uclibc_git.bb: Fix compilation on arm when using thumb instruction set

(From OE-Core rev: 7011d80c6cabc304e06237d167143d577fdd2570)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/meta/recipes-core/uclibc/uclibc-git/compile-arm-fork-with-O2.patch b/meta/recipes-core/uclibc/uclibc-git/compile-arm-fork-with-O2.patch
new file mode 100644
index 0000000000..429f27dfc4
--- /dev/null
+++ b/meta/recipes-core/uclibc/uclibc-git/compile-arm-fork-with-O2.patch
@@ -0,0 +1,21 @@
+When compiling in thumb mode for arm with -Os gcc gives up since it can not find registers
+to spill. So we use -O2 option for compiling fork.c It may be addressable is gcc.
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+Upstream-Status: Pending
+
+diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/arm/Makefile.arch
+index 329d8a9..41e3646 100644
+--- a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/Makefile.arch
++++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arm/Makefile.arch
+@@ -30,3 +30,9 @@ CFLAGS-OMIT-libc-lowlevellock.c = -DNOT_IN_libc -DIS_IN_libpthread
+ # This macro should be alternatively implemented in THUMB
+ # assembly.
+ ASFLAGS-vfork.S = -marm
++
++# For arm fork.c does not compile with -Os when in compiling
++# in thumb1 mode
++ifeq ($(COMPILE_IN_THUMB_MODE),y)
++CFLAGS-fork.c = -O2
++endif