问题描述
我有一个问题要问在 C++ 中使用 CMakeList.txt 的人.我想使用 Podofo 项目(一个解析和创建 pdf 的项目).
I have a question for people who work with CMakeList.txt in C++. I want to use Podofo project (a project to parse & create pdf).
所以我的主要功能很简单:
So my main function is simple as:
#include <iostream>
#include <podofo/podofo.h>
int main() {
PoDoFo::PdfMemDocument pdf;
pdf.Load("/Users/user/path/to.pdf");
int nbOfPage = pdf.GetPageCount();
std::cout << "Our pdf have " << nbOfPage << " pages." << std::endl;
return 0;
}
我的 CMakeList.txt 是:
My CMakeList.txt is:
cmake_minimum_required(VERSION 3.7)
project(untitled)
set(CMAKE_CXX_STANDARD 14)
set(SOURCE_FILES main.cpp)
add_executable(untitled ${SOURCE_FILES})
但我被这个错误困住了:
But I am stuck with this error:
/usr/local/include/podofo/base/PdfEncrypt.h:44:10: fatal error: 'openssl/opensslconf.h' file not found
#include <openssl/opensslconf.h
我尝试使用 find_package、find_library 来包含 .. 设置了一些变量，但我没有找到方法.
I tried to include with find_package, find_library .. setting some variables but I do not find the way.
我的环境是:
- macOS
- 克里昂
- Podofo 通过 home-brew 安装在
/usr/local/podofo - OpenSSL 通过 home-brew 安装在
/usr/local/opt/openssl
感谢提前社区!!
推荐答案
find_package 是正确的做法；您可以在此处找到有关它的详细信息.
find_package is the correct approach; you find details about it here.
在您的情况下，您应该添加以下几行:
In your case, you should add these lines:
find_package(OpenSSL REQUIRED)
target_link_libraries(untitled OpenSSL::SSL)
如果CMake没有直接找到OpenSSL，你应该设置CMake变量OPENSSL_ROOT_DIR.
If CMake doesn't find OpenSSL directly, you should set the CMake variable OPENSSL_ROOT_DIR.
这篇关于在 CMakeList.txt 文件中包含 OpenSSL的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持跟版网！