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268 lines
6.7 KiB
268 lines
6.7 KiB
1 year ago
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# LIBPCRE_CHECK_CONFIG ([DEFAULT-ACTION])
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# ----------------------------------------------------------
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#
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# Checks for pcre.
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#
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# This macro #defines HAVE_PCRE_H if required header files are
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# found, and sets @LIBPCRE_LDFLAGS@ and @LIBPCRE_CFLAGS@ to the necessary
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# values.
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#
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# This macro is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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AC_DEFUN([LIBPCRE_TRY_LINK],
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[
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[
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#include <pcre.h>
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]], [[
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const char* error = NULL;
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int error_offset = -1;
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pcre *regexp = pcre_compile("test", PCRE_UTF8, &error, &error_offset, NULL);
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pcre_free(regexp);
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]])],[found_libpcre="yes"],[])
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])dnl
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AC_DEFUN([LIBPCRE_CHECK_CONFIG],
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[
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want_libpcre=no
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found_libpcre=no
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libpcre_dir=""
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libpcre_include_dir=""
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libpcre_lib_dir=""
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#
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# process --with-* flags
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#
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AC_ARG_WITH([libpcre],[
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If you want to specify libpcre installation directories:
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AS_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.])],
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[
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if test "$withval" != "no"; then
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want_libpcre=yes
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if test "$withval" != "yes"; then
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libpcre_dir="$withval"
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fi
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fi
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])
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AC_ARG_WITH([libpcre-include], AS_HELP_STRING([--with-libpcre-include@<:@=DIR@:>@], [use libpcre include headers from given path.]), [
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want_libpcre="yes"
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libpcre_include_dir="$withval"
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if ! test -d "$libpcre_include_dir"; then
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AC_MSG_ERROR([cannot find $libpcre_include_dir directory])
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fi
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if ! test -f "$libpcre_include_dir/pcre.h"; then
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AC_MSG_ERROR([cannot find $libpcre_include_dir/pcre.h])
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fi
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])
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AC_ARG_WITH([libpcre-lib], AS_HELP_STRING([--with-libpcre-lib@<:@=DIR@:>@], [use libpcre libraries from given path.]), [
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want_libpcre="yes"
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libpcre_lib_dir="$withval"
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if ! test -d "$libpcre_lib_dir"; then
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AC_MSG_ERROR([cannot find $libpcre_lib_dir directory])
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fi
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])
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#
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# find actual compiler flags and include paths
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#
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if test "$1" != "flags-only"; then
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AC_REQUIRE([PKG_PROG_PKG_CONFIG])
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m4_ifdef([PKG_PROG_PKG_CONFIG], [PKG_PROG_PKG_CONFIG()], [:])
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if test -n "$PKG_CONFIG"; then
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#
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# got pkg-config, use that
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#
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m4_pattern_allow([^PKG_CONFIG_LIBDIR$])
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if test -n "$libpcre_lib_dir"; then
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export PKG_CONFIG_LIBDIR="$libpcre_lib_dir/pkgconfig"
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elif test -n "$libpcre_dir"; then
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export PKG_CONFIG_LIBDIR="$libpcre_dir/lib/pkgconfig"
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fi
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AC_RUN_LOG([$PKG_CONFIG --exists --print-errors libpcre]) || {
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AC_MSG_ERROR([cannot find pkg-config package for libpcre])
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}
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if test -n "$libpcre_include_dir"; then
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LIBPCRE_CFLAGS="-I$libpcre_include_dir"
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else
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LIBPCRE_CFLAGS=`$PKG_CONFIG --cflags libpcre`
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fi
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LIBPCRE_LDFLAGS=`$PKG_CONFIG --libs-only-L libpcre`
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LIBPCRE_LIBS=`$PKG_CONFIG --libs-only-l libpcre`
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unset PKG_CONFIG_LIBDIR
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found_libpcre="yes"
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else
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#
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# no pkg-config, trying to guess
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#
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AC_MSG_WARN([proceeding without pkg-config])
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LIBPCRE_LIBS="-lpcre"
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if test -n "$libpcre_dir"; then
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#
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# directories are given explicitly
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#
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if test -n "$libpcre_include_dir"; then
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LIBPCRE_CFLAGS="-I$libpcre_include_dir"
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else
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if test -f "$libpcre_dir/include/pcre.h"; then
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LIBPCRE_CFLAGS="-I$libpcre_dir/include"
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else
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AC_MSG_ERROR([cannot find $libpcre_dir/include/pcre.h])
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fi
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fi
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if test -n "$libpcre_lib_dir"; then
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LIBPCRE_LDFLAGS="-L$libpcre_lib_dir"
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else
