434 lines
15 KiB
Makefile
434 lines
15 KiB
Makefile
# Copyright (C) 2009-2010 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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# Initialization of the NDK build system. This file is included by
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# several build scripts.
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#
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# Define NDK_LOG in your environment to display log traces when
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# using the build scripts. See also the definition of ndk_log below.
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#
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NDK_LOG := $(strip $(NDK_LOG))
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# Check that we have at least GNU Make 3.81
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# We do this by detecting whether 'lastword' is supported
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#
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MAKE_TEST := $(lastword a b c d e f)
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ifneq ($(MAKE_TEST),f)
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$(error Android NDK: GNU Make version $(MAKE_VERSION) is too low (should be >= 3.81))
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endif
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ifdef NDK_LOG
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$(info Android NDK: GNU Make version $(MAKE_VERSION) detected)
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endif
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# NDK_ROOT *must* be defined and point to the root of the NDK installation
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NDK_ROOT := $(strip $(NDK_ROOT))
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ifndef NDK_ROOT
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$(error ERROR while including init.mk: NDK_ROOT must be defined !)
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endif
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ifneq ($(words $(NDK_ROOT)),1)
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$(info,The Android NDK installation path contains spaces: '$(NDK_ROOT)')
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$(error,Please fix the problem by reinstalling to a different location.)
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endif
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# ====================================================================
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#
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# Define a few useful variables and functions.
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# More stuff will follow in definitions.mk.
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#
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# ====================================================================
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# Used to output warnings and error from the library, it's possible to
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# disable any warnings or errors by overriding these definitions
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# manually or by setting NDK_NO_WARNINGS or NDK_NO_ERRORS
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__ndk_name := Android NDK
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__ndk_info = $(info $(__ndk_name): $1 $2 $3 $4 $5)
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__ndk_warning = $(warning $(__ndk_name): $1 $2 $3 $4 $5)
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__ndk_error = $(error $(__ndk_name): $1 $2 $3 $4 $5)
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ifdef NDK_NO_WARNINGS
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__ndk_warning :=
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endif
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ifdef NDK_NO_ERRORS
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__ndk_error :=
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endif
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# -----------------------------------------------------------------------------
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# Function : ndk_log
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# Arguments: 1: text to print when NDK_LOG is defined
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# Returns : None
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# Usage : $(call ndk_log,<some text>)
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# -----------------------------------------------------------------------------
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ifdef NDK_LOG
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ndk_log = $(info $(__ndk_name): $1)
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else
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ndk_log :=
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endif
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# ====================================================================
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#
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# Host system auto-detection.
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#
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# ====================================================================
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#
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# Determine host system and architecture from the environment
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#
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HOST_OS := $(strip $(HOST_OS))
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ifndef HOST_OS
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# On all modern variants of Windows (including Cygwin and Wine)
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# the OS environment variable is defined to 'Windows_NT'
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#
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# The value of PROCESSOR_ARCHITECTURE will be x86 or AMD64
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#
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ifeq ($(OS),Windows_NT)
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HOST_OS := windows
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else
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# For other systems, use the `uname` output
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UNAME := $(shell uname -s)
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ifneq (,$(findstring Linux,$(UNAME)))
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HOST_OS := linux
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endif
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ifneq (,$(findstring Darwin,$(UNAME)))
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HOST_OS := darwin
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endif
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# We should not be there, but just in case !
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ifneq (,$(findstring CYGWIN,$(UNAME)))
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HOST_OS := windows
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endif
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ifeq ($(HOST_OS),)
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$(call __ndk_info,Unable to determine HOST_OS from uname -s: $(UNAME))
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$(call __ndk_info,Please define HOST_OS in your environment.)
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$(call __ndk_error,Aborting.)
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endif
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endif
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$(call ndk_log,Host OS was auto-detected: $(HOST_OS))
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else
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$(call ndk_log,Host OS from environment: $(HOST_OS))
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endif
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# For all systems, we will have HOST_OS_BASE defined as
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# $(HOST_OS), except on Cygwin where we will have:
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#
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# HOST_OS == cygwin
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# HOST_OS_BASE == windows
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#
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# Trying to detect that we're running from Cygwin is tricky
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# because we can't use $(OSTYPE): It's a Bash shell variable
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# that is not exported to sub-processes, and isn't defined by
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# other shells (for those with really weird setups).
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#
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# Instead, we assume that a program named /bin/uname.exe
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# that can be invoked and returns a valid value corresponds
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# to a Cygwin installation.
