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Diffstat (limited to 'pcre2-10.21/configure.ac')
-rw-r--r-- | pcre2-10.21/configure.ac | 927 |
1 files changed, 927 insertions, 0 deletions
diff --git a/pcre2-10.21/configure.ac b/pcre2-10.21/configure.ac new file mode 100644 index 00000000..32307644 --- /dev/null +++ b/pcre2-10.21/configure.ac @@ -0,0 +1,927 @@ +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, [21]) +m4_define(pcre2_prerelease, []) +m4_define(pcre2_date, [2016-01-12]) + +# 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. + +# Libtool shared library interface versions (current:revision:age) +m4_define(libpcre2_8_version, [3:0:3]) +m4_define(libpcre2_16_version, [3:0:3]) +m4_define(libpcre2_32_version, [3:0:3]) +m4_define(libpcre2_posix_version, [0:1:0]) + +AC_PREREQ(2.57) +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) + +# FISH PATCH +# Enable maintainer mode to avoid spurious rebuilds due to timestamps in git +# not being stored. Discussion in https://github.com/fish-shell/fish-shell/issues/2469 +AM_MAINTAINER_MODE +# END FISH PATCH + +# This is a new thing required to stop a warning from automake 1.12 +m4_ifdef([AM_PROG_AR], [AM_PROG_AR]) + +# 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="$CFLAGS" + +AC_PROG_CC +AM_PROG_CC_C_O + +if test "x$remember_set_CFLAGS" = "x" +then + if test "$CFLAGS" = "-g -O2" + then + CFLAGS="-O2" + elif test "$CFLAGS" = "-g" + then + CFLAGS="" + fi +fi + +# Check for a 64-bit integer type +AC_TYPE_INT64_T + +AC_PROG_INSTALL +AC_LIBTOOL_WIN32_DLL +LT_INIT +AC_PROG_LN_S + +# Check for GCC visibility feature + +PCRE2_VISIBILITY + +# 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 --dnable-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) + +# 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 --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) +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 --disable-stack-for-recursion +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 --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 buffer size (default=20480, minimum=8192)]), + , with_pcre2grep_bufsize=20480) + +# 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-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-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_recursion=N +# +# Note: In config.h, the default is to define MATCH_LIMIT_RECURSION +# symbolically as MATCH_LIMIT, which in turn is defined to be some numeric +# value (e.g. 10000000). MATCH_LIMIT_RECURSION 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-recursion, + AS_HELP_STRING([--with-match-limit-recursion=N], + [default limit on internal recursion (default=MATCH_LIMIT)]), + , with_match_limit_recursion=MATCH_LIMIT) + +# Handle --enable-valgrind +AC_ARG_ENABLE(valgrind, + AS_HELP_STRING([--enable-valgrind], + [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) + +# 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 ;; + *) + 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_HEADER_STDC +AC_CHECK_HEADERS(limits.h sys/types.h sys/stat.h dirent.h) +AC_CHECK_HEADERS([windows.h], [HAVE_WINDOWS_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") + +# Checks for typedefs, structures, and compiler characteristics. + +AC_C_CONST +AC_TYPE_SIZE_T + +# Checks for library functions. + +AC_CHECK_FUNCS(bcopy memmove strerror) + +# 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 <bzlib.h> +#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], [HAVE_EDITLINE_READLINE_H=1], + [AC_CHECK_HEADERS([edit/readline/readline.h], [HAVE_READLINE_READLINE_H=1], + [AC_CHECK_HEADERS([readline/readline.h], [HAVE_READLINE_READLINE_H=1])])]) + AC_CHECK_LIB([edit], [readline], [LIBEDIT="-ledit"]) +fi + +# This facilitates -ansi builds under Linux +dnl AC_DEFINE([_GNU_SOURCE], [], [Enable GNU extensions in glibc]) + +PCRE2_STATIC_CFLAG="" +if test "x$enable_shared" = "xno" ; then + AC_DEFINE([PCRE2_STATIC], [1], [ + Define to any value if linking statically (TODO: make nice with Libtool)]) + PCRE2_STATIC_CFLAG="-DPCRE2_STATIC" +fi +AC_SUBST(PCRE2_STATIC_CFLAG) + +# Here is where PCRE2-specific defines are handled + +if test "$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 "$enable_debug" = "yes"; then + AC_DEFINE([PCRE2_DEBUG], [], [ + Define to any value to include debugging code.]) +fi + +# Unless running under Windows, JIT support requires pthreads. + +if test "$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_pcre2grep_jit" = "yes"; then + AC_DEFINE([SUPPORT_PCRE2GREP_JIT], [], [ + Define to any value to enable JIT support in pcre2grep.]) +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_stack_for_recursion" = "no"; then + AC_DEFINE([HEAP_MATCH_RECURSE], [], [ + PCRE2 uses recursive function calls to handle backtracking while + matching. This can sometimes be a problem on systems that have + stacks of limited size. Define HEAP_MATCH_RECURSE to any value to get a + version that doesn't use recursion in the match() function; instead + it creates its own stack by steam using memory from the heap. For more + detail, see the comments and other stuff just above the match() function.]) +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 $? -gt 1 ; then + AC_MSG_ERROR([Bad value for --with-pcre2grep-bufsize]) + fi +fi + +AC_DEFINE_UNQUOTED([PCRE2GREP_BUFSIZE], [$with_pcre2grep_bufsize], [ + The value of PCRE2GREP_BUFSIZE determines the size of buffer used by pcre2grep + to hold parts of the file it is searching. This is also the minimum value. + 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), + and 5 (ANYCRLF).]) + +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], [$with_link_size], [ + The value of LINK_SIZE determines the number of bytes used to store + links as offsets within the compiled regex. The default is 2, which + allows for compiled patterns up to 64K long. This covers the vast + majority of cases. However, PCRE2 can also be compiled to use 3 or 4 + bytes instead. This allows for longer patterns in extreme cases.]) + +AC_DEFINE_UNQUOTED([PARENS_NEST_LIMIT], [$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], [$with_match_limit], [ + The value of MATCH_LIMIT determines the default number of times the + internal match() function can be called during a single execution of + pcre2_match(). There is a runtime interface for setting a different + limit. The limit exists in order to catch runaway regular + expressions that take for ever to determine that they do not match. + The default is set very large so that it does not accidentally catch + legitimate cases.]) + +AC_DEFINE_UNQUOTED([MATCH_LIMIT_RECURSION], [$with_match_limit_recursion], [ + The above limit applies to all calls of match(), whether or not they + increase the recursion depth. In some environments it is desirable + to limit the depth of recursive calls of match() more strictly, in + order to restrict the maximum amount of stack (or heap, if + HEAP_MATCH_RECURSE is defined) that is used. The value of + MATCH_LIMIT_RECURSION applies only to recursive calls of match(). To + have any useful effect, it must be less than the value of + MATCH_LIMIT. The default is to use the same value as MATCH_LIMIT. + There is a runtime method for setting a different limit.]) + +AC_DEFINE([MAX_NAME_SIZE], [32], [ + This limit is parameterized just in case anybody ever wants to + change it. Care must be taken if it is increased, because it guards + against integer overflow caused by enormously large patterns.]) + +AC_DEFINE([MAX_NAME_COUNT], [10000], [ + This limit is parameterized just in case anybody ever wants to + change it. Care must be taken if it is increased, because it guards + against integer overflow caused by enormously large patterns.]) + +AH_VERBATIM([PCRE2_EXP_DEFN], [ +/* If you are compiling for a system other than a Unix-like system or + Win32, and it needs some magic to be inserted before the definition + of a function that is exported by the library, define this macro to + contain the relevant magic. If you do not define this macro, a suitable + __declspec value is used for Windows systems; in other environments + "extern" is used for a C compiler and "extern C" for a C++ compiler. + This macro apears at the start of every exported function that is part + of the external API. It does not appear on functions that are "external" + in the C sense, but which are internal to the