--- /dev/null
+## ltdl.m4 - Configure ltdl for the target system. -*-Autoconf-*-
+## Copyright (C) 1999-2000 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 AC_LIB_LTDL
+
+# AC_WITH_LTDL
+# ------------
+# 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([AC_WITH_LTDL],
+[AC_REQUIRE([AC_LIB_LTDL])
+AC_SUBST([LIBLTDL])
+AC_SUBST([INCLTDL])
+
+# Unless the user asks us to check, assume no installed ltdl exists.
+use_installed_libltdl=no
+
+AC_ARG_WITH([included_ltdl],
+ [ --with-included-ltdl use the GNU ltdl sources included here])
+
+if test "x$with_included_ltdl" != xyes; then
+ # We are not being forced to use the included libltdl sources, so
+ # decide whether there is a useful installed version we can use.
+ AC_CHECK_HEADER([ltdl.h],
+ [AC_CHECK_LIB([ltdl], [lt_dlcaller_register],
+ [with_included_ltdl=no],
+ [with_included_ltdl=yes])
+ ])
+fi
+
+if test "x$enable_ltdl_install" != xyes; then
+ # If the user did not specify an installable libltdl, then default
+ # to a convenience lib.
+ AC_LIBLTDL_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([libltdl])
+])# AC_WITH_LTDL
+
+
+# AC_LIB_LTDL
+# -----------
+# Perform all the checks necessary for compilation of the ltdl objects
+# -- including compiler checks and header checks.
+AC_DEFUN([AC_LIB_LTDL],
+[AC_PREREQ(2.50)
+AC_REQUIRE([AC_PROG_CC])
+AC_REQUIRE([AC_C_CONST])
+AC_REQUIRE([AC_HEADER_STDC])
+AC_REQUIRE([AC_HEADER_DIRENT])
+AC_REQUIRE([_LT_AC_CHECK_DLFCN])
+AC_REQUIRE([AC_LTDL_ENABLE_INSTALL])
+AC_REQUIRE([AC_LTDL_SHLIBEXT])
+AC_REQUIRE([AC_LTDL_SHLIBPATH])
+AC_REQUIRE([AC_LTDL_SYSSEARCHPATH])
+AC_REQUIRE([AC_LTDL_OBJDIR])
+AC_REQUIRE([AC_LTDL_DLPREOPEN])
+AC_REQUIRE([AC_LTDL_DLLIB])
+AC_REQUIRE([AC_LTDL_SYMBOL_USCORE])
+AC_REQUIRE([AC_LTDL_DLSYM_USCORE])
+AC_REQUIRE([AC_LTDL_SYS_DLOPEN_DEPLIBS])
+AC_REQUIRE([AC_LTDL_FUNC_ARGZ])
+
+AC_CHECK_HEADERS([assert.h ctype.h errno.h malloc.h memory.h stdlib.h \
+ stdio.h unistd.h])
+AC_CHECK_HEADERS([dl.h sys/dl.h dld.h mach-o/dyld.h])
+AC_CHECK_HEADERS([string.h strings.h], [break])
+
+AC_CHECK_FUNCS([strchr index], [break])
+AC_CHECK_FUNCS([strrchr rindex], [break])
+AC_CHECK_FUNCS([memcpy bcopy], [break])
+AC_CHECK_FUNCS([memmove strcmp])
+AC_CHECK_FUNCS([closedir opendir readdir])
+])# AC_LIB_LTDL
+
+
+# AC_LTDL_ENABLE_INSTALL
+# ----------------------
+AC_DEFUN([AC_LTDL_ENABLE_INSTALL],
+[AC_ARG_ENABLE([ltdl-install],
+ [AC_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)
+])])# AC_LTDL_ENABLE_INSTALL
+
+
+# AC_LTDL_SYS_DLOPEN_DEPLIBS
+# --------------------------
+AC_DEFUN([AC_LTDL_SYS_DLOPEN_DEPLIBS],
+[AC_REQUIRE([AC_CANONICAL_HOST])
+AC_CACHE_CHECK([whether deplibs are loaded by dlopen],
+ [libltdl_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.
+ libltdl_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.
+ libltdl_cv_sys_dlopen_deplibs=unknown
+ ;;
+ aix[[45]]*)
+ libltdl_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
+ libltdl_cv_sys_dlopen_deplibs=yes
+ ;;
+ gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
+ # GNU and its variants, using gnu ld.so (Glibc)
+ libltdl_cv_sys_dlopen_deplibs=yes
+ ;;
+ hpux10*|hpux11*)
+ libltdl_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.
+ libltdl_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.
+ libltdl_cv_sys_dlopen_deplibs=yes
+ ;;
+ netbsd*)
+ libltdl_cv_sys_dlopen_deplibs=yes
+ ;;
+ openbsd*)
+ libltdl_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 explictly say `no'.
