toolchain/dependencies/dependencies.mk

   1 ######################################################################
   2 #
   3 # Check buildroot dependencies and bail out if the user's
   4 # system is judged to be lacking....
   5 #
   6 ######################################################################
   7
   8 DEPENDENCIES_HOST_PREREQ:=
   9 ifeq ($(BR2_STRIP_sstrip),y)
  10 DEPENDENCIES_HOST_PREREQ+=sstrip_host
  11 endif
  12 ifneq ($(findstring y,$(BR2_KERNEL_HEADERS_LZMA)),)
  13 DEPENDENCIES_HOST_PREREQ+=host-lzma
  14 endif
  15
  16 # grub2 needs ruby to generate its Makefiles. brrr
  17 ifeq ($(BR2_TARGET_GRUB2),y)
  18 NEED_RUBY:=y
  19 endif
  20 ifeq ($(findstring y,$(BR2_TARGET_SYSLINUX)$(BR2_TARGET_PXELINUX)),y)
  21 NEED_NASM:=y
  22 DEPENDENCIES_HOST_PREREQ+=host-nasm
  23 endif
  24 ifeq ($(BR2_GCC_CROSS_GCJ),y)
  25 NEED_GCJ_FOR_ECJX:=$(HOSTGCJ)
  26 endif
  27 ifndef GCJ_FOR_ECJX
  28 GCJ_FOR_ECJX:=$(HOSTGCJ)
  29 export GCJ_FOR_ECJX
  30 endif
  31
  32 # We record the environ of the caller to see if we have to recheck
  33 # via dependencies.sh.
  34 dependencies:=.br.dependencies.host
  35
  36 ENV_DEP_HOST:=$(TOOL_BUILD_DIR)/bin/env.host
  37 ENV_DEP_HOST_SOURCE:=$(TOPDIR)/toolchain/dependencies/env.c
  38 $(ENV_DEP_HOST): $(ENV_DEP_HOST_SOURCE)
  39         @$(INSTALL) -d $(@D)
  40         @$(HOSTCC) $(HOST_CFLAGS) $(ENV_DEP_HOST_SOURCE) -o $@
  41
  42 $(dependencies): $(ENV_DEP_HOST) .config
  43         @$(ENV_DEP_HOST) > $@.new
  44         $(Q)if cmp $@ $@.new > /dev/null 2>&1; then \
  45                 rm -f $@.new; \
  46         else \
  47                 [ "x$(V)" != "x" ] && diff -u $@ $@.new; \
  48                 mv $@.new $@; \
  49                 set -e; \
  50                 HOSTCC="$(firstword $(HOSTCC))" MAKE="$(MAKE)" \
  51                         HOST_SED_DIR="$(HOST_SED_DIR)" \
  52                         NEED_RUBY="$(NEED_RUBY)" \
  53                         NEED_NASM="$(NEED_NASM)" \
  54                         NEED_GCJ_FOR_ECJX="$(NEED_GCJ_FOR_ECJX)" \
  55                         $(TOPDIR)/toolchain/dependencies/dependencies.sh; \
  56                 $(MAKE1) host-sed $(DEPENDENCIES_HOST_PREREQ); \
  57                 touch -c $@; \
  58         fi
  59
  60 do-dependencies: $(dependencies)
  61         @HOSTCC="$(firstword $(HOSTCC))" MAKE="$(MAKE)" \
  62                 HOST_SED_DIR="$(HOST_SED_DIR)" \
  63                 NEED_RUBY="$(NEED_RUBY)" \
  64                 NEED_NASM="$(NEED_NASM)" \
  65                 NEED_GCJ_FOR_ECJX="$(NEED_GCJ_FOR_ECJX)" \
  66                 $(TOPDIR)/toolchain/dependencies/dependencies.sh
  67         $(MAKE1) host-sed $(DEPENDENCIES_HOST_PREREQ)
  68
  69 dependencies-source: $(ENV_DEP_HOST_SOURCE)
  70
  71 dependencies-clean: sstrip_target-clean sstrip_host-clean host-sed-clean \
  72     host-nasm-clean
  73         rm -f $(ENV_DEP_HOST) $(dependencies)
  74
  75 dependencies-dirclean:
  76         @true
  77
  78 #############################################################
  79 #
  80 # Toplevel Makefile options
  81 #
  82 #############################################################