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# Handle local variable expor/import during the build
16#
17
18$(call assert-defined,LOCAL_MODULE)
19
20# For LOCAL_CFLAGS, LOCAL_CONLYFLAGS, LOCAL_CPPFLAGS and LOCAL_C_INCLUDES, etc,
21# we need to use the exported definitions of the closure of all modules
22# we depend on.
23#
24# I.e. If module 'foo' depends on 'bar' which depends on 'zoo',
25# then 'foo' will get the CFLAGS/CONLYFLAGS/CPPFLAGS/C_INCLUDES/... of both 'bar'
26# and 'zoo'
27#
28
29all_depends := $(call module-get-all-dependencies,$(LOCAL_MODULE))
30all_depends := $(filter-out $(LOCAL_MODULE),$(all_depends))
31
32imported_CFLAGS     := $(call module-get-listed-export,$(all_depends),CFLAGS)
33imported_CONLYFLAGS := $(call module-get-listed-export,$(all_depends),CONLYFLAGS)
34imported_CPPFLAGS   := $(call module-get-listed-export,$(all_depends),CPPFLAGS)
35imported_RENDERSCRIPT_FLAGS := $(call module-get-listed-export,$(all_depends),RENDERSCRIPT_FLAGS)
36imported_ASMFLAGS   := $(call module-get-listed-export,$(all_depends),ASMFLAGS)
37imported_C_INCLUDES := $(call module-get-listed-export,$(all_depends),C_INCLUDES)
38imported_LDFLAGS    := $(call module-get-listed-export,$(all_depends),LDFLAGS)
39
40ifdef NDK_DEBUG_IMPORTS
41    $(info Imports for module $(LOCAL_MODULE):)
42    $(info   CFLAGS='$(imported_CFLAGS)')
43    $(info   CONLYFLAGS='$(imported_CONLYFLAGS)')
44    $(info   CPPFLAGS='$(imported_CPPFLAGS)')
45    $(info   RENDERSCRIPT_FLAGS='$(imported_RENDERSCRIPT_FLAGS)')
46    $(info   ASMFLAGS='$(imported_ASMFLAGS)')
47    $(info   C_INCLUDES='$(imported_C_INCLUDES)')
48    $(info   LDFLAGS='$(imported_LDFLAGS)')
49    $(info All depends='$(all_depends)')
50endif
51
52#
53# The imported compiler flags are prepended to their LOCAL_XXXX value
54# (this allows the module to override them).
55#
56LOCAL_CFLAGS     := $(strip $(imported_CFLAGS) $(LOCAL_CFLAGS))
57LOCAL_CONLYFLAGS := $(strip $(imported_CONLYFLAGS) $(LOCAL_CONLYFLAGS))
58LOCAL_CPPFLAGS   := $(strip $(imported_CPPFLAGS) $(LOCAL_CPPFLAGS))
59LOCAL_RENDERSCRIPT_FLAGS := $(strip $(imported_RENDERSCRIPT_FLAGS) $(LOCAL_RENDERSCRIPT_FLAGS))
60LOCAL_ASMFLAGS := $(strip $(imported_ASMFLAGS) $(LOCAL_ASMFLAGS))
61LOCAL_LDFLAGS    := $(strip $(imported_LDFLAGS) $(LOCAL_LDFLAGS))
62
63#
64# The imported include directories are appended to their LOCAL_XXX value
65# (this allows the module to override them)
66#
67LOCAL_C_INCLUDES := $(strip $(LOCAL_C_INCLUDES) $(imported_C_INCLUDES))
68
69# Similarly, you want the imported flags to appear _after_ the LOCAL_LDLIBS
70# due to the way Unix linkers work (depending libraries must appear before
71# dependees on final link command).
72#
73imported_LDLIBS := $(call module-get-listed-export,$(all_depends),LDLIBS)
74
75LOCAL_LDLIBS := $(strip $(LOCAL_LDLIBS) $(imported_LDLIBS))
76
77# We're done here
78