+ libltdl_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'.
+ libltdl_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'.
+ libltdl_cv_sys_dlopen_deplibs=yes
+ ;;
+ solaris*)
+ libltdl_cv_sys_dlopen_deplibs=yes
+ ;;
+ esac
+ ])
+if test "$libltdl_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
+])# AC_LTDL_SYS_DLOPEN_DEPLIBS
+
+
+# AC_LTDL_SHLIBEXT
+# ----------------
+AC_DEFUN([AC_LTDL_SHLIBEXT],
+[AC_REQUIRE([AC_LIBTOOL_SYS_DYNAMIC_LINKER])
+AC_CACHE_CHECK([which extension is used for loadable modules],
+ [libltdl_cv_shlibext],
+[
+module=yes
+eval libltdl_cv_shlibext=$shrext_cmds
+ ])
+if test -n "$libltdl_cv_shlibext"; then
+ AC_DEFINE_UNQUOTED(LTDL_SHLIB_EXT, "$libltdl_cv_shlibext",
+ [Define to the extension used for shared libraries, say, ".so".])
+fi
+])# AC_LTDL_SHLIBEXT
+
+
+# AC_LTDL_SHLIBPATH
+# -----------------
+AC_DEFUN([AC_LTDL_SHLIBPATH],
+[AC_REQUIRE([AC_LIBTOOL_SYS_DYNAMIC_LINKER])
+AC_CACHE_CHECK([which variable specifies run-time library path],
+ [libltdl_cv_shlibpath_var], [libltdl_cv_shlibpath_var="$shlibpath_var"])
+if test -n "$libltdl_cv_shlibpath_var"; then
+ AC_DEFINE_UNQUOTED(LTDL_SHLIBPATH_VAR, "$libltdl_cv_shlibpath_var",
+ [Define to the name of the environment variable that determines the dynamic library search path.])
+fi
+])# AC_LTDL_SHLIBPATH
+
+
+# AC_LTDL_SYSSEARCHPATH
+# ---------------------
+AC_DEFUN([AC_LTDL_SYSSEARCHPATH],
+[AC_REQUIRE([AC_LIBTOOL_SYS_DYNAMIC_LINKER])
+AC_CACHE_CHECK([for the default library search path],
+ [libltdl_cv_sys_search_path],
+ [libltdl_cv_sys_search_path="$sys_lib_dlsearch_path_spec"])
+if test -n "$libltdl_cv_sys_search_path"; then
+ sys_search_path=
+ for dir in $libltdl_cv_sys_search_path; do
+ if test -z "$sys_search_path"; then
+ sys_search_path="$dir"
+ else
+ sys_search_path="$sys_search_path$PATH_SEPARATOR$dir"
+ fi
+ done
+ AC_DEFINE_UNQUOTED(LTDL_SYSSEARCHPATH, "$sys_search_path",
+ [Define to the system default library search path.])
+fi
+])# AC_LTDL_SYSSEARCHPATH
+
+
+# AC_LTDL_OBJDIR
+# --------------
+AC_DEFUN([AC_LTDL_OBJDIR],
+[AC_CACHE_CHECK([for objdir],
+ [libltdl_cv_objdir],
+ [libltdl_cv_objdir="$objdir"
+ if test -n "$objdir"; then
+ :
+ else
+ rm -f .libs 2>/dev/null
+ mkdir .libs 2>/dev/null
+ if test -d .libs; then
+ libltdl_cv_objdir=.libs
+ else
+ # MS-DOS does not allow filenames that begin with a dot.
+ libltdl_cv_objdir=_libs
+ fi
+ rmdir .libs 2>/dev/null
+ fi
+ ])
+AC_DEFINE_UNQUOTED(LTDL_OBJDIR, "$libltdl_cv_objdir/",
+ [Define to the sub-directory in which libtool stores uninstalled libraries.])
+])# AC_LTDL_OBJDIR
+
+
+# AC_LTDL_DLPREOPEN
+# -----------------
+AC_DEFUN([AC_LTDL_DLPREOPEN],
+[AC_REQUIRE([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE])
+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
+])# AC_LTDL_DLPREOPEN
+
+
+# AC_LTDL_DLLIB
+# -------------
+AC_DEFUN([AC_LTDL_DLLIB],
+[LIBADD_DL=
+AC_SUBST(LIBADD_DL)
+AC_LANG_PUSH([C])
+
+AC_CHECK_FUNC([shl_load],
+ [AC_DEFINE([HAVE_SHL_LOAD], [1],
+ [Define if you have the shl_load function.])],
+ [AC_CHECK_LIB([dld], [shl_load],
+ [AC_DEFINE([HAVE_SHL_LOAD], [1],
+ [Define if you have the shl_load function.])
