Add king move gen and a test.c file for quick debug

makefile

@@ -17,7 +17,7 @@ TESTSRC := $(SRCDIR)/test.c
 TESTOBJ := $(BUILDDIR)/test.o
 TESTBIN := $(BUILDDIR)/print_board
 
-.PHONY: all clean test test-exe run
+.PHONY: all clean test test-exe run-c-test
 
 all: $(LIB)
 
@@ -27,18 +27,19 @@ $(BUILDDIR):
 $(BUILDDIR)/%.o: $(SRCDIR)/%.c | $(BUILDDIR)
 	$(CC) $(CFLAGS) -I$(INCDIR) -c $< -o $@
 
-$(LIB): $(OBJ)
+$(LIB): $(OBJ) | $(BUILDDIR)
 	$(CC) $(LDFLAGS) -o $@ $^
 
-c-test-exe: $(TESTBIN)
+# ---- test exe rules ----
+test-exe: $(TESTBIN)
 
 $(TESTOBJ): $(TESTSRC) | $(BUILDDIR)
-	$(CC) -std=c11 -Wall -Wextra -O2 -I$(INCDIR) -c $< -o $@
+	$(CC) $(CFLAGS) -I$(INCDIR) -c $< -o $@
 
-$(TESTBIN): $(TESTOBJ) $(LIB)
+$(TESTBIN): $(TESTOBJ) $(LIB) | $(BUILDDIR)
 	$(CC) -O2 -o $@ $(TESTOBJ) -L$(BUILDDIR) -lchess -Wl,-rpath,'$$ORIGIN'
 
-run-c-test: test-exe
+run-c-test: $(TESTBIN)
 	LD_LIBRARY_PATH=$(BUILDDIR) $(TESTBIN) $(FEN)
 
 clean: