Re: Getting a list of available C compilers

[Ralf Wildenhues]

* Harlan Stenn wrote on Sun, Nov 01, 2009 at 01:09:36AM CET:
> If I have a script that will generate the list of unique (more or less,
> I expect this will be a bit of a moving target) C compilers, I can:
> 
>  for i in `cc-list`
>  do
>      build CC=$i
>  done
> 
> and our "build" script will produce (for example):
> 
>  A.`config.guess`-$cc/
> 
> in which a build is done using that C compiler.

You will do a lot of duplicate work with something like the following,
as several of the names are bound to be alternates for the same
compiler, or only minimal variations of one compiler.  Untested.
The gcc[0-9-]* glob is merely to avoid hitting gccbug or gccmakedep,
and the list is certainly far from any completion, and subjective.

Since you're using config.guess already anyway, might as well check
for `config.guess`-gcc while you're at it (works only if $host and
$host_alias coincide though).

Cheers,
Ralf

names='gcc gcc[0-9_-]* cc c89 c99 cgcc clang llvm-gcc sdcc tcc
       xlc xlc_r bgxlc icc ecc pgcc pathcc ccc nvcc cl bcc bcc32'
cc_list=
save_IFS=$IFS
IFS=:
for dir in $PATH /usr/ucb; do
  IFS=$save_IFS
  for name in $names
    for ext in '' .exe; do
      cand=$dir/$name$ext
      if test -f "$cand"; then
        cc_list="$cc_list $cand"
        break
      fi
    done
  done
done
IFS=$save_IFS