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Autoconf Macro: patch_libtool_on_darwin_pass_all
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<h1>
patch_libtool_on_darwin_pass_all
</h1>
<h2>
Synopsis
</h2>
<p class="indent" style="white-space:nowrap;">
<code>PATCH_LIBTOOL_ON_DARWIN_PASS_ALL</code>
</p>
<h2>
Description
</h2>
<div class="indent">
<p>
libtool 1.4.x on darwin uses a lib_check with a file_magic that tests for
"Mach-O dynamically linked shared library". However, this is the file_magic
for ".dylib" sharedlibraries but not for ".so" sharedlibraries. They have
another "file -L" result of "Mach-O bundle ppc", which has an annoying
result: when a a module (a .so) is dependent on another module (another
.so) then libtool will error out and say that the import-module was not
found where in fact it is available. It does not even try to call the real
linker.
</p>
<p>
Later libtool generations have changed the processing, the import
file_check has been changed from "file_magic" to "pass_all". This ac-macro
does a similar thing: it checks for the darwin host, it checks for the
check_method, and when it was not "pass_all" then we set it to
"deplibs_check_method=pass_all"
</p>
</div>
<h2>
Author
</h2>
<p class="indent">
Guido Draheim <guidod@gmx.de>
</p>
<h2>
Last Modified
</h2>
<p class="indent">
2005-01-21
</p>
<h2>
M4 Source Code
</h2>
<div class="indent">
<pre class="m4source">
AC_DEFUN([PATCH_LIBTOOL_ON_DARWIN_PASS_ALL],
[# libtool-1.4 specific, on darwin set deplibs_check_method=pass_all
case "$host_os" in
darwin*)
if grep "^deplibs_check_method=.*file_magic" libtool >/dev/null ; then
AC_MSG_RESULT(patching libtool to set deplibs_check_method=pass_all)
test -f libtool.old || (mv libtool libtool.old && cp libtool.old libtool)
sed -e '/^deplibs_check_method=/s/=.*/="pass_all"/' libtool >libtool.new
(test -s libtool.new || rm libtool.new) 2>/dev/null
test -f libtool.new && mv libtool.new libtool # not 2>/dev/null !!
test -f libtool || mv libtool.old libtool
fi
;;
esac
])
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