+ LIBADD_DL="$LIBADD_DL -ldld"],
+ [AC_CHECK_LIB([dl], [dlopen],
+ [AC_DEFINE([HAVE_LIBDL], [1],
+ [Define if you have the libdl library or equivalent.])
+ LIBADD_DL="-ldl" libltdl_cv_lib_dl_dlopen="yes"],
+ [AC_TRY_LINK([#if HAVE_DLFCN_H
+# include <dlfcn.h>
+#endif
+ ],
+ [dlopen(0, 0);],
+ [AC_DEFINE([HAVE_LIBDL], [1],
+ [Define if you have the libdl library or equivalent.]) libltdl_cv_func_dlopen="yes"],
+ [AC_CHECK_LIB([svld], [dlopen],
+ [AC_DEFINE([HAVE_LIBDL], [1],
+ [Define if you have the libdl library or equivalent.])
+ LIBADD_DL="-lsvld" libltdl_cv_func_dlopen="yes"],
+ [AC_CHECK_LIB([dld], [dld_link],
+ [AC_DEFINE([HAVE_DLD], [1],
+ [Define if you have the GNU dld library.])
+ LIBADD_DL="$LIBADD_DL -ldld"],
+ [AC_CHECK_FUNC([_dyld_func_lookup],
+ [AC_DEFINE([HAVE_DYLD], [1],
+ [Define if you have the _dyld_func_lookup function.])])
+ ])
+ ])
+ ])
+ ])
+ ])
+])
+
+if test x"$libltdl_cv_func_dlopen" = xyes || test x"$libltdl_cv_lib_dl_dlopen" = xyes
+then
+ lt_save_LIBS="$LIBS"
+ LIBS="$LIBS $LIBADD_DL"
+ AC_CHECK_FUNCS([dlerror])
+ LIBS="$lt_save_LIBS"
+fi
+AC_LANG_POP
+])# AC_LTDL_DLLIB
+
+
+# AC_LTDL_SYMBOL_USCORE
+# ---------------------
+# does the compiler prefix global symbols with an underscore?
+AC_DEFUN([AC_LTDL_SYMBOL_USCORE],
+[AC_REQUIRE([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE])
+AC_CACHE_CHECK([for _ prefix in compiled symbols],
+ [ac_cv_sys_symbol_underscore],
+ [ac_cv_sys_symbol_underscore=no
+ cat > conftest.$ac_ext <<EOF
+void nm_test_func(){}
+int main(){nm_test_func;return 0;}
+EOF
+ if AC_TRY_EVAL(ac_compile); then
+ # Now try to grab the symbols.
+ ac_nlist=conftest.nm
+ if AC_TRY_EVAL(NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $ac_nlist) && test -s "$ac_nlist"; then
+ # See whether the symbols have a leading underscore.
+ if grep '^. _nm_test_func' "$ac_nlist" >/dev/null; then
+ ac_cv_sys_symbol_underscore=yes
+ else
+ if grep '^. nm_test_func ' "$ac_nlist" >/dev/null; then
+ :
+ else
+ echo "configure: cannot find nm_test_func in $ac_nlist" >&AC_FD_CC
+ fi
+ fi
+ else
+ echo "configure: cannot run $lt_cv_sys_global_symbol_pipe" >&AC_FD_CC
+ fi
+ else
+ echo "configure: failed program was:" >&AC_FD_CC
+ cat conftest.c >&AC_FD_CC
+ fi
+ rm -rf conftest*
+ ])
+])# AC_LTDL_SYMBOL_USCORE
+
+
+# AC_LTDL_DLSYM_USCORE
+# --------------------
+AC_DEFUN([AC_LTDL_DLSYM_USCORE],
+[AC_REQUIRE([AC_LTDL_SYMBOL_USCORE])
+if test x"$ac_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 $LIBADD_DL"
+ _LT_AC_TRY_DLOPEN_SELF(
+ [libltdl_cv_need_uscore=no], [libltdl_cv_need_uscore=yes],
+ [], [libltdl_cv_need_uscore=cross])
+ LIBS="$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
+])# AC_LTDL_DLSYM_USCORE
+
+# AC_LTDL_FUNC_ARGZ
+# -----------------
+AC_DEFUN([AC_LTDL_FUNC_ARGZ],
+[AC_CHECK_HEADERS([argz.h])
+
+AC_CHECK_TYPES([error_t],
+ [],
+ [AC_DEFINE([error_t], [int],
+ [Define to a type to use for `error_t' if it is not otherwise available.])],
+ [#if HAVE_ARGZ_H
+# include <argz.h>
+#endif])
+
+AC_CHECK_FUNCS([argz_append argz_create_sep argz_insert argz_next argz_stringify])
+])# AC_LTDL_FUNC_ARGZ
projects / oota-llvm.git / commitdiff