http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49371
--- Comment #15 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-06-12 18:40:01 UTC --- I have bootstrapped gcc on x86_64-apple-darwin10.7.0 with the patch in comment #14 and the tests for gcc and tls.exp pass without unexpected failure. I just noticed the following oddity: [macbook] f90/bug% gfc -m64 -fpie -mdynamic-no-pic pr49331.f90 gfc: note: '-mdynamic-no-pic' overides '-pie', '-fpie' or '-fPIE' [macbook] f90/bug% gfc -m32 -fpie -mdynamic-no-pic pr49331.f90 f951: warning: '-mdynamic-no-pic' overrides '-fpic', '-fPIC', '-fpie', '-fPIE' or '-pie' [enabled by default] gfc: note: '-mdynamic-no-pic' overides '-pie', '-fpie' or '-fPIE' [macbook] f90/bug% gcc47 -m64 -fpie -mdynamic-no-pic backtrace.c gcc47: note: '-mdynamic-no-pic' overides '-pie', '-fpie' or '-fPIE' [macbook] f90/bug% gcc47 -m32 -fpie -mdynamic-no-pic backtrace.c cc1: warning: '-mdynamic-no-pic' overrides '-fpic', '-fPIC', '-fpie', '-fPIE' or '-pie' [enabled by default] gcc47: note: '-mdynamic-no-pic' overides '-pie', '-fpie' or '-fPIE' Is it expected that the warning appears with -m32, but not with -m64? I also got [macbook] f90/bug% gcc47 -m32 -fno-PIC -pie backtrace.c ld: cannot link -pie: -mdynamic-no-pic codegen found in _myfunc3 from /var/tmp//cccDWsse.o collect2: error: ld returned 1 exit status
