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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 file is included repeatedly from build/core/setup-abi.mk and is used
17# to setup the target toolchain for a given platform/abi combination.
18#
19
20$(call assert-defined,TARGET_PLATFORM TARGET_ARCH TARGET_ARCH_ABI)
21$(call assert-defined,NDK_APPS NDK_APP_STL)
22
23LLVM_VERSION_LIST := 2.6 2.7 2.8 2.9 3.0 3.1 3.2
24
25# Check that we have a toolchain that supports the current ABI.
26# NOTE: If NDK_TOOLCHAIN is defined, we're going to use it.
27#
28ifndef NDK_TOOLCHAIN
29    TARGET_TOOLCHAIN_LIST := $(strip $(sort $(NDK_ABI.$(TARGET_ARCH_ABI).toolchains)))
30
31    # Filter out the Clang toolchain, so that we can keep GCC as the default
32    # toolchain.
33    $(foreach _ver,$(LLVM_VERSION_LIST), \
34        $(eval TARGET_TOOLCHAIN_LIST := \
35            $(filter-out %-clang$(_ver),$(TARGET_TOOLCHAIN_LIST))))
36    # Filter out 4.7 which is considered experimental at this moment
37    TARGET_TOOLCHAIN_LIST := $(filter-out %4.7,$(TARGET_TOOLCHAIN_LIST))
38
39    ifndef TARGET_TOOLCHAIN_LIST
40        $(call __ndk_info,There is no toolchain that supports the $(TARGET_ARCH_ABI) ABI.)
41        $(call __ndk_info,Please modify the APP_ABI definition in $(NDK_APP_APPLICATION_MK) to use)
42        $(call __ndk_info,a set of the following values: $(NDK_ALL_ABIS))
43        $(call __ndk_error,Aborting)
44    endif
45    # Select the last toolchain from the sorted list.
46    # For now, this is enough to select armeabi-4.6 by default for ARM
47    TARGET_TOOLCHAIN := $(lastword $(TARGET_TOOLCHAIN_LIST))
48
49    # If NDK_TOOLCHAIN_VERSION is defined, we replace the toolchain version
50    # suffix with it.
51    #
52    ifdef NDK_TOOLCHAIN_VERSION
53        # Replace "clang" with the most recent verion
54        ifeq ($(NDK_TOOLCHAIN_VERSION),clang)
55            override NDK_TOOLCHAIN_VERSION := clang$(lastword $(LLVM_VERSION_LIST))
56        endif
57        # We assume the toolchain name uses dashes (-) as separators and doesn't
58        # contain any space. The following is a bit subtle, but essentially
59        # does the following:
60        #
61        #   1/ Use 'subst' to convert dashes into spaces, this generates a list
62        #   2/ Use 'chop' to remove the last element of the list
63        #   3/ Use 'subst' again to convert the spaces back into dashes
64        #
65        # So it TARGET_TOOLCHAIN is 'foo-bar-zoo-xxx', then
66        # TARGET_TOOLCHAIN_BASE will be 'foo-bar-zoo'
67        #
68        TARGET_TOOLCHAIN_BASE := $(subst $(space),-,$(call chop,$(subst -,$(space),$(TARGET_TOOLCHAIN))))
69        # if TARGET_TOOLCHAIN_BASE is llvm, remove clang from NDK_TOOLCHAIN_VERSION
70        VERSION := $(NDK_TOOLCHAIN_VERSION)
71        ifeq ($(TARGET_TOOLCHAIN_BASE),llvm)
72            VERSION := $(subst clang,,$(NDK_TOOLCHAIN_VERSION))
73        endif
74        TARGET_TOOLCHAIN := $(TARGET_TOOLCHAIN_BASE)-$(VERSION)
75        $(call ndk_log,Using target toolchain '$(TARGET_TOOLCHAIN)' for '$(TARGET_ARCH_ABI)' ABI (through NDK_TOOLCHAIN_VERSION))
76    else
77        $(call ndk_log,Using target toolchain '$(TARGET_TOOLCHAIN)' for '$(TARGET_ARCH_ABI)' ABI)
78    endif
79else # NDK_TOOLCHAIN is not empty
80    TARGET_TOOLCHAIN_LIST := $(strip $(filter $(NDK_TOOLCHAIN),$(NDK_ABI.$(TARGET_ARCH_ABI).toolchains)))
81    ifndef TARGET_TOOLCHAIN_LIST
82        $(call __ndk_info,The selected toolchain ($(NDK_TOOLCHAIN)) does not support the $(TARGET_ARCH_ABI) ABI.)
