Can't generate an Xcode project

[Dalzhim]

When attempting to generate an Xcode project from the CMakeLists.txt, I get multiple occurrences of the following error:

CMake Error in src/parser/CMakeLists.txt:
  The custom command generating

    /safe-cplusplus/Build/src/parser/cxx-ast-flatbuffers/ast_generated.h

  is attached to multiple targets:

    cxx-parser
    GENERATE_cxx-ast-flatbuffers

  but none of these is a common dependency of the other(s).  This is not
  allowed by the Xcode "new build system".

[Dalzhim]

Adding this line: add_dependencies(cxx-parser GENERATE_cxx-ast-flatbuffers) to src/parser/CMakeLists.txt allowed me to generate an Xcode project. The cmake --build build command then failed upon the first invocation and succeeded on the second one. Here are the errors from the first failed attempt:

PhaseScriptExecution CMake\ PostBuild\ Rules /safe-cplusplus/Build/build/test_api.build/Debug/Script-0341BE3438CC42D76CABB392.sh (in target 'test_api' from project 'cplusplus')
    cd /safe-cplusplus
    /bin/sh -c /safe-cplusplus/Build/build/test_api.build/Debug/Script-0341BE3438CC42D76CABB392.sh
CMake Error at /usr/local/share/cmake-3.31/Modules/GoogleTestAddTests.cmake:132 (message):
  Error running test executable.

    Path: '/safe-cplusplus/Build/tests/api_tests/Debug/test_api'
    Working directory: '/safe-cplusplus/Build/tests/api_tests'
    Result: Subprocess killed
    Output:

PhaseScriptExecution CMake\ PostBuild\ Rules /safe-cplusplus/Build/build/test_lsp.build/Debug/Script-3868E5298CCBF949914FDCD2.sh (in target 'test_lsp' from project 'cplusplus')
    cd /safe-cplusplus
    /bin/sh -c /safe-cplusplus/Build/build/test_lsp.build/Debug/Script-3868E5298CCBF949914FDCD2.sh
CMake Error at /usr/local/share/cmake-3.31/Modules/GoogleTestAddTests.cmake:132 (message):
  Error running test executable.

After the second attempt succeeded, I was able to execute ctest --progress successfully and get 100% tests passed, 0 tests failed out of 31.

[robertoraggi]

Thanks for the report @Dalzhim. I will apply your suggestion this weekend.

[robertoraggi]

Added your suggestion to #431
Thanks again for the report.