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Makefile
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Makefile
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###############################################################################
# Makefile
# by Alex Chadwick
#
# A makefile script for generation of a brainslug module
###############################################################################
# Hopefully you shouldn't need to change anything in this file.
# Alter makefile.mk to change common settings.
###############################################################################
# devkitpro settings
ifeq ($(strip $(DEVKITPRO)),)
$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>devkitPro")
endif
ifeq ($(strip $(DEVKITPPC)),)
$(error "Please set DEVKITPPC in your environment. export DEVKITPPC=<path to>devkitPPC")
endif
BSLUGDIR := $(DEVKITPRO)/bslug
GCC_VER := $(shell $(DEVKITPPC)/bin/powerpc-eabi-gcc -dumpversion)
PATH := $(DEVKITPPC)/bin:$(PATH)
LIB_INC_DIRS := $(DEVKITPPC)/lib/gcc/powerpc-eabi/$(GCC_VER)/include \
$(DEVKITPPC)/lib/gcc/powerpc-eabi/$(GCC_VER)/include-fixed \
$(BSLUGDIR)/include
include makefile.mk
###############################################################################
# Parameters
# A comma to make writing commands easier
C := ,
# Used to suppress command echo.
Q ?= @
LOG ?= @echo $@
# The intermediate directory for compiled object files.
BUILD ?= build
# The name of the assembler listing file to generate.
LIST ?= $(TARGET:.mod=.list)
# The name of the map file to generate.
MAP ?= $(TARGET:.mod=.map)
INC_DIRS += $(LIB_INC_DIRS) include
###############################################################################
# Compiler settings
# The toolchain to use.
PREFIX ?= powerpc-eabi-
# Tools to use
AS := $(PREFIX)as
LD := $(PREFIX)ld
CC := $(PREFIX)g++
OBJDUMP := $(PREFIX)objdump
# --relocatable: make sure ld doesn't remove relocations bslug will need
# -s: strip local symbols to speed linking
# --gc-sections: remove unneeded symbols
# -T: use the linker script specified (to force certain bslug sections together)
# -Map: generate a map file
LDFLAGS += --relocatable -s --gc-sections -u bslug_load -u bslug_meta \
-T $(BSLUGDIR)/bslug.ld \
$(patsubst %,-Map %,$(strip $(MAP)))
LD1FLAGS += --relocatable -s \
-T $(BSLUGDIR)/bslug_elf.ld
# -O2: optimise lots
# -Wall: generate lots of warnings
# -x c: compile as C code
# -std=gnu99: use the C99 standard with GNU extensions
# -nostdinc: don't include standard headers (we don't have all the symbols)
# -ffreestanding: we don't have libc; don't expect we do
# -DGEKKO: define the symbol GEKKO (used in some libogc headers)
# -DHW_RVL: define the symbol HW_RVL (used in some libogc headers)
# -D__wii__: define the symbol __wii__ (used in some libogc headers)
# -mrvl: enable wii/gamecube compilation
# -mcpu=750: enable processor specific compilation
# -meabi: enable eabi specific compilation
# -mhard-float: enable hardware floating point instructions
# -fshort-wchar: use 16 bit whcar_t type in keeping with Wii executables
# -fno-common: stop common variables which the loader can't understand
# -msdata-none: do not use r2 or r13 as small data areas
# -memb: enable embedded application specific compilation
# -ffunction-sections: split up functions so linker can garbage collect
# -fdata-sections: split up data so linker can garbage collect
CFLAGS += -O2 -Wall -x c -std=gnu99 \
-nostdinc -ffreestanding \
-DGEKKO -DHW_RVL -D__wii__ \
-mrvl -mcpu=750 -meabi -mhard-float -fshort-wchar -fno-common \
-msdata=none -memb -ffunction-sections -fdata-sections
ifdef DEBUG
else
CFLAGS += -DNDEBUG
endif
###############################################################################
# Variable init
# Phony targets
PHONY :=
###############################################################################
# Rule to make everything.
PHONY += all
all: $(TARGET)
###############################################################################
# Derived rules
LDFLAGS += $(patsubst %,-l %,$(LIBS)) $(patsubst %,-l %,$(LIBS)) \
$(patsubst %,-L %,$(LIB_DIRS)) $(patsubst %,-L %/lib,$(LIB_DIRS))
CFLAGS += $(patsubst %,-I %,$(INC_DIRS)) \
$(patsubst %,-I %/include,$(LIB_DIRS)) -iquote src
OBJECTS := $(patsubst %.c,$(BUILD)/%.c.o,$(filter %.c,$(SRC)))
###############################################################################
# Special build rules
# Rule to make the module file.
$(TARGET): $(BUILD)/output.elf | $(BIN)
$(LOG)
$Q$(LD) $(BUILD)/output.elf $(LDFLAGS) -o $@
# Rule to make the module file.
$(BUILD)/output.elf: $(OBJECTS) | $(BIN) $(BUILD)
$(LOG)
$Q$(LD) $(OBJECTS) $(LD1FLAGS) -o $@
# Rule to make intermediate directory
$(BUILD):
$Qmkdir $@
# Rule to make output directory
$(BIN):
$Qmkdir $@
###############################################################################
# Standard build rules
$(BUILD)/%.c.o: %.c | $(BUILD)
$(LOG)
-$Qmkdir -p $(dir $@)
$Q$(CC) -c $(CFLAGS) $< -o $@
###############################################################################
# Assembly listing rules
# Rule to make assembly listing.
PHONY += list
list : $(LIST)
# Rule to make the listing file.
%.list: $(TARGET)
$(LOG)
-$Qmkdir -p $(dir $@)
$Q$(OBJDUMP) -d $< > $@
###############################################################################
# Clean rule
# Rule to clean files.
PHONY += clean
clean:
$Qrm -rf $(wildcard $(BUILD) $(BIN))
###############################################################################
# Phony targets
.PHONY: $(PHONY)