From 508ca17a7be01d1cc960d9a07d0af4513948fb8d Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 27 Jun 2014 08:40:33 +0200 Subject: [PATCH] Link libunwind to libgcc_s rather than libgcc For some architectures, -lgcc and -lgcc_s are not equivalent. On ARM for example, libgcc_s.so.1 contains some symbols needed by libunwind which are not present in libgcc. This causes the following link error when building the X.Org X server with libunwind support: CCLD Xorg /usr/lib/libunwind.so: undefined reference to `__aeabi_unwind_cpp_pr0' /usr/lib/libunwind.so: undefined reference to `__aeabi_unwind_cpp_pr1' Linking against libgcc_s explicitly solves this problem. Upstream-Status: Backport Signed-off-by: Thierry Reding Signed-off-by: Jonathan Liu --- configure.ac | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/configure.ac b/configure.ac index cffe19b..3beb5f2 100644 --- a/configure.ac +++ b/configure.ac @@ -258,7 +258,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[#ifndef __INTEL_COMPILER if test x$GCC = xyes -a x$intel_compiler != xyes; then CFLAGS="${CFLAGS} -fexceptions -Wall -Wsign-compare" - LIBCRTS="-lgcc" + LIBCRTS="-lgcc_s" fi AC_MSG_RESULT([$intel_compiler]) -- 2.3.2