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Bug 2914

Summary: --disable-assembly (#undef SDL_ASSEMBLY_ROUTINES) does not work
Product: SDL Reporter: john
Component: buildAssignee: Sam Lantinga <slouken>
Status: NEW --- QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2    
Version: don't know   
Hardware: All   
OS: All   

Description john 2015-03-18 19:22:22 UTC 
Instances of asm, __asm__, and __asm appear all over the code unguarded by a preprocessor check for defined(SDL_ASSEMBLY_ROUTINES). The --disable-assembly flag is supposed to eliminate them by #undef-ing SDL_ASSEMBLY_ROUTINES.

This fails to compile in some cases. e.g., src/cpuinfo/SDL_cpuinfo.c will not compile under clang on Linux x86_64 when --disable-assembly is specified. The fix is trivial.

To fix: Insert a preprocessor check for "defined(SDL_ASSEMBLY_ROUTINES)" wherever asm, __asm__, or __asm appears. That will fix most of them. There are a few other places that will slip through, e.g., USE_ASM_STRETCH in src/video/SDL_stretch.c