[OE-core] [oe-core][PATCH v2] u-boot: Fix pylibfdt generation

[Joshua Watt]

u-boot attempts to build a Python library called pylibfdt. By default,
u-boot would attempt to use the build host's Python interpreter, which
causes numerous problems, not least of which is that it fails if the
host doesn't have the Python development package installed (complaining
about not being able to find Python.h)

Rectify this situation by including the proper build time dependencies
for pylibfdt and passing the proper arguments to make.

[YOCTO #12867]

Signed-off-by: Joshua Watt <JPEWhacker at gmail.com>
---
 meta/recipes-bsp/u-boot/u-boot.inc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/meta/recipes-bsp/u-boot/u-boot.inc b/meta/recipes-bsp/u-boot/u-boot.inc
index c2bcf998402..95c2f4db14d 100644
--- a/meta/recipes-bsp/u-boot/u-boot.inc
+++ b/meta/recipes-bsp/u-boot/u-boot.inc
@@ -7,8 +7,11 @@ PACKAGE_ARCH = "${MACHINE_ARCH}"
 
 inherit uboot-config uboot-extlinux-config uboot-sign deploy
 
+DEPENDS += "swig-native python-native"
+
 EXTRA_OEMAKE = 'CROSS_COMPILE=${TARGET_PREFIX} CC="${TARGET_PREFIX}gcc ${TOOLCHAIN_OPTIONS}" V=1'
 EXTRA_OEMAKE += 'HOSTCC="${BUILD_CC} ${BUILD_CFLAGS} ${BUILD_LDFLAGS}"'
+EXTRA_OEMAKE += 'PYTHON=nativepython STAGING_INCDIR=${STAGING_INCDIR_NATIVE} STAGING_LIBDIR=${STAGING_LIBDIR_NATIVE}'
 
 PACKAGECONFIG ??= "openssl"
 # u-boot will compile its own tools during the build, with specific
-- 
2.17.1