Implement agbcc's libc and allow a custom cxx compiler to be passed t…

…o build_tools.sh

Makefile

@@ -31,6 +31,7 @@ LDFLAGS = -Map ../../$(MAP)
 OBJCOPY := $(DEVKITARM)/bin/arm-none-eabi-objcopy
 
 LIBGCC := tools/agbcc/lib/libgcc.a
+LIBC   := tools/agbcc/lib/libc.a
 
 SHA1 := sha1sum -c
 
@@ -154,7 +155,7 @@ $(OBJ_DIR)/ld_script.ld: ld_script.txt $(OBJ_DIR)/sym_bss.ld $(OBJ_DIR)/sym_comm
 	cd $(OBJ_DIR) && sed -f ../../ld_script.sed ../../$< | sed "s#tools/#../../tools/#g" > ld_script.ld
 
 $(ELF): $(OBJ_DIR)/ld_script.ld $(OBJS)
-	cd $(OBJ_DIR) && $(LD) $(LDFLAGS) -T ld_script.ld -o ../../$@ $(OBJS_REL) ../../$(LIBGCC)
+	cd $(OBJ_DIR) && $(LD) $(LDFLAGS) -T ld_script.ld -o ../../$@ $(OBJS_REL) ../../$(LIBGCC) ../../$(LIBC)
 
 $(ROM): $(ELF)
 	$(OBJCOPY) -O binary --gap-fill 0xFF --pad-to 0x9000000 $< $@

build_tools.sh

@@ -1,8 +1,8 @@
 #!/bin/sh
-make -C tools/gbagfx
-make -C tools/scaninc
-make -C tools/preproc
-make -C tools/bin2c
-make -C tools/rsfont
-make -C tools/aif2pcm
-make -C tools/ramscrgen
+make -C tools/gbagfx CXX=${1:=g++}
+make -C tools/scaninc CXX=${1:=g++}
+make -C tools/preproc CXX=${1:=g++}
+make -C tools/bin2c CXX=${1:=g++}
+make -C tools/rsfont CXX=${1:=g++}
+make -C tools/aif2pcm CXX=${1:=g++}
+make -C tools/ramscrgen CXX=${1:=g++}

ld_script.txt

@@ -325,7 +325,10 @@ SECTIONS {
         tools/agbcc/lib/libgcc.a:fp-bit.o(.text);
         tools/agbcc/lib/libgcc.a:_lshrdi3.o(.text);
         tools/agbcc/lib/libgcc.a:_negdi2.o(.text);
-        src/libc.o(.text);
+        tools/agbcc/lib/libc.a:memcpy.o(.text);
+        tools/agbcc/lib/libc.a:memset.o(.text);
+        tools/agbcc/lib/libc.a:strcmp.o(.text);
+        tools/agbcc/lib/libc.a:strcpy.o(.text);
     } =0
 
     .rodata :