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#
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HOST_OS_BASE := $(HOST_OS)
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ifeq ($(HOST_OS),windows)
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ifneq (,$(strip $(wildcard /bin/uname.exe)))
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$(call ndk_log,Found /bin/uname.exe on Windows host, checking for Cygwin)
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UNAME := $(shell /bin/uname.exe -s 2>NUL)
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$(call ndk_log,uname -s returned: $(UNAME))
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ifneq (,$(filter CYGWIN%,$(UNAME)))
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$(call ndk_log,Cygwin detected!)
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HOST_OS := cygwin
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else
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$(call ndk_log,Cygwin *not* detected!)
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endif
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endif
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endif
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ifneq ($(HOST_OS),$(HOST_OS_BASE))
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$(call ndk_log, Host operating system detected: $(HOST_OS), base OS: $(HOST_OS_BASE))
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else
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$(call ndk_log, Host operating system detected: $(HOST_OS))
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endif
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HOST_ARCH := $(strip $(HOST_ARCH))
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ifndef HOST_ARCH
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ifeq ($(HOST_OS_BASE),windows)
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HOST_ARCH := $(PROCESSOR_ARCHITECTURE)
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ifeq ($(HOST_ARCH),AMD64)
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HOST_ARCH := x86
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endif
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else # HOST_OS_BASE != windows
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UNAME := $(shell uname -m)
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ifneq (,$(findstring 86,$(UNAME)))
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HOST_ARCH := x86
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endif
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# We should probably should not care at all
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ifneq (,$(findstring Power,$(UNAME)))
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HOST_ARCH := ppc
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endif
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ifeq ($(HOST_ARCH),)
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$(call __ndk_info,Unsupported host architecture: $(UNAME))
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$(call __ndk_error,Aborting)
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endif
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endif # HOST_OS_BASE != windows
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$(call ndk_log,Host CPU was auto-detected: $(HOST_ARCH))
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else
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$(call ndk_log,Host CPU from environment: $(HOST_ARCH))
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endif
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HOST_TAG := $(HOST_OS_BASE)-$(HOST_ARCH)
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# The directory separator used on this host
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HOST_DIRSEP := :
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ifeq ($(HOST_OS),windows)
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HOST_DIRSEP := ;
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endif
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# The host executable extension
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HOST_EXEEXT :=
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ifeq ($(HOST_OS),windows)
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HOST_EXEEXT := .exe
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endif
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# If we are on Windows, we need to check that we are not running
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# Cygwin 1.5, which is deprecated and won't run our toolchain
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# binaries properly.
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#
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ifeq ($(HOST_TAG),windows-x86)
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ifeq ($(HOST_OS),cygwin)
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# On cygwin, 'uname -r' returns something like 1.5.23(0.225/5/3)
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# We recognize 1.5. as the prefix to look for then.
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CYGWIN_VERSION := $(shell uname -r)
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ifneq ($(filter XX1.5.%,XX$(CYGWIN_VERSION)),)
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$(call __ndk_info,You seem to be running Cygwin 1.5, which is not supported.)
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$(call __ndk_info,Please upgrade to Cygwin 1.7 or higher.)
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$(call __ndk_error,Aborting.)
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endif
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endif
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# special-case the host-tag
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HOST_TAG := windows
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endif
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$(call ndk_log,HOST_TAG set to $(HOST_TAG))
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# Check for NDK-specific versions of our host tools
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HOST_PREBUILT := $(strip $(wildcard $(NDK_ROOT)/prebuilt/$(HOST_TAG)/bin))
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ifdef HOST_PREBUILT
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$(call ndk_log,Host tools prebuilt directory: $(HOST_PREBUILT))
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HOST_AWK := $(wildcard $(HOST_PREBUILT)/awk$(HOST_EXEEXT))
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HOST_SED := $(wildcard $(HOST_PREBUILT)/sed$(HOST_EXEEXT))
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HOST_MAKE := $(wildcard $(HOST_PREBUILT)/make$(HOST_EXEEXT))
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else
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$(call ndk_log,Host tols prebuilt directory not found, using system tools)
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endif
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HOST_ECHO := $(strip $(HOST_ECHO))
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ifndef HOST_ECHO
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HOST_ECHO := $(strip $(wildcard $(NDK_ROOT)/prebuilt/$(HOST_TAG)/bin/echo$(HOST_EXEEXT)))
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endif
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ifndef HOST_ECHO
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HOST_ECHO := echo
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endif
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$(call ndk_log,Host 'echo' tool: $(HOST_ECHO))
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#
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# Verify that the 'awk' tool has the features we need.
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# Both Nawk and Gawk do.
