[petsc-dev] Need a CFLAGS that does is *not* included in the link

[Matthew Knepley]

On Thu, May 24, 2012 at 10:09 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> Building PETSc with clang++ produces a warning about compiling *.c as C++
> being deprecated. To silence the warning, we would need to pass "-x c++" to
> the compiler, but NOT to the linker. CFLAGS is currently also passed to the
> linker. Is this something we want to fix?


According to autoconf, CFLAGS goes with both. CPPFLAGS is only for the
compiler.

   Matt


> Clang used to SEGV when "-x c++" is passed to the linker. Now (latest SVN)
> it just interprets the object file as C++ source (which obviously produces
> a ton of garbage).
>
> http://llvm.org/bugs/show_bug.cgi?id=12924
>



-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
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