pcre/configure.ac

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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 PCRE user writes code that uses PCRE_MINOR as a number. There is now
dnl a check further down that throws an error if 08 or 09 are used.
dnl The PCRE_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, [9])
m4_define(pcre2_minor, [00])
m4_define(pcre2_prerelease, [-DEV])
m4_define(pcre2_date, [2014-99-99])
# 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, [0:0:0])
m4_define(libpcre2-16_version, [0:0:0])
m4_define(libpcre2-32_version, [0:0:0])
m4_define(libpcre2posix_version, [0:0:0])
AC_PREREQ(2.57)
AC_INIT(PCRE2, pcre2_major.pcre2_minor[]pcre2_prerelease, , pcre2)
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AC_CONFIG_SRCDIR([src/pcre2.h.in])
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AM_INIT_AUTOMAKE([dist-bzip2 dist-zip])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
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AC_CONFIG_HEADERS(src/config.h)
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# 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])
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# 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
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# 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
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PCRE2_VISIBILITY
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# 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. ***"
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echo "*** Use only 00 to 07 or 10 onwards, to avoid octal issues. ***"
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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
# Handle --disable-pcre8 (enabled by default)
AC_ARG_ENABLE(pcre8,
AS_HELP_STRING([--disable-pcre8],
[disable 8 bit character support]),
, enable_pcre8=unset)
AC_SUBST(enable_pcre8)
# Handle --enable-pcre16 (disabled by default)
AC_ARG_ENABLE(pcre16,
AS_HELP_STRING([--enable-pcre16],
[enable 16 bit character support]),
, enable_pcre16=unset)
AC_SUBST(enable_pcre16)
# Handle --enable-pcre32 (disabled by default)
AC_ARG_ENABLE(pcre32,
AS_HELP_STRING([--enable-pcre32],
[enable 32 bit character support]),
, enable_pcre32=unset)
AC_SUBST(enable_pcre32)
# 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-pcregrep-jit (enabled by default)
AC_ARG_ENABLE(pcregrep-jit,
AS_HELP_STRING([--disable-pcregrep-jit],
[disable JIT support in pcregrep]),
, enable_pcregrep_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 --enable-utf (disabled by default)
AC_ARG_ENABLE(utf,
AS_HELP_STRING([--enable-utf],
[enable UTF-8/16/32 support (incompatible with --enable-ebcdic)]),
, enable_utf=unset)
# Handle newline options
ac_pcre_newline=lf
AC_ARG_ENABLE(newline-is-cr,
AS_HELP_STRING([--enable-newline-is-cr],
[use CR as newline character]),
ac_pcre_newline=cr)
AC_ARG_ENABLE(newline-is-lf,
AS_HELP_STRING([--enable-newline-is-lf],
[use LF as newline character (default)]),
ac_pcre_newline=lf)
AC_ARG_ENABLE(newline-is-crlf,
AS_HELP_STRING([--enable-newline-is-crlf],
[use CRLF as newline sequence]),
ac_pcre_newline=crlf)
AC_ARG_ENABLE(newline-is-anycrlf,
AS_HELP_STRING([--enable-newline-is-anycrlf],
[use CR, LF, or CRLF as newline sequence]),
ac_pcre_newline=anycrlf)
AC_ARG_ENABLE(newline-is-any,
AS_HELP_STRING([--enable-newline-is-any],
[use any valid Unicode newline sequence]),
ac_pcre_newline=any)
enable_newline="$ac_pcre_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-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-pcregrep-libz
AC_ARG_ENABLE(pcregrep-libz,
AS_HELP_STRING([--enable-pcregrep-libz],
[link pcregrep with libz to handle .gz files]),
, enable_pcregrep_libz=no)
