negotiate_wrapper: vfork is not portable

Windows does not provide vfork(), so we must test for it before building
the helper.

diff --git a/helpers/negotiate_auth/wrapper/required.m4 b/helpers/negotiate_auth/wrapper/required.m4
index a8c7aa1652eccb81592ebbbaf985b0fe97674205..64d6ca723df7fcba1344d4ad224399a2556f2db0 100755 (executable)
--- a/helpers/negotiate_auth/wrapper/required.m4
+++ b/helpers/negotiate_auth/wrapper/required.m4
@@ -1 +1 @@
-BUILD_HELPER="wrapper"
+AC_CHECK_FUNCS(vfork,[BUILD_HELPER="wrapper"])