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			1130 lines
		
	
	
		
			41 KiB
		
	
	
	
		
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			1130 lines
		
	
	
		
			41 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
| 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, [42])
 | |
| m4_define(pcre2_prerelease, [])
 | |
| m4_define(pcre2_date, [2022-12-11])
 | |
| 
 | |
| # Libtool shared library interface versions (current:revision:age)
 | |
| m4_define(libpcre2_8_version,     [11:2:11])
 | |
| m4_define(libpcre2_16_version,    [11:2:11])
 | |
| m4_define(libpcre2_32_version,    [11:2:11])
 | |
| m4_define(libpcre2_posix_version, [3:4:0])
 | |
| 
 | |
| # 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([2.60])
 | |
| 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="$CFLAGS"
 | |
| 
 | |
| AC_PROG_CC
 | |
| AM_PROG_CC_C_O
 | |
| AC_USE_SYSTEM_EXTENSIONS
 | |
| 
 | |
| if test "x$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 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/sljitConfigInternal.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-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 --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$enable_fuzz_support" = "xyes")
 | |
| 
 | |
| if test "$enable_fuzz_support" = "yes" -a "$enable_pcre2_8" = "no"; then
 | |
|   echo "** ERROR: Fuzzer support requires the 8-bit library"
 | |
|   exit 1
 | |
| fi
 | |
| 
 | |
| # Checks for typedefs, structures, and compiler characteristics.
 | |
| 
 | |
| AC_C_CONST
 | |
| AC_TYPE_SIZE_T
 | |
| 
 | |
| # Checks for library functions.
 | |
| 
 | |
| AC_CHECK_FUNCS(bcopy memfd_create memmove mkostemp secure_getenv strerror)
 | |
| AC_MSG_CHECKING([for realpath])
 | |
| AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 | |
| #include <stdlib.h>
 | |
| #include <limits.h>
 | |
| ]],[[
 | |
| char buffer[PATH_MAX];
 | |
| realpath(".", buffer);
 | |
| ]])],
 | |
| [AC_MSG_RESULT([yes])
 | |
|  AC_DEFINE([HAVE_REALPATH], 1,
 | |
|   [Define to 1 if you have the `realpath' function.])
 | |
| ],
 | |
| AC_MSG_RESULT([no]))
 | |
| 
 | |
| # Check for the availability of libz (aka zlib)
 | |
| 
 | |
| AC_CHECK_HEADERS([zlib.h], [HAVE_ZLIB_H=1])
 | |
| AC_CHECK_LIB([z], [gzopen], [HAVE_LIBZ=1])
 | |
| 
 | |
| # Check for the availability of libbz2. Originally we just used AC_CHECK_LIB,
 | |
| # as for libz. However, this had the following problem, diagnosed and fixed by
 | |
| # a user:
 | |
| #
 | |
| #   - libbz2 uses the Pascal calling convention (WINAPI) for the functions
 | |
| #     under Win32.
 | |
| #   - The standard autoconf AC_CHECK_LIB fails to include "bzlib.h",
 | |
| #     therefore missing the function definition.
 | |
| #   - The compiler thus generates a "C" signature for the test function.
 | |
| #   - The linker fails to find the "C" function.
 | |
| #   - PCRE2 fails to configure if asked to do so against libbz2.
 | |
| #
 | |
| # Solution:
 | |
| #
 | |
| #   - Replace the AC_CHECK_LIB test with a custom test.
 | |
| 
 | |
| AC_CHECK_HEADERS([bzlib.h], [HAVE_BZLIB_H=1])
 | |
| # Original test
 | |
| # AC_CHECK_LIB([bz2], [BZ2_bzopen], [HAVE_LIBBZ2=1])
 | |
| #
 | |
| # Custom test follows
 | |
| 
 | |
| AC_MSG_CHECKING([for libbz2])
 | |
| OLD_LIBS="$LIBS"
 | |
| LIBS="$LIBS -lbz2"
 | |
| AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 | |
| #ifdef HAVE_BZLIB_H
 | |
| #include <bzlib.h>
 | |
| #endif]],
 | |
| [[return (int)BZ2_bzopen("conftest", "rb");]])],
 | |
| [AC_MSG_RESULT([yes]);HAVE_LIBBZ2=1; break;],
 | |
| AC_MSG_RESULT([no]))
 | |
| LIBS="$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 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$enable_shared" = "xno" ; then
 | |
|   AC_DEFINE([PCRE2_STATIC], [1], [
 | |
