dnl Process this file with autoconf to produce a configure script. dnl NOTE FOR MAINTAINERS: Do not use minor version numbers 08 or 09 because dnl the leading zeros may cause them to be treated as invalid octal constants dnl if a PCRE2 user writes code that uses PCRE2_MINOR as a number. There is now dnl a check further down that throws an error if 08 or 09 are used. dnl The PCRE2_PRERELEASE feature is for identifying release candidates. It might dnl be defined as -RC2, for example. For real releases, it should be empty. m4_define(pcre2_major, [10]) m4_define(pcre2_minor, [44]) m4_define(pcre2_prerelease, []) m4_define(pcre2_date, [2024-06-07]) # Libtool shared library interface versions (current:revision:age) m4_define(libpcre2_8_version, [13:0:13]) m4_define(libpcre2_16_version, [13:0:13]) m4_define(libpcre2_32_version, [13:0:13]) m4_define(libpcre2_posix_version, [3:5:0]) # NOTE: The CMakeLists.txt file searches for the above variables in the first # 50 lines of this file. Please update that if the variables above are moved. AC_PREREQ([2.62]) AC_INIT([PCRE2],pcre2_major.pcre2_minor[]pcre2_prerelease,[],[pcre2]) AC_CONFIG_SRCDIR([src/pcre2.h.in]) AM_INIT_AUTOMAKE([dist-bzip2 dist-zip]) m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])]) AC_CONFIG_HEADERS(src/config.h) # This was added at the suggestion of libtoolize (03-Jan-10) AC_CONFIG_MACRO_DIR([m4]) # The default CFLAGS in Autoconf are "-g -O2" for gcc and just "-g" for any # other compiler. There doesn't seem to be a standard way of getting rid of the # -g (which I don't think is needed for a production library). This fudge seems # to achieve the necessary. First, we remember the externally set values of # CFLAGS. Then call the AC_PROG_CC macro to find the compiler - if CFLAGS is # not set, it will be set to Autoconf's defaults. Afterwards, if the original # values were not set, remove the -g from the Autoconf defaults. remember_set_CFLAGS="$CFLAGS" m4_version_prereq(2.70, [AC_PROG_CC], [AC_PROG_CC_C99]) AM_PROG_CC_C_O AC_USE_SYSTEM_EXTENSIONS if test "x$remember_set_CFLAGS" = "x" then if test "$CFLAGS" = "-g -O2" then CFLAGS="-O2" elif test "$CFLAGS" = "-g" then CFLAGS="" fi fi # This is a new thing required to stop a warning from automake 1.12 m4_ifdef([AM_PROG_AR], [AM_PROG_AR]) # Check for a 64-bit integer type AC_TYPE_INT64_T AC_PROG_INSTALL LT_INIT([win32-dll]) AC_PROG_LN_S AC_SYS_LARGEFILE # Check for GCC visibility feature PCRE2_VISIBILITY # Check for the mul_overflow() builtin AC_MSG_CHECKING([for __builtin_mul_overflow()]) AC_LANG_PUSH([C]) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #ifdef HAVE_SYS_TYPES_H #include #endif #include int a, b; size_t m; ]], [[__builtin_mul_overflow(a, b, &m)]])], [pcre2_cc_cv_builtin_mul_overflow=yes], [pcre2_cc_cv_builtin_mul_overflow=no]) AC_MSG_RESULT([$pcre2_cc_cv_builtin_mul_overflow]) if test "$pcre2_cc_cv_builtin_mul_overflow" = yes; then AC_DEFINE([HAVE_BUILTIN_MUL_OVERFLOW], 1, [Define this if your compiler provides __builtin_mul_overflow()]) fi AC_LANG_POP([C]) # Check for Clang __attribute__((uninitialized)) feature AC_MSG_CHECKING([for __attribute__((uninitialized))]) AC_LANG_PUSH([C]) tmp_CFLAGS=$CFLAGS CFLAGS="$CFLAGS -Werror" AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [[char buf[128] __attribute__((uninitialized));(void)buf]])], [pcre2_cc_cv_attribute_uninitialized=yes], [pcre2_cc_cv_attribute_uninitialized=no]) AC_MSG_RESULT([$pcre2_cc_cv_attribute_uninitialized]) if test "$pcre2_cc_cv_attribute_uninitialized" = yes; then AC_DEFINE([HAVE_ATTRIBUTE_UNINITIALIZED], 