# QWT if(DEFINED ENV{QWT_ROOT}) message(STATUS "QWT_ROOT environment variable defined, using QWT_ROOT paths.") # copy QWT dlls for easy launch if (WIN32) file(GLOB_RECURSE QWT_DLLS "$ENV{QWT_ROOT}/lib/*.dll" ) file(COPY ${QWT_DLLS} DESTINATION ${CMAKE_BINARY_DIR}) file(COPY ${QWT_DLLS} DESTINATION ${CMAKE_BINARY_DIR}/Tests) endif() else() configure_file(CMakeLists.txt.qwt qwt/CMakeLists.txt) execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}"

根据你提供的代码片段，我发现在该语句之前确实缺少了一个右括号，尤其是在 `if(DEFINED ENV{QWT_ROOT})` 这一行后面，需要加上一个右括号来闭合这个 if 语句块。你可以尝试修改代码如下：

# QWT 
if(DEFINED ENV{QWT_ROOT})
    message(STATUS "QWT_ROOT environment variable defined, using QWT_ROOT paths.")
    # copy QWT dlls for easy launch
    if (WIN32)
        file(GLOB_RECURSE QWT_DLLS "$ENV{QWT_ROOT}/lib/*.dll" )
        file(COPY ${QWT_DLLS} DESTINATION ${CMAKE_BINARY_DIR})
        file(COPY ${QWT_DLLS} DESTINATION ${CMAKE_BINARY_DIR}/Tests)
    endif()
else()
    configure_file(CMakeLists.txt.qwt qwt/CMakeLists.txt)
endif()

execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .)

这样修改之后应该可以避免缺少右括号的问题。