llvm dev - Mar 2015 - [LLVMdev] How to Cross Compile libcompiler_rt Static Library?

2015-03-29 3:33 GMT-05:00 Ed Schouten <ed at 80386.nl>:
> I am cross-compiling compiler-rt for my specific use-case. That said,
> I'm cross-compiling from x86-64 to x86-64, but for a different ABI.
> This is what I use:
>
>
>
https://github.com/NuxiNL/cloudlibc/wiki/Building-runtime-libraries#user-content-compiler-rt
>
> -DCMAKE_CROSSCOMPILING=True
>
> As you can see, I'm using CMake. Works pretty well so far. Hopefully
> something like this will work for you as well?
>
I tried "cmake ../compiler-rt -DCMAKE_C_COMPILER=clang
-DCMAKE_CXX_COMPILER=clang++  -DLLVM_NATIVE_ARCH=ARM
-DLLVM_TARGETS_TO_BUILD=ARM -DTARGET_TRIPLE=armv-none-linux-gnueabi
 -DCMAKE_CROSSCOMPILING=True". It will still build X86_64 version.

I also tried "cmake ../compiler-rt
-DCMAKE_C_COMPILER=/usr/local/arm-2009q3/bin/arm-none-linux-gnueabi-gcc
-DCMAKE_CXX_COMPILER=/usr/local/arm-2009q3/bin/arm-none-linux-gnueabi-g++
 -DLLVM_NATIVE_ARCH=ARM -DLLVM_TARGETS_TO_BUILD=ARM
-DTARGET_TRIPLE=armv-none-linux-gnueabi  -DCMAKE_CROSSCOMPILING=True
". the configure process generate errors:

CMake Error at cmake/config-ix.cmake:111 (message):
Cannot compile for x86_64:

It seems that the cmake only works for X86 target?

Thanks,
Chao
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I asked about this same question in the past (month or three ago).  It is
not possible to cross compile compiler-rt on Windows.  If you want to cross
compile you should use the make build system, not the CMake build system.

On Sun, Mar 29, 2015 at 9:26 AM, Chao Yan <yanchao2012 at gmail.com>
wrote:
>
> 2015-03-29 3:33 GMT-05:00 Ed Schouten <ed at 80386.nl>:
>
>> I am cross-compiling compiler-rt for my specific use-case. That said,
>> I'm cross-compiling from x86-64 to x86-64, but for a different ABI.
>> This is what I use:
>>
>>
>>
https://github.com/NuxiNL/cloudlibc/wiki/Building-runtime-libraries#user-content-compiler-rt
>>
>> -DCMAKE_CROSSCOMPILING=True
>>
>> As you can see, I'm using CMake. Works pretty well so far.
Hopefully
>> something like this will work for you as well?
>>
>
> I tried "cmake ../compiler-rt -DCMAKE_C_COMPILER=clang
> -DCMAKE_CXX_COMPILER=clang++  -DLLVM_NATIVE_ARCH=ARM
> -DLLVM_TARGETS_TO_BUILD=ARM -DTARGET_TRIPLE=armv-none-linux-gnueabi
>  -DCMAKE_CROSSCOMPILING=True". It will still build X86_64 version.
>
> I also tried "cmake ../compiler-rt
> -DCMAKE_C_COMPILER=/usr/local/arm-2009q3/bin/arm-none-linux-gnueabi-gcc
> -DCMAKE_CXX_COMPILER=/usr/local/arm-2009q3/bin/arm-none-linux-gnueabi-g++
>  -DLLVM_NATIVE_ARCH=ARM -DLLVM_TARGETS_TO_BUILD=ARM
> -DTARGET_TRIPLE=armv-none-linux-gnueabi  -DCMAKE_CROSSCOMPILING=True
> ". the configure process generate errors:
>
> CMake Error at cmake/config-ix.cmake:111 (message):
> Cannot compile for x86_64:
>
> It seems that the cmake only works for X86 target?
>
> Thanks,
> Chao
>
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
>
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I need to correct myself.  It is possible to cross compile it on Windows,
but not using the provided build systems.

On Sun, Mar 29, 2015 at 12:52 PM, Daniel Dilts <diltsman at gmail.com>
wrote:
> I asked about this same question in the past (month or three ago).  It is
> not possible to cross compile compiler-rt on Windows.  If you want to cross
> compile you should use the make build system, not the CMake build system.
>
> On Sun, Mar 29, 2015 at 9:26 AM, Chao Yan <yanchao2012 at gmail.com>
wrote:
>
>>
>> 2015-03-29 3:33 GMT-05:00 Ed Schouten <ed at 80386.nl>:
>>
>>> I am cross-compiling compiler-rt for my specific use-case. That
said,
>>> I'm cross-compiling from x86-64 to x86-64, but for a different
ABI.
>>> This is what I use:
>>>
>>>
>>>
https://github.com/NuxiNL/cloudlibc/wiki/Building-runtime-libraries#user-content-compiler-rt
>>>
>>> -DCMAKE_CROSSCOMPILING=True
>>>
>>> As you can see, I'm using CMake. Works pretty well so far.
Hopefully
>>> something like this will work for you as well?
>>>
>>
>> I tried "cmake ../compiler-rt -DCMAKE_C_COMPILER=clang
>> -DCMAKE_CXX_COMPILER=clang++  -DLLVM_NATIVE_ARCH=ARM
>> -DLLVM_TARGETS_TO_BUILD=ARM -DTARGET_TRIPLE=armv-none-linux-gnueabi
>>  -DCMAKE_CROSSCOMPILING=True". It will still build X86_64 version.
>>
>> I also tried "cmake ../compiler-rt
>> -DCMAKE_C_COMPILER=/usr/local/arm-2009q3/bin/arm-none-linux-gnueabi-gcc
>>
-DCMAKE_CXX_COMPILER=/usr/local/arm-2009q3/bin/arm-none-linux-gnueabi-g++
>>  -DLLVM_NATIVE_ARCH=ARM -DLLVM_TARGETS_TO_BUILD=ARM
>> -DTARGET_TRIPLE=armv-none-linux-gnueabi  -DCMAKE_CROSSCOMPILING=True
>> ". the configure process generate errors:
>>
>> CMake Error at cmake/config-ix.cmake:111 (message):
>> Cannot compile for x86_64:
>>
>> It seems that the cmake only works for X86 target?
>>
>> Thanks,
>> Chao
>>
>> _______________________________________________
>> LLVM Developers mailing list
>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>
>>
>
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