1, [Define this if your compiler supports __attribute__((uninitialized))]) fi CFLAGS=$tmp_CFLAGS AC_LANG_POP([C]) # Versioning PCRE2_MAJOR="pcre2_major" PCRE2_MINOR="pcre2_minor" PCRE2_PRERELEASE="pcre2_prerelease" PCRE2_DATE="pcre2_date" if test "$PCRE2_MINOR" = "08" -o "$PCRE2_MINOR" = "09" then echo "***" echo "*** Minor version number $PCRE2_MINOR must not be used. ***" echo "*** Use only 00 to 07 or 10 onwards, to avoid octal issues. ***" echo "***" exit 1 fi AC_SUBST(PCRE2_MAJOR) AC_SUBST(PCRE2_MINOR) AC_SUBST(PCRE2_PRERELEASE) AC_SUBST(PCRE2_DATE) # Set a more sensible default value for $(htmldir). if test "x$htmldir" = 'x${docdir}' then htmldir='${docdir}/html' fi # Force an error for PCRE1 size options AC_ARG_ENABLE(pcre8,,,enable_pcre8=no) AC_ARG_ENABLE(pcre16,,,enable_pcre16=no) AC_ARG_ENABLE(pcre32,,,enable_pcre32=no) if test "$enable_pcre8$enable_pcre16$enable_pcre32" != "nonono" then echo "** ERROR: Use --[[en|dis]]able-pcre2-[[8|16|32]], not --[[en|dis]]able-pcre[[8|16|32]]" exit 1 fi # Handle --disable-pcre2-8 (enabled by default) AC_ARG_ENABLE(pcre2-8, AS_HELP_STRING([--disable-pcre2-8], [disable 8 bit character support]), , enable_pcre2_8=unset) AC_SUBST(enable_pcre2_8) # Handle --enable-pcre2-16 (disabled by default) AC_ARG_ENABLE(pcre2-16, AS_HELP_STRING([--enable-pcre2-16], [enable 16 bit character support]), , enable_pcre2_16=unset) AC_SUBST(enable_pcre2_16) # Handle --enable-pcre2-32 (disabled by default) AC_ARG_ENABLE(pcre2-32, AS_HELP_STRING([--enable-pcre2-32], [enable 32 bit character support]), , enable_pcre2_32=unset) AC_SUBST(enable_pcre2_32) # Handle --enable-debug (disabled by default) AC_ARG_ENABLE(debug, AS_HELP_STRING([--enable-debug], [enable debugging code]), , enable_debug=no) # Handle --enable-jit (disabled by default) AC_ARG_ENABLE(jit, AS_HELP_STRING([--enable-jit], [enable Just-In-Time compiling support]), , enable_jit=no) # This code enables JIT if the hardware supports it. if test "$enable_jit" = "auto"; then AC_LANG(C) SAVE_CPPFLAGS=$CPPFLAGS CPPFLAGS=-I$srcdir AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ #define SLJIT_CONFIG_AUTO 1 #include "src/sljit/sljitConfigCPU.h" #if (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED) #error unsupported #endif]])], enable_jit=yes, enable_jit=no) CPPFLAGS=$SAVE_CPPFLAGS echo checking for JIT support on this hardware... $enable_jit fi # Handle --enable-jit-sealloc (disabled by default and only experimental) case $host_os in linux* | netbsd*) AC_ARG_ENABLE(jit-sealloc, AS_HELP_STRING([--enable-jit-sealloc], [enable SELinux compatible execmem allocator in JIT (experimental)]), ,enable_jit_sealloc=no) ;; *) enable_jit_sealloc=unsupported ;; esac # Handle --disable-pcre2grep-jit (enabled by default) AC_ARG_ENABLE(pcre2grep-jit, AS_HELP_STRING([--disable-pcre2grep-jit], [disable JIT support in pcre2grep]), , enable_pcre2grep_jit=yes) # Handle --disable-pcre2grep-callout (enabled by default) AC_ARG_ENABLE(pcre2grep-callout, AS_HELP_STRING([--disable-pcre2grep-callout], [disable callout script support in pcre2grep]), , enable_pcre2grep_callout=yes) # Handle --disable-pcre2grep-callout-fork (enabled by default) AC_ARG_ENABLE(pcre2grep-callout-fork, AS_HELP_STRING([--disable-pcre2grep-callout-fork], [disable callout script fork support in pcre2grep]), , enable_pcre2grep_callout_fork=yes) # Handle --enable-rebuild-chartables AC_ARG_ENABLE(rebuild-chartables, AS_HELP_STRING([--enable-rebuild-chartables], [rebuild character tables in current locale]), , enable_rebuild_chartables=no) # Handle --disable-unicode (enabled by default) AC_ARG_ENABLE(unicode, AS_HELP_STRING([--disable-unicode], [disable Unicode support]), , enable_unicode=unset) # Handle newline options ac_pcre2_newline=lf AC_ARG_ENABLE(newline-is-cr, AS_HELP_STRING([--enable-newline-is-cr], [use CR as newline character]), ac_pcre2_newline=cr) AC_ARG_ENABLE(newline-is-lf, AS_HELP_STRING([--enable-newline-is-lf], [use LF as newline character (default)]), ac_pcre2_newline=lf) AC_ARG_ENABLE(newline-is-crlf, AS_HELP_STRING([--enable-newline-is-crlf], [use CRLF as newline sequence]), ac_pcre2_newline=crlf) AC_ARG_ENABLE(newline-is-anycrlf, AS_HELP_STRING([--enable-newline-is-anycrlf], [use CR, LF, or CRLF as newline sequence]), ac_pcre2_newline=anycrlf) AC_ARG_ENABLE(newline-is-any, AS_HELP_STRING([--enable-newline-is-any], [use any valid Unicode newline sequence]), ac_pcre2_newline=any) AC_ARG_ENABLE(newline-is-nul, AS_HELP_STRING([--enable-newline-is-nul], [use NUL (binary zero) as newline character]), ac_pcre2_newline=nul) enable_newline="$ac_pcre2_newline" # Handle --enable-bsr-anycrlf AC_ARG_ENABLE(bsr-anycrlf, AS_HELP_STRING([--enable-bsr-anycrlf], [\R matches only CR, LF, CRLF by default]), , enable_bsr_anycrlf=no) # Handle --enable-never-backslash-C AC_ARG_ENABLE(never-backslash-C, AS_HELP_STRING([--enable-never-backslash-C], [use of \C causes an error]), , enable_never_backslash_C=no) # Handle --enable-ebcdic AC_ARG_ENABLE(ebcdic, AS_HELP_STRING([--enable-ebcdic], [assume EBCDIC coding rather than ASCII; incompatible with --enable-utf; use only in (uncommon) EBCDIC environments; it implies --enable-rebuild-chartables]), , enable_ebcdic=no) # Handle --enable-ebcdic-nl25 AC_ARG_ENABLE(ebcdic-nl25, AS_HELP_STRING([--enable-ebcdic-nl25], [set EBCDIC code for NL to 0x25 instead of 0x15; it implies --enable-ebcdic]), , enable_ebcdic_nl25=no) # Handle --enable-pcre2grep-libz AC_ARG_ENABLE(pcre2grep-libz, AS_HELP_STRING([--enable-pcre2grep-libz], [link pcre2grep with libz to handle .gz files]), , enable_pcre2grep_libz=no) # Handle --enable-pcre2grep-libbz2 AC_ARG_ENABLE(pcre2grep-libbz2, AS_HELP_STRING([--enable-pcre2grep-libbz2], [link pcre2grep with libbz2 to handle .bz2 files]), , enable_pcre2grep_libbz2=no) # Handle --with-pcre2grep-bufsize=N AC_ARG_WITH(pcre2grep-bufsize, AS_HELP_STRING([--with-pcre2grep-bufsize=N], [pcre2grep initial buffer size (default=20480, minimum=8192)]), , with_pcre2grep_bufsize=20480) # Handle --with-pcre2grep-max-bufsize=N AC_ARG_WITH(pcre2grep-max-bufsize, AS_HELP_STRING([--with-pcre2grep-max-bufsize=N], [pcre2grep maximum buffer size (default=1048576, minimum=8192)]), , with_pcre2grep_max_bufsize=1048576) # Handle --enable-pcre2test-libedit AC_ARG_ENABLE(pcre2test-libedit, AS_HELP_STRING([--enable-pcre2test-libedit], [link pcre2test with libedit]), , enable_pcre2test_libedit=no) # Handle --enable-pcre2test-libreadline AC_ARG_ENABLE(pcre2test-libreadline, AS_HELP_STRING([--enable-pcre2test-libreadline], [link pcre2test with libreadline]), , enable_pcre2test_libreadline=no) # Handle --with-link-size=N AC_ARG_WITH(link-size, AS_HELP_STRING([--with-link-size=N], [internal link size (2, 3, or 4 allowed; default=2)]), , with_link_size=2) # Handle --with-max-varlookbehind=N AC_ARG_WITH(max-varlookbehind, AS_HELP_STRING([--with-max-varlookbehind=N], [maximum length of variable lookbehind (default=255)]), , with_max_varlookbehind=255) # Handle --with-parens-nest-limit=N AC_ARG_WITH(parens-nest-limit, AS_HELP_STRING([--with-parens-nest-limit=N], [nested parentheses limit (default=250)]), , with_parens_nest_limit=250) # Handle --with-heap-limit AC_ARG_WITH(heap-limit, AS_HELP_STRING([--with-heap-limit=N], [default limit on heap memory (kibibytes, default=20000000)]), , with_heap_limit=20000000) # Handle --with-match-limit=N AC_ARG_WITH(match-limit, AS_HELP_STRING([--with-match-limit=N], [default limit on internal looping (default=10000000)]), , with_match_limit=10000000) # Handle --with-match-limit-depth=N # Recognize old synonym --with-match-limit-recursion # # Note: In config.h, the default is to define MATCH_LIMIT_DEPTH symbolically as # MATCH_LIMIT, which in turn is defined to be some numeric value (e.g. # 10000000). MATCH_LIMIT_DEPTH can otherwise be set to some different numeric # value (or even the same numeric value as MATCH_LIMIT, though no longer # defined in terms of the latter). # AC_ARG_WITH(match-limit-depth, AS_HELP_STRING([--with-match-limit-depth=N], [default limit on match tree depth (default=MATCH_LIMIT)]), , with_match_limit_depth=MATCH_LIMIT) AC_ARG_WITH(match-limit-recursion,, , with_match_limit_recursion=UNSET) # Handle --enable-valgrind AC_ARG_ENABLE(valgrind, AS_HELP_STRING([--enable-valgrind], [enable valgrind support]), , enable_valgrind=no) # Enable code coverage reports using gcov AC_ARG_ENABLE(coverage, AS_HELP_STRING([--enable-coverage], [enable code coverage reports using gcov]), , enable_coverage=no) # Handle --enable-fuzz-support AC_ARG_ENABLE(fuzz_support, AS_HELP_STRING([--enable-fuzz-support], [enable fuzzer support]), , enable_fuzz_support=no) # Handle --enable-diff-fuzz-support AC_ARG_ENABLE(diff_fuzz_support, AS_HELP_STRING([--enable-diff-fuzz-support], [enable differential fuzzer support]), , enable_diff_fuzz_support=no) # Handle --disable-stack-for-recursion # This option became obsolete at release 10.30. AC_ARG_ENABLE(stack-for-recursion,, , enable_stack_for_recursion=yes) # Original code # AC_ARG_ENABLE(stack-for-recursion, # AS_HELP_STRING([--disable-stack-for-recursion], # [don't use stack recursion when matching]), # , enable_stack_for_recursion=yes) # Handle --disable-percent_zt (set as "auto" by default) AC_ARG_ENABLE(percent-zt, AS_HELP_STRING([--disable-percent-zt], [disable the use of z and t formatting modifiers]), , enable_percent_zt=auto) # Set the default value for pcre2-8 if test "x$enable_pcre2_8" = "xunset" then enable_pcre2_8=yes fi # Set the default value for pcre2-16 if test "x$enable_pcre2_16" = "xunset" then enable_pcre2_16=no fi # Set the default value for pcre2-32 if test "x$enable_pcre2_32" = "xunset" then enable_pcre2_32=no fi # Make sure at least one library is selected if test "x$enable_pcre2_8$enable_pcre2_16$enable_pcre2_32" = "xnonono" then AC_MSG_ERROR([At least one of the 8, 16 or 32 bit libraries must be enabled]) fi # Unicode is enabled by default. if test "x$enable_unicode" = "xunset" then enable_unicode=yes fi # Convert the newline identifier into the appropriate integer value. These must # agree with the PCRE2_NEWLINE_xxx values in pcre2.h. case "$enable_newline" in cr) ac_pcre2_newline_value=1 ;; lf) ac_pcre2_newline_value=2 ;; crlf) ac_pcre2_newline_value=3 ;; any) ac_pcre2_newline_value=4 ;; anycrlf) ac_pcre2_newline_value=5 ;; nul) ac_pcre2_newline_value=6 ;; *) AC_MSG_ERROR([invalid argument "$enable_newline" to --enable-newline option]) ;; esac # --enable-ebcdic-nl25 implies --enable-ebcdic if test "x$enable_ebcdic_nl25" = "xyes"; then enable_ebcdic=yes fi # Make sure that if enable_ebcdic is set, rebuild_chartables is also enabled. # Also check that UTF support is not requested, because PCRE2 cannot handle # EBCDIC