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/compile
  11 #    build & install binutils
  12 # 2) toolchain/gcc/minimal/compile
  13 #    build & install a minimal gcc, needed for steps 3 & 4
  14 # 3) toolchain/kernel-headers/compile
  15 #    install kernel headers, needed for step 4
  16 # 4) toolchain/libc/headers/compile
  17 #    build & install libc headers & support files, needed for step 5
  18 # 5) toolchain/gcc/initial/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/final/compile
  23 #    build & install the final gcc
  24 #
  25 # For musl, steps 2 and 4 are skipped, and step 3 is done after 5
  26
  27 curdir:=toolchain
  28
  29 # subdirectories to descend into
  30 $(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) $(if $(CONFIG_USE_MOLD),mold)
  31
  32 # builddir dependencies
  33 ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
  34   ifdef CONFIG_USE_MUSL
  35     $(curdir)/gcc/initial/compile:=$(curdir)/binutils/compile
  36     $(curdir)/kernel-headers/compile:=$(curdir)/gcc/initial/compile
  37   else
  38     $(curdir)/builddirs += $(LIBC)/headers gcc/minimal
  39     $(curdir)/gcc/minimal/compile:=$(curdir)/binutils/compile
  40     $(curdir)/kernel-headers/compile:=$(curdir)/gcc/minimal/compile
  41     $(curdir)/$(LIBC)/headers/compile:=$(curdir)/kernel-headers/compile
  42     $(curdir)/gcc/initial/compile:=$(curdir)/$(LIBC)/headers/compile
  43   endif
  44
  45   $(curdir)/$(LIBC)/compile:=$(curdir)/gcc/initial/compile $(curdir)/kernel-headers/compile
  46   $(curdir)/gcc/final/compile:=$(curdir)/$(LIBC)/compile
  47 endif
  48
  49 ifndef DUMP_TARGET_DB
  50 ifneq ($(ARCH),)
  51   $(TOOLCHAIN_DIR)/info.mk: .config
  52         @for dir in $(TOOLCHAIN_DIR); do ( \
  53                 $(if $(QUIET),,set -x;) \
  54                 mkdir -p "$$dir"; \
  55                 cd "$$dir"; \
  56                 ln -nsf lib lib64; \
  57                 ln -nsf lib lib32; \
  58                 mkdir -p stamp lib usr/include usr/lib ; \
  59         ); done
  60         @grep GCC_VERSION $@ >/dev/null 2>&1 || $(INSTALL_DATA) $(TOPDIR)/toolchain/info.mk $@
  61         @touch $@
  62 endif
  63 endif
  64
  65 ifdef CONFIG_BUILDBOT
  66 ifneq ($(wildcard $(TOPDIR)/.git),)
  67   $(TOOLCHAIN_DIR)/stamp/.ver_check: $(TMP_DIR)/.build
  68         cd "$(TOPDIR)"; git log --format=%h -1 toolchain > $(TMP_DIR)/.ver_check
  69         cmp -s $(TMP_DIR)/.ver_check $@ || { \
  70                 rm -rf $(BUILD_DIR) $(STAGING_DIR) $(TOOLCHAIN_DIR) $(BUILD_DIR_TOOLCHAIN); \
  71                 mkdir -p $(TOOLCHAIN_DIR)/stamp; \
  72                 mv $(TMP_DIR)/.ver_check $@; \
  73         }
  74
  75 $(TOOLCHAIN_DIR)/info.mk $(STAGING_DIR)/.prepared: $(TOOLCHAIN_DIR)/stamp/.ver_check
  76 endif
  77 endif
  78
  79 # prerequisites for the individual targets
  80 $(curdir)/ := .config prereq
  81 $(curdir)//compile = $(STAGING_DIR)/.prepared $(TOOLCHAIN_DIR)/info.mk $(tools/stamp-compile)
  82
  83 ifndef DUMP_TARGET_DB
  84 $(TOOLCHAIN_DIR)/stamp/.gcc_final_installed:
  85 endif
  86
  87 $(curdir)/install: $(curdir)/compile
  88
  89 $(eval $(call stampfile,$(curdir),toolchain,compile,$(TOOLCHAIN_DIR)/stamp/.gcc_final_installed,,$(TOOLCHAIN_DIR)))
  90 $(eval $(call stampfile,$(curdir),toolchain,check,$(TMP_DIR)/.build))
  91 $(eval $(call subdir,$(curdir)))
  92