Hi, everyone. I've used a GCC 4.8 cross compiler on Ubuntu for AIX 5.3 with binutils 2.24. I feel it is time to update to the latest GCC and binutils, so I'm trying to build them. However, with pre-built binutils 2.24, GCC won't build with both gcc-5-branch and gcc-6-branch. By bisecting commits, I found compiling GCC fails after r227906 (git: 552a60d32) and r227937 (git: 67fd4fcc0) commits, which related to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54601 . Error log are follows: make[4]: Entering directory '/home/leebc/gcc_build/gcc-build/powerpc-ibm-aix5.3.0.0/pthread/libgcc' Makefile:959: warning: overriding recipe for target 'libunwind.a' Makefile:896: warning: ignoring old recipe for target 'libunwind.a' /tmp/cc1UPoiQ.o:/tmp/ccnlEgJu.c:(.pr+0x16): undefined reference to `__gcc_unwind_dbase' /tmp/cc1UPoiQ.o:/tmp/ccnlEgJu.c:(.tc+0x0): undefined reference to `__gcc_unwind_dbase' collect2: error: ld returned 1 exit status powerpc-ibm-aix5.3.0.0-ar: ./shr.o: No such file or directory Similarly, gcc-5-branch won't build after 2r29949 (git: 427ffb934) commit. Error log are follows: make[4]: Entering directory '/home/leebc/gcc_build/gcc-build/powerpc-ibm-aix5.3.0.0/pthread/libgcc' Makefile:961: warning: overriding recipe for target 'libunwind.a' Makefile:895: warning: ignoring old recipe for target 'libunwind.a' atexit_s.o:/home/leebc/gcc_build/gcc/../gcc/libgcc/config/rs6000/atexit.c:(.pr+0x6): undefined reference to `__dso_handle' atexit_s.o:/home/leebc/gcc_build/gcc/../gcc/libgcc/config/rs6000/atexit.c:(.tc+0x0): undefined reference to `__dso_handle' collect2: error: ld returned 1 exit status powerpc-ibm-aix5.3.0.0-ar: ./shr.o: No such file or directory mv: cannot stat './tmp-libgcc_s.a': No such file or directory There is another issue on the binutils 2.25, ( https://sourceware.org/bugzilla/show_bug.cgi?id=19153 and https://gcc.gnu.org/ml/gcc-help/2016-10/msg00106.html ) but my attempts are using binutils 2.24, so these are not related, I think. I have little knowledge on GCC internals, but seems like there are workaround for this issues. (I have a AIX 7.1 box, so I can test them immediately.) Any advice, insight, corrections, words of wisdom would be helpful.
