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# =============================================================================
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# http://autoconf-archive.cryp.to/patch_libtool_sys_lib_search_path_spec.html
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# =============================================================================
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# The problem is fixed in modern libtool versions.
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# PATCH_LIBTOOL_SYS_LIB_SEARCH_PATH_SPEC
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# Cross-compiling to win32 from a unix system reveals a bug - the
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# path-separator has been set to ";" depending on the target system.
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# However, the crossgcc search_path_spec works in a unix-environment with
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# unix-style directories and unix-stylish path_separator. The result: the
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# search_path_spec is a single word still containing the ":" separators.
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# This macro fixes the situation: when we see the libtool PATH_SEP to be
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# ":" and search_path_spec to contain ":" characters, then these are
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# replaced with spaces to let the resulting string work as a for-loop
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# argument in libtool scripts that resolve -no-undefined libraries.
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# Later libtool generations have fixed the situation with using
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# $PATH_SEPARATOR in the first place as the original path delimiter that
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# will be scanned for and replaced into spaces.
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# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation; either version 2 of the License, or (at your
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# option) any later version.
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details.
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# You should have received a copy of the GNU General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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# As a special exception, the respective Autoconf Macro's copyright owner
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# gives unlimited permission to copy, distribute and modify the configure
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# scripts that are the output of Autoconf when processing the Macro. You
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# need not follow the terms of the GNU General Public License when using
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# or distributing such scripts, even though portions of the text of the
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# Macro appear in them. The GNU General Public License (GPL) does govern
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# all other use of the material that constitutes the Autoconf Macro.
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# This special exception to the GPL applies to versions of the Autoconf
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# Macro released by the Autoconf Macro Archive. When you make and
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# distribute a modified version of the Autoconf Macro, you may extend this
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# special exception to the GPL to apply to your modified version as well.
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AC_DEFUN([PATCH_LIBTOOL_SYS_LIB_SEARCH_PATH_SPEC],
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[# patch libtool to fix sys_lib_search_path (e.g. crosscompiling a win32 dll)
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if test "_$PATH_SEPARATOR" = "_:" ; then
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if grep "^sys_lib_search_path_spec.*:" libtool >/dev/null ; then
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AC_MSG_RESULT(patching libtool to fix sys_lib_search_path_spec)
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test -f libtool.old || (mv libtool libtool.old && cp libtool.old libtool)
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sed -e "/^sys_lib_search_path_spec/s/:/ /g" libtool >libtool.new
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(test -s libtool.new || rm libtool.new) 2>/dev/null
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test -f libtool.new && mv libtool.new libtool # not 2>/dev/null !!
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test -f libtool || mv libtool.old libtool
added
removed
m4/patch_libtool_sys_lib_search_path_spec.m4
