_`echo $fn | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`, 1, 459 [Define to 1 if you have `$fn'.]) 460 have_strto_fn=1 461 break], 462 [AC_MSG_RESULT(no)]) 463done 464 465if test "$have_strto_fn" = 1; then 466 AC_CHECK_TYPES([long long], 467 [pcre_have_long_long="1"], 468 [pcre_have_long_long="0"]) 469 AC_CHECK_TYPES([unsigned long long], 470 [pcre_have_ulong_long="1"], 471 [pcre_have_ulong_long="0"]) 472else 473 pcre_have_long_long="0" 474 pcre_have_ulong_long="0" 475fi 476AC_SUBST(pcre_have_long_long) 477AC_SUBST(pcre_have_ulong_long) 478 479AC_LANG_POP 480fi 481# Using AC_SUBST eliminates the need to include config.h in a public .h file 482AC_SUBST(pcre_have_type_traits) 483AC_SUBST(pcre_have_bits_type_traits) 484 485# Conditional compilation 486AM_CONDITIONAL(WITH_PCRE8, test "x$enable_pcre8" = "xyes") 487AM_CONDITIONAL(WITH_PCRE16, test "x$enable_pcre16" = "xyes") 488AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes") 489AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes") 490AM_CONDITIONAL(WITH_JIT, test "x$enable_jit" = "xyes") 491AM_CONDITIONAL(WITH_UTF, test "x$enable_utf" = "xyes") 492 493# Checks for typedefs, structures, and compiler characteristics. 494 495AC_C_CONST 496AC_TYPE_SIZE_T 497 498# Checks for library functions. 499 500AC_CHECK_FUNCS(bcopy memmove strerror) 501 502# Check for the availability of libz (aka zlib) 503 504AC_CHECK_HEADERS([zlib.h], [HAVE_ZLIB_H=1]) 505AC_CHECK_LIB([z], [gzopen], [HAVE_LIBZ=1]) 506 507# Check for the availability of libbz2. Originally we just used AC_CHECK_LIB, 508# as for libz. However, this had the following problem, diagnosed and fixed by 509# a user: 510# 511# - libbz2 uses the Pascal calling convention (WINAPI) for the functions 512# under Win32. 513# - The standard autoconf AC_CHECK_LIB fails to include "bzlib.h", 514# therefore missing the function definition. 515# - The compiler thus generates a "C" signature for the test function. 516# - The linker fails to find the "C" function. 517# - PCRE fails to configure if asked to do so against libbz2. 518# 519# Solution: 520# 521# - Replace the AC_CHECK_LIB test with a custom test. 522 523AC_CHECK_HEADERS([bzlib.h], [HAVE_BZLIB_H=1]) 524# Original test 525# AC_CHECK_LIB([bz2], [BZ2_bzopen], [HAVE_LIBBZ2=1]) 526# 527# Custom test follows 528 529AC_MSG_CHECKING([for libbz2]) 530OLD_LIBS="$LIBS" 531LIBS="$LIBS -lbz2" 532AC_LINK_IFELSE([AC_LANG_PROGRAM([[ 533#ifdef HAVE_BZLIB_H 534#include <bzlib.h> 535#endif]], 536[[return (int)BZ2_bzopen("conftest", "rb");]])], 537[AC_MSG_RESULT([yes]);HAVE_LIBBZ2=1; break;], 538AC_MSG_RESULT([no])) 539LIBS="$OLD_LIBS" 540 541# Check for the availabiity of libreadline 542 543if test "$enable_pcretest_libreadline" = "yes"; then 544 AC_CHECK_HEADERS([readline/readline.h], [HAVE_READLINE_H=1]) 545 AC_CHECK_HEADERS([readline/history.h], [HAVE_HISTORY_H=1]) 546 AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-lreadline"], 547 [unset ac_cv_lib_readline_readline; 548 AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-ltinfo"], 549 [unset ac_cv_lib_readline_readline; 550 AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-lcurses"], 551 [unset ac_cv_lib_readline_readline; 552 AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-lncurses"], 553 [unset ac_cv_lib_readline_readline; 554 AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-lncursesw"], 555 [unset ac_cv_lib_readline_readline; 556 AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-ltermcap"], 557 [LIBREADLINE=""], 558 [-ltermcap])], 559 [-lncursesw])], 560 [-lncurses])], 561 [-lcurses])], 562 [-ltinfo])]) 563 AC_SUBST(LIBREADLINE) 564 if test -n "$LIBREADLINE"; then 565 if test "$LIBREADLINE" != "-lreadline"; then 566 echo "-lreadline needs $LIBREADLINE" 567 LIBREADLINE="-lreadline $LIBREADLINE" 