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authorGravatar Yann E. MORIN <yann.morin.1998@free.fr>2014-11-16 14:29:55 +0100
committerGravatar Peter Korsgaard <peter@korsgaard.com>2014-11-17 00:11:51 +0100
commit261d8bfcd70542da9275f401c9981c16b7290686 (patch)
tree11b9d92f12c56f3377dda06bb1d4fafd627629db /package/libunwind/0003-Link-libunwind-to-libgcc_s-rather-than-libgcc.patch
parent576873b8e9c53439cb5b1b0f73406204db6cecde (diff)
downloadbuildroot-261d8bfcd70542da9275f401c9981c16b7290686.tar.gz
buildroot-261d8bfcd70542da9275f401c9981c16b7290686.tar.bz2
package/libunwind: link to libgcc_s, not libgcc
Backport a fix from upstream to link against libgcc_s instead of libgcc. Fixes ltrace build failures: http://autobuild.buildroot.net/results/a0c/a0c132f8cdea2c34ceff27606764a60c2853f644/ http://autobuild.buildroot.net/results/67f/67fbd04d6ae187861fa1bf84d3df1877c7be6fb2/ http://autobuild.buildroot.net/results/0ca/0ca564101b870e5953acb66ac832ce9e23198392/ ... Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Diffstat (limited to 'package/libunwind/0003-Link-libunwind-to-libgcc_s-rather-than-libgcc.patch')
-rw-r--r--package/libunwind/0003-Link-libunwind-to-libgcc_s-rather-than-libgcc.patch41
1 files changed, 41 insertions, 0 deletions
diff --git a/package/libunwind/0003-Link-libunwind-to-libgcc_s-rather-than-libgcc.patch b/package/libunwind/0003-Link-libunwind-to-libgcc_s-rather-than-libgcc.patch
new file mode 100644
index 0000000000..7ea25129f1
--- /dev/null
+++ b/package/libunwind/0003-Link-libunwind-to-libgcc_s-rather-than-libgcc.patch
@@ -0,0 +1,41 @@
+From f1684379dfaf8018d5d4c1945e292a56d0fab245 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.
+
+Signed-off-by: Thierry Reding <treding@nvidia.com>
+[yann.morin.1998@free.fr: backport to libunwind 1.1]
+Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
+---
+ configure.ac | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/configure.ac b/configure.ac
+index 4e2fd23..a77cf01 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -258,7 +258,7 @@ else
+
+ 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])
+
+--
+1.9.1
+