Cmake中出现Ogre错误

Question

在我的代码中实现CMake时，我得到了一个ogre错误：

/usr/bin/ld: cannot find -lOGRE

我的CMakeLists.txt文件如下所示：

#Specify the version being used aswell as the language
cmake_minimum_required(VERSION 2.6)

#Name your project here
project(eCAD)

#sets cmake to run moc when needed
set(CMAKE_AUTOMOC ON)

#find requirements of this projects
find_package(Qt5Widgets)
find_package(Qt5Core) 
find_package(OGRE)
find_package(OIS)
# Find includes in corresponding build directories
set(CMAKE_INCLUDE_CURRENT_DIR ON)

#Sends the -std=c++11 flag to the gcc compiler
add_definitions(-std=c++11)

qt5_wrap_ui(Cmake_form_hdr resources/ui/mainwindow.ui)

#This tells CMake to main.cpp and name it eCAD
add_executable(eCAD main.cpp  ${Cmake_form_hdr})

#include the subdirectory containing our libs
add_subdirectory (gui)
include_directories(gui)

#link_libraries
target_link_libraries(eCAD Qt5::Widgets Qt5::Core OGRE OIS) 

我对此还不熟悉。请帮我解决这个问题

Answer 1

命令find_package(OGRE)运行文件FindOGRE.cmake并设置变量OGRE_INCLUDE_DIRS和OGRE_LIBRARIES。要链接到OGRE库，您应该使用这些变量，例如

target_include_directories(eCAD PRIVATE ${OGRE_INCLUDE_DIRS}) target_link_libraries(eCAD ${OGRE_LIBRARIES})

这对于您使用的所有外部库都是一样的。