[OE-core] [pyro][PATCH] u-boot-mkimage: fix nativesdk build

[Steffen Sledz]

From: Max Krummenacher <max.oss.09 at gmail.com>

If building for nativesdk the wrong rss sysroot is used leading the
following error message.

| ERROR: oe_runmake failed
| In file included from tools/imximage.c:13:0:
| include/image.h:1024:27: fatal error: openssl/evp.h: No such file or directory
|  # include  <openssl/evp.h>

Tools needed on the build host (script/basic/fixdep) and code compiled
for the SDK machine are both built with the build host's compiler,
leading to additinal errors.

Adding CROSS_COMPILE="${HOST_PREFIX}" and using the cross-compiler for
the SDK_ARCH fixes the build error.
The resulting binary in the SDK is working.

Signed-off-by: Max Krummenacher <max.krummenacher at toradex.com>
Signed-off-by: Ross Burton <ross.burton at intel.com>
---
 meta/recipes-bsp/u-boot/u-boot-mkimage_2017.01.bb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meta/recipes-bsp/u-boot/u-boot-mkimage_2017.01.bb b/meta/recipes-bsp/u-boot/u-boot-mkimage_2017.01.bb
index 1aa95e7c86..de999e7cd5 100644
--- a/meta/recipes-bsp/u-boot/u-boot-mkimage_2017.01.bb
+++ b/meta/recipes-bsp/u-boot/u-boot-mkimage_2017.01.bb
@@ -7,7 +7,7 @@ DEPENDS = "openssl"
 
 EXTRA_OEMAKE_class-target = 'CROSS_COMPILE="${TARGET_PREFIX}" CC="${CC} ${CFLAGS} ${LDFLAGS}" HOSTCC="${BUILD_CC} ${BUILD_CFLAGS} ${BUILD_LDFLAGS}" STRIP=true V=1'
 EXTRA_OEMAKE_class-native = 'CC="${BUILD_CC} ${BUILD_CFLAGS} ${BUILD_LDFLAGS}" HOSTCC="${BUILD_CC} ${BUILD_CFLAGS} ${BUILD_LDFLAGS}" STRIP=true V=1'
-EXTRA_OEMAKE_class-nativesdk = 'CC="${BUILD_CC} ${BUILD_CFLAGS} ${BUILD_LDFLAGS}" HOSTCC="${BUILD_CC} ${BUILD_CFLAGS} ${BUILD_LDFLAGS}" STRIP=true V=1'
+EXTRA_OEMAKE_class-nativesdk = 'CROSS_COMPILE="${HOST_PREFIX}" CC="${CC} ${CFLAGS} ${LDFLAGS}" HOSTCC="${BUILD_CC} ${BUILD_CFLAGS} ${BUILD_LDFLAGS}" STRIP=true V=1'
 
 do_compile () {
 	oe_runmake sandbox_defconfig
-- 
2.13.2