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if test -d "$libpcre_dir/lib"; then
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LIBPCRE_LDFLAGS="-L$libpcre_dir/lib"
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else
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AC_MSG_ERROR([cannot find $libpcre_dir/lib])
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fi
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fi
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found_libpcre="yes"
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elif test -n "$libpcre_include_dir"; then
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LIBPCRE_CFLAGS="-I$libpcre_include_dir"
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if test -n "$libpcre_lib_dir"; then
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LIBPCRE_LDFLAGS="-L$libpcre_lib_dir"
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fi
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found_libpcre="yes"
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elif test -n "$libpcre_lib_dir"; then
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LIBPCRE_LDFLAGS="-L$libpcre_lib_dir"
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found_libpcre="yes"
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else
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#
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# search default directories
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#
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if test -f /usr/include/pcre.h; then
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found_libpcre="yes"
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elif test -f /usr/local/include/pcre.h; then
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LIBPCRE_CFLAGS="-I/usr/local/include"
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LIBPCRE_LDFLAGS="-L/usr/local/lib"
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found_libpcre="yes"
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elif test -f /usr/pkg/include/pcre.h; then
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LIBPCRE_CFLAGS="-I/usr/pkg/include"
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LIBPCRE_LDFLAGS="-L/usr/pkg/lib"
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LIBPCRE_LDFLAGS="$LIBPCRE_LDFLAGS -Wl,-R/usr/pkg/lib"
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found_libpcre="yes"
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elif test -f /opt/csw/include/pcre.h; then
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LIBPCRE_CFLAGS="-I/opt/csw/include"
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LIBPCRE_LDFLAGS="-L/opt/csw/lib"
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if $(echo "$CFLAGS"|grep -q -- "-m64") ; then
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LIBPCRE_LDFLAGS="$LIBPCRE_LDFLAGS/64 -Wl,-R/opt/csw/lib/64"
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else
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LIBPCRE_LDFLAGS="$LIBPCRE_LDFLAGS -Wl,-R/opt/csw/lib"
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fi
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found_libpcre="yes"
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else
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found_libpcre="no"
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fi
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fi
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fi
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#
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# process --enable-static and --enable_static-libs flags
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#
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if test "x$enable_static" = "xyes"; then
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LIBPCRE_LIBS=" $LIBPCRE_LIBS -lpthread"
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elif test "x$enable_static_libs" = "xyes"; then
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if test "x$static_linking_support" == "xno"; then
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AC_MSG_WARN([compiler has no direct suppor for static linkage])
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if test -n "$libpcre_lib_dir"; then
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if test -f "$libpcre_lib_dir/libpcre.a"; then
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LIBPCRE_LIBS="$libpcre_lib_dir/libpcre.a"
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else
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AC_MSG_ERROR([cannot find $libpcre_lib_dir/libpcre.a])
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fi
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elif test -n "$libpcre_dir"; then
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if test -f "$libpcre_dir/lib/libpcre.a"; then
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LIBPCRE_LIBS="$libpcre_dir/lib/libpcre.a"
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else
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AC_MSG_ERROR([cannot find $libpcre_dir/lib/libpcre.a])
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fi
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else
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AC_MSG_ERROR([libpcre directory must be given explicitly in this case])
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fi
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else
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LIBPCRE_LIBS="$LIBPCRE_LDFLAGS ${static_linking_support}static $LIBPCRE_LIBS ${static_linking_support}dynamic"
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LIBPCRE_LDFLAGS=""
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fi
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fi
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#
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# try building with pcre
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#
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AC_MSG_CHECKING([for libpcre support])
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if test "x$found_libpcre" = "xyes"; then
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am_save_CFLAGS="$CFLAGS"
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am_save_LDFLAGS="$LDFLAGS"
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am_save_LIBS="$LIBS"
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CFLAGS="$CFLAGS $LIBPCRE_CFLAGS"
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LDFLAGS="$LDFLAGS $LIBPCRE_LDFLAGS"
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LIBS="$LIBS $LIBPCRE_LIBS"
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found_libpcre="no"
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LIBPCRE_TRY_LINK([no])
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if test "x$found_libpcre" = "xyes"; then
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AC_MSG_RESULT(yes)
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else
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AC_MSG_RESULT(no)
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if test "$1" = "mandatory"; then
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AC_MSG_NOTICE([CFLAGS: $CFLAGS])
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AC_MSG_NOTICE([LDFLAGS: $LDFLAGS])
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AC_MSG_NOTICE([LIBS: $LIBS])
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AC_MSG_ERROR([cannot build with libpcre])
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else
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LIBPCRE_CFLAGS=""
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LIBPCRE_LDFLAGS=""
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LIBPCRE_LIBS=""
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fi
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fi
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CFLAGS="$am_save_CFLAGS"
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LDFLAGS="$am_save_LDFLAGS"
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LIBS="$am_save_LIBS"
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else
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AC_MSG_RESULT(no)
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fi
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AC_SUBST(LIBPCRE_CFLAGS)
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AC_SUBST(LIBPCRE_LDFLAGS)
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AC_SUBST(LIBPCRE_LIBS)
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fi
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])dnl
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