568 fi 569 fi 570fi 571 572 573# Check for the availability of libedit. Different distributions put its 574# headers in different places. Try to cover the most common ones. 575 576if test "$enable_pcretest_libedit" = "yes"; then 577 AC_CHECK_HEADERS([editline/readline.h], [HAVE_EDITLINE_READLINE_H=1], 578 [AC_CHECK_HEADERS([edit/readline/readline.h], [HAVE_READLINE_READLINE_H=1], 579 [AC_CHECK_HEADERS([readline/readline.h], [HAVE_READLINE_READLINE_H=1])])]) 580 AC_CHECK_LIB([edit], [readline], [LIBEDIT="-ledit"]) 581fi 582 583# This facilitates -ansi builds under Linux 584dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc]) 585 586PCRE_STATIC_CFLAG="" 587if test "x$enable_shared" = "xno" ; then 588 AC_DEFINE([PCRE_STATIC], [1], [ 589 Define if linking statically (TODO: make nice with Libtool)]) 590 PCRE_STATIC_CFLAG="-DPCRE_STATIC" 591fi 592AC_SUBST(PCRE_STATIC_CFLAG) 593 594# Here is where pcre specific defines are handled 595 596if test "$enable_pcre8" = "yes"; then 597 AC_DEFINE([SUPPORT_PCRE8], [], [ 598 Define to enable the 8 bit PCRE library.]) 599fi 600 601if test "$enable_pcre16" = "yes"; then 602 AC_DEFINE([SUPPORT_PCRE16], [], [ 603 Define to enable the 16 bit PCRE library.]) 604fi 605 606if test "$enable_jit" = "yes"; then 607 AC_DEFINE([SUPPORT_JIT], [], [ 608 Define to enable support for Just-In-Time compiling.]) 609else 610 enable_pcregrep_jit="no" 611fi 612 613if test "$enable_pcregrep_jit" = "yes"; then 614 AC_DEFINE([SUPPORT_PCREGREP_JIT], [], [ 615 Define to enable JIT support in pcregrep.]) 616fi 617 618if test "$enable_utf" = "yes"; then 619 AC_DEFINE([SUPPORT_UTF], [], [ 620 Define to enable support for the UTF-8/16 Unicode encoding. This 621 will work even in an EBCDIC environment, but it is incompatible 622 with the EBCDIC macro. That is, PCRE can support *either* EBCDIC 623 code *or* ASCII/UTF-8/16, but not both at once.]) 624fi 625 626if test "$enable_unicode_properties" = "yes"; then 627 AC_DEFINE([SUPPORT_UCP], [], [ 628 Define to enable support for Unicode properties.]) 629fi 630 631if test "$enable_stack_for_recursion" = "no"; then 632 AC_DEFINE([NO_RECURSE], [], [ 633 PCRE uses recursive function calls to handle backtracking while 634 matching. This can sometimes be a problem on systems that have 635 stacks of limited size. Define NO_RECURSE to get a version that 636 doesn't use recursion in the match() function; instead it creates 637 its own stack by steam using pcre_recurse_malloc() to obtain memory 638 from the heap. For more detail, see the comments and other stuff 639 just above the match() function. On systems that support it, 640 "configure" can be used to set this in the Makefile 641 (use --disable-stack-for-recursion).]) 642fi 643 644if test "$enable_pcregrep_libz" = "yes"; then 645 AC_DEFINE([SUPPORT_LIBZ], [], [ 646 Define to allow pcregrep to be linked with libz, so that it is 647 able to handle .gz files.]) 648fi 649 650if test "$enable_pcregrep_libbz2" = "yes"; then 651 AC_DEFINE([SUPPORT_LIBBZ2], [], [ 652 Define to allow pcregrep to be linked with libbz2, so that it is 653 able to handle .bz2 files.]) 654fi 655 656if test $with_pcregrep_bufsize -lt 8192 ; then 657 with_pcregrep_bufsize="8192" 658fi 659 660AC_DEFINE_UNQUOTED([PCREGREP_BUFSIZE], [$with_pcregrep_bufsize], [ 661 The value of PCREGREP_BUFSIZE determines the size of buffer used by 662 pcregrep to hold parts of the file it is searching. On systems that 663 support it, "configure" can be used to override the default, which is 664 8192. This is also the minimum value. The actual amount of memory used by 665 pcregrep is three times this number, because it allows for the buffering of 666 "before" and "after" lines.]) 667 668if test "$enable_pcretest_libedit" = "yes"; then 669 AC_DEFINE([SUPPORT_LIBEDIT], [], [ 670 Define to allow pcretest to be linked with libedit.]) 