83        $(call __ndk_info,Please modify the APP_ABI definition in $(NDK_APP_APPLICATION_MK) to use)
84        $(call __ndk_info,a set of the following values: $(NDK_TOOLCHAIN.$(NDK_TOOLCHAIN).abis))
85        $(call __ndk_info,Or change your NDK_TOOLCHAIN definition.)
86        $(call __ndk_error,Aborting)
87    endif
88    TARGET_TOOLCHAIN := $(NDK_TOOLCHAIN)
89endif # NDK_TOOLCHAIN is not empty
90
91TARGET_ABI := $(TARGET_PLATFORM)-$(TARGET_ARCH_ABI)
92
93# setup sysroot variable.
94# SYSROOT_INC points to a directory that contains all public header
95# files for a given platform, and
96# SYSROOT_LIB points to libraries and object files used for linking
97# the generated target files properly.
98#
99SYSROOT_INC := $(NDK_PLATFORMS_ROOT)/$(TARGET_PLATFORM)/arch-$(TARGET_ARCH)
100SYSROOT_LINK := $(SYSROOT_INC)
101
102TARGET_PREBUILT_SHARED_LIBRARIES :=
103
104# Define default values for TOOLCHAIN_NAME, this can be overriden in
105# the setup file.
106TOOLCHAIN_NAME   := $(TARGET_TOOLCHAIN)
107TOOLCHAIN_VERSION := $(call last,$(subst -,$(space),$(TARGET_TOOLCHAIN)))
108
109# Define the root path of the toolchain in the NDK tree.
110TOOLCHAIN_ROOT   := $(NDK_ROOT)/toolchains/$(TOOLCHAIN_NAME)
111
112# Define the root path where toolchain prebuilts are stored
113TOOLCHAIN_PREBUILT_ROOT := $(call host-prebuilt-tag,$(TOOLCHAIN_ROOT))
114
115# Do the same for TOOLCHAIN_PREFIX. Note that we must chop the version
116# number from the toolchain name, e.g. arm-eabi-4.4.0 -> path/bin/arm-eabi-
117# to do that, we split at dashes, remove the last element, then merge the
118# result. Finally, add the complete path prefix.
119#
120TOOLCHAIN_PREFIX := $(call merge,-,$(call chop,$(call split,-,$(TOOLCHAIN_NAME))))-
121TOOLCHAIN_PREFIX := $(TOOLCHAIN_PREBUILT_ROOT)/bin/$(TOOLCHAIN_PREFIX)
122
123# We expect the gdbserver binary for this toolchain to be located at its root.
