diff --git a/Makefile b/Makefile
index a4501ef8..9d73264f 100644
--- a/Makefile
+++ b/Makefile
@@ -1114,6 +1114,10 @@ ifeq ($(PLATFORM),emscripten)
   OPTIMIZEVM = -O3
   OPTIMIZE = $(OPTIMIZEVM) -ffast-math
 
+  # These allow a warning-free build.
+  # Some of these warnings may actually be legit problems and should be fixed at some point.
+  BASE_CFLAGS+=-Wno-deprecated-non-prototype -Wno-dangling-else -Wno-implicit-const-int-float-conversion -Wno-misleading-indentation -Wno-format-overflow -Wno-logical-not-parentheses -Wno-absolute-value
+
   SHLIBEXT=wasm
   SHLIBCFLAGS=-fPIC
   SHLIBLDFLAGS=-s SIDE_MODULE