# Handle --enable-pcregrep-libbz2
AC_ARG_ENABLE(pcregrep-libbz2,
AS_HELP_STRING([--enable-pcregrep-libbz2],
[link pcregrep with libbz2 to handle .bz2 files]),
, enable_pcregrep_libbz2=no)
# Handle --with-pcregrep-bufsize=N
AC_ARG_WITH(pcregrep-bufsize,
AS_HELP_STRING([--with-pcregrep-bufsize=N],
[pcregrep buffer size (default=20480, minimum=8192)]),
, with_pcregrep_bufsize=20480)
# Handle --enable-pcretest-libedit
AC_ARG_ENABLE(pcretest-libedit,
AS_HELP_STRING([--enable-pcretest-libedit],
[link pcretest with libedit]),
, enable_pcretest_libedit=no)
# Handle --enable-pcretest-libreadline
AC_ARG_ENABLE(pcretest-libreadline,
AS_HELP_STRING([--enable-pcretest-libreadline],
[link pcretest with libreadline]),
, enable_pcretest_libreadline=no)
# Handle --with-posix-malloc-threshold=NBYTES
AC_ARG_WITH(posix-malloc-threshold,
AS_HELP_STRING([--with-posix-malloc-threshold=NBYTES],
[threshold for POSIX malloc usage (default=10)]),
, with_posix_malloc_threshold=10)
# 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 pcre8
if test "x$enable_pcre8" = "xunset"
then
enable_pcre8=yes
fi
# Set the default value for pcre16
if test "x$enable_pcre16" = "xunset"
then
enable_pcre16=no
fi
# Set the default value for pcre32
if test "x$enable_pcre32" = "xunset"
then
enable_pcre32=no
fi
# Make sure at least one library is selected
if test "x$enable_pcre8$enable_pcre16$enable_pcre32" = "xnonono"
then
AC_MSG_ERROR([At least one of the 8, 16 or 32 bit libraries must be enabled])
fi
# enable_utf is disabled by default.
if test "x$enable_utf" = "xunset"
then
enable_utf=no
fi
# Convert the newline identifier into the appropriate integer value. The first
# three are ASCII values 0x0a, 0x0d, and 0x0d0a, but if EBCDIC is enabled, they
# are changed below.
case "$enable_newline" in
lf) ac_pcre_newline_value=10 ;;
cr) ac_pcre_newline_value=13 ;;
crlf) ac_pcre_newline_value=3338 ;;
anycrlf) ac_pcre_newline_value=-2 ;;
any) ac_pcre_newline_value=-1 ;;
*)
AC_MSG_ERROR([invalid argument \"$enable_newline\" to --enable-newline option])
;;
esac
# --enable-ebcdic-nl25 implies --enable-ebcdic
if test "x$enable_ebcdic_nl25" = "xyes"; then
enable_ebcdic=yes
fi
# Make sure that if enable_ebcdic is set, rebuild_chartables is also enabled,
# and the newline value is adjusted appropriately (CR is still 13, but LF is
# 21 or 37). Also check that UTF support is not requested, because PCRE cannot
# handle EBCDIC and UTF in the same build. To do so it would need to use
# different character constants depending on the mode.
#
if test "x$enable_ebcdic" = "xyes"; then
enable_rebuild_chartables=yes
if test "x$enable_utf" = "xyes"; then
AC_MSG_ERROR([support for EBCDIC and UTF-8/16/32 cannot be enabled at the same time])
fi
if test "x$enable_ebcdic_nl25" = "xno"; then
case "$ac_pcre_newline_value" in
10) ac_pcre_newline_value=21 ;;
3338) ac_pcre_newline_value=3349 ;;
esac
else
case "$ac_pcre_newline_value" in
10) ac_pcre_newline_value=37 ;;
3338) ac_pcre_newline_value=3365 ;;
esac
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([
/* PCRE 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 PCRE "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_PCRE8 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.
PCRE 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_PCRE8, test "x$enable_pcre8" = "xyes")
AM_CONDITIONAL(WITH_PCRE16, test "x$enable_pcre16" = "xyes")
AM_CONDITIONAL(WITH_PCRE32, test "x$enable_pcre32" = "xyes")
AM_CONDITIONAL(WITH_PCRE_CPP, test "x$enable_cpp" = "xyes")
AM_CONDITIONAL(WITH_REBUILD_CHARTABLES, test "x$enable_rebuild_chartables" = "xyes")
AM_CONDITIONAL(WITH_JIT, test "x$enable_jit" = "xyes")
AM_CONDITIONAL(WITH_UTF, test "x$enable_utf" = "xyes")
AM_CONDITIONAL(WITH_VALGRIND, test "x$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.