671 LIBREADLINE="$LIBEDIT" 672elif test "$enable_pcretest_libreadline" = "yes"; then 673 AC_DEFINE([SUPPORT_LIBREADLINE], [], [ 674 Define to allow pcretest to be linked with libreadline.]) 675fi 676 677AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [ 678 The value of NEWLINE determines the newline character sequence. On 679 systems that support it, "configure" can be used to override the 680 default, which is 10. The possible values are 10 (LF), 13 (CR), 681 3338 (CRLF), -1 (ANY), or -2 (ANYCRLF).]) 682 683if test "$enable_bsr_anycrlf" = "yes"; then 684 AC_DEFINE([BSR_ANYCRLF], [], [ 685 By default, the \R escape sequence matches any Unicode line ending 686 character or sequence of characters. If BSR_ANYCRLF is defined, this is 687 changed so that backslash-R matches only CR, LF, or CRLF. The build- 688 time default can be overridden by the user of PCRE at runtime. On 689 systems that support it, "configure" can be used to override the 690 default.]) 691fi 692 693AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [ 694 The value of LINK_SIZE determines the number of bytes used to store 695 links as offsets within the compiled regex. The default is 2, which 696 allows for compiled patterns up to 64K long. This covers the vast 697 majority of cases. However, PCRE can also be compiled to use 3 or 4 698 bytes instead. This allows for longer patterns in extreme cases. On 699 systems that support it, "configure" can be used to override this default.]) 700 701AC_DEFINE_UNQUOTED([POSIX_MALLOC_THRESHOLD], [$with_posix_malloc_threshold], [ 702 When calling PCRE via the POSIX interface, additional working storage 703 is required for holding the pointers to capturing substrings because 704 PCRE requires three integers per substring, whereas the POSIX 705 interface provides only two. If the number of expected substrings is 706 small, the wrapper function uses space on the stack, because this is 707 faster than using malloc() for each call. The threshold above which 708 the stack is no longer used is defined by POSIX_MALLOC_THRESHOLD. On 709 systems that support it, "configure" can be used to override this 710 default.]) 711 712AC_DEFINE_UNQUOTED([MATCH_LIMIT], [$with_match_limit], [ 713 The value of MATCH_LIMIT determines the default number of times the 714 internal match() function can be called during a single execution of 715 pcre_exec(). There is a runtime interface for setting a different 716 limit. The limit exists in order to catch runaway regular 717 expressions that take for ever to determine that they do not match. 718 The default is set very large so that it does not accidentally catch 719 legitimate cases. On systems that support it, "configure" can be 720 used to override this default default.]) 721 722AC_DEFINE_UNQUOTED([MATCH_LIMIT_RECURSION], [$with_match_limit_recursion], [ 723 The above limit applies to all calls of match(), whether or not they 724 increase the recursion depth. In some environments it is desirable 725 to limit the depth of recursive calls of match() more strictly, in 726 order to restrict the maximum amount of stack (or heap, if 727 NO_RECURSE is defined) that is used. The value of 728 MATCH_LIMIT_RECURSION applies only to recursive calls of match(). To 729 have any useful effect, it must be less than the value of 730 MATCH_LIMIT. The default is to use the same value as MATCH_LIMIT. 731 There is a runtime method for setting a different limit. On systems 732 that support it, "configure" can be used to override the default.]) 733 734AC_DEFINE([MAX_NAME_SIZE], [32], [ 735 This limit is parameterized just in case anybody ever wants to 736 change it. Care must be taken if it is increased, because it guards 737 against integer overflow caused by enormously large patterns.]) 