added m4 to prereq check, thanks to Gerph

[openwrt.git] / include / prereq-build.mk

diff --git a/include/prereq-build.mk b/include/prereq-build.mk
index 0b396c8..1cdcd0f 100644 (file)
--- a/include/prereq-build.mk
+++ b/include/prereq-build.mk
@@ -148,3 +148,7 @@ endef
 $(eval $(call Require,getopt-extended, \
        Please install an extended getopt version that supports --long \
 ))
+
+$(eval $(call RequireCommand,m4, \
+       Please install GNU m4 \
+))