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#
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HOST_AWK := $(strip $(HOST_AWK))
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ifndef HOST_AWK
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HOST_AWK := awk
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endif
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$(call ndk_log,Host 'awk' tool: $(HOST_AWK))
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# Location of all awk scripts we use
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BUILD_AWK := $(NDK_ROOT)/build/awk
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AWK_TEST := $(shell $(HOST_AWK) -f $(BUILD_AWK)/check-awk.awk)
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$(call ndk_log,Host 'awk' test returned: $(AWK_TEST))
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ifneq ($(AWK_TEST),Pass)
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$(call __ndk_info,Host 'awk' tool is outdated. Please define HOST_AWK to point to Gawk or Nawk !)
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$(call __ndk_error,Aborting.)
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endif
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#
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# On Cygwin, define the 'cygwin-to-host-path' function here depending on the
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# environment. The rules are the following:
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#
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# 1/ If "cygpath' is not in your path, do not use it at all. It looks like
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# this allows to build with the NDK from MSys without problems.
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#
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# 2/ Since invoking 'cygpath -m' from GNU Make for each source file is
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# _very_ slow, try to generate a Make function that performs the mapping
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# from cygwin to host paths through simple substitutions.
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#
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# 3/ In case we fail horribly, allow the user to define NDK_USE_CYGPATH to '1'
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# in order to use 'cygpath -m' nonetheless. This is only a backup plan in
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# case our automatic substitution function doesn't work (only likely if you
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# have a very weird cygwin setup).
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#
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# The function for 2/ is generated by an awk script. It's really a series
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# of nested patsubst calls, that look like:
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#
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# cygwin-to-host-path = $(patsubst /cygdrive/c/%,c:/%,\
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# $(patsusbt /cygdrive/d/%,d:/%, \
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# $1)
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#
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# except that the actual definition is built from the list of mounted
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# drives as reported by "mount" and deals with drive letter cases (i.e.
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# '/cygdrive/c' and '/cygdrive/C')
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#
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ifeq ($(HOST_OS),cygwin)
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CYGPATH := $(strip $(HOST_CYGPATH))
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ifndef CYGPATH
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$(call ndk_log, Probing for 'cygpath' program)
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CYGPATH := $(strip $(shell which cygpath 2>/dev/null))
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ifndef CYGPATH
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$(call ndk_log, 'cygpath' was *not* found in your path)
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else
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$(call ndk_log, 'cygpath' found as: $(CYGPATH))
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endif
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endif
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ifndef CYGPATH
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cygwin-to-host-path = $1
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else
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ifeq ($(NDK_USE_CYGPATH),1)
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$(call ndk_log, Forced usage of 'cygpath -m' through NDK_USE_CYGPATH=1)
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cygwin-to-host-path = $(strip $(shell $(CYGPATH) -m $1))
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else
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# Call an awk script to generate a Makefile fragment used to define a function
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WINDOWS_HOST_PATH_FRAGMENT := $(shell mount | $(HOST_AWK) -f $(BUILD_AWK)/gen-windows-host-path.awk)
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ifeq ($(NDK_LOG),1)
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$(info Using cygwin substitution rules:)
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$(eval $(shell mount | $(HOST_AWK) -f $(BUILD_AWK)/gen-windows-host-path.awk -vVERBOSE=1))
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endif
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$(eval cygwin-to-host-path = $(WINDOWS_HOST_PATH_FRAGMENT))
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endif
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endif
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endif # HOST_OS == cygwin
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# The location of the build system files
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BUILD_SYSTEM := $(NDK_ROOT)
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# Include common definitions
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include $(BUILD_SYSTEM)/definitions.mk
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# ====================================================================
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#
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# Read all toolchain-specific configuration files.
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#
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# Each toolchain must have a corresponding config.mk file located
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# in build/toolchains/<name>/ that will be included here.
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#
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# Each one of these files should define the following variables:
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# TOOLCHAIN_NAME toolchain name (e.g. arm-linux-androideabi-4.4.3)
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# TOOLCHAIN_ABIS list of target ABIs supported by the toolchain.
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#
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# Then, it should include $(ADD_TOOLCHAIN) which will perform
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# book-keeping for the build system.
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#
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# ====================================================================
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# the build script to include in each toolchain config.mk
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ADD_TOOLCHAIN := $(BUILD_SYSTEM)/add-toolchain.mk
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# the list of all toolchains in this NDK
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NDK_ALL_TOOLCHAINS :=
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NDK_ALL_ABIS :=
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TOOLCHAIN_CONFIGS := $(wildcard $(NDK_ROOT)/toolchains/*/config.mk)
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$(foreach _config_mk,$(TOOLCHAIN_CONFIGS),\
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$(eval include $(BUILD_SYSTEM)/add-toolchain.mk)\
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)
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NDK_ALL_TOOLCHAINS := $(call remove-duplicates,$(NDK_ALL_TOOLCHAINS))
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NDK_ALL_ABIS := $(call remove-duplicates,$(NDK_ALL_ABIS))
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# Allow the user to define NDK_TOOLCHAIN to a custom toolchain name.
