package/libunwind/0003-Link-libunwind-to-libgcc_s-rather-than-libgcc.patch

   1 From f1684379dfaf8018d5d4c1945e292a56d0fab245 Mon Sep 17 00:00:00 2001
   2 From: Thierry Reding <treding@nvidia.com>
   3 Date: Fri, 27 Jun 2014 08:40:33 +0200
   4 Subject: [PATCH] Link libunwind to libgcc_s rather than libgcc
   5
   6 For some architectures, -lgcc and -lgcc_s are not equivalent. On ARM for
   7 example, libgcc_s.so.1 contains some symbols needed by libunwind which
   8 are not present in libgcc.
   9
  10 This causes the following link error when building the X.Org X server
  11 with libunwind support:
  12
  13           CCLD     Xorg
  14         /usr/lib/libunwind.so: undefined reference to `__aeabi_unwind_cpp_pr0'
  15         /usr/lib/libunwind.so: undefined reference to `__aeabi_unwind_cpp_pr1'
  16
  17 Linking against libgcc_s explicitly solves this problem.
  18
  19 Signed-off-by: Thierry Reding <treding@nvidia.com>
  20 [yann.morin.1998@free.fr: backport to libunwind 1.1]
  21 Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
  22 ---
  23  configure.ac | 2 +-
  24  1 file changed, 1 insertion(+), 1 deletion(-)
  25
  26 diff --git a/configure.ac b/configure.ac
  27 index 4e2fd23..a77cf01 100644
  28 --- a/configure.ac
  29 +++ b/configure.ac
  30 @@ -258,7 +258,7 @@ else
  31
  32  if test x$GCC = xyes -a x$intel_compiler != xyes; then
  33    CFLAGS="${CFLAGS} -fexceptions -Wall -Wsign-compare"
  34 -  LIBCRTS="-lgcc"
  35 +  LIBCRTS="-lgcc_s"
  36  fi
  37  AC_MSG_RESULT([$intel_compiler])
  38
  39 --
  40 1.9.1
  41