The evil CMake -- Compile bug, missing ')', error line number_cmakelist parse error function missing ending-优快云博客

本文深入分析了一个在使用CMake进行编译时遇到的常见错误，即在CMakeLists.txt文件中缺少右括号导致的错误提示误导。详细解释了如何识别和解决这一问题，通过逐行检查代码，最终定位到问题所在，并提供了避免此类错误的建议。

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In case our CMakeLists.txt have following codes:

#following sentence should be wirte as FILE(TO_NATIVE_PATH ${CMAKE_SOURCE_DIR} CMakeSrcDir)
FILE(TO_NATIVE_PATH ${CMAKE_SOURCE_DIR} CMakeSrcDir　　　　　　　　#line 34, notice the right paren ')' is missing


#the following block of code has no problems
IF(BUILD_TOOL MATCHES "MSVC")
　　　　#we have a lot of codes here
ELSE()
　　　　#we have a lot of codes here
ENDIF()　　　　　　　　#line 149
#this is the end of file

When compile with this source, CMake report errors: Parse error. Function missing ending ")". End of file reached, and give out the error line number is 149. But we looking into line 149, it's quite of simple, and nothing is wrong. As soon as we check the code line by line from down to up, and then reach line 34, finally we notice at here the right paren ')' is missing. The CMake report line 149, something mis-leading us, but why? Because in such case, the CMake compiler treat the entire block of code from line 34 to the end of file as the one sentence, due to the missing of ')'. So CMake did expect the ending should be at line 149. Just take a little care for that!