Hey Adrian, Config.h gets generated by expanding the corresponding CMake variables. If you look at LLDBConfig.cmake, you can see that LLDB_PYTHON_HOME is computed from PYTHON_EXECUTABLE. The problem appears that somehow CMake ignored your specified PYTHON_HOME and decided to pick a different Python. I'm not sure why though, because I use a similar CMake invocation on Windows.
> cmake ..\llvm-project\llvm -G Ninja -DCMAKE_BUILD_TYPE=RelWithDebInfo -DLLVM_ENABLE_PROJECTS="llvm;clang;lldb;lld" -DLLVM_ENABLE_ASSERTIONS=OFF -DLLVM_ENABLE_ZLIB=FALSE -DLLDB_ENABLE_PYTHON=TRUE -DPYTHON_HOME="C:/Program Files/Python36/" According to FindPython3 ( https://cmake.org/cmake/help/v3.12/module/FindPython3.html), you can set Python3_ROOT_DIR as a hint. Can you give that a try? If that works we should populate that variable from PYTHON_HOME in FindPythonInterpAndLibs.cmake. Cheers, Jonas On Thu, Feb 27, 2020 at 10:10 AM Adrian McCarthy via lldb-dev < lldb-dev@lists.llvm.org> wrote: > Is there documentation on how lldb\include\lldb\host\config.h is > generated? I'm again having the problem of the config trying to point to > the wrong Python installation. > > When I run cmake, I explicitly point PYTHON_HOME to C:\Python36 like this: > > cmake -GNinja -DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN=ON > -DCMAKE_BUILD_TYPE=Debug -DLLDB_TEST_DEBUG_TEST_CRASHES=1 > -DPYTHON_HOME=C:\Python36 > -DLLDB_TEST_COMPILER=D:\src\llvm\build\ninja\bin\clang.exe > ..\..\llvm-project\llvm -DLLVM_ENABLE_ZLIB=OFF > -DLLVM_ENABLE_PROJECTS="clang;lld;lldb" > > But the generated Config.h contains: > > #define LLDB_PYTHON_HOME "C:/Program Files (x86)/Microsoft Visual > Studio/Shared/Python37_64" > > > And the mismatch causes my build to fail because it goes looking for > python37_d.dll, which is apparently not part of the Microsoft distribution. > _______________________________________________ > lldb-dev mailing list > lldb-dev@lists.llvm.org > https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-dev >
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