Bug 67921 - [bisected commit 883987] crosscompiling fails with util/u_cpu_detect.c:247:4: error: 'asm' undeclared (first use in this function)
Summary: [bisected commit 883987] crosscompiling fails with util/u_cpu_detect.c:247:4:...
Status: RESOLVED FIXED
Alias: None
Product: Mesa
Classification: Unclassified
Component: Other (show other bugs)
Version: git
Hardware: Other All
: medium normal
Assignee: mesa-dev
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Reported: 2013-08-08 22:21 UTC by Alexandre Demers
Modified: 2013-08-08 23:33 UTC (History)
1 user (show)

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Description Alexandre Demers 2013-08-08 22:21:38 UTC 
Commit 883987503fc79691398eb024f37480ff083805a3 breaks crosscompilation when building with the following:
baseExec="./autogen.sh --prefix=/usr \
		--enable-debug \
		--enable-osmesa \
		--enable-gbm \
		--enable-xvmc \
		--enable-vdpau \
		--enable-gles1 \
		--enable-gles2 \
		--enable-openvg \
		--enable-xorg \
		--enable-xa \
		--enable-egl \
		--enable-gallium-egl \
		--enable-glx-tls \
		--enable-texture-float \
		--enable-wgl \
		--with-gallium-drivers=r600,swrast,svga \
		--with-dri-drivers= \
		--with-egl-platforms=x11,drm,wayland"
	export CFLAGS='-m32'
	export CXXFLAGS='-m32'
	export LLVM_CONFIG='/usr/bin/llvm-config32'
	export PKG_CONFIG_PATH="/usr/lib/i386-linux-gnu/pkgconfig"
	Exec32="$baseExec --enable-32-bit --build=x86_64-pc-linux-gnu --host=i686-pc-linux-gnu --libdir=/usr/lib/i386-linux-gnu --includedir=/usr/include/i386-linux-gnu"
	$Exec32

---
It fails with:
  CC       util/u_cpu_detect.lo
util/u_cpu_detect.c: In function 'sse2_has_daz':
util/u_cpu_detect.c:247:4: error: 'asm' undeclared (first use in this function)
    asm volatile ("fxsave %0" :: "m" (fxarea));
    ^
util/u_cpu_detect.c:247:4: note: each undeclared identifier is reported only once for each function it appears in
util/u_cpu_detect.c:247:8: error: expected ';' before 'volatile'
    asm volatile ("fxsave %0" :: "m" (fxarea));
        ^
make[3]: *** [util/u_cpu_detect.lo] Error 1

---
However, compiling normally for my 64bit architecture works fine.


Bad commit 883987503fc79691398eb024f37480ff083805a3
util: try much harder to set DAZ flag
Author
Roland Scheidegger<sroland@vmware.com>
Author date
8/5/13 9:30 PM
Comment 1 Roland Scheidegger 2013-08-08 23:33:07 UTC 
(In reply to comment #0)
> However, compiling normally for my 64bit architecture works fine.
Yes, the code in question is never compiled on x64. Weird though when I hacked around the ifdefs to test it on x64 it worked just fine.
Anyway fixed with 8f40fa0e7f47093d6e93ca4dd12569a6f948dae6.

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