https://bugs.gentoo.org/573744

From a5c6466528c060cc4660ad0319c00740db0e42ba Mon Sep 17 00:00:00 2001
From: Jeremy Huddleston Sequoia <jeremyhu@macports.org>
Date: Sun, 18 Oct 2015 21:55:39 -0700
Subject: [PATCH] libtool: fix GCC/clang linking with -fsanitize=*

References:
https://lists.gnu.org/archive/html/libtool/2014-04/msg00026.html

* build-aux/ltmain.in (func_mode_link): Pass -fsanitize=* to the
linker to allow trivial use of the clang address sanitizer.

Signed-off-by: Jeremy Huddleston Sequoia <jeremyhu@macports.org>
Copyright-paperwork-exempt: Yes
---
 build-aux/ltmain.in | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/build-aux/ltmain.in b/build-aux/ltmain.in
index 1cbe875..2a5aaad 100644
--- a/build-aux/ltmain.in
+++ b/build-aux/ltmain.in
@@ -5382,10 +5382,11 @@ func_mode_link ()
       # -O*, -g*, -flto*, -fwhopr*, -fuse-linker-plugin GCC link-time optimization
       # -specs=*             GCC specs files
       # -stdlib=*            select c++ std lib with clang
+      # -fsanitize=*         Clang/GCC memory and address sanitizer
       -64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \
       -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*|--sysroot=*| \
       -O*|-g*|-flto*|-fwhopr*|-fuse-linker-plugin|-fstack-protector*|-stdlib=*| \
-      -specs=*)
+      -specs=*|-fsanitize=*)
         func_quote_for_eval "$arg"
 	arg=$func_quote_for_eval_result
         func_append compile_command " $arg"

patch the generated file too to keep help2man from generating man pages
https://bugs.gentoo.org/556512

--- a/build-aux/ltmain.sh
+++ b/build-aux/ltmain.sh
@@ -5382,10 +5382,11 @@ func_mode_link ()
       # -O*, -g*, -flto*, -fwhopr*, -fuse-linker-plugin GCC link-time optimization
       # -specs=*             GCC specs files
       # -stdlib=*            select c++ std lib with clang
+      # -fsanitize=*         Clang/GCC memory and address sanitizer
       -64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \
       -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*|--sysroot=*| \
       -O*|-g*|-flto*|-fwhopr*|-fuse-linker-plugin|-fstack-protector*|-stdlib=*| \
-      -specs=*)
+      -specs=*|-fsanitize=*)
         func_quote_for_eval "$arg"
 	arg=$func_quote_for_eval_result
         func_append compile_command " $arg"
-- 
2.6.2