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# Initialise variables that get added to throughout the various Makefiles
#
MAKEDEPS := Makefile .toolcheck
SRCDIRS :=
SRCS :=
NON_AUTO_SRCS :=
DRIVERS :=
ROMS :=
MEDIA :=
NON_AUTO_MEDIA :=
# Grab the central Config file.
#
MAKEDEPS += Config
include Config
# If no architecture is specified in Config or on the command-line,
# use that of the build machine.
#
ifndef ARCH
ARCH := $(shell uname -m | sed -e s,i[3456789]86,i386,)
endif
# Drag in architecture-specific Config
#
MAKEDEPS += arch/$(ARCH)/Config
include arch/$(ARCH)/Config
# If invoked with no build target, print out a helpfully suggestive
# message.
#
noargs : blib
@echo '===================================================='
@echo 'No target specified. To specify a target, do: '
@echo
@echo ' $(MAKE) bin/<rom-name>.<output-format> '
@echo
@echo 'where <output-format> is one of [z]{$(MEDIA) }'
@echo
@echo 'or: '
@echo
@echo ' $(MAKE) all<output-format>s'
@echo
@echo 'to generate all possible images of format <output-format>'
@echo
@echo 'For example, '
@echo
@echo ' make allzroms '
@echo
@echo 'will generate all possible .zrom (rom burnable) images, and'
@echo
@echo ' make allzdsks'
@echo
@echo 'will generate all possible .zdsk (bootable floppy) images, or'
@echo
@echo '===================================================='
@exit 1
# Locations of utilities
#
HOST_CC ?= gcc
CPP ?= gcc -E -Wp,-Wall
RM ?= rm -f
TOUCH ?= touch
MKDIR ?= mkdir
PERL ?= /usr/bin/perl
CC ?= $(CROSS_COMPILE)gcc
AS ?= $(CROSS_COMPILE)as
LD ?= $(CROSS_COMPILE)ld
SIZE ?= $(CROSS_COMPILE)size
AR ?= $(CROSS_COMPILE)ar
RANLIB ?= $(CROSS_COMPILE)ranlib
OBJCOPY ?= $(CROSS_COMPILE)objcopy
PARSEROM ?= $(PERL) ./util/parserom.pl
MAKEROM ?= $(PERL) ./util/makerom.pl
NRV2B ?= ./util/nrv2b
# Location to place generated files
#
BIN ?= bin
# Library containing all compiled objects
BLIB = $(BIN)/blib.a
# Common flags
#
CFLAGS += -I include -I arch/$(ARCH)/include -DARCH=$(ARCH)
CFLAGS += -Os -ffreestanding
CFLAGS += -Wall -W -Wno-format
CFLAGS += $(EXTRA_CFLAGS)
ASFLAGS += $(EXTRA_ASFLAGS)
LDFLAGS += $(EXTRA_LDFLAGS)
# CFLAGS for specific object types
#
CFLAGS_c +=
CFLAGS_S += -DASSEMBLY
# CFLAGS for specific object files. You can define
# e.g. CFLAGS_rtl8139, and have those flags automatically used when
# compiling bin/rtl8139.o.
#
OBJ_CFLAGS = $(CFLAGS_$(basename $(@F))) \
-DOBJECT=$(subst -,_,$(basename $(@F)))
$(BIN)/%.flags :
@echo $(OBJ_CFLAGS)
# Rules for specific object types.
#
COMPILE_c = $(CC) $(CFLAGS) $(CFLAGS_c) $(OBJ_CFLAGS)
RULE_c = $(COMPILE_c) -c $< -o $@
RULE_c_to_s = $(COMPILE_c) -S -c $< -o $@
RULE_c_to_c = $(COMPILE_c) -E -c $< > $@
PREPROCESS_S = $(CPP) $(CFLAGS) $(CFLAGS_S) $(OBJ_CFLAGS)
ASSEMBLE_S = $(AS) $(ASFLAGS)
RULE_S = $(PREPROCESS_S) $< | $(ASSEMBLE_S) -o $@
RULE_S_to_s = $(PREPROCESS_S) $< > $@
DEBUG_TARGETS += c s
# SRCDIRS lists all directories containing source files.
#
SRCDIRS += core drivers/net drivers/disk
# NON_AUTO_SRCS lists files that are excluded from the normal
# automatic build system.
#
NON_AUTO_SRCS += core/elf_loader.c
# Rules for finalising files. TGT_MAKEROM_FLAGS is defined as part of
# the automatic build system and varies by target; it includes the
# "-p 0x1234,0x5678" string to set the PCI IDs.
#
FINALISE_rom = $(MAKEROM) $(MAKEROM_FLAGS) $(TGT_MAKEROM_FLAGS) \
-i$(IDENT) $@
# Drag in architecture-specific Makefile
#
MAKEDEPS += arch/$(ARCH)/Makefile
include arch/$(ARCH)/Makefile
# Drag in the automatic build system and other housekeeping functions
MAKEDEPS += Makefile.housekeeping
include Makefile.housekeeping
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