Oh, wait -- I must correct myself. As part of the LibcxxOnOlderSystems instructions, you can (must) build cctools against newer llvm headers, but forcing the build with clang-3.4:
cctools @895_7+llvm39+universal-llvm34 (active) platform='darwin 10' archs='i386 x86_64' date='2018-08-19T19:49:33-0700' Best, Ken On 2018-09-02, at 7:55 AM, Ken Cunningham wrote: > > usr/bin/gcc-4.2 -Os -std=gnu99 -Os -DLTO_SUPPORT -g -I../../include -Wall > > -D_MACH_I386_THREAD_STATUS_FPSTATE_LEGACY_FIELD_NAMES_ > > -D_ARCHITECTURE_I386_FPU_FPSTATE_LEGACY_FIELD_NAMES_ -I/opt/local/include > > -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_cctools/cctools/work/cctools-895/../ld64-274.1/src/abstraction > > > > -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_cctools/cctools/work/cctools-895/../ld64-274.1/src/other > > > > -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_cctools/cctools/work/cctools-895/include > > -arch x86_64 -arch i386 -I/opt/local/libexec/llvm-3.9/include -pipe -Os > > -fPIC -Wall -W -Wno-unused-parameter -Wwrite-strings > > -Wmissing-field-initializers -pedantic -Wno-long-long > > -Wcovered-switch-default -Wdelete-non-virtual-dtor -Werror=date-time > > -DNDEBUG -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS > > -D__STDC_LIMIT_MACROS -c -o ./allocate.o ../allocate.c > > > I just rebuilt cctools on a vanilla 10.6.8 VM, and it built fine. > > Your build error occurred because you're trying to force a build against the > llvm-3.9 headers with the ancient gcc-4.2, and it just can't. > > gcc-4.2 can build against the llvm-3.4 headers (as it is set up to do by > default), but I don't know if it can build against any other headers. My > guess is no, but only Jeremy might have tried others. > > If you really want to build cctools against the llvm-3.9 headers on 10.6.8 > (not sure why, but just sayin'), you can do that if you force a newer > compiler like clang-3.9. > > You would type something like this: > > sudo port -v install cctools +llvm39 configure.compiler=macports-clang-3.9 > > Note - you would probably then be the only person on Earth with this > configuration of cctools on 10.6.8. Who knows what kind of problems you might > run into that nobody could figure out? > > Best, > > Ken
