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-rw-r--r--source/heimdal/cf/check-var.m425
-rw-r--r--source/heimdal_build/config.m49
2 files changed, 30 insertions, 4 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
+])
+
diff --git a/source/heimdal_build/config.m4 b/source/heimdal_build/config.m4
index 5eb443cd82f..27cc0a3c9a2 100644
--- a/source/heimdal_build/config.m4
+++ b/source/heimdal_build/config.m4
@@ -1,4 +1,3 @@
-
m4_define([upcase],`echo $1 | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`)dnl
dnl love_FIND_FUNC(func, includes, arguments)
@@ -165,9 +164,11 @@ if test "$ac_cv_type_signal" = "void" ; then
fi
AC_SUBST(VOID_RETSIGTYPE)
-AC_CHECK_DECL(h_errno,
- [AC_DEFINE(HAVE_DECL_H_ERRNO,1,whether h_errno is declared)], [], [
-#ifdef HAVE_SYS_TYPES_H
+
+sinclude(heimdal/cf/check-var.m4)
+
+rk_CHECK_VAR(h_errno,
+[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_NETDB_H