The command shown below does not return the correct Thumb libgcc library for gcc v4.0.0:
$ /3rd/arm-elf-gcc/bin/arm-thumb-elf-gcc -mthumb -print-libgcc-file-name /Volumes/Misc/3rd/arm-elf-gcc/bin/../lib/gcc/arm-thumb-elf/4.0.0/libgcc.a The same command used with gcc v3.4.3 does return the correct library name: $ /3rd/arm-elf-gcc.old/bin/arm-thumb-elf-gcc -mthumb -print-libgcc-file-name /Volumes/Misc/3rd/arm-elf-gcc.old/bin/../lib/gcc/arm-thumb-elf/3.4.3/thumb/libgcc.a -- Summary: Libgcc file name not returned correctly Product: gcc Version: 4.0.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: epoitier at velvetfr dot ath dot cx CC: gcc-bugs at gcc dot gnu dot org GCC build triplet: powerpc-apple-darwin7.9.0 GCC host triplet: powerpc-apple-darwin7.9.0 GCC target triplet: arm-thumb-elf http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21344