# - PCRE 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_pcretest_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_pcretest_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])
PCRE_STATIC_CFLAG=""
if test "x$enable_shared" = "xno" ; then
AC_DEFINE([PCRE_STATIC], [1], [
Define to any value if linking statically (TODO: make nice with Libtool)])
PCRE_STATIC_CFLAG="-DPCRE_STATIC"
fi
AC_SUBST(PCRE_STATIC_CFLAG)
# Here is where pcre specific defines are handled
if test "$enable_pcre8" = "yes"; then
AC_DEFINE([SUPPORT_PCRE8], [], [
Define to any value to enable the 8 bit PCRE library.])
fi
if test "$enable_pcre16" = "yes"; then
AC_DEFINE([SUPPORT_PCRE16], [], [
Define to any value to enable the 16 bit PCRE library.])
fi
if test "$enable_pcre32" = "yes"; then
AC_DEFINE([SUPPORT_PCRE32], [], [
Define to any value to enable the 32 bit PCRE library.])
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 $LIBS"
fi
AC_DEFINE([SUPPORT_JIT], [], [
Define to any value to enable support for Just-In-Time compiling.])
else
enable_pcregrep_jit="no"
fi
if test "$enable_pcregrep_jit" = "yes"; then
AC_DEFINE([SUPPORT_PCREGREP_JIT], [], [
Define to any value to enable JIT support in pcregrep.])
fi
if test "$enable_utf" = "yes"; then
AC_DEFINE([SUPPORT_UTF], [], [
Define to any value to enable support for the UTF-8/16/32 Unicode encoding.
This will work even in an EBCDIC environment, but it is incompatible
with the EBCDIC macro. That is, PCRE can support *either* EBCDIC
code *or* ASCII/UTF-8/16/32, but not both at once.])
fi
if test "$enable_stack_for_recursion" = "no"; then
AC_DEFINE([NO_RECURSE], [], [
PCRE uses recursive function calls to handle backtracking while
matching. This can sometimes be a problem on systems that have
stacks of limited size. Define NO_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 pcre_recurse_malloc() to obtain
memory from the heap. For more detail, see the comments and other stuff
just above the match() function.])
fi
if test "$enable_pcregrep_libz" = "yes"; then
AC_DEFINE([SUPPORT_LIBZ], [], [
Define to any value to allow pcregrep to be linked with libz, so that it is
able to handle .gz files.])
fi
if test "$enable_pcregrep_libbz2" = "yes"; then
AC_DEFINE([SUPPORT_LIBBZ2], [], [
Define to any value to allow pcregrep to be linked with libbz2, so that it
is able to handle .bz2 files.])
fi
if test $with_pcregrep_bufsize -lt 8192 ; then
AC_MSG_WARN([$with_pcregrep_bufsize is too small for --with-pcregrep-bufsize; using 8192])
with_pcregrep_bufsize="8192"
else
if test $? -gt 1 ; then
AC_MSG_ERROR([Bad value for --with-pcregrep-bufsize])
fi
fi
AC_DEFINE_UNQUOTED([PCREGREP_BUFSIZE], [$with_pcregrep_bufsize], [
The value of PCREGREP_BUFSIZE determines the size of buffer used by pcregrep
to hold parts of the file it is searching. This is also the minimum value.
The actual amount of memory used by pcregrep is three times this number,
because it allows for the buffering of "before" and "after" lines.])
if test "$enable_pcretest_libedit" = "yes"; then
AC_DEFINE([SUPPORT_LIBEDIT], [], [
Define to any value to allow pcretest to be linked with libedit.])
LIBREADLINE="$LIBEDIT"
elif test "$enable_pcretest_libreadline" = "yes"; then
AC_DEFINE([SUPPORT_LIBREADLINE], [], [
Define to any value to allow pcretest to be linked with libreadline.])
fi
AC_DEFINE_UNQUOTED([NEWLINE], [$ac_pcre_newline_value], [
The value of NEWLINE determines the default newline character sequence. PCRE
client programs can override this by selecting other values at run time. In
ASCII environments, the value can be 10 (LF), 13 (CR), or 3338 (CRLF); in
EBCDIC environments the value can be 21 or 37 (LF), 13 (CR), or 3349 or 3365
(CRLF) because there are two alternative codepoints (0x15 and 0x25) that are
used as the NL line terminator that is equivalent to ASCII LF. In both ASCII
and EBCDIC environments the value can also be -1 (ANY), or -2 (ANYCRLF).])
if test "$enable_bsr_anycrlf" = "yes"; then
AC_DEFINE([BSR_ANYCRLF], [], [
By default, the \R escape sequence matches any Unicode line ending
character or sequence of characters. If BSR_ANYCRLF is defined (to any
value), this is changed so that backslash-R matches only CR, LF, or CRLF.
