[PATCH] D136906: [Clang][LoongArch] Implement __builtin_loongarch_dbar builtin

[Gong LingQin via Phabricator via cfe-commits]

gonglingqin added a comment.

In D136906#3940289 <https://reviews.llvm.org/D136906#3940289>, @WowbaggersLiquidLunch wrote:

> Hi, this seems to be causing some problems when generating Xcode project.
>
> When I try to generate the Xcode project with the following command:
>
>   cmake -G "Xcode" -DCMAKE_BUILD_TYPE=Debug -DLLVM_TARGETS_TO_BUILD="X86" -DLLVM_ENABLE_PROJECTS="clang" -DLLVM_OPTIMIZED_TABLEGEN=ON -DLLVM_ENABLE_IDE=ON -DLLVM_CCACHE_BUILD=ON ../../llvm
>
> I get the following error:
>
>> CMake Error in /path/to/llvm-project/clang/lib/Headers/CMakeLists.txt:
>>
>>   The custom command generating
>>   
>>     /path/to/llvm-project/build/Xcode-Debug/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)/lib/clang/16/include/larchintrin.h
>>   
>>   is attached to multiple targets:
>>   
>>     clang-resource-headers
>>     loongarch-resource-headers
>>   
>>   but none of these is a common dependency of the other(s).  This is not
>>   allowed by the Xcode "new build system".
>>
>> CMake Error in /path/to/llvm-project/third-party/benchmark/CMakeLists.txt:
>>
>>   The custom command generating
>>   
>>     /path/to/llvm-project/build/Xcode-Debug/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)/lib/clang/16/include/larchintrin.h
>>   
>>   is attached to multiple targets:
>>   
>>     clang-resource-headers
>>     loongarch-resource-headers
>>   
>>   but none of these is a common dependency of the other(s).  This is not
>>   allowed by the Xcode "new build system".

Thank you for your input. Correct me if I'm wrong,  when I create a new build directory and execute the following command:

  cmake -G "Xcode" -DCMAKE_BUILD_TYPE=Debug -DLLVM_TARGETS_TO_BUILD="X86" -DLLVM_ENABLE_PROJECTS="clang" -DLLVM_OPTIMIZED_TABLEGEN=ON -DLLVM_ENABLE_IDE=ON -DLLVM_CCACHE_BUILD=ON ../../llvm

I get the following error:

  CMake Error: Could not create named generator Xcode
  
  Generators
    Unix Makefiles               = Generates standard UNIX makefiles.
    Ninja                        = Generates build.ninja files.
    Watcom WMake                 = Generates Watcom WMake makefiles.
    CodeBlocks - Ninja           = Generates CodeBlocks project files.
    CodeBlocks - Unix Makefiles  = Generates CodeBlocks project files.
    CodeLite - Ninja             = Generates CodeLite project files.
    CodeLite - Unix Makefiles    = Generates CodeLite project files.
    Sublime Text 2 - Ninja       = Generates Sublime Text 2 project files.
    Sublime Text 2 - Unix Makefiles
                                 = Generates Sublime Text 2 project files.
    Kate - Ninja                 = Generates Kate project files.
    Kate - Unix Makefiles        = Generates Kate project files.
    Eclipse CDT4 - Ninja         = Generates Eclipse CDT 4.0 project files.
    Eclipse CDT4 - Unix Makefiles= Generates Eclipse CDT 4.0 project files.

But when I change `Xcode` to `Ninja`, no error output is generated.
Do you have any suggestions for reproducing the bugs you mentioned?


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https://reviews.llvm.org/D136906