library. */ +#undef PCRE2_EXP_DEFN]) + +if test "$enable_ebcdic" = "yes"; then + AC_DEFINE_UNQUOTED([EBCDIC], [], [ + If you are compiling for a system that uses EBCDIC instead of ASCII + character codes, define this macro to any value. When EBCDIC is set, PCRE2 + assumes that all input strings are in EBCDIC. If you do not define this + macro, PCRE2 will assume input strings are ASCII or UTF-8/16/32 Unicode. It + is not possible to build a version of PCRE2 that supports both EBCDIC and + UTF-8/16/32.]) +fi + +if test "$enable_ebcdic_nl25" = "yes"; then + AC_DEFINE_UNQUOTED([EBCDIC_NL25], [], [ + In an EBCDIC environment, define this macro to any value to arrange for + the NL character to be 0x25 instead of the default 0x15. NL plays the role + that LF does in an ASCII/Unicode environment.]) +fi + +if test "$enable_valgrind" = "yes"; then + AC_DEFINE_UNQUOTED([SUPPORT_VALGRIND], [], [ + Define to any value for valgrind support to find invalid memory reads.]) +fi + +# Platform specific issues +NO_UNDEFINED= +EXPORT_ALL_SYMBOLS= +case $host_os in + cygwin* | mingw* ) + if test X"$enable_shared" = Xyes; then + NO_UNDEFINED="-no-undefined" + EXPORT_ALL_SYMBOLS="-Wl,--export-all-symbols" + fi + ;; +esac + +# The extra LDFLAGS for each particular library. The libpcre2*_version values +# are m4 variables, assigned above. + +EXTRA_LIBPCRE2_8_LDFLAGS="$EXTRA_LIBPCRE2_8_LDFLAGS \ + $NO_UNDEFINED -version-info libpcre2_8_version" + +EXTRA_LIBPCRE2_16_LDFLAGS="$EXTRA_LIBPCRE2_16_LDFLAGS \ + $NO_UNDEFINED -version-info libpcre2_16_version" + +EXTRA_LIBPCRE2_32_LDFLAGS="$EXTRA_LIBPCRE2_32_LDFLAGS \ + $NO_UNDEFINED -version-info libpcre2_32_version" + +EXTRA_LIBPCRE2_POSIX_LDFLAGS="$EXTRA_LIBPCRE2_POSIX_LDFLAGS \ + $NO_UNDEFINED -version-info libpcre2_posix_version" + +AC_SUBST(EXTRA_LIBPCRE2_8_LDFLAGS) +AC_SUBST(EXTRA_LIBPCRE2_16_LDFLAGS) +AC_SUBST(EXTRA_LIBPCRE2_32_LDFLAGS) +AC_SUBST(EXTRA_LIBPCRE2_POSIX_LDFLAGS) + +# When we run 'make distcheck', use these arguments. Turning off compiler +# optimization makes it run faster. +DISTCHECK_CONFIGURE_FLAGS="CFLAGS='' CXXFLAGS='' --enable-pcre2-16 --enable-pcre2-32 --enable-jit --enable-utf" +AC_SUBST(DISTCHECK_CONFIGURE_FLAGS) + +# Check that, if --enable-pcre2grep-libz or --enable-pcre2grep-libbz2 is +# specified, the relevant library is available. + +if test "$enable_pcre2grep_libz" = "yes"; then + if test "$HAVE_ZLIB_H" != "1"; then + echo "** Cannot --enable-pcre2grep-libz because zlib.h was not found" + exit 1 + fi + if test "$HAVE_LIBZ" != "1"; then + echo "** Cannot --enable-pcre2grep-libz because libz was not found" + exit 1 + fi + LIBZ="-lz" +fi +AC_SUBST(LIBZ) + +if test "$enable_pcre2grep_libbz2" = "yes"; then + if test "$HAVE_BZLIB_H" != "1"; then + echo "** Cannot --enable-pcre2grep-libbz2 because bzlib.h was not found" + exit 1 + fi + if test "$HAVE_LIBBZ2" != "1"; then + echo "** Cannot --enable-pcre2grep-libbz2 because libbz2 was not found" + exit 1 + fi + LIBBZ2="-lbz2" +fi +AC_SUBST(LIBBZ2) + +# Similarly for --enable-pcre2test-readline + +if test "$enable_pcre2test_libedit" = "yes"; then + if test "$enable_pcre2test_libreadline" = "yes"; then + echo "** Cannot use both --enable-pcre2test-libedit and --enable-pcre2test-readline" + exit 1 + fi + if test "$HAVE_EDITLINE_READLINE_H" != "1" -a \ + "$HAVE_READLINE_READLINE_H" != "1"; then + echo "** Cannot --enable-pcre2test-libedit because neither editline/readline.h" + echo "** nor readline/readline.h was found." + exit 1 + fi + if test -z "$LIBEDIT"; then + echo "** Cannot --enable-pcre2test-libedit because libedit library was not found." + exit 1 + fi +fi + +if test "$enable_pcre2test_libreadline" = "yes"; then + if test "$HAVE_READLINE_H" != "1"; then + echo "** Cannot --enable-pcre2test-readline because readline/readline.h was not found." + exit 1 + fi + if test "$HAVE_HISTORY_H" != "1"; then + echo "** Cannot --enable-pcre2test-readline because readline/history.h was not found." + exit 1 + fi + if test -z "$LIBREADLINE"; then + echo "** Cannot --enable-pcre2test-readline because readline library was not found." + exit 1 + fi +fi + +# Handle valgrind support + +if test "$enable_valgrind" = "yes"; then + m4_ifdef([PKG_CHECK_MODULES], + [PKG_CHECK_MODULES([VALGRIND],[valgrind])], + [AC_MSG_ERROR([pkg-config not supported])]) +fi + +# Handle code coverage reporting support +if test "$enable_coverage" = "yes"; then + if test "x$GCC" != "xyes"; then + AC_MSG_ERROR([Code coverage reports can only be generated when using GCC]) + fi + + # ccache is incompatible with gcov + AC_PATH_PROG([SHTOOL],[shtool],[false]) + case `$SHTOOL path $CC` in + *ccache*) cc_ccache=yes;; + *) cc_ccache=no;; + esac + + if test "$cc_ccache" = "yes"; then + if test -z "$CCACHE_DISABLE" -o "$CCACHE_DISABLE" != "1"; then + AC_MSG_ERROR([must export CCACHE_DISABLE=1 to disable ccache for code coverage]) + fi + fi + + AC_ARG_VAR([LCOV],[the ltp lcov program]) + AC_PATH_PROG([LCOV],[lcov],[false]) + if test "x$LCOV" = "xfalse"; then + AC_MSG_ERROR([lcov not found]) + fi + + AC_ARG_VAR([GENHTML],[the ltp genhtml program]) + AC_PATH_PROG([GENHTML],[genhtml],[false]) + if test "x$GENHTML" = "xfalse"; then + AC_MSG_ERROR([genhtml not found]) + fi + + # Set flags needed for gcov + GCOV_CFLAGS="-O0 -ggdb3 -fprofile-arcs -ftest-coverage" + GCOV_CXXFLAGS="-O0 -ggdb3 -fprofile-arcs -ftest-coverage" + GCOV_LIBS="-lgcov" + AC_SUBST([GCOV_CFLAGS]) + AC_SUBST([GCOV_CXXFLAGS]) + AC_SUBST([GCOV_LIBS]) +fi # enable_coverage + +AM_CONDITIONAL([WITH_GCOV],[test "x$enable_coverage" = "xyes"]) + +# Produce these files, in addition to config.h. +AC_CONFIG_FILES( + Makefile + libpcre2-8.pc + libpcre2-16.pc + libpcre2-32.pc + libpcre2-posix.pc + pcre2-config + src/pcre2.h +) + +# Make the generated script files executable. +AC_CONFIG_COMMANDS([script-chmod], [chmod a+x pcre2-config]) + +# Make sure that pcre2_chartables.c is removed in case the method for +# creating it was changed by reconfiguration. +AC_CONFIG_COMMANDS([delete-old-chartables], [rm -f pcre2_chartables.c]) + +AC_OUTPUT + +# Print out a nice little message after configure is run displaying the +# chosen options. + +ebcdic_nl_code=n/a +if test "$enable_ebcdic_nl25" = "yes"; then + ebcdic_nl_code=0x25 +elif test "$enable_ebcdic" = "yes"; then + ebcdic_nl_code=0x15 +fi + +cat <<EOF + +$PACKAGE-$VERSION configuration summary: + + Install prefix .................. : ${prefix} + C preprocessor .................. : ${CPP} + C compiler ...................... : ${CC} + Linker .......................... : ${LD} + C preprocessor flags ............ : ${CPPFLAGS} + C compiler flags ................ : ${CFLAGS} ${VISIBILITY_CFLAGS} + Linker flags .................... : ${LDFLAGS} + Extra libraries ................. : ${LIBS} + + Build 8-bit pcre2 library ....... : ${enable_pcre2_8} + Build 16-bit pcre2 library ...... : ${enable_pcre2_16} + Build 32-bit pcre2 library ...... : ${enable_pcre2_32} + Include debugging code .......... : ${enable_debug} + Enable JIT compiling support .... : ${enable_jit} + Enable Unicode support .......... : ${enable_unicode} + Newline char/sequence ........... : ${enable_newline} + \R matches only ANYCRLF ......... : ${enable_bsr_anycrlf} + \C is disabled .................. : ${enable_never_backslash_C} + EBCDIC coding ................... : ${enable_ebcdic} + EBCDIC code for NL .............. : ${ebcdic_nl_code} + Rebuild char tables ............. : ${enable_rebuild_chartables} + Use stack recursion ............. : ${enable_stack_for_recursion} + Internal link size .............. : ${with_link_size} + Nested parentheses limit ........ : ${with_parens_nest_limit} + Match limit ..................... : ${with_match_limit} + Match limit recursion ........... : ${with_match_limit_recursion} + Build shared libs ............... : ${enable_shared} + Build static libs ............... : ${enable_static} + Use JIT in pcre2grep ............ : ${enable_pcre2grep_jit} + Buffer size for pcre2grep ....... : ${with_pcre2grep_bufsize} + Link pcre2grep with libz ........ : ${enable_pcre2grep_libz} + Link pcre2grep with libbz2 ...... : ${enable_pcre2grep_libbz2} + Link pcre2test with libedit ..... : ${enable_pcre2test_libedit} + Link pcre2test with libreadline . : ${enable_pcre2test_libreadline} + Valgrind support ................ : ${enable_valgrind} + Code coverage ................... : ${enable_coverage} + +EOF + +dnl end configure.ac |