|     Define to any value if linking statically (TODO: make nice with Libtool)])
 | |
|   PCRE2_STATIC_CFLAG="-DPCRE2_STATIC"
 | |
| fi
 | |
| AC_SUBST(PCRE2_STATIC_CFLAG)
 | |
| 
 | |
| # Here is where PCRE2-specific defines are handled
 | |
| 
 | |
| if test "$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([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 for ever 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 "$with_match_limit_recursion" != "UNSET"; then
 | |
| cat <<EOF
 | |
| 
 | |
| WARNING: --with-match-limit-recursion is an obsolete option. Please use
 | |
|   --with-match-limit-depth in future. If both are set, --with-match-limit-depth
 | |
|   will be used. See also --with-heap-limit.
 | |
| 
 | |
| EOF
 | |
| if test "$with_match_limit_depth" = "MATCH_LIMIT"; then
 | |
|   with_match_limit_depth=$with_match_limit_recursion
 | |
| fi
 | |
| fi
 | |
| 
 | |
| AC_DEFINE_UNQUOTED([MATCH_LIMIT_DEPTH], [$with_match_limit_depth], [
 | |
|   The above limit applies to all backtracks, whether or not they are nested. In
 | |
|   some environments it is desirable to limit the nesting of backtracking (that
 | |
|   is, the depth of tree that is searched) more strictly, in order to restrict
 | |
|   the maximum amount of heap memory that is used. The value of
 | |
|   MATCH_LIMIT_DEPTH provides this facility. 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. In
 | |
|   the case of pcre2_dfa_match(), this limit controls the depth of the internal
 | |
|   nested function calls that are used for pattern recursions, lookarounds, and
 | |
|   atomic groups.])
 | |
| 
 | |
| AC_DEFINE_UNQUOTED([HEAP_LIMIT], [$with_heap_limit], [
 | |
|   This limits the amount of memory that may be used while matching
 | |
|   a pattern. It applies to both pcre2_match() and pcre2_dfa_match(). It does
 | |
|   not apply to JIT matching. The value is in kibibytes (units of 1024 bytes).])
 | |
| 
 | |
| AC_DEFINE([MAX_NAME_SIZE], [32], [
 | |
|   This limit is parameterized just in case anybody ever wants to
 | |
|   change it. Care must be taken if it is increased, because it guards
 | |
|   against integer overflow caused by enormously large patterns.])
 | |
| 
 | |
| AC_DEFINE([MAX_NAME_COUNT], [10000], [
 | |
|   This limit is parameterized just in case anybody ever wants to
 | |
|   change it. Care must be taken if it is increased, because it guards
 | |
|   against integer overflow caused by enormously large patterns.])
 | |
| 
 | |
| AH_VERBATIM([PCRE2_EXP_DEFN], [
 | |
| /* If you are compiling for a system other than a Unix-like system or
 | |
|    Win32, and it needs some magic to be inserted before the definition
 | |
|    of a function that is exported by the library, define this macro to
 | |
|    contain the relevant magic. If you do not define this macro, a suitable
 | |
|     __declspec value is used for Windows systems; in other environments
 | |
|    "extern" is used for a C compiler and "extern C" for a C++ compiler.
 | |
|    This macro apears at the start of every exported function that is part
 | |
|    of the external API. It does not appear on functions that are "external"
 | |
|    in the C sense, but which are internal to the library. */
 | |
| #undef PCRE2_EXP_DEFN])
 | |
| 
 | |
| if test "$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 \
 | |
|   $NO_UNDEFINED -version-info libpcre2_posix_version"
 | |
| 
 | |
| AC_SUBST(EXTRA_LIBPCRE2_8_LDFLAGS)
 | |
| AC_SUBST(EXTRA_LIBPCRE2_16_LDFLAGS)
 | |
| AC_SUBST(EXTRA_LIBPCRE2_32_LDFLAGS)
 | |
| AC_SUBST(EXTRA_LIBPCRE2_POSIX_LDFLAGS)
 | |
| 
 | |
| # When we run 'make distcheck', use these arguments. Turning off compiler
 | |
| # optimization makes it run faster.
 | |
| DISTCHECK_CONFIGURE_FLAGS="CFLAGS='' CXXFLAGS='' --enable-pcre2-16 --enable-pcre2-32 --enable-jit"
