Re: Make -Wc,foo behave like -Xcompiler foo in link mode.

[Peter O'Gorman]

On Sep 6, 2009, at 2:44 AM, Ralf Wildenhues wrote:
>    Add testsuite exposure for passing of compiler and linker flags.
>
>    * tests/flags.at (passing flags through libtool): New file, new
>    test, for bug fixed in previous commit.
>    * Makefile.am (TESTSUITE_AT): Add tests/flags.at.
>
> +
> +for tag in CC CXX F77 FC; do
> +  if $LIBTOOL --tag=$tag 2>&1 | grep 'unknown tag'; then
> +    continue
> +  fi

Hi Ralf,

I get test failures for this test on a darwin system with no fortran  
compiler installed. The available tags in the libtool script that gets  
built always contains all tags:
# The names of the tagged configurations supported by this script.
available_tags="CXX F77 FC GCJ RC "

So the test fails with:
./flags.at:63: $LIBTOOL --tag=$tag --mode=compile $compile -c $source
stderr:
i686-apple-darwin9-gcc-4.0.1: a.f: Fortran compiler not installed on  
this system
stdout:
libtool: compile:  gcc -g -O2 -c a.f  -o .libs/a.o
./flags.at:63: exit code was 1, expected 0
20. flags.at:24: 20. passing flags through libtool (flags.at:24):  
FAILED (flags.
at:63)


Why available_tags has tags for compilers that don't exist, I do not  
remember, but it looks like you need to check that the compiler exists  
(a.la LT_AT_TAG) in this test.

Thanks,
Peter
--
Peter O'Gorman
http://pogma.com