CMake将标题添加到项目文件

Question

好的，我的根目录/CMakeLists.txt 中有以下代码。

cmake_minimum_required(VERSION 2.8)

if(NOT CMAKE_BUILD_TYPE)
    set(CMAKE_BUILD_TYPE Release CACHE STRING "Debug or Release" FORCE)
endif()

if(CMAKE_CONFIGURATION_TYPES)
    set(CMAKE_CONFIGURATION_TYPES "Debug;Release" CACHE STRING "Configurations" FORCE)
    mark_as_advanced(CMAKE_CONFIGURATION_TYPES)
endif()

execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory install)
SET(CMAKE_INSTALL_PREFIX install)

project(efge)

# include
add_definitions(-DEFGE_EXPORTS)
include_directories("${CMAKE_SOURCE_DIR}/include/EFGE/"
            "${CMAKE_SOURCE_DIR}/include/EFGE/Math"
            "${CMAKE_SOURCE_DIR}/include/EFGE/System")

# preconf
set(EFGE_SHARED_LIBS TRUE CACHE BOOL "Shared libraries (needs shared SFML libraries, too)")

if(WIN32)
    set(EFGE_STATIC_STD_LIBS FALSE CACHE BOOL "Statically linked runtime/standard libraries? Must match with SFML-Option.")
    if(EFGE_STATIC_STD_LIBS)
        if(EFGE_SHARED_LIBS)
            message("\nEFGE_STATIC_STD_LIBS and EFGE_SHARED_LIBS aren\'t compatible!")
        elseif(MSVC)
            foreach(flag CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE)
                if(${flag} MATCHES "/MD")
                    string(REGEX REPLACE "/MD" "/MT" ${flag} "${${flag}}")
                endif()
            endforeach()
        elseif(CMAKE_COMPILER_IS_GNUCXX)
            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -static-libgcc -static-libstdc++")
        endif()
    endif()
endif()

if(CMAKE_COMPILER_IS_GNUCXX)
    set(CMAKE_CXX_FLAGS "${CMAKE_CSS_FLAGS} -std=c++0x")
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x -stdlib=libc++")
    add_definitions(-DEFGE_USE_STD_RANDOMENGINE)
endif()

set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake/Modules/;${CMAKE_MODULE_PATH}")

if(NOT EFGE_SHARED_LIBS)
    set(SFML_STATIC_LIBRARIES TRUE)
endif()
find_package(SFML 2 COMPONENTS audio graphics window system)

if(SFML_FOUND)
    include_directories(${SFML_INCLUDE_DIR})
else()
    set(SFML_ROOT "" CACHE PATH "SFML top-level directory")
    message("\n SFML directory not found. Please set SFML_ROOT to SFML top-level path, wich contains /include/ and /lib/ directories.")
    message("Make sure SFML libraries have the same configuration.")
endif()

# linking sfml
macro(efge_link_sfml EFGE_TARGET)
    target_link_libraries(${EFGE_TARGET} ${SFML_LIBRARIES})
endmacro()
macro(efge_link_sfml_dependencies EFGE_TARGET)
    target_link_libraries(${EFGE_TARGET} ${SFML_DEPENDENCIES})
endmacro()

macro(efge_link_efge EFGE_TARGET)
    target_link_libraries(${EFGE_TARGET} efge)
endmacro()

# source
add_subdirectory(src)

# include
install(DIRECTORY include
        DESTINATION .)

如果这很重要，我的文件结构如下：

+-- include
       +-- Math
            +--- *.hpp files
       +-- System
            +--- *.hpp files
       +--- *.hpp files
+-- src
     +--- *.cpp files
     +--- CMakeLists.txt
+--- CMakeLists.txt

如何将标头添加到我生成的项目文件（例如 CodeBlocks）中？ Makefile 似乎工作正常。像set_group 这样的东西不会影响项目文件。 我想不通，第一次使用 CMake。谢谢！

Answer 1

我刚刚检查了以下组合：

1. CMake 2.8.12.1
2. 代码块 13.12

CodeBlocks 项目生成如下：

mkdir build
cd build
cmake -G 'CodeBlocks - Unix Makefiles' ..

我确实看到生成器生成了一个 .cbp 文件，其中列出了所有头文件。因此您可以查看 .cbp 文件并检查是否列出了头文件。如果不是，那么您应该检查您的 CMake 是否足够新鲜。

更新：

啊哈，我明白了。看来我已经用生成器重现了您的问题。这是最小的非工作示例：

project/
   CMakeLists.txt
   src/
        CMakeLists.txt
        test.cpp
   include/test.h

项目/CMakeLists.txt：

cmake_minimum_required(VERSION 2.8)

project(TestProject)

include_directories(include)

add_subdirectory(src)

项目/src/CMakeLists.txt：

cmake_minimum_required(VERSION 2.8)

project(TestProjectSources)

set(SOURCES test.cpp)

add_executable(test ${SOURCES})

项目/src/test.cpp

#include "test.h"

int main(void) {
    TestRun r;
    r.run();
    return 0;
}

项目/包含/test.h：

#ifndef _TEST_H_
#define _TEST_H_

#include <iostream>

class TestRun {
public:
    TestRun() { std::cout << "Hello World!" << std::endl; }
    void run() { std::cout << "Doing something useful" << std::endl; }
};

#endif // _TEST_H_

在这种情况下，生成器生成没有任何头文件的 TestProject.cbp。让我们看看如何解决这个问题。

Update2：好吧，我有一些坏消息要告诉你。不幸的是，负责搜索和添加头文件的 CodeBlocks 生成器的代码块太简单，无法正确处理您的情况。这是来自 CMake 来源的 Source/cmExtraCodeBlocksGenerator.cxx 的评论：

// The following loop tries to add header files matching to implementation
// files to the project. It does that by iterating over all source files,
// replacing the file name extension with ".h" and checks whether such a
// file exists. If it does, it is inserted into the map of files.
// A very similar version of that code exists also in the kdevelop
// project generator.

因此，您可能会看到这种方法只有在 test.cpp 和 test.h 并排位于一个目录中时才有用。所以这是进一步改进的方向。我可以建议与此论坛帖子http://forums.codeblocks.org/index.php?topic=16892.0 的人联系，并讨论如何改善这种情况。也许在项目生成中涉及gcc -MM -I<include directories> test.cpp 调用是合理的，但是这种方法很昂贵，并且如果目前无法编译代码可能很容易中断。