https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61577
--- Comment #228 from John Buddery <jvb at cyberscience dot com> --- Sorry it took a while, I've been away for a bit and have lots to catch up on. These patches are for 11.1.0, but should work on earlier versions too. With this I have a working gcc which I've tested on several large projects. Most of the patch is a cumulation of the patches posted earlier in this thread - unsigned pointer extension, reverting @gprel changes etc. gcov-tool.c avoids build errors from ftwbuf differences on HP, apply if you hit errors but may need tidying up. ia64.md is the patch for long calls, to avoid the 25 bit limit which prevents linking gcc. It's still a work in progress as the instruction bundling is wrong, but it does work. Note that you must apply the binutils patch (or build the current binutils master, or a release after 2.36) to get an assembler that will work with brl and the HP linker. Do not apply the ia64.md patch without building a patched gnu assembler first! Also note that you need a working C++ compiler to bootstrap. That sounds obvious, but is harder than you think - as far as I know, none of the distributed g++ versions work sufficiently. One way to get a working 4.9.2 g++ is described in my post in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64919 but there may be other solutions as well. I've never tried to bootstrap with aCC. My configure command is: ../gcc-11.1.0/configure --enable-comdat --disable-libgomp --with -as=/usr/local/binutils/bin/as --enable-languages=c,c++ --prefix=/usr/local/gcc- 11.1.0 --with-gmp=/usr/local_32 --with-mpc=/usr/local_32 --with-mpfr=/usr/local_ 32 --with-dwarf2 The --enable-comdat I think is required. I think libgomp doesn't build, I've never investigated though and disable it. I use dwarf2 as recent gdb versions won't work. The assembler I use is a patched binutils 2.36. Good luck!
