try other way

diff --git a/include/prereq-build.mk b/include/prereq-build.mk
index bd8d7fa1d0675d2e7352952d7d662d38ffeec8e3..de7455cfbea379d89b7723992756c568d097dad0 100644 (file)
--- a/include/prereq-build.mk
+++ b/include/prereq-build.mk
@@ -190,8 +190,8 @@ $(eval $(call SetupHostCommand,which,Please install 'which', \
        /bin/which which, \
        which which))
 
-$(eval $(call SetupHostCommand,swig,Please install 'swig', \
-       swig -python -help |grep "Python"))
+$(eval $(call $(if $(CONFIG_PACKAGE_uboot-envtools),SetupHostCommand,Ignore),swig,Please install 'swig', \
+       swig -python -help 2>&1 |grep 'Python'))
 
 $(STAGING_DIR_HOST)/bin/mkhash: $(SCRIPT_DIR)/mkhash.c
        mkdir -p $(dir $@)