1# 
2# Copyright (C) 2007-2009 OpenWrt.org
3#
4# This is free software, licensed under the GNU General Public License v2.
5# See /LICENSE for more information.
6#
7# Main makefile for the toolchain
8#
9# Steps:
10# 1) toolchain/binutils/install
11#    build & install binutils
12# 2) toolchain/gcc/minimal/install
13#    build & install a minimal gcc, needed for steps 3 & 4
14# 3) toolchain/kernel-headers/install
15#    install kernel headers, needed for step 4
16# 4) toolchain/libc/headers/install
17#    build & install libc headers & support files, needed for step 5
18# 5) toolchain/gcc/initial/install
19#    build & install an initial gcc, needed for step 6
20# 6) toolchain/libc/install
21#    build & install the final libc
22# 7) toolchain/gcc/final/install
23#    build & install the final gcc
24# 8) toolchain/libc/utils/install
25#    build & install libc utilities
26#
27
28curdir:=toolchain
29
30# subdirectories to descend into
31$(curdir)/builddirs := $(if $(CONFIG_GDB),gdb) $(if $(CONFIG_INSIGHT),insight) $(if $(CONFIG_EXTERNAL_TOOLCHAIN),wrapper,kernel-headers binutils gcc/minimal gcc/initial gcc/final $(LIBC)/headers $(LIBC) fortify-headers)
32ifdef CONFIG_USE_UCLIBC
33  $(curdir)/builddirs += $(LIBC)/utils
34endif
35$(curdir)/builddirs-compile:=$($(curdir)/builddirs-prepare)
36$(curdir)/builddirs-install:=$($(curdir)/builddirs-compile)
37
38# builddir dependencies
39ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
40  $(curdir)/gcc/minimal/compile:=$(curdir)/binutils/install
41  $(curdir)/kernel-headers/install:=$(curdir)/gcc/minimal/install
42  $(curdir)/gcc/initial/prepare:=$(curdir)/gcc/minimal/prepare
43  $(curdir)/gcc/final/prepare:=$(curdir)/gcc/initial/prepare
44
45  $(curdir)/$(LIBC)/headers/compile:=$(curdir)/kernel-headers/install
46  $(curdir)/gcc/initial/compile:=$(curdir)/$(LIBC)/headers/install
47  $(curdir)/$(LIBC)/compile:=$(curdir)/gcc/initial/install
48  $(curdir)/gcc/final/compile:=$(curdir)/$(LIBC)/install
49  $(curdir)/$(LIBC)/utils/compile:=$(curdir)/gcc/final/install
50  $(curdir)/$(LIBC)/prepare:=$(curdir)/$(LIBC)/headers/prepare
51  $(curdir)/$(LIBC)/utils/prepare:=$(curdir)/$(LIBC)/headers/prepare
52endif
53
54ifndef DUMP_TARGET_DB
55ifneq ($(ARCH),)
56  $(TOOLCHAIN_DIR)/info.mk: .config
57	@for dir in $(TOOLCHAIN_DIR); do ( \
58		$(if $(QUIET),,set -x;) \
59		mkdir -p "$$dir"; \
60		cd "$$dir"; \
61		ln -nsf lib lib64; \
62		ln -nsf lib lib32; \
63		mkdir -p stamp lib usr/include usr/lib ; \
64	); done
65	@grep GCC_VERSION $@ >/dev/null 2>&1 || $(INSTALL_DATA) $(TOPDIR)/toolchain/info.mk $@
66	@touch $@
67endif
68endif
69
70# prerequisites for the individual targets
71$(curdir)/ := .config prereq
72$(curdir)//prepare = $(STAGING_DIR)/.prepared $(TOOLCHAIN_DIR)/info.mk $(tools/stamp-install)
73$(curdir)//compile = $(1)/prepare
74$(curdir)//install = $(1)/compile
75
76ifndef DUMP_TARGET_DB
77$(TOOLCHAIN_DIR)/stamp/.gcc-initial_installed:
78endif
79
80$(eval $(call stampfile,$(curdir),toolchain,install,$(TOOLCHAIN_DIR)/stamp/.gcc-initial_installed,,$(TOOLCHAIN_DIR)))
81$(eval $(call subdir,$(curdir)))
82
83