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# ===========================================================================
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# http://autoconf-archive.cryp.to/patch_libtool_on_darwin_pass_all.html
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# ===========================================================================
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# The problem is fixed in modern libtool versions.
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# PATCH_LIBTOOL_ON_DARWIN_PASS_ALL
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# libtool 1.4.x on darwin uses a lib_check with a file_magic that tests
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# for "Mach-O dynamically linked shared library". However, this is the
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# file_magic for ".dylib" sharedlibraries but not for ".so"
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# sharedlibraries. They have another "file -L" result of "Mach-O bundle
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# ppc", which has an annoying result: when a a module (a .so) is dependent
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# on another module (another .so) then libtool will error out and say that
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# the import-module was not found where in fact it is available. It does
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# not even try to call the real linker.
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# Later libtool generations have changed the processing, the import
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# file_check has been changed from "file_magic" to "pass_all". This
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# ac-macro does a similar thing: it checks for the darwin host, it checks
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# for the check_method, and when it was not "pass_all" then we set it to
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# "deplibs_check_method=pass_all"
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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_ON_DARWIN_PASS_ALL],
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[# libtool-1.4 specific, on darwin set deplibs_check_method=pass_all
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if grep "^deplibs_check_method=.*file_magic" libtool >/dev/null ; then
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AC_MSG_RESULT(patching libtool to set deplibs_check_method=pass_all)
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test -f libtool.old || (mv libtool libtool.old && cp libtool.old libtool)
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sed -e '/^deplibs_check_method=/s/=.*/="pass_all"/' 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_on_darwin_pass_all.m4
