[oe] [PATCH][RFC][meta-oe] luajit: fix build II

[Martin Jansa]

* previous fix didn't work very well, because host version really needs
  to use the same pointer size, so it's better to disable native builds
  completely and let HOST_LUA to be compiled in target build with
  correct params
* EXTRA_OEMAKE_append_mips64 = ' HOST_CC="${BUILD_CC} -m32"'
  looks like mistake, is mips64 using 32bit pointers?

Signed-off-by: Martin Jansa <Martin.Jansa at gmail.com>
---
 meta-oe/recipes-devtools/luajit/luajit_2.0.4.bb | 32 +++++++++++++------------
 1 file changed, 17 insertions(+), 15 deletions(-)

diff --git a/meta-oe/recipes-devtools/luajit/luajit_2.0.4.bb b/meta-oe/recipes-devtools/luajit/luajit_2.0.4.bb
index 9609469..4f1345d 100644
--- a/meta-oe/recipes-devtools/luajit/luajit_2.0.4.bb
+++ b/meta-oe/recipes-devtools/luajit/luajit_2.0.4.bb
@@ -13,26 +13,28 @@ S = "${WORKDIR}/LuaJIT-${PV}"
 
 inherit pkgconfig binconfig
 
-BBCLASSEXTEND = "native"
-
 do_configure_prepend() {
     sed -i 's:PREFIX= /usr/local:PREFIX= ${prefix}:g' ${S}/Makefile
     sed -i 's:MULTILIB= lib:MULTILIB= ${baselib}:g' ${S}/Makefile
 }
 
-EXTRA_OEMAKE = 'CROSS=${HOST_PREFIX} \
-                TARGET_CFLAGS="${TOOLCHAIN_OPTIONS} ${HOST_CC_ARCH}" \
-                TARGET_LDFLAGS="${TOOLCHAIN_OPTIONS}" \
-                TARGET_SHLDFLAGS="${TOOLCHAIN_OPTIONS}"'
-EXTRA_OEMAKE_append_powerpc = ' HOST_CC="${BUILD_CC} -m32"'
-EXTRA_OEMAKE_append_x86 = ' HOST_CC="${BUILD_CC} -m32"'
-EXTRA_OEMAKE_append_x86-64 = ' HOST_CC="${BUILD_CC}"'
-EXTRA_OEMAKE_append_powerpc64 = ' HOST_CC="${BUILD_CC}"'
-EXTRA_OEMAKE_append_arm = ' HOST_CC="${BUILD_CC} -m32"'
-EXTRA_OEMAKE_append_mips64 = ' HOST_CC="${BUILD_CC} -m32"'
-
-DEPENDS_append_class_target = " luajit-native"
-EXTRA_OEMAKE_append_class_target = " HOST_LUA=luajit"
+# http://luajit.org/install.html#cross
+# Host luajit needs to be compiled with the same pointer size
+# If you want to cross-compile to any 32 bit target on an x64 OS,
+# you need to install the multilib development package (e.g.
+# libc6-dev-i386 on Debian/Ubuntu) and build a 32 bit host part
+# (HOST_CC="gcc -m32").
+BUILD_CC_ARCH_append_powerpc = ' -m32'
+BUILD_CC_ARCH_append_x86 = ' -m32'
+BUILD_CC_ARCH_append_arm = ' -m32'
+
+EXTRA_OEMAKE_append_class-target = '\
+    CROSS=${HOST_PREFIX} \
+    HOST_CC="${BUILD_CC} ${BUILD_CC_ARCH}" \
+    TARGET_CFLAGS="${TOOLCHAIN_OPTIONS} ${TARGET_CC_ARCH}" \
+    TARGET_LDFLAGS="${TOOLCHAIN_OPTIONS}" \
+    TARGET_SHLDFLAGS="${TOOLCHAIN_OPTIONS}" \
+'
 
 do_compile () {
     oe_runmake
-- 
2.7.3