[PATCH[ libunistring: Fix parallel make issue

[PATCH[ libunistring: Fix parallel make issue

[Richard Purdie]

See patch header for the full description of the parallel make issue this resolves.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
diff --git a/meta/recipes-support/libunistring/libunistring/parallelmake.patch b/meta/recipes-support/libunistring/libunistring/parallelmake.patch
new file mode 100644
index 0000000..21025b8
--- a/dev/null
+++ b/meta/recipes-support/libunistring/libunistring/parallelmake.patch
@@ -0,0 +1,26 @@
+Fix a parallel make race where cdefs.h uses the unused-parameter.h header file
+but has no dependency listed. This can result in an empty cdefs.h file which 
+results in a build failure like:
+
+| In file included from striconveh.c:30:0:
+| unistr.h:193:48: error: expected ';', ',' or ')' before '_GL_UNUSED_PARAMETER'
+| In file included from striconveh.c:30:0:
+| unistr.h:263:54: error: expected ';', ',' or ')' before '_GL_UNUSED_PARAMETER'
+
+Upstream-Status: Pending
+
+RP 2012/4/12
+
+Index: libunistring-0.9.3/lib/Makefile.am
+===================================================================
+--- libunistring-0.9.3.orig/lib/Makefile.am	2012-04-12 07:45:41.450059820 +0000
++++ libunistring-0.9.3/lib/Makefile.am	2012-04-12 07:48:45.434055559 +0000
+@@ -157,7 +157,7 @@
+ 
+ # unistring/cdefs.h is not public, but is included by other header files.
+ nobase_nodist_include_HEADERS += unistring/cdefs.h
+-unistring/cdefs.h : unistring/cdefs.in.h
++unistring/cdefs.h : unistring/cdefs.in.h $(UNUSED_PARAMETER_H)
+ 	@MKDIR_P@ unistring
+ 	rm -f $@-t $@
+ 	sed -e '/definition of _GL_UNUSED_PARAMETER/r $(UNUSED_PARAMETER_H)' \
diff --git a/meta/recipes-support/libunistring/libunistring_0.9.3.bb b/meta/recipes-support/libunistring/libunistring_0.9.3.bb
index eabe115..02a28f4 100644
--- a/meta/recipes-support/libunistring/libunistring_0.9.3.bb
+++ b/meta/recipes-support/libunistring/libunistring_0.9.3.bb
@@ -17,12 +17,13 @@ LICENSE = "GPLv3&LGPLv3"
 LIC_FILES_CHKSUM = "file://COPYING;md5=d32239bcb673463ab874e80d47fae504 \
                     file://COPYING.LIB;md5=6a6a8e020838b23406c81b19c1d46df6" 
 
-SRC_URI = "${GNU_MIRROR}/libunistring/libunistring-${PV}.tar.gz"
+SRC_URI = "${GNU_MIRROR}/libunistring/libunistring-${PV}.tar.gz \
+           file://parallelmake.patch"
 
 SRC_URI[md5sum] = "db8eca3b64163abadf8c40e5cecc261f"
 SRC_URI[sha256sum] = "610d3ec724fbdaa654afe3cff20b9f4d504be3fd296fded2e0f7f764041006a3"
 
-PR = "r1"
+PR = "r2"
 
 inherit autotools
 BBCLASSEXTEND = "native nativesdk"