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[mxe] Add Windows cross-compiler support.
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Certain Xamarin.Android features require that Mono be built for
Windows, e.g. the [AOT compilers][aot] require a build of mono that
executes on Windows to generate the AOT native libraries.

Unfortunately, building Mono on Windows continues to be a massive
PITA. (Autotools on Windows requires Cygwin/mingw, running shell
scripts on Windows is painfully slow, it's all brittle, etc.)

To work around this pain, we instead build the Mono/Windows binaries
on OS X, via [MXE][mxe], which produces a gcc-based cross-compiler
which generates Windows binaries and is executable from Unix.
This in turn requires that we have MXE, so add a
`_CreateMxeToolchains` target to `android-toolchain.targets` which
will build MXE. The installation prefix for MXE can be overridden via
the new `$(AndroidMxeInstallPrefix)` MSBuild property; it defaults to
`$HOME/android-toolchain/mxe`.

Rework the `$(AndroidSupportedAbis)` MSBuild property so that it
must include the "host" ABI, and add support for a new `host-win64`
value which will use MXE to generate 64-bit Windows binaries for
libmonosgen-2.0.dll and libMonoPosixHelper.dll.

We can't always process `host-$(HostOS)` because of an xbuild bug.
The scenario is that if you want to just build `host-win64`, the
obvious thing to do is:

	cd build-tools/mono-runtimes
	xbuild /p:AndroidSupportedAbis=host-win64

Alas, if `host-$(HostOS)` is always processed, this inexplicably
causes `host-$(HostOS)` to be re-rebuilt, which (1) is a waste of
time, and (2) fails -- inexplicably -- in the `_BuildRuntimes` target
because make(1) thinks that the configure flags have somehow changed,
which currently makes no sense at all. (When can we move to MSBuild?)

Changing `$(AndroidSupportedAbis)` so that `host-$(HostOS)` is
explicitly processed instead of implicitly processed allows working
around the above xbuild bug, as `host-$(HostOS)` won't be implicitly
processed on every build, but only when required.

Additionally, we add a new <Which/> MSBuild task so that we can
determine if a particular process is in `$PATH`. This is useful
because listing requirements within README.md is a road to pain --
e.g. xxd(1) is required to build `src/monodroid` but if it's missing
it'll still *build* but you'll instead get a *linker* failure because
the `monodroid_config` and `monodroid_machine_config` symbols aren't
present. Building MXE requires that even more programs be present
within $PATH, so explicitly check for these so that *useful* error
messages can be generated instead of obscure ones.

Finally, a note about autotools and generating Windows native
libraries: creation of `.dll` files *requires* that an appropriate
objdump be present so it can determine if e.g. `libkernel32.a` is an
import library or an archive. If `x86_64-w64-mingw32.static-objdump`
isn't found -- e.g. because $PATH doesn't contain it -- then no `.dll`
files will be created, and much head scratching will occur.

To rectify this, override the OBJDUMP and DLLTOOL values when invoking
`configure` so that that full paths are used and `$PATH` use is
reduced.  (Who wants `x86_64-w64-mingw32.static-objdump` in `$PATH`?)

