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      1 # Copyright (C) 2009 The Android Open Source Project
      2 #
      3 # Licensed under the Apache License, Version 2.0 (the "License");
      4 # you may not use this file except in compliance with the License.
      5 # You may obtain a copy of the License at
      6 #
      7 #      http://www.apache.org/licenses/LICENSE-2.0
      8 #
      9 # Unless required by applicable law or agreed to in writing, software
     10 # distributed under the License is distributed on an "AS IS" BASIS,
     11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     12 # See the License for the specific language governing permissions and
     13 # limitations under the License.
     14 #
     15 
     16 # this script is included repeatedly by main.mk to add a new toolchain
     17 # definition to the NDK build system.
     18 #
     19 # '_config_mk' must be defined as the path of a toolchain
     20 # configuration file (config.mk) that will be included here.
     21 #
     22 $(call assert-defined, _config_mk)
     23 
     24 # The list of variables that must or may be defined
     25 # by the toolchain configuration file
     26 #
     27 NDK_TOOLCHAIN_VARS_REQUIRED := TOOLCHAIN_ABIS TOOLCHAIN_ARCH
     28 NDK_TOOLCHAIN_VARS_OPTIONAL :=
     29 
     30 # Clear variables that are supposed to be defined by the config file
     31 $(call clear-vars,$(NDK_TOOLCHAIN_VARS_REQUIRED))
     32 $(call clear-vars,$(NDK_TOOLCHAIN_VARS_OPTIONAL))
     33 
     34 # Include the config file
     35 include $(_config_mk)
     36 
     37 # Plug in the undefined
     38 ifeq ($(TOOLCHAIN_ABIS)$(TOOLCHAIN_ARCH),)
     39 ifeq (1,$(words $(filter-out $(NDK_KNOWN_ARCHS),$(NDK_FOUND_ARCHS))))
     40 TOOLCHAIN_ARCH := $(filter-out $(NDK_KNOWN_ARCHS),$(NDK_FOUND_ARCHS))
     41 TOOLCHAIN_ABIS := $(TOOLCHAIN_ARCH) $(NDK_KNOWN_ABIS:%=$(TOOLCHAIN_ARCH)%) $(NDK_KNOWN_ABIS:%=$(TOOLCHAIN_ARCH)bc%)
     42 endif
     43 endif
     44 
     45 ifeq ($(TOOLCHAIN_ABIS)$(TOOLCHAIN_ARCH),)
     46 # Ignore if both TOOLCHAIN_ABIS and TOOLCHAIN_ARCH are not defined
     47 else
     48 
     49 # Check that the proper variables were defined
     50 $(call check-required-vars,$(NDK_TOOLCHAIN_VARS_REQUIRED),$(_config_mk))
     51 
     52 # Check that the file didn't do something stupid
     53 $(call assert-defined, _config_mk)
     54 
     55 # Now record the toolchain-specific information
     56 _dir  := $(patsubst %/,%,$(dir $(_config_mk)))
     57 _name := $(notdir $(_dir))
     58 _arch := $(TOOLCHAIN_ARCH)
     59 _abis := $(TOOLCHAIN_ABIS)
     60 
     61 _toolchain := NDK_TOOLCHAIN.$(_name)
     62 
     63 # check that the toolchain name is unique
     64 $(if $(strip $($(_toolchain).defined)),\
     65   $(call __ndk_error,Toolchain $(_name) defined in $(_parent) is\
     66                      already defined in $(NDK_TOOLCHAIN.$(_name).defined)))
     67 
     68 $(_toolchain).defined := $(_toolchain_config)
     69 $(_toolchain).arch    := $(_arch)
     70 $(_toolchain).abis    := $(_abis)
     71 $(_toolchain).setup   := $(wildcard $(_dir)/setup.mk)
     72 
     73 $(if $(strip $($(_toolchain).setup)),,\
     74   $(call __ndk_error, Toolchain $(_name) lacks a setup.mk in $(_dir)))
     75 
     76 NDK_ALL_TOOLCHAINS += $(_name)
     77 NDK_ALL_ARCHS      += $(_arch)
     78 NDK_ALL_ABIS       += $(_abis)
     79 
     80 # NDK_ABI.<abi>.toolchains records the list of toolchains that support
     81 # a given ABI
     82 #
     83 $(foreach _abi,$(_abis),\
     84     $(eval NDK_ABI.$(_abi).toolchains += $(_name)) \
     85     $(eval NDK_ABI.$(_abi).arch := $(sort $(NDK_ABI.$(_abi).arch) $(_arch)))\
     86 )
     87 
     88 NDK_ARCH.$(_arch).toolchains += $(_name)
     89 NDK_ARCH.$(_arch).abis := $(sort $(NDK_ARCH.$(_arch).abis) $(_abis))
     90 
     91 endif
     92 
     93 # done
     94