Make engine dep-free/standalone and add Wasm target

Makefile

@@ -2,13 +2,17 @@
 BUILD ?= debug
 CC := clang
 
-CFLAGS.gcc.release := -O3
-CFLAGS.gcc.debug := -ggdb -O0 -fsanitize=address
 CFLAGS.gcc := -std=c23 -Wall -Wextra -Wconversion -Wno-unused-function
+CFLAGS.gcc.release := -Ofast
+CFLAGS.gcc.debug := -ggdb -O0 -fsanitize=address
 
-CFLAGS.clang.release := -O3
-CFLAGS.clang.debug := -ggdb -O0 -fsanitize=address
 CFLAGS.clang := -std=c23 -Wall -Wextra -Wconversion -Wno-unused-function -Wimplicit-int-conversion
+CFLAGS.clang.release := -Ofast
+CFLAGS.clang.debug := -ggdb -O0 -fsanitize=address
+CFLAGS.clang.wasm := \
+	--target=wasm32-unknown-unknown -O3 -nostdlib \
+	-Wl,--export-all \
+	-Wl,--no-entry
 
 CFLAGS :=  $(CFLAGS.$(CC)) $(CFLAGS.$(CC).$(BUILD))
 
@@ -17,6 +21,9 @@ all: tests
 codegen: codegen.c
 	$(CC) -o $@ $(CFLAGS) $^
 
+wasm: wasm-compat.c
+	$(CC) -DWASM -o chess.wasm wasm-compat.c $(CFLAGS.$(CC)) $(CFLAGS.$(CC).wasm) 
+
 mbb_rook.h: codegen
 	./codegen