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)$(BR2_TARGET_PXELINUX)),y)
  21 NEED_NASM:=y
  22 DEPENDENCIES_HOST_PREREQ+=host-nasm
  23 endif
  24
  25 # We record the environ of the caller to see if we have to recheck
  26 # via dependencies.sh.
  27 dependencies:=.br.dependencies.host
  28
  29 ENV_DEP_HOST:=$(TOOL_BUILD_DIR)/bin/env.host
  30 ENV_DEP_HOST_SOURCE:=$(TOPDIR)/toolchain/dependencies/env.c
  31 $(ENV_DEP_HOST): $(ENV_DEP_HOST_SOURCE)
  32         @$(INSTALL) -d $(@D)
  33         @$(HOSTCC) $(HOST_CFLAGS) $(ENV_DEP_HOST_SOURCE) -o $@
  34
  35 $(dependencies): $(ENV_DEP_HOST) .config
  36         @$(ENV_DEP_HOST) > $@.new
  37         $(Q)if cmp $@ $@.new > /dev/null 2>&1; then \
  38                 rm -f $@.new; \
  39         else \
  40                 [ "x$(V)" != "x" ] && diff -u $@ $@.new; \
  41                 mv $@.new $@; \
  42                 set -e; \
  43                 HOSTCC="$(firstword $(HOSTCC))" MAKE="$(MAKE)" \
  44                         HOST_SED_DIR="$(HOST_SED_DIR)" \
  45                         NEED_RUBY="$(NEED_RUBY)" \
  46                         NEED_NASM="$(NEED_NASM)" \
  47                         $(TOPDIR)/toolchain/dependencies/dependencies.sh; \
  48                 $(MAKE1) host-sed $(DEPENDENCIES_HOST_PREREQ); \
  49                 touch -c $@; \
  50         fi
  51
  52 do-dependencies: $(dependencies)
  53         @HOSTCC="$(firstword $(HOSTCC))" MAKE="$(MAKE)" \
  54                 HOST_SED_DIR="$(HOST_SED_DIR)" \
  55                 NEED_RUBY="$(NEED_RUBY)" \
  56                 NEED_NASM="$(NEED_NASM)" \
  57                 $(TOPDIR)/toolchain/dependencies/dependencies.sh
  58         $(MAKE1) host-sed $(DEPENDENCIES_HOST_PREREQ)
  59
  60 dependencies-source: $(ENV_DEP_HOST_SOURCE)
  61
  62 dependencies-clean: sstrip_target-clean sstrip_host-clean host-sed-clean \
  63     host-nasm-clean
  64         rm -f $(ENV_DEP_HOST) $(dependencies)
  65
  66 dependencies-dirclean:
  67         @true
  68
  69 #############################################################
  70 #
  71 # Toplevel Makefile options
  72 #
  73 #############################################################