#
-# Copyright (C) 2007 OpenWrt.org
+# Copyright (C) 2007-2009 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/compile
+# build & install binutils
+# 2) toolchain/gcc/minimal/compile
+# build & install a minimal gcc, needed for steps 3 & 4
+# 3) toolchain/kernel-headers/compile
+# install kernel headers, needed for step 4
+# 4) toolchain/libc/headers/compile
+# build & install libc headers & support files, needed for step 5
+# 5) toolchain/gcc/initial/compile
+# build & install an initial gcc, needed for step 6
+# 6) toolchain/libc/compile
+# build & install the final libc
+# 7) toolchain/gcc/final/compile
+# build & install the final gcc
+# 8) toolchain/libc/utils/compile
+# build & install libc utilities
+#
+# For musl, steps 2 and 4 are skipped, and step 3 is done after 5
+
curdir:=toolchain
# subdirectories to descend into
-$(curdir)/builddirs := kernel-headers $(if $(CONFIG_GDB),gdb) $(if $(CONFIG_NATIVE_TOOLCHAIN),,binutils gcc uClibc)
+$(curdir)/builddirs := $(if $(CONFIG_GDB),gdb) $(if $(CONFIG_EXTERNAL_TOOLCHAIN),wrapper,kernel-headers binutils gcc/initial gcc/final $(LIBC) fortify-headers) $(if $(CONFIG_NASM),nasm)
# builddir dependencies
-$(curdir)/uClibc/prepare:=$(curdir)/kernel-headers/prepare
-ifeq ($(CONFIG_NATIVE_TOOLCHAIN),)
- $(curdir)/binutils/prepare:=$(curdir)/uClibc/prepare
- $(curdir)/gcc/prepare:=$(curdir)/binutils/install
- $(curdir)/uClibc/compile:=$(curdir)/gcc/compile
+ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
+ ifdef CONFIG_USE_MUSL
+ $(curdir)/kernel-headers/compile:=$(curdir)/gcc/initial/compile
+ $(curdir)/$(LIBC)/compile:=$(curdir)/kernel-headers/compile
+ else
+ $(curdir)/builddirs += $(LIBC)/headers gcc/minimal
+ $(curdir)/gcc/minimal/compile:=$(curdir)/binutils/compile
+ $(curdir)/kernel-headers/compile:=$(curdir)/gcc/minimal/compile
+ $(curdir)/$(LIBC)/headers/compile:=$(curdir)/kernel-headers/compile
+ $(curdir)/gcc/initial/compile:=$(curdir)/$(LIBC)/headers/compile
+ endif
+
+ $(curdir)/gcc/initial/compile+=$(curdir)/binutils/compile
+ $(curdir)/$(LIBC)/compile:=$(curdir)/gcc/initial/compile
+ $(curdir)/gcc/final/compile:=$(curdir)/$(LIBC)/compile $(curdir)/kernel-headers/compile
+ $(curdir)/$(LIBC)/utils/compile:=$(curdir)/gcc/final/compile
+endif
+
+ifndef DUMP_TARGET_DB
+ifneq ($(ARCH),)
+ $(TOOLCHAIN_DIR)/info.mk: .config
+ @for dir in $(TOOLCHAIN_DIR); do ( \
+ $(if $(QUIET),,set -x;) \
+ mkdir -p "$$dir"; \
+ cd "$$dir"; \
+ ln -nsf lib lib64; \
+ ln -nsf lib lib32; \
+ mkdir -p stamp lib usr/include usr/lib ; \
+ ); done
+ @grep GCC_VERSION $@ >/dev/null 2>&1 || $(INSTALL_DATA) $(TOPDIR)/toolchain/info.mk $@
+ @touch $@
+endif
+endif
+
+ifdef CONFIG_BUILDBOT
+ifneq ($(wildcard $(TOPDIR)/.git),)
+ $(TOOLCHAIN_DIR)/stamp/.ver_check: $(TMP_DIR)/.build
+ cd "$(TOPDIR)"; git log --format=%h -1 toolchain > $(TMP_DIR)/.ver_check
+ cmp -s $(TMP_DIR)/.ver_check $@ || { \
+ rm -rf $(BUILD_DIR) $(STAGING_DIR) $(TOOLCHAIN_DIR) $(BUILD_DIR_TOOLCHAIN); \
+ mkdir -p $(TOOLCHAIN_DIR)/stamp; \
+ mv $(TMP_DIR)/.ver_check $@; \
+ }
+
+$(TOOLCHAIN_DIR)/info.mk $(STAGING_DIR)/.prepared: $(TOOLCHAIN_DIR)/stamp/.ver_check
+endif
endif
-$(curdir)/gcc/install:=$(curdir)/uClibc/install
# prerequisites for the individual targets
$(curdir)/ := .config prereq
-$(curdir)//prepare = $(STAGING_DIR)/include-host/.done
-$(curdir)//compile = $(1)/prepare
-$(curdir)//install = $(1)/compile
+$(curdir)//compile = $(STAGING_DIR)/.prepared $(TOOLCHAIN_DIR)/info.mk $(tools/stamp-compile)
+
+ifndef DUMP_TARGET_DB
+$(TOOLCHAIN_DIR)/stamp/.gcc-initial_installed:
+endif
+
+$(curdir)/install: $(curdir)/compile
-$(eval $(call stampfile,$(curdir),toolchain,install))
+$(eval $(call stampfile,$(curdir),toolchain,compile,$(TOOLCHAIN_DIR)/stamp/.gcc-initial_installed,,$(TOOLCHAIN_DIR)))
+$(eval $(call stampfile,$(curdir),toolchain,check,$(TMP_DIR)/.build))
$(eval $(call subdir,$(curdir)))