## ltdl.m4 - Configure ltdl for the target system. -*-Autoconf-*- ## Copyright (C) 1999-2004 Free Software Foundation, Inc. ## ## This program is free software; you can redistribute it and/or modify ## it under the terms of the GNU General Public License as published by ## the Free Software Foundation; either version 2 of the License, or ## (at your option) any later version. ## ## This program 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. See the GNU ## General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with this program; if not, write to the Free Software ## Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ## ## As a special exception to the GNU General Public License, if you ## distribute this file as part of a program that contains a ## configuration script generated by Autoconf, you may include it under ## the same distribution terms that you use for the rest of that program. # serial 6 LTDL_INIT # LT_WITH_LTDL([DIRECTORY]) # ------------------------- # Clients of libltdl can use this macro to allow the installer to # choose between a shipped copy of the ltdl sources or a preinstalled # version of the library. AC_DEFUN([LT_WITH_LTDL], [AC_ARG_WITH([included_ltdl], [AS_HELP_STRING([--with-included-ltdl], [use the GNU ltdl sources included here])]) if test "x$with_included_ltdl" != xyes; then # We are not being forced to use the included libltdl sources, so # decide whether there is a useful installed version we can use. AC_CHECK_HEADER([ltdl.h], [AC_CHECK_LIB([ltdl], [lt_dlcaller_register], [with_included_ltdl=no], [with_included_ltdl=yes])], [], [AC_INCLUDES_DEFAULT] ) fi if test "x$enable_ltdl_install" != xyes; then # If the user did not specify an installable libltdl, then default # to a convenience lib. LTDL_CONVENIENCE fi if test "x$with_included_ltdl" = xno; then # If the included ltdl is not to be used. then Use the # preinstalled libltdl we found. AC_DEFINE([HAVE_LTDL], 1, [Define this if a modern libltdl is already installed]) LIBLTDL=-lltdl fi # Report our decision... AC_MSG_CHECKING([whether to use included libltdl]) AC_MSG_RESULT([$with_included_ltdl]) AC_CONFIG_SUBDIRS(m4_if($#, 1, [$1], [libltdl])) ])# LT_WITH_LTDL # Old name: AU_DEFUN([AC_WITH_LTDL], [LT_WITH_LTDL]) dnl aclocal-1.4 backwards compatibility: dnl AC_DEFUN([AC_WITH_LTDL], []) # LTDL_CONVENIENCE([DIRECTORY]) # ----------------------------- # sets LIBLTDL to the link flags for the libltdl convenience library and # LTDLINCL to the include flags for the libltdl header and adds # --enable-ltdl-convenience to the configure arguments. Note that LIBLTDL # and LTDLINCL are not AC_SUBSTed, nor is AC_CONFIG_SUBDIRS called. If # DIRECTORY is not provided, it is assumed to be `libltdl'. LIBLTDL will # be prefixed with '${top_builddir}/' and LTDLINCL will be prefixed with # '${top_srcdir}/' (note the single quotes!). If your package is not # flat