04:28:32: Starting: "C:\Program Files\CMake\bin\cmake.exe" --build C:/test_dir/foo%2bar/build --target all [1/4 0.5/sec] Automatic MOC and UIC for target Test [2/4 1.0/sec] Building CXX object CMakeFiles\Test.dir\tst_test.cpp.obj FAILED: CMakeFiles/Test.dir/tst_test.cpp.obj C:\PROGRA~2\MICROS~2\2019\COMMUN~1\VC\Tools\MSVC\1429~1.301\bin\HostX64\x64\cl.exe /nologo /TP -DQT_CORE_LIB -DQT_TESTCASE_BUILDDIR=\"C:/test_dir/foo%2bar/build\" -DQT_TESTLIB_LIB -IC:\test_dir\foo%2bar\build -IC:\test_dir\foo%2bar -IC:\test_dir\foo%2bar\build\Test_autogen\include -IC:\Qt\5.15.7\msvc2019_64\include -IC:\Qt\5.15.7\msvc2019_64\include\QtTest -IC:\Qt\5.15.7\msvc2019_64\include\QtCore -IC:\Qt\5.15.7\msvc2019_64\.\mkspecs\win32-msvc /DWIN32 /D_WINDOWS /W3 /GR /EHsc /MDd /Zi /Ob0 /Od /RTC1 /showIncludes /FoCMakeFiles\Test.dir\tst_test.cpp.obj /FdCMakeFiles\Test.dir\ /FS -c C:\test_dir\foo%2bar\tst_test.cpp cl : Command line error D8038 : invalid argument 'QT_TESTCASE_BUILDDIR="C:/test_dir/foo%2bar/build"' [3/4 1.5/sec] Building CXX object CMakeFiles\Test.dir\Test_autogen\mocs_compilation.cpp.obj FAILED: CMakeFiles/Test.dir/Test_autogen/mocs_compilation.cpp.obj C:\PROGRA~2\MICROS~2\2019\COMMUN~1\VC\Tools\MSVC\1429~1.301\bin\HostX64\x64\cl.exe /nologo /TP -DQT_CORE_LIB -DQT_TESTCASE_BUILDDIR=\"C:/test_dir/foo%2bar/build\" -DQT_TESTLIB_LIB -IC:\test_dir\foo%2bar\build -IC:\test_dir\foo%2bar -IC:\test_dir\foo%2bar\build\Test_autogen\include -IC:\Qt\5.15.7\msvc2019_64\include -IC:\Qt\5.15.7\msvc2019_64\include\QtTest -IC:\Qt\5.15.7\msvc2019_64\include\QtCore -IC:\Qt\5.15.7\msvc2019_64\.\mkspecs\win32-msvc /DWIN32 /D_WINDOWS /W3 /GR /EHsc /MDd /Zi /Ob0 /Od /RTC1 /showIncludes /FoCMakeFiles\Test.dir\Test_autogen\mocs_compilation.cpp.obj /FdCMakeFiles\Test.dir\ /FS -c C:\test_dir\foo%2bar\build\Test_autogen\mocs_compilation.cpp cl : Command line error D8038 : invalid argument 'QT_TESTCASE_BUILDDIR="C:/test_dir/foo%2bar/build"' ninja: build stopped: subcommand failed.