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# LIBPCRE_CHECK_CONFIG ([DEFAULT-ACTION])

# ----------------------------------------------------------

#

# Checks for pcre.

#

# This macro #defines HAVE_PCRE_H if required header files are

# found, and sets @LIBPCRE_LDFLAGS@ and @LIBPCRE_CFLAGS@ to the necessary

# values.

#

# This macro is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

​

AC_DEFUN([LIBPCRE_TRY_LINK],

[

AC_TRY_LINK(

[

#include <pcre.h>

],

[

    const char* error = NULL;

    int error_offset = -1;

    pcre *regexp = pcre_compile("test", PCRE_UTF8, &error, &error_offset, NULL);

    pcre_free(regexp);

],

found_libpcre="yes")

])dnl

​

AC_DEFUN([LIBPCRE_CHECK_CONFIG],

[

    AC_ARG_WITH([libpcre],[

If you want to specify libpcre installation directories:

AC_HELP_STRING([--with-libpcre@<:@=DIR@:>@], [use libpcre from given base install directory (DIR), default is to search through a number of common places for the libpcre files.])],

        [

            if test "$withval" = "yes"; then

                if test -f /usr/local/include/pcre.h; then

                    withval="/usr/local"

                else

                    withval="/usr"

                fi

            else

                _libpcre_dir_lib="$withval/lib"

            fi

            _libpcre_dir="$withval"

            test "x$withval" = "xyes" && withval=/usr

            LIBPCRE_CFLAGS="-I$withval/include"

            LIBPCRE_LDFLAGS="-L$withval/lib"

            _libpcre_dir_set="yes"

        ]

    )

​

    AC_ARG_WITH([libpcre-include],

        AC_HELP_STRING([--with-libpcre-include@<:@=DIR@:>@],

            [use libpcre include headers from given path.]

        ),

        [

            LIBPCRE_CFLAGS="-I$withval"

            _libpcre_dir_set="yes"

        ]

    )

​

    AC_ARG_WITH([libpcre-lib],

        AC_HELP_STRING([--with-libpcre-lib@<:@=DIR@:>@],

            [use libpcre libraries from given path.]

        ),

        [

            _libpcre_dir="$withval"

            _libpcre_dir_lib="$withval"

            LIBPCRE_LDFLAGS="-L$withval"

            _libpcre_dir_set="yes"

        ]

    )

​

    if test "x$enable_static_libs" = "xyes"; then

        AC_REQUIRE([PKG_PROG_PKG_CONFIG])

        PKG_PROG_PKG_CONFIG()

        test -z "$PKG_CONFIG" -a -z "$_libpcre_dir_lib" && AC_MSG_ERROR([Not found pkg-config library])

        m4_pattern_allow([^PKG_CONFIG_LIBDIR$])

    fi

​

    AC_MSG_CHECKING(for libpcre support)

​

    LIBPCRE_LIBS="-lpcre"

​

    if test "x$enable_static" = "xyes"; then

        LIBPCRE_LIBS=" $LIBPCRE_LIBS -lpthread"

    elif test "x$enable_static_libs" = "xyes" -a -z "$PKG_CONFIG"; then

        LIBPCRE_LIBS="$_libpcre_dir_lib/libpcre.a"

    elif test "x$enable_static_libs" = "xyes"; then

​

        test "x$static_linking_support" = "xno" -a -z "$_libpcre_dir_lib" && AC_MSG_ERROR(["Compiler not support statically linked libs from default folders"])