and UTF in the same build. To do so it would need to use different # character constants depending on the mode. Also, EBCDIC cannot be used with # 16-bit and 32-bit libraries. # if test "x$enable_ebcdic" = "xyes"; then enable_rebuild_chartables=yes if test "x$enable_unicode" = "xyes"; then AC_MSG_ERROR([support for EBCDIC and Unicode cannot be enabled at the same time]) fi if test "x$enable_pcre2_16" = "xyes" -o "x$enable_pcre2_32" = "xyes"; then AC_MSG_ERROR([EBCDIC support is available only for the 8-bit library]) fi fi # Check argument to --with-link-size case "$with_link_size" in 2|3|4) ;; *) AC_MSG_ERROR([invalid argument "$with_link_size" to --with-link-size option]) ;; esac AH_TOP([ /* PCRE2 is written in Standard C, but there are a few non-standard things it can cope with, allowing it to run on SunOS4 and other "close to standard" systems. In environments that support the GNU autotools, config.h.in is converted into config.h by the "configure" script. In environments that use CMake, config-cmake.in is converted into config.h. If you are going to build PCRE2 "by hand" without using "configure" or CMake, you should copy the distributed config.h.generic to config.h, and edit the macro definitions to be the way you need them. You must then add -DHAVE_CONFIG_H to all of your compile commands, so that config.h is included at the start of every source. Alternatively, you can avoid editing by using -D on the compiler command line to set the macro values. In this case, you do not have to set -DHAVE_CONFIG_H, but if you do, default values will be taken from config.h for non-boolean macros that are not defined on the command line. Boolean macros such as HAVE_STDLIB_H and SUPPORT_PCRE2_8 should either be defined (conventionally to 1) for TRUE, and not defined at all for FALSE. All such macros are listed as a commented #undef in config.h.generic. Macros such as MATCH_LIMIT, whose actual value is relevant, have defaults defined, but are surrounded by #ifndef/#endif lines so that the value can be overridden by -D. PCRE2 uses memmove() if HAVE_MEMMOVE is defined; otherwise it uses bcopy() if HAVE_BCOPY is defined. If your system has neither bcopy() nor memmove(), make sure both macros are undefined; an emulation function will then be used. */]) # Checks for header files. AC_CHECK_HEADERS(limits.h sys/types.h sys/stat.h dirent.h) AC_CHECK_HEADERS([windows.h], [HAVE_WINDOWS_H=1]) AC_CHECK_HEADERS([sys/wait.h], [HAVE_SYS_WAIT_H=1]) # Conditional compilation AM_CONDITIONAL(WITH_PCRE2_8, test "x$enable_pcre2_8" = "xyes") AM_CONDITIONAL(WITH_PCRE2_16, test "x$enable_pcre2_16" = "xyes") AM_CONDITIONAL(WITH_PCRE2_32, test "x$enable_pcre2_32" = "xyes") AM_CONDITIONAL(WITH_DEBUG, test "x$enable_debug" = "xyes") AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes") AM_CONDITIONAL(WITH_JIT, test "x$enable_jit" = "xyes") AM_CONDITIONAL(WITH_UNICODE, test "x$enable_unicode" = "xyes") AM_CONDITIONAL(WITH_VALGRIND, test "x$enable_valgrind" = "xyes") AM_CONDITIONAL(WITH_FUZZ_SUPPORT, test "x$enable_fuzz_support" = "xyes") AM_CONDITIONAL(WITH_DIFF_FUZZ_SUPPORT, test "x$enable_diff_fuzz_support" = "xyes") if test "$enable_fuzz_support" = "yes" -a "$enable_pcre2_8" = "no"; then echo "** ERROR: Fuzzer support requires the 8-bit library" exit 1 fi if test "$enable_diff_fuzz_support" = "yes"; then if test "$enable_fuzz_support" = "no"; then echo "** ERROR: Differential fuzzing support requires fuzzing support" exit 1 fi if test "$enable_jit" = "no"; then echo "** ERROR: Differential fuzzing support requires Just-in-Time