#
-# Copyright (C) 2006 OpenWrt.org
+# 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
#
-include $(TOPDIR)/rules.mk
-
-TARGETS-y:=kernel-headers
-TARGETS-$(CONFIG_GDB) += gdb
-ifeq ($(CONFIG_NATIVE_TOOLCHAIN),)
- TARGETS-y+=binutils gcc uClibc
-endif
-
-TARGETS_DOWNLOAD:=$(patsubst %,%-download,$(TARGETS-y))
-TARGETS_COMPILE:=$(patsubst %,%-compile,$(TARGETS-y))
-TARGETS_INSTALL:=$(patsubst %,%-install,$(TARGETS-y))
-TARGETS_CLEAN:=$(patsubst %,%-clean,$(TARGETS-y))
-STAMP:=$(STAGING_DIR)/stampfiles/.toolchain_installed
+# 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
+#
-all: install
-download: $(TARGETS_DOWNLOAD)
-compile: $(TARGETS_COMPILE)
-install: $(STAMP)
-clean: $(TARGETS_CLEAN)
+curdir:=toolchain
-ifneq ($(shell $(SCRIPT_DIR)/timestamp.pl -p . $(STAMP)),$(STAMP))
- $(STAMP): $(TARGETS_INSTALL)
-endif
+# subdirectories to descend into
+$(curdir)/builddirs := kernel-headers $(if $(CONFIG_GDB),gdb) $(if $(CONFIG_INSIGHT),insight) $(if $(CONFIG_NATIVE_TOOLCHAIN),,binutils gcc $(LIBC) $(if $(CONFIG_GLIBC_PORTS),glibc-ports))
+$(curdir)/builddirs-compile:=$($(curdir)/builddirs-prepare)
+$(curdir)/builddirs-install:=$($(curdir)/builddirs-compile)
-ifeq ($(CONFIG_CCACHE),y)
- uClibc-prepare: ccache-install
-endif
-uClibc-prepare: kernel-headers-prepare
+# builddir dependencies
+$(curdir)/$(LIBC)/prepare:=$(curdir)/kernel-headers/install
ifeq ($(CONFIG_NATIVE_TOOLCHAIN),)
- binutils-prepare: uClibc-prepare
- gcc-prepare: binutils-install
- uClibc-compile: gcc-compile
+ $(curdir)/gcc/prepare:=$(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
-gcc-install: uClibc-install
-$(STAMP):
- mkdir -p $(shell dirname $@)
- touch $@
+ifneq ($(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 $@
+endif
-$(STAGING_DIR)/$(REAL_GNU_TARGET_NAME):
- @mkdir -p $@
- @ln -sf ../lib $@/lib
+# prerequisites for the individual targets
+$(curdir)/ := .config prereq
+$(curdir)//prepare = $(STAGING_DIR)/.prepared $(TOOLCHAIN_DIR)/info.mk
+$(curdir)//compile = $(1)/prepare
+$(curdir)//install = $(1)/compile
-$(TOOLCHAIN_BUILD_DIR):
- @mkdir -p $@
+$(TOOLCHAIN_DIR)/stamp/.gcc-initial_installed:
-$(eval $(call default_subtargets,$(STAGING_DIR)/$(REAL_GNU_TARGET_NAME) $(TOOLCHAIN_BUILD_DIR)))
+$(eval $(call stampfile,$(curdir),toolchain,install,$(TOOLCHAIN_DIR)/stamp/.gcc-initial_installed,,$(TOOLCHAIN_DIR)))
+$(eval $(call subdir,$(curdir)))