如何使用 OpenSSL 包含编译 .c 文件?

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问题描述

我正在尝试编译一个包含以下内容的小型 .c 文件:

I am trying to compile a small .c file that has the following includes:

#include <openssl/ssl.h>
#include <openssl/rsa.h>
#include <openssl/x509.h>
#include <openssl/evp.h>

在我有 .c 文件的同一个文件夹中，我有一个/openssl 包含所有这些文件(以及更多)，也在突触包管理器中我看到安装了 OpenSSL，我试图用这个编译:

In the same folder where I have the .c file I have a /openssl with all those files (and more), also in synaptic package manager I see OpenSSL installed, I am trying to compile with this:

gcc -o Opentest Opentest.c -lcrypto

但我总是收到错误:

error: openssl/ssl.h: No such file or directory
error: openssl/rsa.h: No such file or directory
error: openssl/x509.h: No such file or directory
error: openssl/evp.h: No such file or directory

我要编译的文件只是一个 .c 文件，没有 Makefile 或 ./configure.

The file I want to compile is only a .c file, doesn't have Makefile or ./configure.

我已经试过了:

env CFLAGS=-I/path/to/openssl/

并尝试再次编译，但我遇到了相同的错误.

and tried to compile again but I get the same errors.

我应该怎么做才能使用 OpenSSL 包含进行编译?

What should I do in order to compile with OpenSSL includes?

推荐答案

您的包含路径表明您应该针对系统的 OpenSSL 安装进行编译.你的包目录中不应该有 .h 文件 - 它应该从 /usr/include/openssl 中提取它们.

Your include paths indicate that you should be compiling against the system's OpenSSL installation. You shouldn't have the .h files in your package directory - it should be picking them up from /usr/include/openssl.

普通 OpenSSL 包 (libssl) 不包含 .h 文件 - 您还需要安装开发包.这在 Debian、Ubuntu 和类似发行版上被命名为 libssl-dev，在 CentOS、Fedora、Red Hat 和类似发行版上被命名为 libssl-devel.

The plain OpenSSL package (libssl) doesn't include the .h files - you need to install the development package as well. This is named libssl-dev on Debian, Ubuntu and similar distributions, and libssl-devel on CentOS, Fedora, Red Hat and similar.

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