Forcing compiler

[Ryan Schmidt]

On Apr 3, 2010, at 18:55, Jeremy Huddleston wrote:

> I need to force gcc-4.2 when building mesa on Leopard, but it doesn't seem to be working:
> 
> DEBUG: Assembled command: 'cd "/opt/local/var/macports/build/_Users_jeremy_src_macports-trunk_dports_x11_mesa/work/Mesa-7.8" && /usr/bin/make -j5 default INSTALL_DIR=/opt/local RC_CFLAGS="-arch ppc" CC="/usr/bin/gcc-4.0 -I/opt/local/include" CXX="/usr/bin/g++-4.0 -I/opt/local/include"'
> 
> 
> even though I have:
> 
> platform darwin 9 {
>    # http://trac.macports.org/ticket/24345
>    configure.compiler  apple-gcc-4.2
> }
> 
> build.args-append \
>    CC="${configure.cc} ${configure.cppflags}" \
>    CXX="${configure.cxx} ${configure.cppflags}"
> 
> I also tried
> configure.cc /usr/bin/gcc-4.2
> 
> but it's still using /usr/bin/gcc-4.0 when setting up build.args on Leopard...
> 
> What's wrong here? 

The variant gets evaluated after the build.args have already been appended.

To fix this:

pre-build {
build.args-append \
   CC="${configure.cc} ${configure.cppflags}" \
   CXX="${configure.cxx} ${configure.cppflags}"
}