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view acinclude/ac_check_define.m4 @ 5274:11bd1585efb5

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The YV12 image isn't w*h*2, it's actually w*h + w*h/4 + w*h/4
author Sam Lantinga <slouken@libsdl.org>
date Sat, 12 Feb 2011 10:13:53 -0800
parents 725b16784e96
children
line wrap: on
line source

define(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])