[PATCH] gcc-cross: Improve handling of unwind.h

[Richard Purdie <richard.purdie@linuxfoundation.org>]

Rather than building the whole of libgcc to obtain the unwind.h header
file, simply configure it and then install the file. This avoids copying
chunks of data around when we don't need to and building the same thing
twice.

After doing this we need to make sure the target build directory exists
in the libgcc case since it will no longer be created automatically.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
diff --git a/meta/recipes-devtools/gcc/gcc-4.8.inc b/meta/recipes-devtools/gcc/gcc-4.8.inc
index c320600..855ec26 100644
--- a/meta/recipes-devtools/gcc/gcc-4.8.inc
+++ b/meta/recipes-devtools/gcc/gcc-4.8.inc
@@ -71,7 +71,6 @@ SRC_URI = "${GNU_MIRROR}/gcc/gcc-${PV}/gcc-${PV}.tar.bz2 \
 	   file://0048-PR58854_fix_arm_apcs_epilogue.patch \
 	   file://0049-Enable-SPE-AltiVec-generation-on-powepc-linux-target.patch \
 	   file://0050-PR-target-58595.patch \
-	   file://0051-fix-unwind-race.patch \
 	  "
 SRC_URI[md5sum] = "a3d7d63b9cb6b6ea049469a0c4a43c9d"
 SRC_URI[sha256sum] = "09dc2276c73424bbbfda1dbddc62bbbf900c9f185acf7f3e1d773ce2d7e3cdc8"
diff --git a/meta/recipes-devtools/gcc/gcc-cross.inc b/meta/recipes-devtools/gcc/gcc-cross.inc
index 165230b..27ebcf6 100644
--- a/meta/recipes-devtools/gcc/gcc-cross.inc
+++ b/meta/recipes-devtools/gcc/gcc-cross.inc
@@ -41,7 +41,7 @@ do_compile () {
 	export CXXFLAGS_FOR_TARGET="${TARGET_CXXFLAGS}"
 	export LDFLAGS_FOR_TARGET="${TARGET_LDFLAGS}"
 
-	oe_runmake all-host all-target-libgcc
+	oe_runmake all-host configure-target-libgcc
 	# now generate script to drive testing
 	echo "#!/usr/bin/env sh" >${B}/${TARGET_PREFIX}testgcc
 	set >> ${B}/${TARGET_PREFIX}testgcc
@@ -141,6 +141,7 @@ INHIBIT_PACKAGE_STRIP = "1"
 BINRELPATH = "${@os.path.relpath(d.expand("${STAGING_DIR_NATIVE}${prefix_native}/bin/${MULTIMACH_TARGET_SYS}"), d.expand("${libexecdir}/gcc/${TARGET_SYS}/${BINV}"))}"
 
 do_install () {
+	( cd ${B}/${TARGET_SYS}/libgcc; oe_runmake 'DESTDIR=${D}' install-unwind_h )
 	oe_runmake 'DESTDIR=${D}' install-host
 
 	install -d ${D}${target_base_libdir}
diff --git a/meta/recipes-devtools/gcc/libgcc-common.inc b/meta/recipes-devtools/gcc/libgcc-common.inc
index c4ab885..b30bcfe 100644
--- a/meta/recipes-devtools/gcc/libgcc-common.inc
+++ b/meta/recipes-devtools/gcc/libgcc-common.inc
@@ -7,6 +7,7 @@ do_configure () {
 	install -d ${D}${base_libdir} ${D}${libdir}
 	hardlinkdir ${STAGING_INCDIR_NATIVE}/${LIBGCCBUILDTREENAME}$target/ ${B}
 	mkdir -p ${B}/${BPN}
+	mkdir -p ${B}/$target/${BPN}/
 	cd ${B}/${BPN}
 	chmod a+x ${S}/${BPN}/configure
 	${S}/${BPN}/configure ${CONFIGUREOPTS} ${EXTRA_OECONF}