Re: How can I check if C++ and Fortran compiler works ?

Ralf Wildenhues <Ralf.Wildenhues@xxxxxx> · Mon, 22 Feb 2010 07:43:52 +0100

* Dr. David Kirkby wrote on Sun, Feb 21, 2010 at 11:53:05PM CET:
> There is no actual test that the C++ compiler works. How can I add
> one?

You could simply test whether it can link a trivial program.  Call
the macro below after AC_PROG_CXX.

I intend to submit this macro, suitably rewritten and factored, as
Autoconf addition, since it's come up twice within two days now.

Cheers,
Ralf

# rw_PROG_CXX_WORKS
# Check whether the C++ compiler works.
AC_DEFUN([rw_PROG_CXX_WORKS],
[AC_REQUIRE([AC_PROG_CXX])dnl
AC_CACHE_CHECK([whether the C++ compiler works],
               [rw_cv_prog_cxx_works],
               [AC_LANG_PUSH([C++])
                AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
                               [rw_cv_prog_cxx_works=yes],
                               [rw_cv_prog_cxx_works=no])
                AC_LANG_POP([C++])])
])

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