acinclude/ac_check_define.m4
author Sam Lantinga <slouken@libsdl.org>
Fri, 28 Sep 2012 03:18:18 -0700
changeset 6491 03b7e6b0a8bf
parent 3374 725b16784e96
permissions -rw-r--r--
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().

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])