From ea1e2c5e18dd0790fb9b2af2bd947f4981736dc2 Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Sat, 7 Nov 2015 20:23:49 -0500
Subject: [PATCH] work around toolchains with broken visibility in
 libgcc/libpcc

---
 configure | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/configure b/configure
index dece1d09..ee217713 100755
--- a/configure
+++ b/configure
@@ -534,6 +534,11 @@ tryldflag LDFLAGS_AUTO -Wl,--hash-style=both
 # runtime library; implementation error is also a possibility.
 tryldflag LDFLAGS_AUTO -Wl,--no-undefined
 
+# Avoid exporting symbols from compiler runtime libraries. They
+# should be hidden anyway, but some toolchains including old gcc
+# versions built without shared library support and pcc are broken.
+tryldflag LDFLAGS_AUTO -Wl,--exclude-libs=ALL
+
 test "$shared" = "no" || {
 # Disable dynamic linking if ld is broken and can't do -Bsymbolic-functions
 LDFLAGS_DUMMY=
-- 
2.25.1