and you're not using automake, define top_builddir and # top_srcdir appropriately in the Makefiles. AC_DEFUN([LTDL_CONVENIENCE], [case $enable_ltdl_convenience in no) AC_MSG_ERROR([this package needs a convenience libltdl]) ;; "") enable_ltdl_convenience=yes ac_configure_args="$ac_configure_args --enable-ltdl-convenience" ;; esac LIBLTDL='${top_builddir}/'m4_if($#, 1, [$1], ['libltdl'])/libltdlc.la LTDLINCL='-I${top_srcdir}/'m4_if($#, 1, [$1], ['libltdl']) AC_SUBST([LIBLTDL]) AC_SUBST([LTDLINCL]) # For backwards non-gettext consistent compatibility... INCLTDL="$LTDLINCL" AC_SUBST([INCLTDL]) ])# LTDL_CONVENIENCE # Old name: AU_DEFUN([AC_LIBLTDL_CONVENIENCE], [LTDL_CONVENIENCE]) dnl aclocal-1.4 backwards compatibility: dnl AC_DEFUN([AC_LIBLTDL_CONVENIENCE], []) # LTDL_INSTALLABLE([DIRECTORY]) # ----------------------------- # sets LIBLTDL to the link flags for the libltdl installable library and # LTDLINCL to the include flags for the libltdl header and adds # --enable-ltdl-install to the configure arguments. Note that LIBLTDL # and LTDLINCL are not AC_SUBSTed, nor is AC_CONFIG_SUBDIRS called. If # DIRECTORY is not provided and an installed libltdl is not found, it is # assumed to be `libltdl'. LIBLTDL will be prefixed with '${top_builddir}/' # and LTDLINCL will be prefixed with '${top_srcdir}/' (note the single # quotes!). If your package is not flat and you're not using automake, # define top_builddir and top_srcdir appropriately in the Makefiles. # In the future, this macro may have to be called after LT_INIT. AC_DEFUN([LTDL_INSTALLABLE], [AC_CHECK_LIB(ltdl, lt_dlinit, [test x"$enable_ltdl_install" != xyes && enable_ltdl_install=no], [if test x"$enable_ltdl_install" = xno; then AC_MSG_WARN([libltdl not installed, but installation disabled]) else enable_ltdl_install=yes fi ]) if test x"$enable_ltdl_install" = x"yes"; then ac_configure_args="$ac_configure_args --enable-ltdl-install" LIBLTDL='${top_builddir}/'m4_if($#, 1, [$1], ['libltdl'])/libltdl.la LTDLINCL='-I${top_srcdir}/'m4_if($#, 1, [$1], ['libltdl']) else ac_configure_args="$ac_configure_args --enable-ltdl-install=no" LIBLTDL="-lltdl" LTDLINCL= fi AC_SUBST([LIBLTDL]) AC_SUBST([LTDLINCL]) # For backwards non-gettext consistent compatibility... INCLTDL="$LTDLINCL" AC_SUBST([INCLTDL]) ])# LTDL_INSTALLABLE # Old name: AU_DEFUN([AC_LIBLTDL_INSTALLABLE], [LTDL_INSTALLABLE]) dnl aclocal-1.4 backwards compatibility: dnl AC_DEFUN([AC_LIBLTDL_INSTALLABLE], []) # LTDL_INIT # --------- # Perform all the checks necessary for compilation of the ltdl objects # -- including compiler checks and header checks. AC_DEFUN([LTDL_INIT], [AC_REQUIRE([AC_PROG_CC])dnl AC_REQUIRE([AC_C_CONST])dnl AC_REQUIRE([AC_HEADER_STDC])dnl AC_REQUIRE([AC_HEADER_DIRENT])dnl AC_REQUIRE([LT_SYS_MODULE_EXT])dnl AC_REQUIRE([LT_SYS_MODULE_PATH])dnl AC_REQUIRE([LT_SYS_DLSEARCH_PATH])dnl AC_REQUIRE([LT_LIB_DLLOAD])dnl AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl AC_REQUIRE([LT_FUNC_DLSYM_USCORE])dnl AC_REQUIRE([LT_SYS_DLOPEN_DEPLIBS])dnl AC_REQUIRE([gl_FUNC_ARGZ])dnl m4_require([_LT_CHECK_OBJDIR])dnl m4_require([_LT_HEADER_DLFCN])dnl m4_require([_LT_ENABLE_INSTALL])dnl m4_require([_LT_CHECK_DLPREOPEN])dnl # In order that ltdl.c can compile, run AC_CONFIG_HEADERS for the user # if they did not call it themself. This is so that ltdl.h can pick up # the parent projects config.h file, The first file in AC_CONFIG_HEADERS # must contain the definitions required by ltdl.c. m4_ifset([AC_LIST_HEADERS], [CONFIG_H=`echo "AC_LIST_HEADERS" | $SED 's,^[[ ]]*,,;s,[[ :]].*$,,'`], [CONFIG_H=config.h;AC_CONFIG_HEADERS([config.h])]) AC_SUBST([CONFIG_H]) AC_CHECK_HEADERS([memory.h unistd.h dl.h sys/dl.h dld.h mach-o/dyld.h], [], [], [AC_INCLUDES_DEFAULT]) AC_CHECK_HEADERS([string.h strings.h], [break], [], [AC_INCLUDES_DEFAULT]) AC_CHECK_FUNCS([closedir opendir readdir], [], [AC_LIBOBJ([lt__dirent])]) ])# LTDL_INIT # Old name: AU_DEFUN([AC_LIB_LTDL], [LTDL_INIT]) dnl aclocal-1.4 backwards compatibility: dnl AC_DEFUN([AC_LIB_LTDL], []) # _LT_ENABLE_INSTALL # ------------------ m4_defun([_LT_ENABLE_INSTALL], [AC_ARG_ENABLE([ltdl-install], [AS_HELP_STRING([--enable-ltdl-install], [install libltdl])]) AM_CONDITIONAL(INSTALL_LTDL, test x"${enable_ltdl_install-no}" != xno) AM_CONDITIONAL(CONVENIENCE_LTDL, test x"${enable_ltdl_convenience-no}" != xno) ])])# _LT_ENABLE_INSTALL # LT_SYS_DLOPEN_DEPLIBS # --------------------- AC_DEFUN([LT_SYS_DLOPEN_DEPLIBS], [AC_REQUIRE([AC_CANONICAL_HOST])dnl AC_CACHE_CHECK([whether deplibs are loaded by dlopen], [lt_cv_sys_dlopen_deplibs], [# PORTME does your system automatically load deplibs for dlopen? # or its logical equivalent (e.g. shl_load for HP-UX < 11) # For now, we just catch OSes we know something about -- in the # future, we'll try test this programmatically. lt_cv_sys_dlopen_deplibs=unknown case "$host_os" in aix3*|aix4.1.*|aix4.2.*) # Unknown whether this is true for these versions of AIX, but # we want this `case' here to explicitly catch those versions. lt_cv_sys_dlopen_deplibs=unknown ;; aix[[45]]*) lt_cv_sys_dlopen_deplibs=yes ;; darwin*) # Assuming the user has installed a libdl from somewhere, this is true # If you are looking for one http://www.opendarwin.org/projects/dlcompat lt_cv_sys_dlopen_deplibs=yes ;; gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu) # GNU and its variants, using gnu ld.so (Glibc) lt_cv_sys_dlopen_deplibs=yes ;; hpux10*|hpux11*) lt_cv_sys_dlopen_deplibs=yes ;; irix[[12345]]*|irix6.