Root/toolchain/Makefile

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/prepare
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/prepare
17# build & install libc headers & support files, needed for step 5
18# 5) toolchain/gcc/compile
19# build & install an initial gcc, needed for step 6
20# 6) toolchain/libc/compile
21# build & install the final libc
22# 7) toolchain/gcc/install
23# build & install the final gcc
24# 8) toolchain/libc/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),,kernel-headers binutils gcc $(LIBC) $(if $(CONFIG_GLIBC_PORTS),glibc-ports))
32$(curdir)/builddirs-compile:=$($(curdir)/builddirs-prepare)
33$(curdir)/builddirs-install:=$($(curdir)/builddirs-compile)
34
35# builddir dependencies
36ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
37  $(curdir)/$(LIBC)/prepare:=$(curdir)/kernel-headers/install
38  $(curdir)/gcc/prepare:=$(curdir)/binutils/install
39  $(curdir)/kernel-headers/install:=$(curdir)/gcc/prepare
40  $(curdir)/gcc/compile:=$(curdir)/$(LIBC)/prepare
41  $(curdir)/$(LIBC)/compile:=$(curdir)/gcc/compile
42  $(curdir)/gcc/install:=$(curdir)/$(LIBC)/compile
43  $(curdir)/$(LIBC)/install:=$(curdir)/gcc/install
44  ifneq ($(CONFIG_GLIBC_PORTS),)
45    $(curdir)/glibc/prepare:=$(curdir)/glibc-ports/prepare
46  endif
47endif
48
49ifdef CONFIG_GCC_VERSION_LLVM
50  $(curdir)/builddirs += llvm
51  $(curdir)/gcc/prepare += $(curdir)/llvm/install
52endif
53
54ifneq ($(ARCH),)
55  $(TOOLCHAIN_DIR)/info.mk: .config
56    @for dir in $(TOOLCHAIN_DIR); do ( \
57        set -x; \
58        mkdir -p "$$dir"; \
59        cd "$$dir"; \
60        mkdir -p stamp lib usr/include usr/lib ; \
61    ); done
62    @grep GCC_VERSION $@ >/dev/null 2>&1 || $(INSTALL_DATA) $(TOPDIR)/toolchain/info.mk $@
63    @touch $@
64endif
65
66# prerequisites for the individual targets
67$(curdir)/ := .config prereq
68$(curdir)//prepare = $(STAGING_DIR)/.prepared $(TOOLCHAIN_DIR)/info.mk
69$(curdir)//compile = $(1)/prepare
70$(curdir)//install = $(1)/compile
71
72$(TOOLCHAIN_DIR)/stamp/.gcc-initial_installed:
73
74$(eval $(call stampfile,$(curdir),toolchain,install,$(TOOLCHAIN_DIR)/stamp/.gcc-initial_installed,,$(TOOLCHAIN_DIR)))
75$(eval $(call subdir,$(curdir)))
76
77

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