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(C) 2007 guidod
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Guido U. Draheim <>


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Category ac-archive's Miscellaneous (released)


Cross-compiling to win32 from a unix system reveals a bug - the path-separator has been set to ";" depending on the target system. However, the crossgcc search_path_spec works in a unix-environment with unix-style directories and unix-stylish path_separator. The result: the search_path_spec is a single word still containing the ":" separators.

This macro fixes the situation: when we see the libtool PATH_SEP to be ":" and search_path_spec to contain ":" characters, then these are replaced with spaces to let the resulting string work as a for-loop argument in libtool scripts that resolve -no-undefined libraries.

Later libtool generations have fixed the situation with using $PATH_SEPARATOR in the first place as the original path delimiter that will be scanned for and replaced into spaces.

M4 Source Code
[# patch libtool to fix sys_lib_search_path (e.g. crosscompiling a win32 dll)
if test "_$PATH_SEPARATOR" = "_:" ; then
  if grep "^sys_lib_search_path_spec.*:" libtool &gt;/dev/null ; then
AC_MSG_RESULT(patching libtool to fix sys_lib_search_path_spec)
    test -f libtool.old || (mv libtool libtool.old &amp;&amp; cp libtool.old libtool)
    sed -e "/^sys_lib_search_path_spec/s/:/ /g" libtool &gt;
    (test -s || rm 2&gt;/dev/null
    test -f &amp;&amp; mv libtool # not 2&gt;/dev/null !!
    test -f libtool     || mv libtool.old libtool