[[01]]*) # Catch all versions of IRIX before 6.2, and indicate that we don't # know how it worked for any of those versions. lt_cv_sys_dlopen_deplibs=unknown ;; irix*) # The case above catches anything before 6.2, and it's known that # at 6.2 and later dlopen does load deplibs. lt_cv_sys_dlopen_deplibs=yes ;; netbsd*) lt_cv_sys_dlopen_deplibs=yes ;; openbsd*) lt_cv_sys_dlopen_deplibs=yes ;; osf[[1234]]*) # dlopen did load deplibs (at least at 4.x), but until the 5.x series, # it did *not* use an RPATH in a shared library to find objects the # library depends on, so we explicitly say `no'. lt_cv_sys_dlopen_deplibs=no ;; osf5.0|osf5.0a|osf5.1) # dlopen *does* load deplibs and with the right loader patch applied # it even uses RPATH in a shared library to search for shared objects # that the library depends on, but there's no easy way to know if that # patch is installed. Since this is the case, all we can really # say is unknown -- it depends on the patch being installed. If # it is, this changes to `yes'. Without it, it would be `no'. lt_cv_sys_dlopen_deplibs=unknown ;; osf*) # the two cases above should catch all versions of osf <= 5.1. Read # the comments above for what we know about them. # At > 5.1, deplibs are loaded *and* any RPATH in a shared library # is used to find them so we can finally say `yes'. lt_cv_sys_dlopen_deplibs=yes ;; qnx*) lt_cv_sys_dlopen_deplibs=yes ;; solaris*) lt_cv_sys_dlopen_deplibs=yes ;; esac ]) if test "$lt_cv_sys_dlopen_deplibs" != yes; then AC_DEFINE([LTDL_DLOPEN_DEPLIBS], [1], [Define if the OS needs help to load dependent libraries for dlopen().]) fi ])# LT_SYS_DLOPEN_DEPLIBS # Old name: AU_DEFUN([AC_LTDL_SYS_DLOPEN_DEPLIBS], [LT_SYS_DLOPEN_DEPLIBS]) dnl aclocal-1.4 backwards compatibility: dnl AC_DEFUN([AC_LTDL_SYS_DLOPEN_DEPLIBS], []) # LT_SYS_MODULE_EXT # ----------------- AC_DEFUN([LT_SYS_MODULE_EXT], [m4_require([_LT_SYS_DYNAMIC_LINKER])dnl AC_CACHE_CHECK([which extension is used for runtime loadable modules], [libltdl_cv_shlibext], [ module=yes eval libltdl_cv_shlibext=$shrext_cmds ]) if test -n "$libltdl_cv_shlibext"; then m4_pattern_allow([LT_MODULE_EXT])dnl AC_DEFINE_UNQUOTED(LT_MODULE_EXT, "$libltdl_cv_shlibext", [Define to the extension used for runtime loadable modules, say, ".so".]) fi ])# LT_SYS_MODULE_EXT # Old name: AU_DEFUN([AC_LTDL_SHLIBEXT], [LT_SYS_MODULE_EXT]) dnl aclocal-1.4 backwards compatibility: dnl AC_DEFUN([AC_LTDL_SHLIBEXT], []) # LT_SYS_MODULE_PATH # ------------------ AC_DEFUN([LT_SYS_MODULE_PATH], [m4_require([_LT_SYS_DYNAMIC_LINKER])dnl AC_CACHE_CHECK([which variable specifies run-time module search path], [lt_cv_module_path_var], [lt_cv_module_path_var="$shlibpath_var"]) if test -n "$lt_cv_module_path_var"; then m4_pattern_allow([LT_MODULE_PATH_VAR])dnl AC_DEFINE_UNQUOTED(LT_MODULE_PATH_VAR, "$lt_cv_module_path_var", [Define to the name of the environment variable that determines the run-time module search path.]) fi ])# LT_SYS_MODULE_PATH # Old name: AU_DEFUN([AC_LTDL_SHLIBPATH], [LT_SYS_MODULE_PATH]) dnl aclocal-1.4 backwards compatibility: dnl AC_DEFUN([AC_LTDL_SHLIBPATH], []) # LT_SYS_DLSEARCH_PATH # --------------------- AC_DEFUN([LT_SYS_DLSEARCH_PATH], [m4_require([_LT_SYS_DYNAMIC_LINKER])dnl