[aot]: https://developer.xamarin.com/releases/android/xamarin.android_5/xamarin.android_5.1/#AOT_Support
[mxe]: http://mxe.cc/
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@jonpryor
jonpryor committed Jun 6, 2016
1 parent 877d88d commit 0e9bedb
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4 changes: 4 additions & 0 deletions .gitmodules
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Expand Up @@ -6,3 +6,7 @@
path = external/mono
url = https://github.com/mono/mono.git
branch = mono-4.5.0-branch
[submodule "external/mxe"]
path = external/mxe
url = https://github.com/xamarin/mxe.git
branch = xamarin
1 change: 1 addition & 0 deletions Configuration.Override.props.in
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Expand Up @@ -25,5 +25,6 @@
<!-- These must be FULL PATHS -->
<AndroidToolchainCacheDirectory>$(HOME)\android-archives</AndroidToolchainCacheDirectory>
<AndroidToolchainDirectory>$(HOME)\android-toolchain</AndroidToolchainDirectory>
<AndroidMxeInstallPrefix>$(AndroidToolchainDirectory)\mxe</AndroidMxeInstallPrefix>
</PropertyGroup>
</Project>
8 changes: 6 additions & 2 deletions Configuration.props
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Expand Up @@ -9,19 +9,23 @@
<HostOS Condition=" '$(HostOS)' == '' And '$(OS)' == 'Unix' And Exists ('/Applications') ">Darwin</HostOS>
<HostOS Condition=" '$(HostOS)' == '' And '$(OS)' == 'Unix' ">Linux</HostOS>
<HostCc Condition=" '$(HostCc)' == '' ">clang</HostCc>
<HostCxx Condition=" '$(HostCc)' == '' ">clang++</HostCxx>
<HostCxx Condition=" '$(HostCxx)' == '' ">clang++</HostCxx>
<ManagedRuntime Condition=" '$(ManagedRuntime)' == '' And '$(OS)' != 'Windows_NT' ">mono</ManagedRuntime>
<HOME Condition=" '$(HOME)' == '' ">$(HOMEDRIVE)$(HOMEPATH)</HOME>
<AndroidApiLevel Condition=" '$(AndroidApiLevel)' == '' ">23</AndroidApiLevel>
<AndroidFrameworkVersion Condition=" '$(AndroidFrameworkVersion)' == '' ">v6.0</AndroidFrameworkVersion>
<AndroidToolchainCacheDirectory Condition=" '$(AndroidToolchainCacheDirectory)' == '' ">$(HOME)\android-archives</AndroidToolchainCacheDirectory>
<AndroidToolchainDirectory Condition=" '$(AndroidToolchainDirectory)' == '' ">$(HOME)\android-toolchain</AndroidToolchainDirectory>
<AndroidMxeInstallPrefix Condition=" '$(AndroidMxeInstallPrefix)' == '' ">$(AndroidToolchainDirectory)\mxe</AndroidMxeInstallPrefix>
<AndroidSdkDirectory>$(AndroidToolchainDirectory)\sdk</AndroidSdkDirectory>
<AndroidNdkDirectory>$(AndroidToolchainDirectory)\ndk</AndroidNdkDirectory>
<AndroidSupportedAbis Condition=" '$(AndroidSupportedAbis)' == '' ">armeabi-v7a</AndroidSupportedAbis>
<AndroidSupportedAbis Condition=" '$(AndroidSupportedAbis)' == '' ">host-$(HostOS),armeabi-v7a</AndroidSupportedAbis>
<MonoSourceDirectory>$(MSBuildThisFileDirectory)external\mono</MonoSourceDirectory>
<XamarinAndroidSourcePath>$(MSBuildThisFileDirectory)</XamarinAndroidSourcePath>
</PropertyGroup>
<PropertyGroup>
<AndroidMxeFullPath>$([System.IO.Path]::GetFullPath ('$(AndroidMxeInstallPrefix)'))</AndroidMxeFullPath>
</PropertyGroup>
<!--
"Fixup" $(AndroidSupportedAbis) so that Condition attributes elsewhere
can use `,ABI-NAME,`, to avoid substring mismatches.
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15 changes: 14 additions & 1 deletion README.md
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Expand Up @@ -41,7 +41,20 @@ Overridable MSBuild properties include:
* `x86`
* `x86_64`

The default value is `armeabi-v7a`.
Addtionally there are a set of "host" values. The "host ABI" is used
to build mono for the *currently executing operating system*, in
particular to build the base class libraries such as `mscorlib.dll`.
There can also be support for cross-compiling mono for a different
host, e.g. to build Windows `libmonosgen-2.0.dll` from OS X.
Supported host values include:

* `host-Darwin`
* `host-Linux`
* `host-win64`: Cross-compile Windows 64-bit binaries from Unix.

The default value is `host-$(HostOS),armeabi-v7a`, where `$(HostOS)`
is based on probing various environment variables and filesystem locations.
On OS X, the default would be `host-Darwin,armeabi-v7a`.