compilation support" exit 1 fi AC_DEFINE([SUPPORT_DIFF_FUZZ], [], [ Define to any value to enable differential fuzzing support.]) fi # Checks for typedefs, structures, and compiler characteristics. AC_C_CONST AC_TYPE_SIZE_T # Checks for library functions. AC_CHECK_FUNCS(bcopy memfd_create memmove mkostemp secure_getenv strerror) AC_MSG_CHECKING([for realpath]) AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include #include ]],[[ char buffer[PATH_MAX]; realpath(".", buffer); ]])], [AC_MSG_RESULT([yes]) AC_DEFINE([HAVE_REALPATH], 1, [Define to 1 if you have the `realpath' function.]) ], AC_MSG_RESULT([no])) # Check for the availability of libz (aka zlib) AC_CHECK_HEADERS([zlib.h], [HAVE_ZLIB_H=1]) AC_CHECK_LIB([z], [gzopen], [HAVE_LIBZ=1]) # Check for the availability of libbz2. Originally we just used AC_CHECK_LIB, # as for libz. However, this had the following problem, diagnosed and fixed by # a user: # # - libbz2 uses the Pascal calling convention (WINAPI) for the functions # under Win32. # - The standard autoconf AC_CHECK_LIB fails to include "bzlib.h", # therefore missing the function definition. # - The compiler thus generates a "C" signature for the test function. # - The linker fails to find the "C" function. # - PCRE2 fails to configure if asked to do so against libbz2. # # Solution: # # - Replace the AC_CHECK_LIB test with a custom test. AC_CHECK_HEADERS([bzlib.h], [HAVE_BZLIB_H=1]) # Original test # AC_CHECK_LIB([bz2], [BZ2_bzopen], [HAVE_LIBBZ2=1]) # # Custom test follows AC_MSG_CHECKING([for libbz2]) OLD_LIBS="$LIBS" LIBS="$LIBS -lbz2" AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #ifdef HAVE_BZLIB_H #include #endif]], [[return (int)BZ2_bzopen("conftest", "rb");]])], [AC_MSG_RESULT([yes]);HAVE_LIBBZ2=1; break;], AC_MSG_RESULT([no])) LIBS="$OLD_LIBS" # Check for the availabiity of libreadline if test "$enable_pcre2test_libreadline" = "yes"; then AC_CHECK_HEADERS([readline/readline.h], [HAVE_READLINE_H=1]) AC_CHECK_HEADERS([readline/history.h], [HAVE_HISTORY_H=1]) AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-lreadline"], [unset ac_cv_lib_readline_readline; AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-ltinfo"], [unset ac_cv_lib_readline_readline; AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-lcurses"], [unset ac_cv_lib_readline_readline; AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-lncurses"], [unset ac_cv_lib_readline_readline; AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-lncursesw"], [unset ac_cv_lib_readline_readline; AC_CHECK_LIB([readline], [readline], [LIBREADLINE="-ltermcap"], [LIBREADLINE=""], [-ltermcap])], [-lncursesw])], [-lncurses])], [-lcurses])], [-ltinfo])]) AC_SUBST(LIBREADLINE) if test -n "$LIBREADLINE"; then if test "$LIBREADLINE" != "-lreadline"; then echo "-lreadline needs $LIBREADLINE" LIBREADLINE="-lreadline $LIBREADLINE" fi fi fi # Check for the availability of libedit. Different distributions put its # headers in different places. Try to cover the most common ones. if test "$enable_pcre2test_libedit" = "yes"; then AC_CHECK_HEADERS([editline/readline.h edit/readline/readline.h readline.h], [ HAVE_LIBEDIT_HEADER=1 break ]) AC_CHECK_LIB([edit], [readline], [LIBEDIT="-ledit"]) fi PCRE2_STATIC_CFLAG="" if test "x$enable_shared" = "xno" ; then AC_DEFINE([PCRE2_STATIC], [1], [ Define to any value if linking statically (TODO: make nice with Libtool)]) PCRE2_STATIC_CFLAG="-DPCRE2_STATIC" fi AC_SUBST(PCRE2_STATIC_CFLAG) PCRE2POSIX_CFLAG="" if test "x$enable_shared" = "xyes" ; then PCRE2POSIX_CFLAG="-DPCRE2POSIX_SHARED" fi