738 739AC_DEFINE([MAX_NAME_COUNT], [10000], [ 740 This limit is parameterized just in case anybody ever wants to 741 change it. Care must be taken if it is increased, because it guards 742 against integer overflow caused by enormously large patterns.]) 743 744AH_VERBATIM([PCRE_EXP_DEFN], [ 745/* If you are compiling for a system other than a Unix-like system or 746 Win32, and it needs some magic to be inserted before the definition 747 of a function that is exported by the library, define this macro to 748 contain the relevant magic. If you do not define this macro, it 749 defaults to "extern" for a C compiler and "extern C" for a C++ 750 compiler on non-Win32 systems. This macro apears at the start of 751 every exported function that is part of the external API. It does 752 not appear on functions that are "external" in the C sense, but 753 which are internal to the library. */ 754#undef PCRE_EXP_DEFN]) 755 756if test "$enable_ebcdic" = "yes"; then 757 AC_DEFINE_UNQUOTED([EBCDIC], [], [ 758 If you are compiling for a system that uses EBCDIC instead of ASCII 759 character codes, define this macro as 1. On systems that can use 760 "configure", this can be done via --enable-ebcdic. PCRE will then 761 assume that all input strings are in EBCDIC. If you do not define 762 this macro, PCRE will assume input strings are ASCII or UTF-8/16 763 Unicode. It is not possible to build a version of PCRE that 764 supports both EBCDIC and UTF-8/16.]) 765fi 766 767# Platform specific issues 768NO_UNDEFINED= 769EXPORT_ALL_SYMBOLS= 770case $host_os in 771 cygwin* | mingw* ) 772 if test X"$enable_shared" = Xyes; then 773 NO_UNDEFINED="-no-undefined" 774 EXPORT_ALL_SYMBOLS="-Wl,--export-all-symbols" 775 fi 776 ;; 777esac 778 779# The extra LDFLAGS for each particular library 780# (Note: The libpcre*_version bits are m4 variables, assigned above) 781 782EXTRA_LIBPCRE_LDFLAGS="$EXTRA_LIBPCRE_LDFLAGS \ 783 $NO_UNDEFINED -version-info libpcre_version" 784 785EXTRA_LIBPCRE16_LDFLAGS="$EXTRA_LIBPCRE16_LDFLAGS \ 786 $NO_UNDEFINED -version-info libpcre16_version" 787 788EXTRA_LIBPCREPOSIX_LDFLAGS="$EXTRA_LIBPCREPOSIX_LDFLAGS \ 789 $NO_UNDEFINED -version-info libpcreposix_version" 790 791EXTRA_LIBPCRECPP_LDFLAGS="$EXTRA_LIBPCRECPP_LDFLAGS \ 792 $NO_UNDEFINED -version-info libpcrecpp_version \ 793 $EXPORT_ALL_SYMBOLS" 794 795AC_SUBST(EXTRA_LIBPCRE_LDFLAGS) 796AC_SUBST(EXTRA_LIBPCRE16_LDFLAGS) 797AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS) 798AC_SUBST(EXTRA_LIBPCRECPP_LDFLAGS) 799 800# When we run 'make distcheck', use these arguments. Turning off compiler 801# optimization makes it run faster. 802DISTCHECK_CONFIGURE_FLAGS="CFLAGS='' CXXFLAGS='' --enable-pcre16 --enable-jit --enable-cpp --enable-unicode-properties" 803AC_SUBST(DISTCHECK_CONFIGURE_FLAGS) 804 805# Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is 806# specified, the relevant library is available. 807 808if test "$enable_pcregrep_libz" = "yes"; then 809 if test "$HAVE_ZLIB_H" != "1"; then 810 echo "** Cannot --enable-pcregrep-libz because zlib.h was not found" 811 exit 1 812 fi 813 if test "$HAVE_LIBZ" != "1"; then 814 echo "** Cannot --enable-pcregrep-libz because libz was not found" 815 exit 1 816 fi 817 LIBZ="-lz" 818fi 819AC_SUBST(LIBZ) 820 821if test "$enable_pcregrep_libbz2" = "yes"; then 822 if test "$HAVE_BZLIB_H" != "1"; then 823 echo "** Cannot --enable-pcregrep-libbz2 because bzlib.h was not found" 824 exit 1 825 fi 826 if test "$HAVE_LIBBZ2" != "1"; then 827 echo "** Cannot --enable-pcregrep-libbz2 because libbz2 was not found" 828 exit 1 829 fi 830 LIBBZ2="-lbz2" 831fi 832AC_SUBST(LIBBZ2) 833 834# Similarly for --enable-pcretest-readline 835 836if test "$enable_pcretest_libedit" = "yes"; then 837 if test "$enable_pcretest_libreadline" = "yes"; then 838 echo "** Cannot use both --enable-pcretest-libedit and --enable-pcretest-readline" 839 exit 1 840 fi 841 if test "$HAVE_EDITLINE_READLINE_H" != "1" -a \ 842 "$HAVE_READLINE_READLINE_H" != "1"; then 843 echo "** Cannot --enable-pcretest-libedit because neither editline/readline.h" 844 echo "** nor readline/readline.h was found." 