1 files changed, 6 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 3d3e60359..ec8b38c48 100644
--- a/Makefile
+++ b/Makefile
@@ -30,6 +30,7 @@ ENABLE_GCOV := 0
 ENABLE_GPROF := 0
 ENABLE_DEBUG := 0
 ENABLE_NDEBUG := 0
+ENABLE_CCACHE := 0
 LINK_CURSES := 0
 LINK_TERMCAP := 0
 LINK_ABC := 0
@@ -246,7 +247,7 @@ CXXFLAGS := -std=c++11 $(filter-out -fPIC -ggdb,$(CXXFLAGS))
 ABCMKARGS += ARCHFLAGS="-DABC_USE_STDINT_H -DABC_MEMALIGN=8"
 EMCCFLAGS := -Os -Wno-warn-absolute-paths
 EMCCFLAGS += --memory-init-file 0 --embed-file share -s NO_EXIT_RUNTIME=1
-EMCCFLAGS += -s EXPORTED_FUNCTIONS="['_main','_run','_prompt','_errmsg']"
+EMCCFLAGS += -s EXPORTED_FUNCTIONS="['_main','_run','_prompt','_errmsg','_memset']"
 EMCCFLAGS += -s TOTAL_MEMORY=134217728
 EMCCFLAGS += -s EXTRA_EXPORTED_RUNTIME_METHODS='["ccall", "cwrap"]'
 # https://github.com/kripken/emscripten/blob/master/src/settings.js
@@ -528,6 +529,10 @@ ifeq ($(ENABLE_COVER),1)
 CXXFLAGS += -DYOSYS_ENABLE_COVER
 endif
 
+ifeq ($(ENABLE_CCACHE),1)
+CXX := ccache $(CXX)
+endif
+
 define add_share_file
 EXTRA_TARGETS += $(subst //,/,$(1)/$(notdir $(2)))
 $(subst //,/,$(1)/$(notdir $(2))): $(2)