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xyzz/gist:157b4dcca0ec792864e3 Secret

Created February 27, 2014 19:26
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gistfile1.txt
xyz@xyz-pc /tmp $ cat test.c
int main() {
#if defined(linux)
return 1;
#elif defined(__linux)
return 2;
#elif defined(__linux__)
return 3;
#endif
}
xyz@xyz-pc /tmp $ g++ test.c && ./a.out; echo $?
1
xyz@xyz-pc /tmp $ g++ -std=c++0x test.c && ./a.out; echo $?
2
xyz@xyz-pc /tmp $ g++ -std=c++11 test.c && ./a.out; echo $?
2
xyz@xyz-pc /tmp $
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