124TARGET_GDBSERVER := $(NDK_ROOT)/prebuilt/android-$(TARGET_ARCH)/gdbserver/gdbserver
125
126# compute NDK_APP_DST_DIR as the destination directory for the generated files
127NDK_APP_DST_DIR := $(NDK_APP_PROJECT_PATH)/libs/$(TARGET_ARCH_ABI)
128
129# Default build commands, can be overriden by the toolchain's setup script
130include $(BUILD_SYSTEM)/default-build-commands.mk
131
132# now call the toolchain-specific setup script
133include $(NDK_TOOLCHAIN.$(TARGET_TOOLCHAIN).setup)
134
135clean-installed-binaries::
136
137# Ensure that for debuggable applications, gdbserver will be copied to
138# the proper location
139
140NDK_APP_GDBSERVER := $(NDK_APP_DST_DIR)/gdbserver
141NDK_APP_GDBSETUP := $(NDK_APP_DST_DIR)/gdb.setup
142
143ifeq ($(NDK_APP_DEBUGGABLE),true)
144ifeq ($(TARGET_SONAME_EXTENSION),.so)
145
146installed_modules: $(NDK_APP_GDBSERVER)
147
148$(NDK_APP_GDBSERVER): PRIVATE_NAME    := $(TOOLCHAIN_NAME)
149$(NDK_APP_GDBSERVER): PRIVATE_SRC     := $(TARGET_GDBSERVER)
150$(NDK_APP_GDBSERVER): PRIVATE_DST     := $(NDK_APP_GDBSERVER)
151
152$(call generate-file-dir,$(NDK_APP_GDBSERVER))
153
154$(NDK_APP_GDBSERVER): clean-installed-binaries
155	@ $(HOST_ECHO) "Gdbserver      : [$(PRIVATE_NAME)] $(call pretty-dir,$(PRIVATE_DST))"
156	$(hide) $(call host-install,$(PRIVATE_SRC),$(PRIVATE_DST))
157
158installed_modules: $(NDK_APP_GDBSETUP)
159
160$(NDK_APP_GDBSETUP): PRIVATE_DST := $(NDK_APP_GDBSETUP)
161$(NDK_APP_GDBSETUP): PRIVATE_SOLIB_PATH := $(TARGET_OUT)
162$(NDK_APP_GDBSETUP): PRIVATE_SRC_DIRS := $(SYSROOT_INC)/usr/include
163
164$(NDK_APP_GDBSETUP):
165	@ $(HOST_ECHO) "Gdbsetup       : $(call pretty-dir,$(PRIVATE_DST))"
166	$(hide) $(HOST_ECHO) "set solib-search-path $(call host-path,$(PRIVATE_SOLIB_PATH))" > $(PRIVATE_DST)
167	$(hide) $(HOST_ECHO) "directory $(call host-path,$(call remove-duplicates,$(PRIVATE_SRC_DIRS)))" >> $(PRIVATE_DST)
168
169$(call generate-file-dir,$(NDK_APP_GDBSETUP))
170
171# This prevents parallel execution to clear gdb.setup after it has been written to
172$(NDK_APP_GDBSETUP): clean-installed-binaries
173endif
174endif
175
176# free the dictionary of LOCAL_MODULE definitions
177$(call modules-clear)
178
179$(call ndk-stl-select,$(NDK_APP_STL))
180
181# now parse the Android.mk for the application, this records all
182# module declarations, but does not populate the dependency graph yet.
183include $(NDK_APP_BUILD_SCRIPT)
184
185$(call ndk-stl-add-dependencies,$(NDK_APP_STL))
186
187# recompute all dependencies between modules
188$(call modules-compute-dependencies)
189
190# for debugging purpose
191ifdef NDK_DEBUG_MODULES
192$(call modules-dump-database)
193endif
194
195# now, really build the modules, the second pass allows one to deal
196# with exported values
197$(foreach __pass2_module,$(__ndk_modules),\
198    $(eval LOCAL_MODULE := $(__pass2_module))\
199    $(eval include $(BUILD_SYSTEM)/build-binary.mk)\
200)
201
202# Now compute the closure of all module dependencies.
203#
204# If APP_MODULES is not defined in the Application.mk, we
205# will build all modules that were listed from the top-level Android.mk
206# and the installable imported ones they depend on
207#
208ifeq ($(strip $(NDK_APP_MODULES)),)
209    WANTED_MODULES := $(call modules-get-all-installable,$(modules-get-top-list))
210else
211    WANTED_MODULES := $(call module-get-all-dependencies,$(NDK_APP_MODULES))
212endif
213
214WANTED_INSTALLED_MODULES += $(call map,module-get-installed,$(WANTED_MODULES))
215