summaryrefslogtreecommitdiffstats
path: root/third_party/heimdal/cf/check-var.m4
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--third_party/heimdal/cf/check-var.m428
1 files changed, 28 insertions, 0 deletions
diff --git a/third_party/heimdal/cf/check-var.m4 b/third_party/heimdal/cf/check-var.m4
new file mode 100644
index 0000000..71d6f70
--- /dev/null
+++ b/third_party/heimdal/cf/check-var.m4
@@ -0,0 +1,28 @@
+dnl $Id$
+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([[$2
+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
+])
+
+AC_WARNING_ENABLE([obsolete])
+AU_DEFUN([AC_CHECK_VAR], [rk_CHECK_VAR([$2], [$1])], [foo])