AC_SUBST(PCRE2POSIX_CFLAG) # Here is where PCRE2-specific defines are handled if test "$enable_pcre2_8" = "yes"; then AC_DEFINE([SUPPORT_PCRE2_8], [], [ Define to any value to enable the 8 bit PCRE2 library.]) fi if test "$enable_pcre2_16" = "yes"; then AC_DEFINE([SUPPORT_PCRE2_16], [], [ Define to any value to enable the 16 bit PCRE2 library.]) fi if test "$enable_pcre2_32" = "yes"; then AC_DEFINE([SUPPORT_PCRE2_32], [], [ Define to any value to enable the 32 bit PCRE2 library.]) fi if test "$enable_debug" = "yes"; then AC_DEFINE([PCRE2_DEBUG], [], [ Define to any value to include debugging code.]) fi if test "$enable_percent_zt" = "no"; then AC_DEFINE([DISABLE_PERCENT_ZT], [], [ Define to any value to disable the use of the z and t modifiers in formatting settings such as %zu or %td (this is rarely needed).]) else enable_percent_zt=auto fi # Unless running under Windows, JIT support requires pthreads. if test "$enable_jit" = "yes"; then if test "$HAVE_WINDOWS_H" != "1"; then AX_PTHREAD([], [AC_MSG_ERROR([JIT support requires pthreads])]) CC="$PTHREAD_CC" CFLAGS="$PTHREAD_CFLAGS $CFLAGS" LIBS="$PTHREAD_LIBS $LIBS" fi AC_DEFINE([SUPPORT_JIT], [], [ Define to any value to enable support for Just-In-Time compiling.]) else enable_pcre2grep_jit="no" fi if test "$enable_jit_sealloc" = "yes"; then AC_DEFINE([SLJIT_PROT_EXECUTABLE_ALLOCATOR], [1], [ Define to any non-zero number to enable support for SELinux compatible executable memory allocator in JIT. Note that this will have no effect unless SUPPORT_JIT is also defined.]) fi if test "$enable_pcre2grep_jit" = "yes"; then AC_DEFINE([SUPPORT_PCRE2GREP_JIT], [], [ Define to any value to enable JIT support in pcre2grep. Note that this will have no effect unless SUPPORT_JIT is also defined.]) fi if test "$enable_pcre2grep_callout" = "yes"; then if test "$enable_pcre2grep_callout_fork" = "yes"; then if test "$HAVE_WINDOWS_H" != "1"; then if test "$HAVE_SYS_WAIT_H" != "1"; then AC_MSG_ERROR([Callout script support needs sys/wait.h.]) fi fi AC_DEFINE([SUPPORT_PCRE2GREP_CALLOUT_FORK], [], [ Define to any value to enable fork support in pcre2grep callout scripts. This will have no effect unless SUPPORT_PCRE2GREP_CALLOUT is also defined.]) fi AC_DEFINE([SUPPORT_PCRE2GREP_CALLOUT], [], [ Define to any value to enable callout script support in pcre2grep.]) else enable_pcre2grep_callout_fork="no" fi if test "$enable_unicode" = "yes"; then AC_DEFINE([SUPPORT_UNICODE], [], [ Define to any value to enable support for Unicode and UTF encoding. This will work even in an EBCDIC environment, but it is incompatible with the EBCDIC macro. That is, PCRE2 can support *either* EBCDIC code *or* ASCII/Unicode, but not both at once.]) fi if test "$enable_pcre2grep_libz" = "yes"; then AC_DEFINE([SUPPORT_LIBZ], [], [ Define to any value to allow pcre2grep to be linked with libz, so that it is able to handle .gz files.]) fi if test "$enable_pcre2grep_libbz2" = "yes"; then AC_DEFINE([SUPPORT_LIBBZ2], [], [ Define to any value to allow pcre2grep to be linked with libbz2, so that it is able to handle .bz2 files.]) fi if test $with_pcre2grep_bufsize -lt 8192 ; then AC_MSG_WARN([$with_pcre2grep_bufsize is too small for --with-pcre2grep-bufsize; using 8192]) with_pcre2grep_bufsize="8192" else if test $? -gt 1 ; then AC_MSG_ERROR([Bad value for --with-pcre2grep-bufsize]) fi fi if test $with_pcre2grep_max_bufsize -lt $with_pcre2grep_bufsize ; then with_pcre2grep_max_bufsize="$with_pcre2grep_bufsize" else if test $? -gt 1 ; then AC_MSG_ERROR([Bad value for --with-pcre2grep-max-bufsize]) fi