exiv2 cmake …报如下错误： ykyk-Vostro-3669:~/exiv2/build$ cmake .. -DCMAKE_BUILD_TYPE=Release -- ICONV_INCLUDE_DIR : -- ICONV_LIBRARIES : /usr/lib/x86_64-linux-gnu/libc.so CMake Error at cmake/compilerFlags.cmake:32 (if): if given arguments: COMPILE