diff options
Diffstat (limited to 'source/heimdal/cf')
| -rw-r--r-- | source/heimdal/cf/check-var.m4 | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/source/heimdal/cf/check-var.m4 b/source/heimdal/cf/check-var.m4 new file mode 100644 index 00000000000..41401f6dd93 --- /dev/null +++ b/source/heimdal/cf/check-var.m4 @@ -0,0 +1,25 @@ +dnl $Id: check-var.m4,v 1.12 2005/06/16 18:59:10 lha Exp $ +dnl +dnl rk_CHECK_VAR(variable, includes) +AC_DEFUN([rk_CHECK_VAR], [ +AC_MSG_CHECKING(for $1) +AC_CACHE_VAL(ac_cv_var_$1, [ +m4_ifval([$2],[ + AC_LINK_IFELSE([AC_LANG_PROGRAM([[$2 + void * foo(void) { return &$1; }]],[[foo()]])], + [ac_cv_var_$1=yes],[ac_cv_var_$1=no])]) +if test "$ac_cv_var_$1" != yes ; then +AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern int $1; +int foo(void) { return $1; }]],[[foo()]])], + [ac_cv_var_$1=yes],[ac_cv_var_$1=no]) +fi +]) +ac_foo=`eval echo \\$ac_cv_var_$1` +AC_MSG_RESULT($ac_foo) +if test "$ac_foo" = yes; then + AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_[]$1), 1, + [Define if you have the `]$1[' variable.]) + m4_ifval([$2], AC_CHECK_DECLS([$1],[],[],[$2])) +fi +]) + |