* `$(AndroidToolchainCacheDirectory)`: The directory to cache the downloaded
Android NDK and SDK files. This value defaults to
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2 changes: 2 additions & 0 deletions build-tools/android-toolchain/android-toolchain.mdproj
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Expand Up @@ -18,9 +18,11 @@
<BuildDependsOn>
ResolveReferences;
_CopyBootstrapTasksAssembly;
_CheckForRequiredPrograms;
_DownloadItems;
_UnzipFiles;
_CreateNdkToolchains;
_CreateMxeToolchains;
</BuildDependsOn>
</PropertyGroup>
<ItemGroup>
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38 changes: 38 additions & 0 deletions build-tools/android-toolchain/android-toolchain.projitems
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Expand Up @@ -61,4 +61,42 @@
<Arch>x86_64</Arch>
</_NdkToolchain>
</ItemGroup>
<ItemGroup>
<_RequiredProgram Include="$(ManagedRuntime)" Condition=" '$(ManagedRuntime)' != '' " />
<_RequiredProgram Include="$(HostCc)" />
<_RequiredProgram Include="$(HostCxx)" />
<_RequiredProgram Include="7za" Condition="$(AndroidSupportedAbisForConditionalChecks.Contains (',host-win64,'))">
<Homebrew>p7zip</Homebrew>
</_RequiredProgram>
<_RequiredProgram Include="autoconf" />
<_RequiredProgram Include="automake" />
<_RequiredProgram Include="cmake" Condition="$(AndroidSupportedAbisForConditionalChecks.Contains (',host-win64,'))" />
<_RequiredProgram Include="gdk-pixbuf-csource" Condition="$(AndroidSupportedAbisForConditionalChecks.Contains (',host-win64,'))">
<Homebrew>gdk-pixbuf</Homebrew>
</_RequiredProgram>
<_RequiredProgram Include="gettext" Condition="$(AndroidSupportedAbisForConditionalChecks.Contains (',host-win64,'))" />
<_RequiredProgram Include="glibtool" Condition="$(AndroidSupportedAbisForConditionalChecks.Contains (',host-win64,'))">
<Homebrew>libtool</Homebrew>
</_RequiredProgram>
<_RequiredProgram Include="gsed" Condition="$(AndroidSupportedAbisForConditionalChecks.Contains (',host-win64,'))">
<Homebrew>gnu-sed</Homebrew>
</_RequiredProgram>
<_RequiredProgram Include="intltoolize" Condition="$(AndroidSupportedAbisForConditionalChecks.Contains (',host-win64,'))">
<Homebrew>intltool</Homebrew>
</_RequiredProgram>
<_RequiredProgram Include="make" />
<_RequiredProgram Include="pkg-config" Condition="$(AndroidSupportedAbisForConditionalChecks.Contains (',host-win64,'))">
<Homebrew>pkg-config</Homebrew>
</_RequiredProgram>
<_RequiredProgram Include="ruby" Condition="$(AndroidSupportedAbisForConditionalChecks.Contains (',host-win64,'))" />
<_RequiredProgram Include="scons" Condition="$(AndroidSupportedAbisForConditionalChecks.Contains (',host-win64,'))">
<Homebrew>scons</Homebrew>
</_RequiredProgram>
<_RequiredProgram Include="wget" Condition="$(AndroidSupportedAbisForConditionalChecks.Contains (',host-win64,'))">
<Homebrew>wget</Homebrew>
</_RequiredProgram>
<_RequiredProgram Include="xz" Condition="$(AndroidSupportedAbisForConditionalChecks.Contains (',host-win64,'))">
