我正在使用Mac上的cmake构建我的c ++程序。编译器给出了以下错误:
error: boost/filesystem.hpp: No such file or directory
触发错误的行如下:
#include "boost/filesystem.hpp"
或
#include <boost/filesystem.hpp>
我使用上述哪一项并没有改变错误
但是在我的CMakeLists.txt中,我按以下方式包含了boost标题:
FIND_PACKAGE(Boost)
MESSAGE("Boost information:")
MESSAGE(" Boost_INCLUDE_DIRS: ${Boost_INCLUDE_DIRS}")
MESSAGE(" Boost_LIBRARIES: ${Boost_LIBRARIES}")
MESSAGE(" Boost_LIBRARY_DIRS: ${Boost_LIBRARY_DIRS}")
INCLUDE_DIRECTORIES(${Boost_INCLUDE_DIRS})
LINK_DIRECTORIES(${Boost_LIBRARY_DIRS})
在pmake进程中,Boost包括dirs填充了“/ opt / local / include /”,此文件夹包含一个包含filesystem.hpp的文件夹boost
Boost在生成Makefile时提供以下消息,我只复制了boost部分:
-- Boost version: 1.38.0
-- Found the following Boost libraries:
Boost information:
Boost_INCLUDE_DIRS: /opt/local/include
Boost_LIBRARIES:
Boost_LIBRARY_DIRS: /opt/local/lib
-- Configuring done
运行make VERBOSE = 1时此行包含错误:
cd /Users/janusz/Documents/workspace/ImageMarker/Debug/src && /usr/bin/c++ -O3 -Wall -Wno-deprecated -g -verbose -I/Users/janusz/Documents/workspace/ImageMarker/src/. -o CMakeFiles/ImageMarker.dir/FaceRecognizer.cpp.o -c /Users/janusz/Documents/workspace/ImageMarker/src/FaceRecognizer.cpp /Users/janusz/Documents/workspace/ImageMarker/src/FaceRecognizer.cpp:8:32: error: boost/filesystem.hpp: No such file or directory make[2]: *** [src/CMakeFiles/ImageMarker.dir/FaceRecognizer.cpp.o] Error 1
您是否理解为什么编译器没有选择/ opt / local / include目录?
如果您需要更多信息,我很乐意提供
答案 0 :(得分:15)
首先使用
FIND_PACKAGE(Boost REQUIRED)
而不是
FIND_PACKAGE(Boost)
这样一来,如果cmake在任何编译开始之前很久没有找到它就会给你一个很好的错误信息。如果失败,请将环境变量BOOST_ROOT设置为/ opt / local(这是安装前缀)。 此外,您必须链接文件系统库,所以你想要
FIND_PACKAGE(Boost COMPONENTS filesystem REQUIRED)
供以后使用
target_link_libraries(mytarget ${Boost_FILESYSTEM_LIBRARY})
输入
cmake --help-module FindBoost
在shell中获取cmake安装中Boost查找模块的文档。
PS:一个例子
CMakeLists.txt
cmake_minimum_required(VERSION 2.6)
project(Foo)
find_package(Boost COMPONENTS filesystem REQUIRED)
include_directories(${Boost_INCLUDE_DIRS})
add_executable(foo main.cpp)
target_link_libraries(foo
${Boost_FILESYSTEM_LIBRARY}
)
的main.cpp
#include <boost/filesystem.hpp>
#include <vector>
#include <string>
#include <cstdio>
#include <cstddef>
namespace fs = boost::filesystem;
using namespace std;
int main(int argc, char** argv)
{
vector<string> args(argv+1, argv+argc);
if(args.empty())
{
printf("usage: ./foo SOME_PATH\n");
return EXIT_FAILURE;
}
fs::path path(args.front());
if(fs::exists(path))
printf("%s exists\n", path.string().c_str());
else
printf("%s doesn't exist\n", path.string().c_str());
return EXIT_SUCCESS;
}
答案 1 :(得分:0)
您是否尝试过不包含“boost /”部分的 filesystem.hpp ?
答案 2 :(得分:0)
我通过在CMakeLists.txt中添加一些行来解决类似的问题。
cmake_minimum_required(VERSION 3.5)
project(MyResource)
function(myresources out_var)
set(RESULT)
foreach(in_f ${ARGN})
file(RELATIVE_PATH src_f ${CMAKE_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/${in_f})
set(out_f "${PROJECT_BINARY_DIR}/${in_f}.c")
add_custom_command(OUTPUT ${out_f}
COMMAND myresource ${out_f} ${src_f}
DEPENDS ${in_f}
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
COMMENT "Building binary file for ${out_f}"
VERBATIM)
list(APPEND result ${out_f})
endforeach()
set(${out_var} "${result}" PARENT_SCOPE)
endfunction()
find_package(Boost COMPONENTS filesystem REQUIRED)
find_path(BOOST_FILESYSTEM_INCLUDE_DIRS boost/filesystem.hpp)
add_executable(myresource myresource.cpp)
target_link_libraries(myresource ${Boost_FILESYSTEM_LIBRARY} ${Boost_SYSTEM_LIBRARY})
target_include_directories(myresource PUBLIC ${BOOST_FILESYSTEM_INCLUDE_DIRS})