http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49178
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-05-31 15:34:00 UTC --- But the spaces in between -l and library name are solely on the Driving: line, which autoconf omits: # gfortran 4.3 outputs lines setting COLLECT_GCC_OPTIONS, COMPILER_PATH, # LIBRARY_PATH; skip all such settings. ac_[]_AC_LANG_ABBREV[]_v_output=`eval $ac_link AS_MESSAGE_LOG_FD>&1 2>&1 | sed '/^Driving:/d; /^Configured with:/d; '"/^[[_$as_cr_Letters]][[_$as_cr_alnum]]*=/d"` AS_ECHO(["$ac_[]_AC_LANG_ABBREV[]_v_output"]) >&AS_MESSAGE_LOG_FD _AC_LANG_PREFIX[]FLAGS=$ac_save_[]_AC_LANG_PREFIX[]FLAGS so I don't see why it should make any difference. Even autoconf 2.59 did have something similar.