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Bug 864

Summary: SDL 1.2.4 fails to build on Mac OS X 10.5/x84_64
Product: SDL Reporter: Max Horn <max>
Component: *don't know*Assignee: Sam Lantinga <slouken>
Status: RESOLVED INVALID QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2    
Version: 1.2.14   
Hardware: x86_64   
OS: Mac OS X 10.5 (Intel)   

Description Max Horn 2009-10-20 15:53:16 UTC 
Just got a bug report by a user of my Fink package for SDL reporting that SDL 1.2.14 does not build on on Mac OS X 10.5/x84_64.

Looking at it, it seems that in revision 4860 a change was made that was meant to fix building on 32bit (and which partially reverted a change made before to fix building on 64bit) seems to be the cause. Specifically, this one:

  <http://www.libsdl.org/cgi/viewvc.cgi/trunk/SDL/src/cpuinfo/SDL_cpuinfo.c?r1=4847&r2=4860>


This is the build error:

/bin/sh ./libtool --mode=compile gcc-4.0 -g -O2 -I/sw64/include -I./include -D_GNU_SOURCE=1 -DTARGET_API_MAC_CARBON -DTARGET_API_MAC_OSX -fvisibility=hidden  -I/usr/X11R6/include -DXTHREADS -D_THREAD_SAFE -force_cpusubtype_ALL -fpascal-strings -c ./src/cpuinfo/SDL_cpuinfo.c -o build/SDL_cpuinfo.lo
libtool: compile:  gcc-4.0 -g -O2 -I/sw64/include -I./include -D_GNU_SOURCE=1 -DTARGET_API_MAC_CARBON -DTARGET_API_MAC_OSX -fvisibility=hidden -I/usr/X11R6/include -DXTHREADS -D_THREAD_SAFE -force_cpusubtype_ALL -fpascal-strings -c ./src/cpuinfo/SDL_cpuinfo.c -fno-common -DPIC -o build/.libs/SDL_cpuinfo.o
./src/cpuinfo/SDL_cpuinfo.c: In function 'SDL_GetCPUFeatures':
./src/cpuinfo/SDL_cpuinfo.c:167: error: PIC register '%rbx' clobbered in 'asm'
./src/cpuinfo/SDL_cpuinfo.c:167: error: PIC register '%rbx' clobbered in 'asm'
./src/cpuinfo/SDL_cpuinfo.c:236: error: PIC register '%rbx' clobbered in 'asm'
./src/cpuinfo/SDL_cpuinfo.c:236: error: PIC register '%rbx' clobbered in 'asm'
./src/cpuinfo/SDL_cpuinfo.c:236: error: PIC register '%rbx' clobbered in 'asm'
./src/cpuinfo/SDL_cpuinfo.c:167: error: PIC register '%rbx' clobbered in 'asm'
./src/cpuinfo/SDL_cpuinfo.c:167: error: PIC register '%rbx' clobbered in 'asm'
make: *** [build/SDL_cpuinfo.lo] Error 1
### execution of ./configure failed, exit code 2
Comment 1 Sam Lantinga 2009-10-20 21:45:08 UTC 
Interesting, it appears to work fine in GCC 4.2, perhaps it's a bug that's since been fixed?
Comment 2 Max Horn 2009-10-20 23:53:39 UTC 
Sam, I can confirm that it works with GCC 4.2. As such, I guess this can be considered "false alarm" resp. "bug in compiler".

Closing this, then :).
Comment 3 Sam Lantinga 2009-10-21 07:34:05 UTC 
Thanks!