diff options
Diffstat (limited to 'meta/recipes-support/libunwind/libunwind/Add-AO_REQUIRE_CAS-to-fix-build-on-ARM-v6.patch')
| -rw-r--r-- | meta/recipes-support/libunwind/libunwind/Add-AO_REQUIRE_CAS-to-fix-build-on-ARM-v6.patch | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/meta/recipes-support/libunwind/libunwind/Add-AO_REQUIRE_CAS-to-fix-build-on-ARM-v6.patch b/meta/recipes-support/libunwind/libunwind/Add-AO_REQUIRE_CAS-to-fix-build-on-ARM-v6.patch deleted file mode 100644 index 0dff2c86dc..0000000000 --- a/meta/recipes-support/libunwind/libunwind/Add-AO_REQUIRE_CAS-to-fix-build-on-ARM-v6.patch +++ /dev/null @@ -1,62 +0,0 @@ -From 24484e80b3e329c9edee1995e102f8612eedb79c Mon Sep 17 00:00:00 2001 -From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> -Date: Tue, 13 May 2014 23:32:27 +0200 -Subject: [PATCH] Add AO_REQUIRE_CAS to fix build on ARM < v6 - -ARM earlier than ARMv6, such as ARMv4 and ARMv5 do not provide -optimize atomic operations in libatomic_ops. Since libunwind is using -such operations, it should define AO_REQUIRE_CAS before including -<atomic_ops.h> so that libatomic_ops knows it should use emulated -atomic operations instead (even though they are obviously a lot more -expensive). - -Also, while real atomic operations are all inline functions and -therefore linking against libatomic_ops was not required, the emulated -atomic operations actually require linking against libatomic_ops, so -the commented AC_CHECK_LIB test in acinclude.m4 is uncommented to make -sure we link against libatomic_ops. - -Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> -Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com> - -Upstream-Status: Pending -Taken from: -https://raw.githubusercontent.com/rdnetto/teapot-buildroot/master/package/libunwind/libunwind-02-Add-AO_REQUIRE_CAS-to-fix-build-on-ARM-v6.patch - ---- - acinclude.m4 | 8 +------- - include/libunwind_i.h | 1 + - 2 files changed, 2 insertions(+), 7 deletions(-) - -diff --git a/acinclude.m4 b/acinclude.m4 -index 497f7c2..9c15af1 100644 ---- a/acinclude.m4 -+++ b/acinclude.m4 -@@ -22,11 +22,5 @@ fi]) - AC_DEFUN([CHECK_ATOMIC_OPS], - [dnl Check whether the system has the atomic_ops package installed. - AC_CHECK_HEADERS(atomic_ops.h) --# --# Don't link against libatomic_ops for now. We don't want libunwind --# to depend on libatomic_ops.so. Fortunately, none of the platforms --# we care about so far need libatomic_ops.a (everything is done via --# inline macros). --# --# AC_CHECK_LIB(atomic_ops, main) -+ AC_CHECK_LIB(atomic_ops, main) - ]) -diff --git a/include/libunwind_i.h b/include/libunwind_i.h -index 23f615e..deabdfd 100644 ---- a/include/libunwind_i.h -+++ b/include/libunwind_i.h -@@ -95,6 +95,7 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ - (pthread_mutex_unlock != NULL ? pthread_mutex_unlock (l) : 0) - - #ifdef HAVE_ATOMIC_OPS_H -+# define AO_REQUIRE_CAS - # include <atomic_ops.h> - static inline int - cmpxchg_ptr (void *addr, void *old, void *new) --- -1.9.2 - |