Compiling a 64 bits program using gcc


 
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# 1  
Old 06-01-2012
Compiling a 64 bits program using gcc

Hi Everyone,

I can ask what is the option to compile a 64 bits program using gcc. I have looked everywhere but can't find it. Before I used to use cc and the -q64 flag was the option to generate the 64 bits binary. Can anyone tell me what is the flags when using gcc. Thanks......
# 2  
Old 06-01-2012
-m64 is the usual way, although that depends on the CPU architecture.
# 3  
Old 06-01-2012
I did try that option before but didn't work. We are using PowerPC_POWER7 CPU's on aix platform.
# 4  
Old 06-01-2012
It should work, you might try -mpowerpc64.
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