CMake error when try to add external library
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I need to add an external library in my project. Here is the project structure: /- src/ - my source files here… |- dist/ |- FLTK |- lib/ |- libfltk.a |- libfltk_forms.a |- FL |- build/ |- main.cpp Here is my CMakeLists.txt cmake_minimum_required(VERSION 2.8) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -std=c++17") find_library(LibFltk ${CMAKE_CURRENT_SOURCE_DIR}/dist/FLTK/lib/libfltk.a) find_library(LibFltk_Forms ${CMAKE_CURRENT_SOURCE_DIR}/dist/FLTK/lib/libfltk_forms.a) if(APPLE) find_library(COCOA Cocoa) endif() include_directories(${CMAKE_CURRENT_SOURCE_DIR}/dist/FLTK) add_executable(${CMAKE_CURRENT_SOURCE_DIR}/build/main ${CMAKE_CURRENT_SOURCE_DIR}/main.cpp) target_link_libraries(${CMAKE_CURRENT_SOURCE_DIR}/build/mai...