The build-time default can be overridden by the user of PCRE at runtime.])
fi
AC_DEFINE_UNQUOTED([LINK_SIZE], [$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, PCRE can also be compiled to use 3 or 4
bytes instead. This allows for longer patterns in extreme cases.])
AC_DEFINE_UNQUOTED([POSIX_MALLOC_THRESHOLD], [$with_posix_malloc_threshold], [
When calling PCRE via the POSIX interface, additional working storage
is required for holding the pointers to capturing substrings because
PCRE requires three integers per substring, whereas the POSIX
interface provides only two. If the number of expected substrings is
small, the wrapper function uses space on the stack, because this is
faster than using malloc() for each call. The threshold above which
the stack is no longer used is defined by POSIX_MALLOC_THRESHOLD.])
AC_DEFINE_UNQUOTED([PARENS_NEST_LIMIT], [$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], [$with_match_limit], [
The value of MATCH_LIMIT determines the default number of times the
internal match() function can be called during a single execution of
pcre_exec(). There is a runtime interface for setting a different
limit. The limit exists in order to catch runaway regular
expressions that take for ever to determine that they do not match.
The default is set very large so that it does not accidentally catch
legitimate cases.])
AC_DEFINE_UNQUOTED([MATCH_LIMIT_RECURSION], [$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
NO_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([PCRE_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 PCRE_EXP_DEFN])
if test "$enable_ebcdic" = "yes"; then
AC_DEFINE_UNQUOTED([EBCDIC], [], [
If you are compiling for a system that uses EBCDIC instead of ASCII
character codes, define this macro to any value. You must also edit the
NEWLINE macro below to set a suitable EBCDIC newline, commonly 21 (0x15).
On systems that can use "configure" or CMake to set EBCDIC, NEWLINE is
automatically adjusted. When EBCDIC is set, PCRE assumes that all input
strings are in EBCDIC. If you do not define this macro, PCRE will assume
input strings are ASCII or UTF-8/16/32 Unicode. It is not possible to build
a version of PCRE that supports both EBCDIC and UTF-8/16/32.])
fi
if test "$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. The value must also be set in
the NEWLINE macro below. On systems that can use "configure" or CMake to
set EBCDIC_NL25, the adjustment of NEWLINE is automatic.])
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
# (Note: The libpcre*_version bits are m4 variables, assigned above)
EXTRA_LIBPCRE8_LDFLAGS="$EXTRA_LIBPCRE8_LDFLAGS \
$NO_UNDEFINED -version-info libpcre8_version"
EXTRA_LIBPCRE16_LDFLAGS="$EXTRA_LIBPCRE16_LDFLAGS \
$NO_UNDEFINED -version-info libpcre16_version"
EXTRA_LIBPCRE32_LDFLAGS="$EXTRA_LIBPCRE32_LDFLAGS \
$NO_UNDEFINED -version-info libpcre32_version"
EXTRA_LIBPCREPOSIX_LDFLAGS="$EXTRA_LIBPCREPOSIX_LDFLAGS \
$NO_UNDEFINED -version-info libpcre2posix_version"
AC_SUBST(EXTRA_LIBPCRE8_LDFLAGS)
AC_SUBST(EXTRA_LIBPCRE16_LDFLAGS)
AC_SUBST(EXTRA_LIBPCRE32_LDFLAGS)
AC_SUBST(EXTRA_LIBPCREPOSIX_LDFLAGS)
