[package] base-files: add an experimental "-c" flag which tries to preserve *all...

[openwrt.git] / toolchain / Makefile

diff --git a/toolchain/Makefile b/toolchain/Makefile
index 8636bce..7c96c85 100644 (file)
--- a/toolchain/Makefile
+++ b/toolchain/Makefile
@@ -1,63 +1,80 @@
 # 
-# Copyright (C) 2006 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
 #
-include $(TOPDIR)/rules.mk
+# 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
+#
 
-TARGETS-y:=kernel-headers
-TARGETS-$(CONFIG_GDB) += gdb
-ifeq ($(CONFIG_NATIVE_TOOLCHAIN),)
-  TARGETS-y+=binutils gcc uClibc
-endif
+curdir:=toolchain
 
-TARGETS_DOWNLOAD:=$(patsubst %,%-download,$(TARGETS-y))
-TARGETS_PREPARE:=$(patsubst %,%-prepare,$(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
-
-all: install
-download: $(TARGETS_DOWNLOAD)
-compile: $(TARGETS_COMPILE)
-install: $(STAMP) 
-clean: $(TARGETS_CLEAN)
-
-ifneq ($(shell $(SCRIPT_DIR)/timestamp.pl -p . $(STAMP)),$(STAMP))
-  $(STAMP): $(TARGETS_INSTALL)
-endif
+# subdirectories to descend into
+$(curdir)/builddirs := $(if $(CONFIG_GDB),gdb) $(if $(CONFIG_INSIGHT),insight) $(if $(CONFIG_EXTERNAL_TOOLCHAIN),,kernel-headers binutils gcc/minimal gcc/initial gcc/final $(LIBC) $(if $(CONFIG_GLIBC_PORTS),glibc-ports))
+$(curdir)/builddirs-compile:=$($(curdir)/builddirs-prepare)
+$(curdir)/builddirs-install:=$($(curdir)/builddirs-compile)
 
-uClibc-prepare: kernel-headers-prepare
-ifeq ($(CONFIG_NATIVE_TOOLCHAIN),)
-  binutils-prepare: uClibc-prepare
-  gcc-prepare: binutils-install
-  uClibc-compile: gcc-compile
+# builddir dependencies
+ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
+  $(curdir)/$(LIBC)/prepare:=$(curdir)/kernel-headers/install
+  $(curdir)/gcc/minimal/compile:=$(curdir)/binutils/install
+  $(curdir)/kernel-headers/install:=$(curdir)/gcc/minimal/install
+  $(curdir)/gcc/initial/compile:=$(curdir)/$(LIBC)/prepare
+  $(curdir)/$(LIBC)/compile:=$(curdir)/gcc/initial/install
+  $(curdir)/gcc/final/compile:=$(curdir)/$(LIBC)/compile
+  $(curdir)/$(LIBC)/install:=$(curdir)/gcc/final/install
+  ifneq ($(CONFIG_GLIBC_PORTS),)
+    $(curdir)/glibc/prepare:=$(curdir)/glibc-ports/prepare
+  endif
 endif
-gcc-install: uClibc-install
 
-$(STAMP):
-       mkdir -p $(shell dirname $@)
-       touch $@
+ifdef CONFIG_GCC_VERSION_LLVM
+  $(curdir)/builddirs += llvm
+  $(curdir)/gcc/minimal/compile += $(curdir)/llvm/install
+endif
 
-$(STAGING_DIR)/$(REAL_GNU_TARGET_NAME):
-       @mkdir -p $@
-       @ln -sf ../lib $@/lib
+ifndef DUMP_TARGET_DB
+ifneq ($(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
+endif
 
-$(TOOLCHAIN_BUILD_DIR):
-       @mkdir -p $@
+# prerequisites for the individual targets
+$(curdir)/ := .config prereq
+$(curdir)//prepare = $(STAGING_DIR)/.prepared $(TOOLCHAIN_DIR)/info.mk
+$(curdir)//compile = $(1)/prepare
+$(curdir)//install = $(1)/compile
 
-%-prereq %-download %-clean %-refresh: FORCE
-       $(MAKE) -C $* $(patsubst $*-%,%,$@)
+ifndef DUMP_TARGET_DB
+$(TOOLCHAIN_DIR)/stamp/.gcc-initial_installed:
+endif
 
-%-prepare: $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME) $(TOOLCHAIN_BUILD_DIR)       
-       $(MAKE) -C $* $(patsubst $*-%,%,$@)
+$(eval $(call stampfile,$(curdir),toolchain,install,$(TOOLCHAIN_DIR)/stamp/.gcc-initial_installed,,$(TOOLCHAIN_DIR)))
+$(eval $(call subdir,$(curdir)))
 
-%-compile: %-prepare FORCE
-       $(MAKE) -C $* $(patsubst $*-%,%,$@)
-       
-%-install: %-compile FORCE
-       $(MAKE) -C $* $(patsubst $*-%,%,$@)