#
-# 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 $(TOPDIR)/rules.mk
-TARGETS-y:=sed kernel-headers sstrip binutils gcc uClibc ipkg-utils libnotimpl squashfs jffs2 lzma
-TARGETS-$(CONFIG_GDB) += gdb
-
-TARGETS_DOWNLOAD:=$(patsubst %,%-source,$(TARGETS-y))
-TARGETS_INSTALL:=$(patsubst %,%-install,$(TARGETS-y))
-TARGETS_CLEAN:=$(patsubst %,%-clean,$(TARGETS-y))
-
-all: install
-download: $(TARGETS_DOWNLOAD)
-install: $(TARGETS_INSTALL)
-clean: $(TARGETS_CLEAN)
-
-kernel-headers-prepare: sed-install
-uClibc-prepare: kernel-headers-prepare sstrip-install
-binutils-prepare: uClibc-prepare
-gcc-prepare: binutils-install
-uClibc-compile: gcc-compile
-gcc-install: uClibc-install
-squashfs-compile: lzma-install
-
-TOOLCHAIN_STAMP_DIR:=$(STAGING_DIR)/stampfiles
-
-$(TOOLCHAIN_STAMP_DIR):
- mkdir -p $@
+# Steps:
+# 1) toolchain/binutils/install
+# build & install binutils
+# 2) toolchain/gcc/prepare
+# build & install a minimal gcc, needed for steps 3 & 4
+# 3) toolchain/kernel-headers/install
+# install kernel headers, needed for step 4
+# 4) toolchain/libc/prepare
+# build & install libc headers & support files, needed for step 5
+# 5) toolchain/gcc/compile
+# build & install an initial gcc, needed for step 6
+# 6) toolchain/libc/compile
+# build & install the final libc
+# 7) toolchain/gcc/install
+# build & install the final gcc
+# 8) toolchain/libc/install
+# build & install libc utilities
+#
-$(STAGING_DIR):
- @mkdir -p $@/lib
- @mkdir -p $@/include
- @mkdir -p $@/$(REAL_GNU_TARGET_NAME)
- @ln -sf ../lib $@/$(REAL_GNU_TARGET_NAME)/lib
+curdir:=toolchain
-$(TOOL_BUILD_DIR):
- @mkdir -p $@
+# subdirectories to descend into
+$(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)
-%-source: FORCE
- $(MAKE) -C $(patsubst %-source,%,$@) source
+# 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
-%-prepare: $(TOOLCHAIN_STAMP_DIR) $(STAGING_DIR) $(TOOL_BUILD_DIR) FORCE
- @[ -f $(TOOLCHAIN_STAMP_DIR)/.toolchain_$@ ] || { \
- $(MAKE) -C $(patsubst %-prepare,%,$@) prepare; \
- }
- @touch $(TOOLCHAIN_STAMP_DIR)/.toolchain_$@
+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
-%-compile: %-prepare
- @[ -f $(TOOLCHAIN_STAMP_DIR)/.toolchain_$@ ] || { \
- $(MAKE) -C $(patsubst %-compile,%,$@) compile; \
- }
- @touch $(TOOLCHAIN_STAMP_DIR)/.toolchain_$@
+# 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
-%-install: %-compile
- @[ -f $(TOOLCHAIN_STAMP_DIR)/.toolchain_$@ ] || { \
- $(MAKE) -C $(patsubst %-install,%,$@) install; \
- }
- @touch $(TOOLCHAIN_STAMP_DIR)/.toolchain_$@
+$(TOOLCHAIN_DIR)/stamp/.gcc-initial_installed:
-%-clean: FORCE
- @$(MAKE) -C $(patsubst %-clean,%,$@) clean
- @rm -f $(TOOLCHAIN_STAMP_DIR)/.toolchain_$(patsubst %-clean,%,$@)-*
+$(eval $(call stampfile,$(curdir),toolchain,install,$(TOOLCHAIN_DIR)/stamp/.gcc-initial_installed))
+$(eval $(call subdir,$(curdir)))