On Tue, 2007-08-21 at 09:30 -0500, Peter O'Gorman wrote:
> Hi,
> Albert pointed out to me yesterday that while, with 1.5.24 we now add
> the correct directories to sys_lib_search_path_spec, they do not get
> added to sys_lib_dlsearch_path_spec, resulting in libtool putting, for
> example, /usr/lib64 in RPATH.
>
> Red Hat have a patch for this, but it is specific to redhat:
> http://www.redhat.com/archives/fedora-extras-commits/2007-July/msg04567.html
>
> So, it looks like we need to revisit the methods of calculating
> sys_lib_dlsearch_path_spec in a distro independent fashion.
>
> The proposals so far:
> http://lists.gnu.org/archive/html/libtool/2007-06/msg00025.html
>
> The only worries I have with Olly's proposal are that it can be slow
> (but it is only run once at configure time, so hmm) and that I am not
> convinced that it outputs the directories in the order that ld.so
> searches.
Here is yet another alternative.
Feedback appreciated.
Peter
Index: libtool.m4
===================================================================
RCS file: /sources/libtool/libtool/Attic/libtool.m4,v
retrieving revision 1.314.2.187
diff -u -r1.314.2.187 libtool.m4
--- libtool.m4 16 Aug 2007 18:23:24 -0000 1.314.2.187
+++ libtool.m4 22 Aug 2007 07:05:29 -0000
@@ -1622,10 +1622,16 @@
# before this can be enabled.
hardcode_into_libs=yes
+ echo "int main() { return 0; }" > conftest.c
+ $CC $CFLAGS $LDFLAGS $CPPFLAGS -o conftest conftest.c -lc 2>&1 >/dev/null
+ rm conftest.c
+ libsuff=`ldd conftest 2>/dev/null | awk '/libc\.so/ {n=split([$]3,x,"/"); for (i=0; i < n; i++) { if (x[[i]] == "lib64") {print "64"}}}'`
+ rm conftest
+ sys_lib_dlsearch_path_spec="/usr/lib${libsuff} /lib${libsuff}"
# Append ld.so.conf contents to the search path
if test -f /etc/ld.so.conf; then
lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \[$]2)); skip = 1; } { if (!skip) print \[$]0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[ ]*hwcap[ ]/d;s/[:, ]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;/^$/d' | tr '\n' ' '`
- sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra"
+ sys_lib_dlsearch_path_spec="$sys_lib_dlsearch_path_spec $lt_ld_extra"
fi
# We used to test for /lib/ld.so.1 and disable shared libraries on
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