add a new helper macro to deal with conditional ./configure flags

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@20570 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/include/autotools.mk b/include/autotools.mk
index e1535d0..c941a49 100644 (file)
--- a/include/autotools.mk
+++ b/include/autotools.mk
@@ -32,6 +32,7 @@ update_libtool_ucxx = \
        ) \
        $(call update_libtool_common)
 
+autoconf_bool = $(patsubst %,$(if $($(1)),--enable,--disable)-%,$(2))
 
 # prevent libtool from linking against host development libraries
 define libtool_fixup_libdir