diff --git a/Makefile b/Makefile
index 53f7605..ef73816 100644
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,7 @@
-SYSROOT = /emsdk/upstream/emscripten/cache/sysroot
+SYSROOT := $(shell em-config CACHE)/sysroot
 
 # Add custom sysroot to library & macro search paths.
 export LDFLAGS += -L$(SYSROOT)/lib
-export ACLOCAL_PATH := $(SYSROOT)/share/aclocal:$(ACLOCAL_PATH)
 
 # Common linking flags for all targets.
 export LDFLAGS += -s DYNAMIC_EXECUTION=0 -s AUTO_JS_LIBRARIES=0 -s AUTO_NATIVE_LIBRARIES=0