how long does it take to build gcc45?

[Gabriele Kahlout]

I'm not sure if I tripped on the same problem you are describing.
I've the following problem:
http://stackoverflow.com/questions/4391192/why-do-i-get-cc1plus-error-unrecognized-command-line-option-arch

Essentially -arch option is not accepted in gcc45.

On 8 December 2010 14:50, Ryan Schmidt <ryandesign at macports.org> wrote:

> On Dec 6, 2010, at 06:35, Gabriele Kahlout wrote:
>
> > On 6 December 2010 00:29, Ryan Schmidt wrote:
> >
> >> On Dec 5, 2010, at 22:00, Gabriele Kahlout wrote:
> >>
> >> > I.e. how do I make it such g++ -v returns 4.5 and not 4.2?
> >>
> >> Ah, I see:
> >>
> >> > Sounds simple but my removing of g++ alias in usr/bin and replacement
> with a g++ that links to g++-mp-4.5 tells me that g++ is not executable.
> What was I supposed to do?
> >>
> >> Install the gcc_select port, then run gcc_select. It will manage the
> symlinks for you (though in ${prefix}/bin, not in /usr/bin; you should undo
> any changes you made in /usr/bin).
> >
> > Horray! (thank you!):
> >
> > MacBook:bin simpatico$ sudo ./gcc_select -f mp-gcc45
> > Selecting version "mp-gcc45" for gcc
> > MacBook:bin simpatico$ g++ -v
> > Using built-in specs.
> > COLLECT_GCC=g++
> >
> COLLECT_LTO_WRAPPER=/opt/local/libexec/gcc/x86_64-apple-darwin10/4.5.1/lto-wrapper
> > Target: x86_64-apple-darwin10
> > Configured with: ../gcc-4.5.1/configure --prefix=/opt/local
> --build=x86_64-apple-darwin10
> --enable-languages=c,c++,objc,obj-c++,fortran,java
> --libdir=/opt/local/lib/gcc45 --includedir=/opt/local/include/gcc45
> --infodir=/opt/local/share/info --mandir=/opt/local/share/man
> --datarootdir=/opt/local/share/gcc-4.5 --with-local-prefix=/opt/local
> --with-system-zlib --disable-nls --program-suffix=-mp-4.5
> --with-gxx-include-dir=/opt/local/include/gcc45/c++/ --with-gmp=/opt/local
> --with-mpfr=/opt/local --with-mpc=/opt/local --enable-stage1-checking
> --disable-multilib --enable-fully-dynamic-string
> > Thread model: posix
> > gcc version 4.5.1 (GCC)
>
> Note that changing the default compiler (e.g. using gcc_select) could
> adversely affect a small number of ports.
>
> Ports in MacPorts are *supposed* to not care; they're supposed to compile
> using a certain specific compiler. Usually that matches the default compiler
> for the OS (as dictated from on high by Apple, not as selected by you using
> gcc_select) -- that is, Apple gcc 4.2 on Snow Leopard, Apple gcc 4.0 and
> Leopard and Tiger. Individual ports may override that compiler and choose a
> different one as needed, for example cairo which uses Apple gcc 4.2 even on
> Leopard, because it has special needs.
>
> The problem comes for the small number of ports that do not respect
> MacPorts' instructions to use a specific compiler. These ports will then
> build with whatever compiler you've gcc_selected, and this might cause them
> to fail to build properly or at all if you haven't selected the usual
> default compiler. If you find such a port, please file a ticket so we can
> fix that port to respect the MacPorts-dictated compiler.
>
>
> Further reading:
>
> http://trac.macports.org/wiki/UsingTheRightCompiler
>
>
>
>


-- 
Regards,
K. Gabriele

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