adding modula2 to supported languages of gcc

flameman · n00b Joined: 10 Apr 2011 Posts: 39

hi
is it possible to ask emerge to recompile gcc with languages=c,c++,gm2 ?
what have i to modify in order to ask emerge to to it ?

gm2 stands for gnu modula2, and it should be supported by the GNU gcc project

regards

NeddySeagoon · Posted: Mon Jun 25, 2012 5:59 pm Post subject:

flameman,

gm2 is supported but not yet integrated into gcc.
It needs gcc-4.1.2 to work with.

You need an ebuild (google can't find one) if you want portage to install it for you, or you can build it by hand outside of portage. The GNU site has the details.
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depontius · Advocate Joined: 05 May 2004 Posts: 3525

In general, what is the status of gm2? I had thought it long-dead, until seeing this thread. Once upon a time I had written a fair amount of code in Modula-2, including the types of stuff that people generally thing can only be done in C. (Reentrant iterrupt handlers (in DOS, no less) and routines for reading and writing legacy binary data formats, to name two.)
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NeddySeagoon · Posted: Mon Jun 25, 2012 7:32 pm Post subject:

depontius

Modula-2 seems to be alive ...
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NeddySeagoon

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depontius · Advocate Joined: 05 May 2004 Posts: 3525

Being attached to 4.1.2 when gcc stable is 4.5.3 doesn't leave me feeling as if it's very alive. Still it's worth looking at.
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flameman · n00b Joined: 10 Apr 2011 Posts: 39

I can clone the gnu pascal ebuild in order to do something similar
but imagine i want to add fortran (i suppose it is perfectly integrated in the gcc tree)
manually i can provide the configure statement languages=c,c++,fortran
exacly where emerge is telling the .configure to configure the build up in this way ?
if i open /usr/portage/dev-lang/gcc/* i can't fine nothing about it

any doc around ?

DirtyHairy · Posted: Thu Jun 28, 2012 7:41 am Post subject:

Uh-hum, trying not to sound condescending, but there's the "fortran" useflag

Will give you a nice, shiny gfortran.

flameman · n00b Joined: 10 Apr 2011 Posts: 39

It is not clear to me how gcc ebuild is working, i'd like to understand from where emerge finds what he puts into the configure about languages and other stuff.

depontius · Advocate Joined: 05 May 2004 Posts: 3525

In this particular case, GNU Pascal is not built with the gcc ebuild. It has its own ebuild, which works from an older (3.4.x) gcc release.
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flameman · n00b Joined: 10 Apr 2011 Posts: 39

I know, but i'd like to know how emerge can be able to configure gcc about the supported languages: where it find this information ? It is not written inside his ebuild

DirtyHairy · Posted: Fri Jun 29, 2012 10:01 am Post subject:

Yes, it is encoded in the ebuild, but the actual functonality is hidden in the toolchain eclass. Take a look at gcc-compiler-configure () in /usr/portage/eclass/toolchain.eclass , there you'll find what you are looking for.

flameman · n00b Joined: 10 Apr 2011 Posts: 39

thank you =)