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#
# Copyright (C) 2007-2008 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
# Main makefile for the toolchain
#
# Steps:
# 1) toolchain/binutils/install
# build & install binutils
# 2) toolchain/gcc/prepare
# build & install a minimal gcc, needed for steps 3 & 4
# 3) toolchain/kernel-headers/install
# install kernel headers, needed for step 4
# 4) toolchain/libc/prepare
# build & install libc headers & support files, needed for step 5
# 5) toolchain/gcc/compile
# build & install an initial gcc, needed for step 6
# 6) toolchain/libc/compile
# build & install the final libc
# 7) toolchain/gcc/install
# build & install the final gcc
# 8) toolchain/libc/install
# build & install libc utilities
#
curdir:=toolchain
# subdirectories to descend into
$(curdir)/builddirs := kernel-headers $(if $(CONFIG_GDB),gdb) $(if $(CONFIG_NATIVE_TOOLCHAIN),,binutils gcc $(LIBC) $(if $(CONFIG_GLIBC_PORTS),glibc-ports))
$(curdir)/builddirs-compile:=$($(curdir)/builddirs-prepare)
$(curdir)/builddirs-install:=$($(curdir)/builddirs-compile)
# builddir dependencies
$(curdir)/$(LIBC)/prepare:=$(curdir)/kernel-headers/install
ifeq ($(CONFIG_NATIVE_TOOLCHAIN),)
$(curdir)/gcc/prepare:=$(curdir)/binutils/install
$(curdir)/kernel-headers/install:=$(curdir)/gcc/prepare
$(curdir)/gcc/compile:=$(curdir)/$(LIBC)/prepare
$(curdir)/$(LIBC)/compile:=$(curdir)/gcc/compile
$(curdir)/gcc/install:=$(curdir)/$(LIBC)/compile
$(curdir)/$(LIBC)/install:=$(curdir)/gcc/install
ifneq ($(CONFIG_GLIBC_PORTS),)
$(curdir)/glibc/prepare:=$(curdir)/glibc-ports/prepare
endif
endif
ifneq ($(ARCH),)
$(TOOLCHAIN_DIR)/info.mk: .config
@for dir in $(TOOLCHAIN_DIR); do ( \
set -x; \
mkdir -p "$$dir"; \
cd "$$dir"; \
mkdir -p stamp lib usr/include usr/lib ; \
); done
@grep GCC_VERSION $@ >/dev/null 2>&1 || $(INSTALL_DATA) $(TOPDIR)/toolchain/info.mk $@
@touch $@
endif
# prerequisites for the individual targets
$(curdir)/ := .config prereq
$(curdir)//prepare = $(STAGING_DIR)/.prepared $(TOOLCHAIN_DIR)/info.mk
$(curdir)//compile = $(1)/prepare
$(curdir)//install = $(1)/compile
$(TOOLCHAIN_DIR)/stamp/.gcc-initial_installed:
$(eval $(call stampfile,$(curdir),toolchain,install,$(TOOLCHAIN_DIR)/stamp/.gcc-initial_installed,,$(TOOLCHAIN_DIR)))
$(eval $(call subdir,$(curdir)))
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