 | |
| AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
 | |
| 
 | |
| # Check that, if --enable-pcre2grep-libz or --enable-pcre2grep-libbz2 is
 | |
| # specified, the relevant library is available.
 | |
| 
 | |
| if test "$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 "$enable_pcre2test_libreadline" = "yes"; then
 | |
|     echo "** Cannot use both --enable-pcre2test-libedit and --enable-pcre2test-readline"
 | |
|     exit 1
 | |
|   fi
 | |
|   if test -z "$HAVE_LIBEDIT_HEADER"; then
 | |
|     echo "** Cannot --enable-pcre2test-libedit because neither editline/readline.h,"
 | |
|     echo "** edit/readline/readline.h nor a compatible header 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$enable_coverage" = "xyes"])
 | |
| 
 | |
| AC_MSG_CHECKING([whether Intel CET is enabled])
 | |
| AC_LANG_PUSH([C])
 | |
| AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,
 | |
|                    [[#ifndef __CET__
 | |
| # error CET is not enabled
 | |
| #endif]])],
 | |
|                    [pcre2_cc_cv_intel_cet_enabled=yes],
 | |
|                    [pcre2_cc_cv_intel_cet_enabled=no])
 | |
| AC_MSG_RESULT([$pcre2_cc_cv_intel_cet_enabled])
 | |
| if test "$pcre2_cc_cv_intel_cet_enabled" = yes; then
 | |
|   CET_CFLAGS="-mshstk"
 | |
|   AC_SUBST([CET_CFLAGS])
 | |
| fi
 | |
| AC_LANG_POP([C])
 | |
| 
 | |
| # LIB_POSTFIX is used by CMakeLists.txt for Windows debug builds.
 | |
| # Pass empty LIB_POSTFIX to *.pc files and pcre2-config here.
 | |
| AC_SUBST(LIB_POSTFIX)
 | |
| 
 | |
| # Produce these files, in addition to config.h.
 | |
| 
 | |
| AC_CONFIG_FILES(
 | |
| 	Makefile
 | |
| 	libpcre2-8.pc
 | |
| 	libpcre2-16.pc
 | |
| 	libpcre2-32.pc
 | |
| 	libpcre2-posix.pc
 | |
| 	pcre2-config
 | |
| 	src/pcre2.h
 | |
| )
 | |
| 
 | |
| # Make the generated script files executable.
 | |
| AC_CONFIG_COMMANDS([script-chmod], [chmod a+x pcre2-config])
 | |
| 
 | |
| # Make sure that pcre2_chartables.c is removed in case the method for
 | |
| # creating it was changed by reconfiguration.
 | |
| AC_CONFIG_COMMANDS([delete-old-chartables], [rm -f pcre2_chartables.c])
 | |
| 
 | |
| AC_OUTPUT
 | |
| 
 | |
| # --disable-stack-for-recursion is obsolete and has no effect.
 | |
| 
 | |
| if test "$enable_stack_for_recursion" = "no"; then
 | |
| cat <<EOF
 | |
| 
 | |
| WARNING: --disable-stack-for-recursion is obsolete and has no effect.
 | |
| EOF
 | |
| fi
 | |
| 
 | |
| # 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}
 | |
|     Use SELinux allocator in JIT ....... : ${enable_jit_sealloc}
 | |
|     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}
 | |
|     Internal link size ................. : ${with_link_size}
 | |
|     Nested parentheses limit ........... : ${with_parens_nest_limit}
 | |
|     Heap limit ......................... : ${with_heap_limit} kibibytes
 | |
|     Match limit ........................ : ${with_match_limit}
 | |
|     Match depth limit .................. : ${with_match_limit_depth}
 | |
|     Build shared libs .................. : ${enable_shared}
 | |
|     Build static libs .................. : ${enable_static}
 | |
|     Use JIT in pcre2grep ............... : ${enable_pcre2grep_jit}
 | |
|     Enable callouts in pcre2grep ....... : ${enable_pcre2grep_callout}
 | |
|     Enable fork in pcre2grep callouts .. : ${enable_pcre2grep_callout_fork}
 | |
|     Initial buffer size for pcre2grep .. : ${with_pcre2grep_bufsize}
 | |
|     Maximum buffer size for pcre2grep .. : ${with_pcre2grep_max_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}
 | |
|     Fuzzer support ..................... : ${enable_fuzz_support}
 | |
|     Use %zu and %td .................... : ${enable_percent_zt}
 | |
| 
 | |
| EOF
 | |
| 
 | |
| dnl end configure.ac
 |