From: Khem Raj <raj.khem@gmail.com>
Subject: [PATCH 08/12] libtool: Check for static libs for internal compiler libraries

Libtool checks only for libraries linked as -l* when trying to
find internal compiler libraries. Clang, however uses the absolute
path to link its internal libraries e.g. compiler_rt. This patch
handles clang's statically linked libraries when finding internal
compiler libraries.

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

https://crbug.com/749263
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=27866

Upstream-Status: Submitted [https://lists.gnu.org/archive/html/libtool-patches/2021-10/msg00016.html]

diff --git a/m4/libtool.m4 b/m4/libtool.m4
index 180dd9d1..022c1292 100644
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -7560,7 +7560,7 @@ if AC_TRY_EVAL(ac_compile); then
   for p in `eval "$output_verbose_link_cmd"`; do
     case $prev$p in
 
-    -L* | -R* | -l*)
+    -L* | -R* | -l* | */libclang_rt.*.a)
        # Some compilers place space between "-{L,R}" and the path.
        # Remove the space.
        if test x-L = "$p" ||
-- 
2.25.1