<Homebrew>xz</Homebrew>
</_RequiredProgram>
</ItemGroup>
</Project>
46 changes: 46 additions & 0 deletions build-tools/android-toolchain/android-toolchain.targets
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Expand Up @@ -12,6 +12,22 @@
<UsingTask AssemblyFile="$(OutputPath)\Xamarin.Android.Tools.BootstrapTasks.dll" TaskName="Xamarin.Android.Tools.BootstrapTasks.CreateTemporaryDirectory" />
<UsingTask AssemblyFile="$(OutputPath)\Xamarin.Android.Tools.BootstrapTasks.dll" TaskName="Xamarin.Android.Tools.BootstrapTasks.DownloadUri" />
<UsingTask AssemblyFile="$(OutputPath)\Xamarin.Android.Tools.BootstrapTasks.dll" TaskName="Xamarin.Android.Tools.BootstrapTasks.UnzipDirectoryChildren" />
<UsingTask AssemblyFile="$(OutputPath)\Xamarin.Android.Tools.BootstrapTasks.dll" TaskName="Xamarin.Android.Tools.BootstrapTasks.Which" />
<Target Name="_CheckForRequiredPrograms">
<Which Program="%(_RequiredProgram.Identity)" Required="True" />
<OnError ExecuteTargets="_PrintRequiredPrograms" />
</Target>
<Target Name="_PrintRequiredPrograms">
<Error
ContinueOnError="True"
Text="The following programs are required: @(_RequiredProgram->'%(Identity)', ' ')"
/>
<Error
Condition=" '$(HostOS)' == 'Darwin' "
ContinueOnError="True"
Text="Please try running: brew install @(_RequiredProgram->'%(Homebrew)', ' ')`"
/>
</Target>
<Target Name="_DetermineItems">
<CreateItem
Include="@(AndroidSdkItem)"
Expand Down Expand Up @@ -95,4 +111,34 @@
Importance="High"
/>
</Target>
<Target Name="_SetMxeToolchainMakefileTimeToLastCommitTimestamp"
Condition="$(AndroidSupportedAbisForConditionalChecks.Contains (',host-win64,')) Or $(AndroidSupportedAbisForConditionalChecks.Contains (',host-win32,'))">
<Exec
Command="touch -m -t `git log -1 --format=%25cd --date=format-local:%25Y%25m%25d%25H%25M.%25S` Makefile"
WorkingDirectory="..\..\external\mxe"
/>
</Target>
<Target Name="_CreateMxeW32Toolchain"
DependsOnTargets="_SetMxeToolchainMakefileTimeToLastCommitTimestamp"
Condition="$(AndroidSupportedAbisForConditionalChecks.Contains (',host-win64,'))"
Inputs="..\..\external\mxe\Makefile"
Outputs="$(AndroidMxeFullPath)\bin\i686-w64-mingw32.static-gcc">
<Exec
Command="make $(MAKEFLAGS) MXE_TARGETS=&quot;i686-w64-mingw32.static&quot; gcc PREFIX=&quot;$(AndroidMxeFullPath)&quot;"
WorkingDirectory="..\..\external\mxe"
/>
</Target>
<Target Name="_CreateMxeW64Toolchain"
DependsOnTargets="_SetMxeToolchainMakefileTimeToLastCommitTimestamp"
Condition="$(AndroidSupportedAbisForConditionalChecks.Contains (',host-win64,'))"
Inputs="..\..\external\mxe\Makefile"
Outputs="$(AndroidMxeFullPath)\bin\x86_64-w64-mingw32.static-gcc">
<Exec
Command="make $(MAKEFLAGS) MXE_TARGETS=&quot;x86_64-w64-mingw32.static&quot; gcc PREFIX=&quot;$(AndroidMxeFullPath)&quot;"
WorkingDirectory="..\..\external\mxe"
/>
</Target>
<Target Name="_CreateMxeToolchains"
DependsOnTargets="_CreateMxeW32Toolchain;_CreateMxeW64Toolchain">
