Mercurial > hg > sv-dependency-builds
diff src/libsndfile-1.0.27/M4/really_gcc.m4 @ 125:cd6cdf86811e
Current libsndfile source
| author | Chris Cannam <cannam@all-day-breakfast.com> |
|---|---|
| date | Tue, 18 Oct 2016 13:22:47 +0100 |
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| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/libsndfile-1.0.27/M4/really_gcc.m4 Tue Oct 18 13:22:47 2016 +0100 @@ -0,0 +1,33 @@ +dnl @synopsis MN_GCC_REALLY_IS_GCC +dnl +dnl Find out if a compiler claiming to be gcc really is gcc (fuck you clang). +dnl @version 1.0 Oct 31 2013 +dnl @author Erik de Castro Lopo <erikd AT mega-nerd DOT com> +dnl +dnl Permission to use, copy, modify, distribute, and sell this file for any +dnl purpose is hereby granted without fee, provided that the above copyright +dnl and this permission notice appear in all copies. No representations are +dnl made about the suitability of this software for any purpose. It is +dnl provided "as is" without express or implied warranty. +dnl + +# If the configure script has already detected GNU GCC, then make sure it +# isn't CLANG masquerading as GCC. + +AC_DEFUN([MN_GCC_REALLY_IS_GCC], +[ AC_LANG_ASSERT(C) + if test "x$ac_cv_c_compiler_gnu" = "xyes" ; then + AC_TRY_LINK([ + #include <stdio.h> + ], + [ + #ifdef __clang__ + This is clang! + #endif + ], + ac_cv_c_compiler_gnu=yes, + ac_cv_c_compiler_gnu=no + ) + fi + +])