AC_CACHE_CHECK([for the default library search path], [lt_cv_sys_dlsearch_path], [lt_cv_sys_dlsearch_path="$sys_lib_dlsearch_path_spec"]) if test -n "$lt_cv_sys_dlsearch_path"; then sys_dlsearch_path= for dir in $lt_cv_sys_dlsearch_path; do if test -z "$sys_dlsearch_path"; then sys_dlsearch_path="$dir" else sys_dlsearch_path="$sys_dlsearch_path$PATH_SEPARATOR$dir" fi done m4_pattern_allow([LT_DLSEARCH_PATH])dnl AC_DEFINE_UNQUOTED(LT_DLSEARCH_PATH, "$sys_dlsearch_path", [Define to the system default library search path.]) fi ])# LT_SYS_DLSEARCH_PATH # Old name: AU_DEFUN([AC_LTDL_SYSSEARCHPATH], [LT_SYS_DLSEARCH_PATH]) dnl aclocal-1.4 backwards compatibility: dnl AC_DEFUN([AC_LTDL_SYSSEARCHPATH], []) # _LT_CHECK_DLPREOPEN # ----------------- m4_defun([_LT_CHECK_DLPREOPEN], [m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl AC_CACHE_CHECK([whether libtool supports -dlopen/-dlpreopen], [libltdl_cv_preloaded_symbols], [if test -n "$lt_cv_sys_global_symbol_pipe"; then libltdl_cv_preloaded_symbols=yes else libltdl_cv_preloaded_symbols=no fi ]) if test x"$libltdl_cv_preloaded_symbols" = xyes; then AC_DEFINE(HAVE_PRELOADED_SYMBOLS, 1, [Define if libtool can extract symbol lists from object files.]) fi ])# _LT_CHECK_DLPREOPEN # LT_LIB_DLLOAD # ------------- AC_DEFUN([LT_LIB_DLLOAD], [m4_pattern_allow([^LT_DLLOADERS$]) LT_DLLOADERS= AC_SUBST([LT_DLLOADERS]) AC_LANG_PUSH([C]) LIBADD_DLOPEN= AC_CHECK_LIB([dl], [dlopen], [AC_DEFINE([HAVE_LIBDL], [1], [Define if you have the libdl library or equivalent.]) LIBADD_DLOPEN="-ldl" libltdl_cv_lib_dl_dlopen="yes" LT_DLLOADERS="$LT_DLLOADERS dlopen.la"], [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#if HAVE_DLFCN_H # include #endif ]], [[dlopen(0, 0);]])], [AC_DEFINE([HAVE_LIBDL], [1], [Define if you have the libdl library or equivalent.]) libltdl_cv_func_dlopen="yes" LT_DLLOADERS="$LT_DLLOADERS dlopen.la"], [AC_CHECK_LIB([svld], [dlopen], [AC_DEFINE([HAVE_LIBDL], [1], [Define if you have the libdl library or equivalent.]) LIBADD_DLOPEN="-lsvld" libltdl_cv_func_dlopen="yes" LT_DLLOADERS="$LT_DLLOADERS dlopen.la"])])]) if test x"$libltdl_cv_func_dlopen" = xyes || test x"$libltdl_cv_lib_dl_dlopen" = xyes then lt_save_LIBS="$LIBS" LIBS="$LIBS $LIBADD_DLOPEN" AC_CHECK_FUNCS([dlerror]) LIBS="$lt_save_LIBS" fi AC_SUBST([LIBADD_DLOPEN]) LIBADD_SHL_LOAD= AC_CHECK_FUNC([shl_load], [AC_DEFINE([HAVE_SHL_LOAD], [1], [Define if you have the shl_load function.]) LT_DLLOADERS="$LT_DLLOADERS shl_load.la"], [AC_CHECK_LIB([dld], [shl_load], [AC_DEFINE([HAVE_SHL_LOAD], [1], [Define if you have the shl_load function.]) LT_DLLOADERS="$LT_DLLOADERS shl_load.la" LIBADD_SHL_LOAD="-ldld"])]) AC_SUBST([LIBADD_SHL_LOAD]) case $host_os in darwin[[1567]].