SDL2/acinclude/ac_check_define.m4
Sam Lantinga 584f8bb2ce Fixed bug 1587 - "aclocal" fails to generate a sufficient "aclocal.m4"
Cecil Curry 2012-08-27 16:55:12 PDT

Allow "aclocal" to find the "AC_CHECK_DEFINE" macro.

On running:

   rm aclocal.m4
   libtoolize --install --copy --force
   aclocal -I acinclude
   autoconf -I acinclude

The former three commands succeed, but "autoconf" fails with:

   configure.in:198: error: possibly undefined macro: AC_CHECK_DEFINE
         If this token and others are legitimate, please use m4_pattern_allow.
         See the Autoconf documentation.

"aclocal" fails to find AC_CHECK_DEFINE and hence add such macro to
"aclocal.m4". Here is why:

* "acinclude/ac_check_define.m4" defines AC_CHECK_DEFINE via define() rather
than AC_DEFUN().
* "aclocal" fails to find macros defined via define().
2012-09-28 03:18:18 -07:00

15 lines
376 B
Plaintext

AC_DEFUN([AC_CHECK_DEFINE],[dnl
AC_CACHE_CHECK(for $1 in $2, ac_cv_define_$1,
AC_EGREP_CPP([YES_IS_DEFINED], [
#include <$2>
#ifdef $1
YES_IS_DEFINED
#endif
], ac_cv_define_$1=yes, ac_cv_define_$1=no)
)
if test "$ac_cv_define_$1" = "yes" ; then
AC_DEFINE([HAVE_$1],[],[Added by AC_CHECK_DEFINE])
fi
])dnl
AC_DEFINE([HAVE_$1],[],[Added by AC_CHECK_DEFINE])