66 lines
2.3 KiB
Makefile
66 lines
2.3 KiB
Makefile
# Copyright (C) 2009 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# Handle local variable expor/import during the build
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#
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$(call assert-defined,LOCAL_MODULE)
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# For LOCAL_CFLAGS, LOCAL_CPPFLAGS and LOCAL_C_INCLUDES, we need
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# to use the exported definitions of the closure of all modules
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# we depend on.
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#
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# I.e. If module 'foo' depends on 'bar' which depends on 'zoo',
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# then 'foo' will get the CFLAGS/CPPFLAGS/C_INCLUDES of both 'bar'
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# and 'zoo'
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#
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all_depends := $(call module-get-all-dependencies,$(LOCAL_MODULE))
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all_depends := $(filter-out $(LOCAL_MODULE),$(all_depends))
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imported_CFLAGS := $(call module-get-listed-export,$(all_depends),CFLAGS)
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imported_CPPFLAGS := $(call module-get-listed-export,$(all_depends),CPPFLAGS)
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imported_C_INCLUDES := $(call module-get-listed-export,$(all_depends),C_INCLUDES)
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ifdef NDK_DEBUG_IMPORTS
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$(info Imports for module $(LOCAL_MODULE):)
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$(info CFLAGS='$(imported_CFLAGS)')
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$(info CPPFLAGS='$(imported_CPPFLAGS)')
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$(info C_INCLUDES='$(imported_C_INCLUDES)')
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$(info All depends='$(all_depends)')
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endif
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#
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# The imported compiler flags are prepended to their LOCAL_XXXX value
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# (this allows the module to override them).
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#
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LOCAL_CFLAGS := $(strip $(imported_CFLAGS) $(LOCAL_CFLAGS))
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LOCAL_CPPFLAGS := $(strip $(imported_CPPFLAGS) $(LOCAL_CPPFLAGS))
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#
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# The imported include directories are appended to their LOCAL_XXX value
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# (this allows the module to override them)
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#
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LOCAL_C_INCLUDES := $(strip $(LOCAL_C_INCLUDES) $(imported_C_INCLUDES))
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# Similarly, you want the imported flags to appear _after_ the LOCAL_LDLIBS
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# due to the way Unix linkers work (depending libraries must appear before
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# dependees on final link command).
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#
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imported_LDLIBS := $(call module-get-listed-export,$(all_depends),LDLIBS)
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LOCAL_LDLIBS := $(strip $(LOCAL_LDLIBS) $(imported_LDLIBS))
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# We're done here
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