# When we run 'make distcheck', use these arguments. Turning off compiler
# optimization makes it run faster.
DISTCHECK_CONFIGURE_FLAGS="CFLAGS='' CXXFLAGS='' --enable-pcre16 --enable-pcre32 --enable-jit --enable-utf"
AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
# Check that, if --enable-pcregrep-libz or --enable-pcregrep-libbz2 is
# specified, the relevant library is available.
if test "$enable_pcregrep_libz" = "yes"; then
if test "$HAVE_ZLIB_H" != "1"; then
echo "** Cannot --enable-pcregrep-libz because zlib.h was not found"
exit 1
fi
if test "$HAVE_LIBZ" != "1"; then
echo "** Cannot --enable-pcregrep-libz because libz was not found"
exit 1
fi
LIBZ="-lz"
fi
AC_SUBST(LIBZ)
if test "$enable_pcregrep_libbz2" = "yes"; then
if test "$HAVE_BZLIB_H" != "1"; then
echo "** Cannot --enable-pcregrep-libbz2 because bzlib.h was not found"
exit 1
fi
if test "$HAVE_LIBBZ2" != "1"; then
echo "** Cannot --enable-pcregrep-libbz2 because libbz2 was not found"
exit 1
fi
LIBBZ2="-lbz2"
fi
AC_SUBST(LIBBZ2)
# Similarly for --enable-pcretest-readline
if test "$enable_pcretest_libedit" = "yes"; then
if test "$enable_pcretest_libreadline" = "yes"; then
echo "** Cannot use both --enable-pcretest-libedit and --enable-pcretest-readline"
exit 1
fi
if test "$HAVE_EDITLINE_READLINE_H" != "1" -a \
"$HAVE_READLINE_READLINE_H" != "1"; then
echo "** Cannot --enable-pcretest-libedit because neither editline/readline.h"
echo "** nor readline/readline.h was found."
exit 1
fi
if test -z "$LIBEDIT"; then
echo "** Cannot --enable-pcretest-libedit because libedit library was not found."
exit 1
fi
fi
if test "$enable_pcretest_libreadline" = "yes"; then
if test "$HAVE_READLINE_H" != "1"; then
echo "** Cannot --enable-pcretest-readline because readline/readline.h was not found."
exit 1
fi
if test "$HAVE_HISTORY_H" != "1"; then
echo "** Cannot --enable-pcretest-readline because readline/history.h was not found."
exit 1
fi
if test -z "$LIBREADLINE"; then
echo "** Cannot --enable-pcretest-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$enable_coverage" = "xyes"])
# Produce these files, in addition to config.h.
AC_CONFIG_FILES(
Makefile
libpcre2-8.pc
libpcre2-16.pc
libpcre2-32.pc
libpcre2posix.pc
pcre2-config
2014-02-28 04:40:55 -05:00
src/pcre2.h
2014-02-20 14:17:05 -05:00
)
# Make the generated script files executable.
AC_CONFIG_COMMANDS([script-chmod], [chmod a+x pcre2-config])
# Make sure that pcre2_chartables.c is removed in case the method for
# creating it was changed by reconfiguration.
AC_CONFIG_COMMANDS([delete-old-chartables], [rm -f pcre2_chartables.c])
AC_OUTPUT
# Print out a nice little message after configure is run displaying the
# chosen options.
ebcdic_nl_code=n/a
if test "$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_pcre8}
Build 16-bit pcre2 library ...... : ${enable_pcre16}
Build 32-bit pcre2 library ...... : ${enable_pcre32}
Enable JIT compiling support .... : ${enable_jit}
Enable UTF-8/16/32 support ...... : ${enable_utf}
Newline char/sequence ........... : ${enable_newline}
\R matches only ANYCRLF ......... : ${enable_bsr_anycrlf}
EBCDIC coding ................... : ${enable_ebcdic}
EBCDIC code for NL .............. : ${ebcdic_nl_code}
Rebuild char tables ............. : ${enable_rebuild_chartables}
Use stack recursion ............. : ${enable_stack_for_recursion}
POSIX mem threshold ............. : ${with_posix_malloc_threshold}
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 pcregrep ............. : ${enable_pcregrep_jit}
Buffer size for pcregrep ........ : ${with_pcregrep_bufsize}
Link pcregrep with libz ......... : ${enable_pcregrep_libz}
Link pcregrep with libbz2 ....... : ${enable_pcregrep_libbz2}
Link pcretest with libedit ...... : ${enable_pcretest_libedit}
Link pcretest with libreadline .. : ${enable_pcretest_libreadline}
Valgrind support ................ : ${enable_valgrind}
Code coverage ................... : ${enable_coverage}
EOF
dnl end configure.ac