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# This is normally used when the NDK release comes with several toolchains
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# for the same architecture (generally for backwards-compatibility).
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#
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NDK_TOOLCHAIN := $(strip $(NDK_TOOLCHAIN))
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ifdef NDK_TOOLCHAIN
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# check that the toolchain name is supported
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$(if $(filter-out $(NDK_ALL_TOOLCHAINS),$(NDK_TOOLCHAIN)),\
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$(call __ndk_info,NDK_TOOLCHAIN is defined to the unsupported value $(NDK_TOOLCHAIN)) \
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$(call __ndk_info,Please use one of the following values: $(NDK_ALL_TOOLCHAINS))\
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$(call __ndk_error,Aborting)\
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,)
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$(call ndk_log, Using specific toolchain $(NDK_TOOLCHAIN))
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endif
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$(call ndk_log, This NDK supports the following toolchains and target ABIs:)
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$(foreach tc,$(NDK_ALL_TOOLCHAINS),\
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$(call ndk_log, $(space)$(space)$(tc): $(NDK_TOOLCHAIN.$(tc).abis))\
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)
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# ====================================================================
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#
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# Read all platform-specific configuration files.
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#
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# Each platform must be located in build/platforms/android-<apilevel>
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# where <apilevel> corresponds to an API level number, with:
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# 3 -> Android 1.5
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# 4 -> next platform release
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#
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# ====================================================================
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# The platform files were moved in the Android source tree from
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# $TOP/ndk/build/platforms to $TOP/development/ndk/platforms. However,
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# the official NDK release packages still place them under the old
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# location for now, so deal with this here
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#
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NDK_PLATFORMS_ROOT := $(strip $(NDK_PLATFORMS_ROOT))
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ifndef NDK_PLATFORMS_ROOT
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NDK_PLATFORMS_ROOT := $(strip $(wildcard $(NDK_ROOT)/platforms))
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ifndef NDK_PLATFORMS_ROOT
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NDK_PLATFORMS_ROOT := $(strip $(wildcard $(NDK_ROOT)/build/platforms))
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endif
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ifndef NDK_PLATFORMS_ROOT
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$(call __ndk_info,Could not find platform files (headers and libraries))
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$(if $(strip $(wildcard $(NDK_ROOT)/RELEASE.TXT)),\
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$(call __ndk_info,Please define NDK_PLATFORMS_ROOT to point to a valid directory.)\
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,\
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$(call __ndk_info,Please run build/tools/build-platforms.sh to build the corresponding directory.)\
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)
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$(call __ndk_error,Aborting)
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endif
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$(call ndk_log,Found platform root directory: $(NDK_PLATFORMS_ROOT))
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endif
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ifeq ($(strip $(wildcard $(NDK_PLATFORMS_ROOT)/android-*)),)
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$(call __ndk_info,Your NDK_PLATFORMS_ROOT points to an invalid directory)
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$(call __ndk_info,Current value: $(NDK_PLATFORMS_ROOT))
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$(call __ndk_error,Aborting)
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endif
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NDK_ALL_PLATFORMS := $(strip $(notdir $(wildcard $(NDK_PLATFORMS_ROOT)/android-*)))
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$(call ndk_log,Found supported platforms: $(NDK_ALL_PLATFORMS))
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$(foreach _platform,$(NDK_ALL_PLATFORMS),\
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$(eval include $(BUILD_SYSTEM)/add-platform.mk)\
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)
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# we're going to find the maximum platform number of the form android-<number>
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# ignore others, which could correspond to special and experimental cases
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NDK_ALL_PLATFORM_LEVELS := $(filter android-%,$(NDK_ALL_PLATFORMS))
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NDK_ALL_PLATFORM_LEVELS := $(patsubst android-%,%,$(NDK_ALL_PLATFORM_LEVELS))
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$(call ndk_log,Found stable platform levels: $(NDK_ALL_PLATFORM_LEVELS))
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NDK_MAX_PLATFORM_LEVEL := 3
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$(foreach level,$(NDK_ALL_PLATFORM_LEVELS),\
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$(eval NDK_MAX_PLATFORM_LEVEL := $$(call max,$$(NDK_MAX_PLATFORM_LEVEL),$$(level)))\
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)
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$(call ndk_log,Found max platform level: $(NDK_MAX_PLATFORM_LEVEL))
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