| From 508ca17a7be01d1cc960d9a07d0af4513948fb8d Mon Sep 17 00:00:00 2001 |
| From: Thierry Reding <treding@nvidia.com> |
| 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 <treding@nvidia.com> |
| Signed-off-by: Jonathan Liu <net147@gmail.com> |
| --- |
| 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 |
| |