第一次用cmake也是第一次编译，在编译的时候遇到如下问题如何解决，有大牛直接给答案吗！
[root@localhost cairo-dock-plugins-3.4.0]# cmake CMakeLists.txt
-- checking for module 'gldi=3.4.0'
-- package 'gldi=3.4.0' not found
CMake Error at /usr/share/cmake/Modules/FindPkgConfig.cmake:279 (message):
A required package was not found
Call Stack (most recent call first):
/usr/share/cmake/Modules/FindPkgConfig.cmake:333 (_pkg_check_modules_internal)
CMakeLists.txt:52 (pkg_check_modules)
Package gldi was not found in the pkg-config search path.
Perhaps you should add the directory containing `gldi.pc'
to the PKG_CONFIG_PATH environment variable
No package 'gldi' found
CMake Error at CMakeLists.txt:60 (MESSAGE):
Error: version mismatch with the core: 3.4.0 <>
