efivar: 0.7 -> 0.21

Upgrade efivar from 0.7 to 0.21.

* update HOMEPAGE and git repo.
* update license file checksum. It made FSF addresses in COPYING be URLs.
  Ref: https://github.com/rhinstaller/efivar/commit/ca88012
* add -native recipe to provide command makeguids
  and add patch for target package to use this native makeguids command
* add patch to build efivar-native with lower version gcc which doesn't
  support options '-Wmaybe-uninitialized' and '-std=gnu11'

Signed-off-by: Kai Kang <kai.kang@windriver.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

meta-oe/recipes-extended/efivar/efivar/0001-efivar-fix-for-cross-compile.patch

@@ -0,0 +1,31 @@
+From 7036e8b0dca61432970789e5397b6fb02b362c2b Mon Sep 17 00:00:00 2001
+From: Kai Kang <kai.kang@windriver.com>
+Date: Fri, 25 Sep 2015 18:14:31 +0800
+Subject: [PATCH] efivar: fix for cross compile
+
+It builds and calls elf file makeguids to generate a header file which
+doesn't work for cross compile. Fix it.
+
+Signed-off-by: Kai Kang <kai.kang@windriver.com>
+---
+ src/Makefile | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/Makefile b/src/Makefile
+index 6eac858..ef4eb1d 100644
+--- a/src/Makefile
++++ b/src/Makefile
+@@ -65,8 +65,8 @@ makeguids.o : makeguids.c
+ makeguids : makeguids.o fakeguid.o
+ 	$(CC) $(cflags) -o $@ $^ -ldl
+ 
+-include/efivar/efivar-guids.h : makeguids guids.txt
+-	./makeguids guids.txt guids.bin names.bin guid-symbols.S $@
++include/efivar/efivar-guids.h : guids.txt
++	makeguids guids.txt guids.bin names.bin guid-symbols.S $@
+ 
+ guidlist.o : guids.S include/efivar/efivar-guids.h
+ 	$(CC) $(cflags) -c -o guidlist.o guids.S
+-- 
+2.6.0.rc2.10.gf4d9753
+

meta-oe/recipes-extended/efivar/efivar/efivar-drop-options-not-supported-by-lower-version-gcc.patch

@@ -0,0 +1,71 @@
+gcc options '-Wmaybe-uninitialized' and '-std=gnu11' are not recognized by gcc
+whose version is lower than 4.6, such as on Ubuntu 12.04. Drop them for backward
+compatible.
+
+Upstream-Status: Pending
+
+Signed-off-by: Kai Kang <kai.kang@windriver.com>
+---
+diff --git a/Make.defaults b/Make.defaults
+index cc2baa9..118ae56 100644
+--- a/Make.defaults
++++ b/Make.defaults
+@@ -10,10 +10,9 @@ CFLAGS	?= -O2 -g
+ 
+ ARCH = $(shell uname -m)
+ clang_cflags =
+-gcc_cflags = -Wmaybe-uninitialized
+ cflags	:= $(CFLAGS) \
+ 	-Werror -Wall -Wsign-compare -Wstrict-aliasing \
+-	-std=gnu11 -fshort-wchar -fPIC \
++	-fshort-wchar -fPIC \
+ 	-fvisibility=hidden \
+ 	-D_GNU_SOURCE -I${TOPDIR}/src/include/efivar/ \
+ 	$(if $(filter $(CC),clang),$(clang_cflags),) \
+diff --git a/src/guid.h b/src/guid.h
+index 9542ee1..0817991 100644
+--- a/src/guid.h
++++ b/src/guid.h
+@@ -31,7 +31,8 @@ static inline int
+ real_isspace(char c)
+ {
+ 	char spaces[] = " \f\n\r\t\v";
+-	for (int i = 0; spaces[i] != '\0'; i++)
++	int i;
++	for (i = 0; spaces[i] != '\0'; i++)
+ 		if (c == spaces[i])
+ 			return 1;
+ 	return 0;
+@@ -59,7 +60,8 @@ check_sanity(const char *text, size_t len)
+ static inline int
+ check_segment_sanity(const char *text, size_t len)
+ {
+-	for(unsigned int i = 0; i < len; i++) {
++	unsigned int i;
++	for(i = 0; i < len; i++) {
+ 		if (text[i] >= '0' && text[i] <= '9')
+ 			continue;
+ 		/* "| 0x20" is tolower() without having to worry about
+diff --git a/src/makeguids.c b/src/makeguids.c
+index e9acf15..7e16cb2 100644
+--- a/src/makeguids.c
++++ b/src/makeguids.c
+@@ -150,7 +150,8 @@ main(int argc, char *argv[])
+ 
+ 	fprintf(header, "#ifndef EFIVAR_GUIDS_H\n#define EFIVAR_GUIDS_H 1\n\n");
+ 
+-	for (unsigned int i = 0; i < line-1; i++) {
++	unsigned int i, j;
++	for (i = 0; i < line-1; i++) {
+ 		if (!strcmp(outbuf[i].symbol, "efi_guid_zero"))
+ 			fprintf(symout, "\t.globl %s\n"
+ 					"\t.data\n"
+@@ -176,7 +177,7 @@ main(int argc, char *argv[])
+ 			fprintf(symout, "efi_guid_empty:\n");
+ 
+ 		uint8_t *guid_data = (uint8_t *) &outbuf[i].guid;
+-		for (unsigned int j = 0; j < sizeof (efi_guid_t); j++)
++		for (j = 0; j < sizeof (efi_guid_t); j++)
+ 			fprintf(symout,"\t.byte 0x%02x\n", guid_data[j]);
+ 
+ 		fprintf(symout, "%s_end:\n", outbuf[i].symbol);