fi AC_DEFINE_UNQUOTED([PCRE2GREP_BUFSIZE], [$with_pcre2grep_bufsize], [ The value of PCRE2GREP_BUFSIZE is the starting size of the buffer used by pcre2grep to hold parts of the file it is searching. The buffer will be expanded up to PCRE2GREP_MAX_BUFSIZE if necessary, for files containing very long lines. The actual amount of memory used by pcre2grep is three times this number, because it allows for the buffering of "before" and "after" lines.]) AC_DEFINE_UNQUOTED([PCRE2GREP_MAX_BUFSIZE], [$with_pcre2grep_max_bufsize], [ The value of PCRE2GREP_MAX_BUFSIZE specifies the maximum size of the buffer used by pcre2grep to hold parts of the file it is searching. The actual amount of memory used by pcre2grep is three times this number, because it allows for the buffering of "before" and "after" lines.]) if test "$enable_pcre2test_libedit" = "yes"; then AC_DEFINE([SUPPORT_LIBEDIT], [], [ Define to any value to allow pcre2test to be linked with libedit.]) LIBREADLINE="$LIBEDIT" elif test "$enable_pcre2test_libreadline" = "yes"; then AC_DEFINE([SUPPORT_LIBREADLINE], [], [ Define to any value to allow pcre2test to be linked with libreadline.]) fi AC_DEFINE_UNQUOTED([NEWLINE_DEFAULT], [$ac_pcre2_newline_value], [ The value of NEWLINE_DEFAULT determines the default newline character sequence. PCRE2 client programs can override this by selecting other values at run time. The valid values are 1 (CR), 2 (LF), 3 (CRLF), 4 (ANY), 5 (ANYCRLF), and 6 (NUL).]) if test "$enable_bsr_anycrlf" = "yes"; then AC_DEFINE([BSR_ANYCRLF], [], [ By default, the \R escape sequence matches any Unicode line ending character or sequence of characters. If BSR_ANYCRLF is defined (to any value), this is changed so that backslash-R matches only CR, LF, or CRLF. The build-time default can be overridden by the user of PCRE2 at runtime.]) fi if test "$enable_never_backslash_C" = "yes"; then AC_DEFINE([NEVER_BACKSLASH_C], [], [ Defining NEVER_BACKSLASH_C locks out the use of \C in all patterns.]) fi AC_DEFINE_UNQUOTED([LINK_SIZE], [$with_link_size], [ The value of LINK_SIZE determines the number of bytes used to store links as offsets within the compiled regex. The default is 2, which allows for compiled patterns up to 65535 code units long. This covers the vast majority of cases. However, PCRE2 can also be compiled to use 3 or 4 bytes instead. This allows for longer patterns in extreme cases.]) AC_DEFINE_UNQUOTED([MAX_VARLOOKBEHIND], [$with_max_varlookbehind], [ The value of MAX_VARLOOKBEHIND specifies the default maximum length, in characters, for a variable-length lookbehind assertion.]) AC_DEFINE_UNQUOTED([PARENS_NEST_LIMIT], [$with_parens_nest_limit], [ The value of PARENS_NEST_LIMIT specifies the maximum depth of nested parentheses (of any kind) in a pattern. This limits the amount of system stack that is used while compiling a pattern.]) AC_DEFINE_UNQUOTED([MATCH_LIMIT], [$with_match_limit], [ The value of MATCH_LIMIT determines the default number of times the pcre2_match() function can record a backtrack position during a single matching attempt. The value is also used to limit a loop counter in pcre2_dfa_match(). There is a runtime interface for setting a different limit. The limit exists in order to catch runaway regular expressions that take forever to determine that they do not match. The default is set very large so that it does not accidentally catch legitimate cases.]) # --with-match-limit-recursion is an obsolete synonym for --with-match-limit-depth if test "$with_match_limit_recursion" != "UNSET"; then cat <