2 files changed, 38 insertions, 0 deletions

diff --git a/meta/recipes-support/libunwind/libunwind-1.1/musl-header-conflict.patch b/meta/recipes-support/libunwind/libunwind-1.1/musl-header-conflict.patch
new file mode 100644
index 0000000000..79f63fd84e
--- /dev/null
+++ b/meta/recipes-support/libunwind/libunwind-1.1/musl-header-conflict.patch
@@ -0,0 +1,37 @@
+If you:
+
+TCLIBC=musl bitbake unwind
+TCLIBC=musl bitbake gcc-runtime -c cleansstate
+TCLIBC=musl bitbake gcc-runtime
+
+you will see libstdc++ fail to build due to finding libunwind's header file.
+
+Khem: "When we build any of gcc components they expect to use internal version 
+and that works with glibc based gcc since the search headers first look into gcc 
+headers, however with musl the gcc headers are searched after the standard 
+headers ( which is by design the right thing )."
+
+This patch hacks around the issue by looking for a define used during gcc-runtime's 
+build and skipping to the internal header in that case.
+
+[YOCTO #10129]
+
+RP 2016/8/18
+
+Upstream-Status: Inappropriate [really need to fix gcc]
+
+Index: git/include/unwind.h
+===================================================================
+--- git.orig/include/unwind.h
++++ git/include/unwind.h
+@@ -23,6 +23,10 @@ LIABLE FOR ANY CLAIM, DAMAGES OR OTHER L
+ OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
+ 
++#ifdef _GLIBCXX_SHARED
++#include_next <unwind.h>
++#endif
++
+ #ifndef _UNWIND_H
+ #define _UNWIND_H
+ 
diff --git a/meta/recipes-support/libunwind/libunwind_1.1.bb b/meta/recipes-support/libunwind/libunwind_1.1.bb
index 1e76c1a8c4..d9da1ad9a9 100644
--- a/meta/recipes-support/libunwind/libunwind_1.1.bb
+++ b/meta/recipes-support/libunwind/libunwind_1.1.bb
@@ -15,6 +15,7 @@ SRC_URI_append_libc-musl = "\
            file://0001-x86-Stub-out-x86_local_resume.patch \
            file://0001-disable-tests.patch \
            file://0001-Fix-build-on-mips-musl.patch \
+           file://musl-header-conflict.patch \
 "
 SRC_URI[md5sum] = "fb4ea2f6fbbe45bf032cd36e586883ce"
 SRC_URI[sha256sum] = "9dfe0fcae2a866de9d3942c66995e4b460230446887dbdab302d41a8aee8d09a"