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deltheil/gist:1601327

Created January 12, 2012 16:05
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GCC - list all the macros defined during the execution of the preprocessor
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gistfile1.sh
# -E is for preprocessor only
# -dM tells GCC to generate a list of #define directives
# e.g.
# #define __APPLE__ 1
# #define __SSE2__ 1
# #define __GNUC__ 4
# ...
gcc -E -dM - < /dev/null
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