Add flag to link musl instead of glibc

Makefile

@@ -1,6 +1,10 @@
 default: lib
 
-CC      := cc
+ifdef LIBSM64_MUSL
+  CC    := musl-gcc
+else
+  CC    := cc
+endif
 CFLAGS  := -g -Wall -fPIC -DSM64_LIB_EXPORT
 LDFLAGS := -lm -shared
 
@@ -28,7 +32,7 @@ ifeq ($(OS),Windows_NT)
   LIB_FILE := $(DIST_DIR)/sm64.dll
 endif
 
-DUMMY != mkdir -p $(ALL_DIRS) build/test src/decomp/mario $(DIST_DIR)/include 
+DUMMY != mkdir -p $(ALL_DIRS) build/test src/decomp/mario $(DIST_DIR)/include
 
 
 $(filter-out src/decomp/mario/geo.inc.c,$(IMPORTED)): src/decomp/mario/geo.inc.c
@@ -69,4 +73,4 @@ run: test
 clean:
 	rm -rf $(BUILD_DIR) $(DIST_DIR) src/decomp/mario test/level.? $(TEST_FILE)
 
--include $(DEP_FILES)
+-include $(DEP_FILES)

README.md

@@ -17,7 +17,7 @@ which makes use of this library must ask the user to provide a ROM for asset ext
 
 - Ensure python3 is installed.
 - Ensure the SDL2 and GLEW libraries are installed if you're building the test program (on Ubuntu: libsdl2-dev, libglew-dev)
-- Run `make` to build
+- Run `make` to build. If you want to link musl libc instead of glibc run `LIBSM64_MUSL=1 make` instead.
 - To run the test program you'll need a SM64 US ROM in the root of the repository with the name `baserom.us.z64`.
 
 ## Building on Windows (test program not supported)