From f1684379dfaf8018d5d4c1945e292a56d0fab245 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. Signed-off-by: Thierry Reding --- configure.ac | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/configure.ac b/configure.ac index 4e2fd236..a77cf01e 100644 --- a/configure.ac +++ b/configure.ac @@ -307,7 +307,7 @@ else fi if test x$GCC = xyes -a x$intel_compiler != xyes -a x$qcc_compiler != xyes; then - LIBCRTS="-lgcc" + LIBCRTS="-lgcc_s" fi AC_MSG_CHECKING([for __builtin___clear_cache])