ninja: error:multiple rules generate

Question

CMakLists.txt文件内容
set(LIB_SRC hello.cpp)
add_library(hello_static STATIC ${LIB_SRC})
set_target_properties(hello_static PROPERTIES OUTPUT_NAME hello)
set_target_properties(hello_static PROPERTIES CLEAN_DIECT_OUTPUT 1)

add_library(hello SHARED ${LIB_SRC})
set_target_properties(hello PROPERTIES OUTPUT_NAME hello)
set_target_properties(hello PROPERTIES CLEAN_DIECT_OUTPUT 1)

报错
CMake Error:
Running

'D:/Microsoft Visual Studio/2022/Community/Common7/IDE/CommonExtensions/Microsoft/CMake/Ninja/ninja.exe' '-C' 'D:/cmaketest/CMaketest/out/build/x64-debug' '-t' 'recompact'

failed with:

ninja: error: build.ninja:142: multiple rules generate /c/bin/hello.lib [-w dupbuild=err]

貌似set_target_properties命令根本不起作用，只要改成相同的名字就会报错，求拯救一下，已经卡了很久了

Answer 1

把hello_static库的OUTPUT_NAME改成别的名字，比如hello_static，不然和共享库的OUTPUT_NAME冲突了。

set_target_properties(hello_static PROPERTIES OUTPUT_NAME hello_static)