</Target>
</Project>
30 changes: 28 additions & 2 deletions build-tools/mono-runtimes/mono-runtimes.projitems
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Expand Up @@ -12,6 +12,7 @@
<CxxCpp>$(_ArmCxxCpp) $(_ArmCppFlags)</CxxCpp>
<Ld>$(_ArmLd)</Ld>
<LdFlags>$(_ArmLdFlags)</LdFlags>
<Objdump>$(_ArmObjdump)</Objdump>
<RanLib>$(_ArmRanLib)</RanLib>
<Strip>$(_ArmStrip)</Strip>
<ConfigureFlags>--host=armv5-linux-androideabi $(_TargetConfigureFlags)</ConfigureFlags>
Expand All @@ -31,6 +32,7 @@
<CxxCpp>$(_ArmCxxCpp) $(_ArmCppFlags)</CxxCpp>
<Ld>$(_ArmLd)</Ld>
<LdFlags>$(_ArmLdFlags)</LdFlags>
<Objdump>$(_ArmObjdump)</Objdump>
<RanLib>$(_ArmRanLib)</RanLib>
<Strip>$(_ArmStrip)</Strip>
<ConfigureFlags>--host=armv5-linux-androideabi $(_TargetConfigureFlags)</ConfigureFlags>
Expand All @@ -50,6 +52,7 @@
<CxxCpp>$(_Arm64CxxCpp) $(_Arm64CppFlags)</CxxCpp>
<Ld>$(_Arm64Ld)</Ld>
<LdFlags>$(_Arm64LdFlags)</LdFlags>
<Objdump>$(_Arm64Objdump)</Objdump>
<RanLib>$(_Arm64RanLib)</RanLib>
<Strip>$(_Arm64Strip)</Strip>
<ConfigureFlags>--host=aarch64-linux-android $(_TargetConfigureFlags)</ConfigureFlags>
Expand All @@ -69,6 +72,7 @@
<CxxCpp>$(_X86CxxCpp) $(_X86CppFlags)</CxxCpp>
<Ld>$(_X86Ld)</Ld>
<LdFlags>$(_X86LdFlags)</LdFlags>
<Objdump>$(_X86Objdump)</Objdump>
<RanLib>$(_X86RanLib)</RanLib>
<Strip>$(_X86Strip)</Strip>
<ConfigureFlags>--host=i686-linux-android $(_TargetConfigureFlags)</ConfigureFlags>
Expand All @@ -89,14 +93,36 @@
<Ld>$(_X86_64Ld)</Ld>
<LdFlags>$(_X86_64LdFlags)</LdFlags>
<RanLib>$(_X86_64RanLib)</RanLib>
<Objdump>$(_X86_64Objdump)</Objdump>
<Strip>$(_X86_64Strip)</Strip>
<ConfigureFlags>--host=x86_64-linux-android $(_TargetConfigureFlags)</ConfigureFlags>
<OutputRuntimeFilename>libmonosgen-2.0</OutputRuntimeFilename>
<NativeLibraryExtension>so</NativeLibraryExtension>
<OutputProfilerFilename>libmono-profiler-log</OutputProfilerFilename>
<OutputMonoPosixHelperFilename>libMonoPosixHelper</OutputMonoPosixHelperFilename>
</_MonoRuntime>
<_MonoRuntime Include="host-Darwin" Condition=" '$(HostOS)' == 'Darwin' ">
<_MonoRuntime Include="host-Win64" Condition="$(AndroidSupportedAbisForConditionalChecks.Contains (',host-win64,'))">
<Ar>$(AndroidMxeFullPath)\bin\x86_64-w64-mingw32.static-ar</Ar>
<As>$(AndroidMxeFullPath)\bin\x86_64-w64-mingw32.static-as</As>
<Cc>$(AndroidMxeFullPath)\bin\x86_64-w64-mingw32.static-gcc</Cc>
<Cpp></Cpp>
<CFlags>$(_HostWin64CFlags)</CFlags>
<Cxx>$(AndroidMxeFullPath)\bin\x86_64-w64-mingw32.static-g++</Cxx>
<CxxFlags>$(_HostWin64CFlags)</CxxFlags>
<CxxCpp></CxxCpp>
<DllTool>$(AndroidMxeFullPath)\bin\x86_64-w64-mingw32.static-dlltool</DllTool>
<Ld>$(AndroidMxeFullPath)\bin\x86_64-w64-mingw32.static-ld</Ld>
<LdFlags></LdFlags>
<Objdump>$(AndroidMxeFullPath)\bin\x86_64-w64-mingw32.static-objdump</Objdump>
<RanLib>$(AndroidMxeFullPath)\bin\x86_64-w64-mingw32.static-ranlib</RanLib>
<Strip>$(AndroidMxeFullPath)\bin\x86_64-w64-mingw32.static-strip</Strip>
