4.5: COLLECT_GCC_OPTIONS='-v' '-U_FORTIFY_SOURCE' '-O2' '-o' 'test' '-mtune=generic' '-march=x86-64' vs 4.6: COLLECT_GCC_OPTIONS='-v' '-U' '_FORTIFY_SOURCE' '-O2' '-o' 'test' '-mtune=generic' '-march=x86-64'
4.5: COLLECT_ GCC_OPTIONS= '-v' '-U_FORTIFY_SOURCE' '-O2' '-o' 'test' '-mtune=generic' '-march=x86-64' GCC_OPTIONS= '-v' '-U' '_FORTIFY_SOURCE' '-O2' '-o' 'test' '-mtune=generic' '-march=x86-64'
vs
4.6: COLLECT_