<div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr">Hey Adrian,<div><br></div><div>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. </div><div><br></div><div>> 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/"<br></div><div><br></div><div>According to FindPython3 (<a href="https://cmake.org/cmake/help/v3.12/module/FindPython3.html">https://cmake.org/cmake/help/v3.12/module/FindPython3.html</a>), 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.</div><div><br></div><div>Cheers,</div><div>Jonas </div></div></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Feb 27, 2020 at 10:10 AM Adrian McCarthy via lldb-dev <<a href="mailto:lldb-dev@lists.llvm.org">lldb-dev@lists.llvm.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div dir="ltr">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.<div><br></div><div>When I run cmake, I explicitly point PYTHON_HOME to C:\Python36 like this:</div><div><br></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div><font face="monospace" size="1">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"</font></div><div><font face="monospace" size="1"><br></font></div></blockquote><font size="1" face="arial, sans-serif">But the generated Config.h contains:</font><div><br></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div><font face="monospace" size="1">#define LLDB_PYTHON_HOME "C:/Program Files (x86)/Microsoft Visual Studio/Shared/Python37_64"</font></div></blockquote><div><font size="1" face="arial, sans-serif"><br></font></div><div><font size="1" face="arial, sans-serif">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.</font></div></div>
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