[OE-core] [PATCH V2] libjpeg-turbo: don't depend on NASM for non-x86 targets

[Ross Burton]

NASM is a x86-specific assembler so it is only required when building for x86
targets.  Use x86-architecture and class-target overrides to depend on NASM, but
explicitly disable and don't depend on it for native as complications in the
native overrides meant NASM was enabled for x86-64 but disabled for x86 (this
will be investigated later).

Original patch by Tristan Van Berkom <tristan.vanberkom at codethink.co.uk>, more
work to solve selftest failures by Richard Purdie
<richard.purdie at linuxfoundation.org>.  I just wrote a nice commit message.

Signed-off-by: Ross Burton <ross.burton at intel.com>
---
 meta/recipes-graphics/jpeg/libjpeg-turbo_1.5.1.bb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/meta/recipes-graphics/jpeg/libjpeg-turbo_1.5.1.bb b/meta/recipes-graphics/jpeg/libjpeg-turbo_1.5.1.bb
index 70d38f4..6f407cc 100644
--- a/meta/recipes-graphics/jpeg/libjpeg-turbo_1.5.1.bb
+++ b/meta/recipes-graphics/jpeg/libjpeg-turbo_1.5.1.bb
@@ -7,7 +7,8 @@ LIC_FILES_CHKSUM = "file://cdjpeg.h;endline=13;md5=05bab7c7ad899d85bfba60da1a127
                     file://jpeglib.h;endline=16;md5=f67d70e547a2662c079781c72f877f72 \
                     file://djpeg.c;endline=11;md5=b90b6d2b4119f9e5807cd273f525d2af \
 "
-DEPENDS = "nasm-native"
+DEPENDS_append_x86-64_class-target = " nasm-native"
+DEPENDS_append_x86_class-target    = " nasm-native"
 
 SRC_URI = "${SOURCEFORGE_MIRROR}/${BPN}/${BPN}-${PV}.tar.gz \
            file://fix-mips.patch"
@@ -26,6 +27,9 @@ RCONFLICTS_${PN} += "jpeg"
 
 inherit autotools pkgconfig
 
+# Add nasm-native dependency consistently for all build arches is hard
+EXTRA_OECONF_append_class-native = "--without-simd"
+
 # Work around missing x32 ABI support
 EXTRA_OECONF_append_class-target = " ${@bb.utils.contains("TUNE_FEATURES", "mx32", "--without-simd", "", d)}"
 
-- 
2.8.1