845 exit 1 846 fi 847 if test -z "$LIBEDIT"; then 848 echo "** Cannot --enable-pcretest-libedit because libedit library was not found." 849 exit 1 850 fi 851fi 852 853if test "$enable_pcretest_libreadline" = "yes"; then 854 if test "$HAVE_READLINE_H" != "1"; then 855 echo "** Cannot --enable-pcretest-readline because readline/readline.h was not found." 856 exit 1 857 fi 858 if test "$HAVE_HISTORY_H" != "1"; then 859 echo "** Cannot --enable-pcretest-readline because readline/history.h was not found." 860 exit 1 861 fi 862 if test -z "$LIBREADLINE"; then 863 echo "** Cannot --enable-pcretest-readline because readline library was not found." 864 exit 1 865 fi 866fi 867 868# Produce these files, in addition to config.h. 869AC_CONFIG_FILES( 870 Makefile 871 libpcre.pc 872 libpcre16.pc 873 libpcreposix.pc 874 libpcrecpp.pc 875 pcre-config 876 pcre.h 877 pcre_stringpiece.h 878 pcrecpparg.h 879) 880 881# Make the generated script files executable. 882AC_CONFIG_COMMANDS([script-chmod], [chmod a+x pcre-config]) 883 884# Make sure that pcre_chartables.c is removed in case the method for 885# creating it was changed by reconfiguration. 886AC_CONFIG_COMMANDS([delete-old-chartables], [rm -f pcre_chartables.c]) 887 888AC_OUTPUT 889 890# Print out a nice little message after configure is run displaying your 891# chosen options. 892 893cat <<EOF 894 895$PACKAGE-$VERSION configuration summary: 896 897 Install prefix .................. : ${prefix} 898 C preprocessor .................. : ${CPP} 899 C compiler ...................... : ${CC} 900 C++ preprocessor ................ : ${CXXCPP} 901 C++ compiler .................... : ${CXX} 902 Linker .......................... : ${LD} 903 C preprocessor flags ............ : ${CPPFLAGS} 904 C compiler flags ................ : ${CFLAGS} 905 C++ compiler flags .............. : ${CXXFLAGS} 906 Linker flags .................... : ${LDFLAGS} 907 Extra libraries ................. : ${LIBS} 908 909 Build 8 bit pcre library ........ : ${enable_pcre8} 910 Build 16 bit pcre library ....... : ${enable_pcre16} 911 Build C++ library ............... : ${enable_cpp} 912 Enable JIT compiling support .... : ${enable_jit} 913 Enable UTF-8/16 support ......... : ${enable_utf} 914 Unicode properties .............. : ${enable_unicode_properties} 915 Newline char/sequence ........... : ${enable_newline} 916 \R matches only ANYCRLF ......... : ${enable_bsr_anycrlf} 917 EBCDIC coding ................... : ${enable_ebcdic} 918 Rebuild char tables ............. : ${enable_rebuild_chartables} 919 Use stack recursion ............. : ${enable_stack_for_recursion} 920 POSIX mem threshold ............. : ${with_posix_malloc_threshold} 921 Internal link size .............. : ${with_link_size} 922 Match limit ..................... : ${with_match_limit} 923 Match limit recursion ........... : ${with_match_limit_recursion} 924 Build shared libs ............... : ${enable_shared} 925 Build static libs ............... : ${enable_static} 926 Use JIT in pcregrep ............. : ${enable_pcregrep_jit} 927 Buffer size for pcregrep ........ : ${with_pcregrep_bufsize} 928 Link pcregrep with libz ......... : ${enable_pcregrep_libz} 929 Link pcregrep with libbz2 ....... : ${enable_pcregrep_libbz2} 930 Link pcretest with libedit ...... : ${enable_pcretest_libedit} 931 Link pcretest with libreadline .. : ${enable_pcretest_libreadline} 932 933EOF 934 935dnl end configure.ac 936