[llvm-dev] Help with build

[Michael Kruse via llvm-dev]

This looks like cmake starts processing with a wrong top-level
CMakeLists.txt (llvm\docs\CMakeLists.txt). It should be <your llvm-project
checkout>\llvm\CMakeLists.txt. For instance:

C:\> cmake -S  <your llvm-project checkout>\llvm -B C:/LLVM/Build

Michael


Am Do., 30. Juli 2020 um 08:34 Uhr schrieb Paul C. Anagnostopoulos via
llvm-dev <llvm-dev at lists.llvm.org>:

> I need some help getting the LLVM build to work. If this is not the right
> place to ask, please let me know. I set MSE and Malwarebytes so they ignore
> the build directory tree and don't complain about a.exe. I also ran this
> CMake disabling both of them, just in case that mattered; it didn't.
>
> Here are the outputs from CMake and the contents of CMakeError.log. Any
> help would be appreciated.
>
> Note: When I run a.exe by itself, the return status is 390.
>
> ---------------------------------
> CMake Warning (dev) in CMakeLists.txt:
>   No project() command is present.  The top-level CMakeLists.txt file must
>   contain a literal, direct call to the project() command.  Add a line of
>   code such as
>
>     project(ProjectName)
>
>   near the top of the file, but after cmake_minimum_required().
>
>   CMake is pretending there is a "project(Project)" command on the first
>   line.
> This warning is for project developers.  Use -Wno-dev to suppress it.
>
> -- The C compiler identification is GNU 9.2.0
> -- The CXX compiler identification is GNU 9.2.0
> -- Detecting C compiler ABI info
> -- Detecting C compiler ABI info - done
> -- Check for working C compiler: C:/MinGW/bin/gcc.exe - skipped
> -- Detecting C compile features
> -- Detecting C compile features - done
> -- Detecting CXX compiler ABI info
> -- Detecting CXX compiler ABI info - done
> -- Check for working CXX compiler: C:/MinGW/bin/c++.exe - skipped
> -- Detecting CXX compile features
> -- Detecting CXX compile features - done
> CMake Error at CMakeLists.txt:106 (include):
>   include could not find load file:
>
>     AddSphinxTarget
>
>
> CMake Warning (dev) in CMakeLists.txt:
>   No cmake_minimum_required command is present.  A line of code such as
>
>     cmake_minimum_required(VERSION 3.18)
>
>   should be added at the top of the file.  The version specified may be
> lower
>   if you wish to support older CMake versions for this project.  For more
>   information run "cmake --help-policy CMP0000".
> This warning is for project developers.  Use -Wno-dev to suppress it.
>
> -- Configuring incomplete, errors occurred!
> See also "C:/LLVM/Build/CMakeFiles/CMakeOutput.log".
> See also "C:/LLVM/Build/CMakeFiles/CMakeError.log".
> --------------------------------------
> The C compiler identification could not be found in
> "C:/LLVM/Build/CMakeFiles/3.18.0/CompilerIdC/a.exe"
> ---------------------------------------
>
> In spite of that error, here is what appears in the CMake cache:
>
> ------------------------------------
> //C compiler
> CMAKE_C_COMPILER:FILEPATH=C:/MinGW/bin/gcc.exe
>
> //A wrapper around 'ar' adding the appropriate '--plugin' option
> // for the GCC compiler
> CMAKE_C_COMPILER_AR:FILEPATH=C:/MinGW/bin/gcc-ar.exe
>
> //A wrapper around 'ranlib' adding the appropriate '--plugin' option
> // for the GCC compiler
> CMAKE_C_COMPILER_RANLIB:FILEPATH=C:/MinGW/bin/gcc-ranlib.exe
>
> //Flags used by the C compiler during all build types.
> CMAKE_C_FLAGS:STRING=
>
> //Flags used by the C compiler during DEBUG builds.
> CMAKE_C_FLAGS_DEBUG:STRING=-g
>
> //Flags used by the C compiler during MINSIZEREL builds.
> CMAKE_C_FLAGS_MINSIZEREL:STRING=-Os -DNDEBUG
>
> //Flags used by the C compiler during RELEASE builds.
> CMAKE_C_FLAGS_RELEASE:STRING=-O3 -DNDEBUG
>
> //Flags used by the C compiler during RELWITHDEBINFO builds.
> CMAKE_C_FLAGS_RELWITHDEBINFO:STRING=-O2 -g -DNDEBUG
> ------------------------------------
>
> _______________________________________________
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> llvm-dev at lists.llvm.org
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>
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