https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77529
--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to Matthias Klose from comment #0) > seen with a GCC 6 configured with --enable-default-pie: > > $ gcc -E -dM - < /dev/null 2>&1|grep -i 'pi[ce]' > #define __pie__ 2 > #define __PIE__ 2 > #define __pic__ 2 > #define __PIC__ 2 > > $ gcc -E -dM -fPIC - < /dev/null 2>&1|grep -i 'pi[ce]' > #define __pic__ 2 > #define __PIC__ 2 > > $ gcc -E -dM -fPIC -fno-pie - < /dev/null 2>&1|grep -i 'pi[ce]' > $ gcc -E -dM -fno-pie -fPIC - < /dev/null 2>&1|grep -i 'pi[ce]' > #define __pic__ 2 > #define __PIC__ 2 > > I would expect the last behavior to be the default one. --enable-default-pie should only change the default. When -fno-pie -fPIC are used, the driver behavior should be independent of --enable-default-pie. GCC 6 without --enable-default-pie, I got [hjl@gnu-6 gas]$ gcc -E -dM - < /dev/null 2>&1|grep -i 'pi[ce]' [hjl@gnu-6 gas]$ gcc -E -dM -fPIC - < /dev/null 2>&1|grep -i 'pi[ce]' #define __pic__ 2 #define __PIC__ 2 [hjl@gnu-6 gas]$ gcc -E -dM -fPIC -fno-pie - < /dev/null 2>&1|grep -i 'pi[ce]' [hjl@gnu-6 gas]$ gcc -E -dM -fno-pie -fPIC - < /dev/null 2>&1|grep -i 'pi[ce]' #define __pic__ 2 #define __PIC__ 2 [hjl@gnu-6 gas]$ They match what you got with --enable-default-pie when -fPIC or -fno-pie are used.
