[LLVMdev] Building Compiler-RT on Windows

[Daniel Dilts]

While looking closer at the CMake build system, it appears that you cannot
use CMake to cross compile Compiler-RT on Windows.  In
lib\builtins\CMakeLists.txt it has a "if (NOT WIN32)" that should make it
so that it doesn't use the target specific file lists if compiling on
Windows.

On Fri, Feb 20, 2015 at 12:54 PM, Timur Iskhodzhanov <timurrrr at google.com>
wrote:

> [+Saleem]
>
>
> On Fri Feb 20 2015 at 10:31:04 PM Daniel Dilts <diltsman at gmail.com> wrote:
>
>> I am using CMake 3.1.2.
>>
>> On Fri, Feb 20, 2015 at 10:00 AM, Alexey Samsonov <vonosmas at gmail.com>
>> wrote:
>>
>>> It looks like your command fails early in CMake TryCompile tests. Does
>>> (your version of) CMake supports using Clang on Windows at all?
>>>
>>> On Fri, Feb 20, 2015 at 7:02 AM, Daniel Dilts <diltsman at gmail.com>
>>> wrote:
>>>
>>>> Has anyone built Compiler-RT on Windows?  I am attempting to compile it
>>>> for ARM, but I get errors from CMake.  It appears to be trying to pass VC++
>>>> flags to Clang.  I am using a version of Clang built from trunk.
>>>>
>>>>
>>>>
>>>> PS D:\llvm\arm_test\compiler-rt-build> cmake -G Ninja
>>>> -DCMAKE_C_COMPILER=clang.exe -DCMAKE_CXX_COMPILER=clang++.exe -DCM
>>>> AKE_RC_COMPILER=rc.exe -DCMAKE_CXX_FLAGS="" -DCMAKE_C_FLAGS=""
>>>> ..\compiler-rt
>>>> -- The C compiler identification is Clang 3.7.0
>>>> clang.exe: error: no such file or directory: '/nologo'
>>>> clang.exe: error: no such file or directory: '/showIncludes'
>>>> -- The CXX compiler identification is Clang 3.7.0
>>>> clang.exe: error: no such file or directory: '/nologo'
>>>> clang.exe: error: no such file or directory: '/showIncludes'
>>>> -- Check for working C compiler using: Ninja
>>>> -- Check for working C compiler using: Ninja -- broken
>>>> CMake Error at C:/Program Files (x86)/CMake/share/cmake-3.1/
>>>> Modules/CMakeTestCCompiler.cmake:61 (message):
>>>>   The C compiler "d:/llvm/build/Release/bin/clang.exe" is not able to
>>>> compile
>>>>   a simple test program.
>>>>   It fails with the following output:
>>>>    Change Dir: D:/llvm/arm_test/compiler-rt-build/CMakeFiles/CMakeTmp
>>>>
>>>>   Run Build Command:"d:/llvm/ninja/ninja.exe"
>>>> "cmTryCompileExec2171879632"
>>>>   [1/2] Building C object
>>>>   CMakeFiles\cmTryCompileExec2171879632.dir\testCCompiler.c.obj
>>>>   FAILED: d:\llvm\build\Release\bin\clang.exe /nologo /D_DEBUG /MDd
>>>> /Zi /Ob0
>>>>   /Od /RTC1 /showIncludes
>>>>   /FoCMakeFiles\cmTryCompileExec2171879632.dir\testCCompiler.c.obj
>>>>   /FdCMakeFiles\cmTryCompileExec2171879632.dir\ -c testCCompiler.c
>>>>   clang.exe: error: no such file or directory: '/nologo'
>>>>   clang.exe: error: no such file or directory: '/D_DEBUG'
>>>>   clang.exe: error: no such file or directory: '/MDd'
>>>>   clang.exe: error: no such file or directory: '/Zi'
>>>>   clang.exe: error: no such file or directory: '/Ob0'
>>>>   clang.exe: error: no such file or directory: '/Od'
>>>>   clang.exe: error: no such file or directory: '/RTC1'
>>>>   clang.exe: error: no such file or directory: '/showIncludes'
>>>>   clang.exe: error: no such file or directory:
>>>>   '/FoCMakeFiles\cmTryCompileExec2171879632.dir\testCCompiler.c.obj'
>>>>   clang.exe: error: no such file or directory:
>>>>   '/FdCMakeFiles\cmTryCompileExec2171879632.dir\'
>>>>   ninja: build stopped: subcommand failed.
>>>>
>>>>
>>>>   CMake will not be able to correctly generate this project.
>>>> Call Stack (most recent call first):
>>>>   CMakeLists.txt:12 (project)
>>>>
>>>> -- Configuring incomplete, errors occurred!
>>>> See also "D:/llvm/arm_test/compiler-rt-build/CMakeFiles/CMakeOutput.
>>>> log".
>>>> See also "D:/llvm/arm_test/compiler-rt-build/CMakeFiles/CMakeError.
>>>> log".
>>>>
>>>> _______________________________________________
>>>> LLVM Developers mailing list
>>>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>>>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>>>
>>>>
>>>
>>>
>>> --
>>> Alexey Samsonov
>>> vonosmas at gmail.com
>>>
>>
>>
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