CLion can't find CMake generated headers? - c++

Question

Going through the CMake tutorial:
├── CMakeLists.txt
├── src
│   └── main.cpp
└── templates
└── fooConf.h.in
CMakeLists.txt
cmake_minimum_required(VERSION 3.2)
project(foo)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
set(PROJECT_SOURCE_DIR src)
set(PROJECT_TEMPLATE_DIR templates)
set(SOURCE_FILES ${PROJECT_SOURCE_DIR}/main.cpp)
set(${PROJECT_NAME}_MAJOR 0)
set(${PROJECT_NAME}_MINOR 1)
set(${PROJECT_NAME}_MICRO 1)
configure_file (
"${PROJECT_TEMPLATE_DIR}/fooConf.h.in"
"${PROJECT_SOURCE_DIR}/fooConf.h"
)
add_executable(foo ${SOURCE_FILES})
templates/fooConf.h.in
#define #PROJECT_NAME#_VERSION_MAJOR #PROJECT_NAME##_VERSION_MAJOR#
#define #PROJECT_NAME#_VERSION_MINOR #PROJECT_NAME##_VERSION_MINOR#
#define #PROJECT_NAME#_VERSION_MICRO #PROJECT_NAME##_VERSION_MICRO#
src/main.cpp
#include <iostream>
#include "src/fooConf.h"
// Also tried: "fooConf.h"
int main() {
std::cout << foo_VERSION_MAJOR;
return 0;
}
[Error]
fatal error: src/fooConf.h: No such file or directory

Answer 1

Your fooConf.h header file is generated in the binary tree (precisely, under ${CMAKE_BINARY_DIR}/src/). So you should issue corresponded include_directories() command for use that file in #include. E.g.:
CMakeLists.txt
....
include_directories(${CMAKE_BINARY_DIR})
add_executable(foo ${SOURCE_FILES})
src/main.cpp
....
#include "src/fooConf.h"