*) # We only want this for pre-Mac OS X 10.4. AC_CHECK_FUNC([_dyld_func_lookup], [AC_DEFINE([HAVE_DYLD], [1], [Define if you have the _dyld_func_lookup function.]) LT_DLLOADERS="$LT_DLLOADERS dyld.la"]) ;; beos*) LT_DLLOADERS="$LT_DLLOADERS load_add_on.la" ;; cygwin* | mingw* | os2* | pw32*) LT_DLLOADERS="$LT_DLLOADERS loadlibrary.la" ;; esac AC_CHECK_LIB([dld], [dld_link], [AC_DEFINE([HAVE_DLD], [1], [Define if you have the GNU dld library.]) LT_DLLOADERS="$LT_DLLOADERS dld_link.la"]) AC_SUBST([LIBADD_DLD_LINK]) m4_pattern_allow([^LT_DLPREOPEN$]) LT_DLPREOPEN= for lt_loader in $LT_DLLOADERS; do LT_DLPREOPEN="$LT_DLPREOPEN-dlpreopen loaders/$lt_loader " done AC_SUBST([LT_DLPREOPEN]) dnl This isn't used anymore, but set it for backwards compatibility LIBADD_DL="$LIBADD_DLOPEN $LIBADD_SHL_LOAD" AC_SUBST([LIBADD_DL]) AC_LANG_POP ])# LT_LIB_DLLOAD # Old name: AU_DEFUN([AC_LTDL_DLLIB], [LT_LIB_DLLOAD]) dnl aclocal-1.4 backwards compatibility: dnl AC_DEFUN([AC_LTDL_DLLIB], []) # LT_SYS_SYMBOL_USCORE # --------------------- # does the compiler prefix global symbols with an underscore? AC_DEFUN([LT_SYS_SYMBOL_USCORE], [m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl AC_CACHE_CHECK([for _ prefix in compiled symbols], [lt_cv_sys_symbol_underscore], [lt_cv_sys_symbol_underscore=no cat > conftest.$ac_ext < $ac_nlist) && test -s "$ac_nlist"; then # See whether the symbols have a leading underscore. if grep '^. _nm_test_func' "$ac_nlist" >/dev/null; then lt_cv_sys_symbol_underscore=yes else if grep '^. nm_test_func ' "$ac_nlist" >/dev/null; then : else echo "configure: cannot find nm_test_func in $ac_nlist" >&AS_MESSAGE_LOG_FD fi fi else echo "configure: cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD fi else echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD cat conftest.c >&AS_MESSAGE_LOG_FD fi rm -rf conftest* ]) sys_symbol_underscore=$lt_cv_sys_symbol_underscore AC_SUBST([sys_symbol_underscore]) ])# LT_SYS_SYMBOL_USCORE # Old name: AU_DEFUN([AC_LTDL_SYMBOL_USCORE], [LT_SYS_SYMBOL_USCORE]) dnl aclocal-1.4 backwards compatibility: dnl AC_DEFUN([AC_LTDL_SYMBOL_USCORE], []) # LT_FUNC_DLSYM_USCORE # -------------------- AC_DEFUN([LT_FUNC_DLSYM_USCORE], [AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl if test x"$lt_cv_sys_symbol_underscore" = xyes; then if test x"$libltdl_cv_func_dlopen" = xyes || test x"$libltdl_cv_lib_dl_dlopen" = xyes ; then AC_CACHE_CHECK([whether we have to add an underscore for dlsym], [libltdl_cv_need_uscore], [libltdl_cv_need_uscore=unknown save_LIBS="$LIBS" LIBS="$LIBS $LIBADD_DLOPEN" _LT_TRY_DLOPEN_SELF( [libltdl_cv_need_uscore=no], [libltdl_cv_need_uscore=yes], [], [libltdl_cv_need_uscore=cross]) LIBS="$save_LIBS" ]) fi fi if test x"$libltdl_cv_need_uscore" = xyes; then AC_DEFINE(NEED_USCORE, 1, [Define if dlsym() requires a leading underscore in symbol names.]) fi ])# LT_FUNC_DLSYM_USCORE # Old name: AU_DEFUN([AC_LTDL_DLSYM_USCORE], [LT_FUNC_DLSYM_USCORE]) dnl aclocal-1.4 backwards compatibility: dnl AC_DEFUN([AC_LTDL_DLSYM_USCORE], [])