diff --git a/source/Makefile b/source/Makefile
index 5afc49953..7a81cf2c1 100644
--- a/source/Makefile
+++ b/source/Makefile
@@ -185,9 +185,7 @@ else
 		CPPFLAGS += -Wno-unused-parameter
 		CPPFLAGS += -DUSE_WASM_SIMD -msimd128
 		CPPFLAGS += -DUSE_SSE42 -msse4.2
-		CPPFLAGS += -march=wasm32
-		# CPPFLAGS += -march=corei7
-		CPPFLAGS += -s USE_PTHREADS=1
+		CPPFLAGS += -pthread
 		CPPFLAGS += -s STRICT=1
 		LDFLAGS += --pre-js wasm_pre.js
 		# LDFLAGS += --preload-file eval/nn.bin
@@ -196,8 +194,7 @@ else
 		# -s PTHREAD_POOL_SIZE_STRICT=32
 		LDFLAGS += -s FILESYSTEM=1 -s EXIT_RUNTIME=0 -s "EXPORTED_RUNTIME_METHODS=['FS','ccall']"
 		LDFLAGS += -s ALLOW_MEMORY_GROWTH=1 -s INITIAL_MEMORY=$(EM_INITIAL_MEMORY_SIZE) -s MAXIMUM_MEMORY=4294967296
-		LDFLAGS += -s TOTAL_STACK=67108864
-		LDFLAGS += -s LLD_REPORT_UNDEFINED
+		LDFLAGS += -s STACK_SIZE=67108864
 		# LDFLAGS += -s PROXY_TO_PTHREAD
 		# LDFLAGS += -s ALLOW_UNIMPLEMENTED_SYSCALLS
 		# LDFLAGS += -s ASSERTIONS