Add some configuration parameters for compilation

2 files changed, 15 insertions, 2 deletions

diff --git a/Makefile b/Makefile
index 9d830b8..427861c 100644
--- a/Makefile
+++ b/Makefile
@@ -34,10 +34,12 @@ CC             := $(DEVKITBIN)/arm-none-eabi-gcc
 OBJCOPY        := $(DEVKITBIN)/arm-none-eabi-objcopy
 ARCH           := -mthumb -mthumb-interwork
 SPECS          := -specs=gba.specs
+CONFIG         :=
 CFLAGS         := -Wall -Wextra -pedantic -Wno-incompatible-pointer-types
 CFLAGS         += -fno-strict-aliasing
 CFLAGS         += -mcpu=arm7tdmi -mtune=arm7tdmi $(ARCH)
 CFLAGS         += $(INC_FLAGS)
+CFLAGS         += $(CONFIG)
 LDFLAGS        := $(ARCH) $(SPECS)
 LDLIBS         := $(LIBGBA)
 RELEASE_CFLAGS := -DNDEBUG -O2
diff --git a/src/main.c b/src/main.c
index f612ef7..dd4145a 100644
--- a/src/main.c
+++ b/src/main.c
@@ -23,12 +23,23 @@ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 WITH REGARD TO THIS SOFTWARE.
 */
 
+//
+// Config parameters.
+//
+#ifndef TEXT_LAYER
+#define TEXT_LAYER ppu.fg
+#endif
+
+#ifndef DEFAULT_CONTROL
+#define DEFAULT_CONTROL CONTROL_CONTROLLER
+#endif
+
 typedef enum {
     CONTROL_CONTROLLER,
     CONTROL_MOUSE,
 } ControlMethod;
 
-static ControlMethod control_method = CONTROL_CONTROLLER;
+static ControlMethod control_method = DEFAULT_CONTROL;
 
 #define MOUSE_DELTA 1
 typedef struct Mouse {
@@ -280,7 +291,7 @@ int main(void) {
     init_uxn(&u);
 
     // Initialize text engine.
-    txt_init(1, ppu.fg);
+    txt_init(1, TEXT_LAYER);
     txt_position(0,0);
 
     // Main loop.