<ConfigureFlags>PATH="$PATH:$(AndroidMxeFullPath)\bin" --host=x86_64-w64-mingw32.static --target=x86_64-w64-mingw32.static --disable-boehm --enable-mcs-build=no --enable-nls=no --enable-maintainer-mode --with-monodroid --disable-llvm</ConfigureFlags>
<NativeLibraryExtension>dll</NativeLibraryExtension>
<OutputRuntimeFilename>libmonosgen-2.0</OutputRuntimeFilename>
<OutputProfilerFilename></OutputProfilerFilename>
<OutputMonoPosixHelperFilename>libMonoPosixHelper</OutputMonoPosixHelperFilename>
</_MonoRuntime>
<_MonoRuntime Include="host-Darwin" Condition="$(AndroidSupportedAbisForConditionalChecks.Contains (',host-Darwin,'))">
<Ar>ar</Ar>
<As>as</As>
<Cc>$(HostCc)</Cc>
Expand All @@ -114,7 +140,7 @@
<OutputProfilerFilename>libmono-profiler-log</OutputProfilerFilename>
<OutputMonoPosixHelperFilename>libMonoPosixHelper</OutputMonoPosixHelperFilename>
</_MonoRuntime>
<_MonoRuntime Include="host-Linux" Condition=" '$(HostOS)' == 'Linux' ">
<_MonoRuntime Include="host-Linux" Condition="$(AndroidSupportedAbisForConditionalChecks.Contains (',host-Linux,'))">
<Ar>ar</Ar>
<As>as</As>
<Cc>$(HostCc)</Cc>
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9 changes: 9 additions & 0 deletions build-tools/mono-runtimes/mono-runtimes.props
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Expand Up @@ -3,6 +3,8 @@
<PropertyGroup>
<_CommonCFlags Condition=" '$(Configuration)' == 'Debug' ">-ggdb3 -O0 -fno-omit-frame-pointer</_CommonCFlags>
<_CommonCFlags Condition=" '$(Configuration)' == 'Release' ">-g -O2</_CommonCFlags>
<_HostWinCFlags Condition=" '$(Configuration)' == 'Debug' ">-ggdb3 -O0 -DXAMARIN_PRODUCT_VERSION=0</_HostWinCFlags>
<_HostWinCFlags Condition=" '$(Configuration)' == 'Release' ">-g -O2 -DXAMARIN_PRODUCT_VERSION=0</_HostWinCFlags>
<_CommonConfigureFlags>--without-ikvm-native --enable-maintainer-mode --with-profile2=no --with-profile4=no --with-profile4_5=no --with-monodroid --enable-nls=no --with-sigaltstack=yes --with-tls=pthread mono_cv_uscore=yes</_CommonConfigureFlags>
<_TargetConfigureFlags>$(_CommonConfigureFlags) --enable-minimal=ssa,portability,attach,verifier,full_messages,sgen_remset,sgen_marksweep_par,sgen_marksweep_fixed,sgen_marksweep_fixed_par,sgen_copying,logging,security,shared_handles --disable-mcs-build --disable-executables --disable-iconv</_TargetConfigureFlags>
<_SecurityCFlags>-Wl,-z,now -Wl,-z,relro -Wl,-z,noexecstack -fstack-protector</_SecurityCFlags>
Expand All @@ -23,6 +25,7 @@
<_ArmCxxCpp>$(AndroidToolchainDirectory)\toolchains\arm-linux-androideabi-clang\bin\arm-linux-androideabi-cpp</_ArmCxxCpp>
<_ArmLd>$(AndroidToolchainDirectory)\toolchains\arm-linux-androideabi-clang\bin\arm-linux-androideabi-ld</_ArmLd>
<_ArmLdFlags>$(_TargetLdFlags) -Wl,--fix-cortex-a8 -Wl,-rpath-link=$(_ArmNdkPlatformPath)\arch-arm\usr\lib,-dynamic-linker=/system/bin/linker -L$(_ArmNdkPlatformPath)\arch-arm\usr\lib</_ArmLdFlags>