meta-oe/recipes-extended/efivar/efivar_0.21.bb

@@ -0,0 +1,29 @@
+SUMMARY = "Tools to manipulate UEFI variables"
+DESCRIPTION = "efivar provides a simple command line interface to the UEFI variable facility"
+HOMEPAGE = "https://github.com/rhinstaller/efivar"
+
+LICENSE = "LGPLv2.1"
+LIC_FILES_CHKSUM = "file://COPYING;md5=6626bb1e20189cfa95f2c508ba286393"
+
+DEPENDS_class-target = "popt efivar-native"
+
+SRCREV = "aab6c2a64d90b6e5a63661fb5bd6be8d878b0784"
+SRC_URI = "git://github.com/rhinstaller/efivar.git"
+SRC_URI_append_class-target = " file://0001-efivar-fix-for-cross-compile.patch"
+SRC_URI_append_class-native = " file://efivar-drop-options-not-supported-by-lower-version-gcc.patch"
+
+S = "${WORKDIR}/git"
+
+do_install() {
+    oe_runmake install DESTDIR=${D}
+}
+
+do_compile_class-native() {
+    oe_runmake -C src makeguids
+}
+
+do_install_class-native() {
+    install -D -m 0755 ${B}/src/makeguids ${D}${bindir}/makeguids
+}
+
+BBCLASSEXTEND = "native"

meta-oe/recipes-extended/efivar/efivar_git.bb

@@ -1,18 +0,0 @@
-SUMMARY = "Tools to manipulate UEFI variables"
-DESCRIPTION = "efivar provides a simple command line interface to the UEFI variable facility"
-HOMEPAGE = "https://github.com/vathpela/efivar"
-
-LICENSE = "LGPLv2.1"
-LIC_FILES_CHKSUM = "file://COPYING;md5=a6f89e2100d9b6cdffcea4f398e37343"
-
-DEPENDS = "popt"
-
-SRCREV = "c9e1f24a81b5374408bca5616402276e47171cf7"
-PV = "0.7+git${SRCPV}"
-SRC_URI = "git://github.com/vathpela/efivar.git"
-
-S = "${WORKDIR}/git"
-
-do_install() {
-    oe_runmake install DESTDIR=${D}
-}