Mercurial > hg > octave-lojdl > gnulib-hg
diff m4/warnings.m4 @ 16723:376ee9a0ad8d
warnings.m4: check the compiler, not the preprocessor
* m4/warnings.m4 (gl_WARN_ADD): Use the compiler, not the
preprocessor.
Depend on the current AC_LANG for the cache variables.
| author | Akim Demaille <akim@lrde.epita.fr> |
|---|---|
| date | Thu, 29 Mar 2012 15:29:37 +0200 |
| parents | 8250f2777afc |
| children | b7fd03492209 |
line wrap: on
line diff
--- a/m4/warnings.m4 +++ b/m4/warnings.m4 @@ -1,4 +1,4 @@ -# warnings.m4 serial 5 +# warnings.m4 serial 6 dnl Copyright (C) 2008-2012 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -21,14 +21,14 @@ AC_DEFUN([gl_WARN_ADD], dnl FIXME: gl_Warn must be used unquoted until we can assume dnl autoconf 2.64 or newer. -[AS_VAR_PUSHDEF([gl_Warn], [gl_cv_warn_$1])dnl -AC_CACHE_CHECK([whether compiler handles $1], m4_defn([gl_Warn]), [ - gl_save_CPPFLAGS="$CPPFLAGS" +[AS_VAR_PUSHDEF([gl_Warn], [gl_cv_warn_[]_AC_LANG_ABBREV[]_$1])dnl +AC_CACHE_CHECK([whether _AC_LANG compiler handles $1], m4_defn([gl_Warn]), [ + gl_save_compiler_FLAGS="$_AC_LANG_PREFIX[]FLAGS" CPPFLAGS="${CPPFLAGS} $1" - AC_PREPROC_IFELSE([AC_LANG_PROGRAM([])], + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])], [AS_VAR_SET(gl_Warn, [yes])], [AS_VAR_SET(gl_Warn, [no])]) - CPPFLAGS="$gl_save_CPPFLAGS" + _AC_LANG_PREFIX[]FLAGS="$gl_save_compiler_FLAGS" ]) AS_VAR_IF(gl_Warn, [yes], [gl_AS_VAR_APPEND(m4_if([$2], [], [[WARN_CFLAGS]], [[$2]]), [" $1"])])