<_ArmObjdump>$(AndroidToolchainDirectory)\toolchains\arm-linux-androideabi-clang\bin\arm-linux-androideabi-objdump</_ArmObjdump>
<_ArmRanLib>$(AndroidToolchainDirectory)\toolchains\arm-linux-androideabi-clang\bin\arm-linux-androideabi-ranlib</_ArmRanLib>
<_ArmStrip>$(AndroidToolchainDirectory)\toolchains\arm-linux-androideabi-clang\bin\arm-linux-androideabi-strip</_ArmStrip>
</PropertyGroup>
Expand All @@ -39,6 +42,7 @@
<_Arm64CxxCpp>$(AndroidToolchainDirectory)\toolchains\aarch64-linux-android-clang\bin\aarch64-linux-android-cpp</_Arm64CxxCpp>
<_Arm64Ld>$(AndroidToolchainDirectory)\toolchains\aarch64-linux-android-clang\bin\aarch64-linux-android-ld</_Arm64Ld>
<_Arm64LdFlags>$(_TargetLdFlags) -Wl,-rpath-link=$(_Arm64NdkPlatformPath)\arch-arm64\usr\lib,-dynamic-linker=/system/bin/linker -L$(_Arm64NdkPlatformPath)\arch-arm64\usr\lib</_Arm64LdFlags>
<_Arm64Objdump>$(AndroidToolchainDirectory)\toolchains\aarch64-linux-android-clang\bin\aarch64-linux-android-objdump</_Arm64Objdump>
<_Arm64RanLib>$(AndroidToolchainDirectory)\toolchains\aarch64-linux-android-clang\bin\aarch64-linux-android-ranlib</_Arm64RanLib>
<_Arm64Strip>$(AndroidToolchainDirectory)\toolchains\aarch64-linux-android-clang\bin\aarch64-linux-android-strip</_Arm64Strip>
</PropertyGroup>
Expand All @@ -55,6 +59,7 @@
<_X86CxxCpp>$(AndroidToolchainDirectory)\toolchains\x86-clang\bin\i686-linux-android-cpp</_X86CxxCpp>
<_X86Ld>$(AndroidToolchainDirectory)\toolchains\x86-clang\bin\i686-linux-android-ld</_X86Ld>
<_X86LdFlags>$(_TargetLdFlags) -Wl,-rpath-link=$(_X86NdkPlatformPath)\arch-x86\usr\lib,-dynamic-linker=/system/bin/linker -L$(_X86NdkPlatformPath)\arch-x86\usr\lib</_X86LdFlags>
<_X86Objdump>$(AndroidToolchainDirectory)\toolchains\x86-clang\bin\i686-linux-android-objdump</_X86Objdump>
<_X86RanLib>$(AndroidToolchainDirectory)\toolchains\x86-clang\bin\i686-linux-android-ranlib</_X86RanLib>
<_X86Strip>$(AndroidToolchainDirectory)\toolchains\x86-clang\bin\i686-linux-android-strip</_X86Strip>
</PropertyGroup>
Expand All @@ -71,7 +76,11 @@
<_X86_64CxxCpp>$(AndroidToolchainDirectory)\toolchains\x86_64-clang\bin\x86_64-linux-android-cpp</_X86_64CxxCpp>
<_X86_64Ld>$(AndroidToolchainDirectory)\toolchains\x86_64-clang\bin\x86_64-linux-android-ld</_X86_64Ld>
<_X86_64LdFlags>$(_TargetLdFlags) -Wl,-rpath-link=$(_X86_64NdkPlatformPath)\arch-x86_64\usr\lib,-dynamic-linker=/system/bin/linker -L$(_X86_64NdkPlatformPath)\arch-x86_64\usr\lib</_X86_64LdFlags>
<_X86_64Objdump>$(AndroidToolchainDirectory)\toolchains\x86_64-clang\bin\x86_64-linux-android-objdump</_X86_64Objdump>
<_X86_64RanLib>$(AndroidToolchainDirectory)\toolchains\x86_64-clang\bin\x86_64-linux-android-ranlib</_X86_64RanLib>
<_X86_64Strip>$(AndroidToolchainDirectory)\toolchains\x86_64-clang\bin\x86_64-linux-android-strip</_X86_64Strip>
</PropertyGroup>
<PropertyGroup>
<_HostWin64CFlags>$(_HostWinCFlags)</_HostWin64CFlags>
</PropertyGroup>
</Project>
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