cctools fails to build on Snow Leopard

[Riccardo Mottola]

Hi Ken,


On 09/02/18 16:55, 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?

I did not "force" this configuration at all - I am just upgrading, so
port selected this heade/compiler combination by itself!

Riccardo
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