Download the python version 3.5.2 source code from official web site.
Compile the python code by the following steps:
sudo ./configure
sudo make
sudo make install

but from make, I get the following errors:


/home/boot/tools/Python-3.5.2/Modules/_ssl.c:2582:46: error: dereferencing pointer to incomplete type ‘X509_STORE {aka struct x509_store_st}’
     flags = X509_VERIFY_PARAM_get_flags(store->param);
                                              ^
/home/boot/tools/Python-3.5.2/Modules/_ssl.c: In function ‘_ssl__SSLContext_load_cert_chain_impl’:
/home/boot/tools/Python-3.5.2/Modules/_ssl.c:2782:48: error: dereferencing pointer to incomplete type ‘SSL_CTX {aka struct ssl_ctx_st}’
     pem_password_cb *orig_passwd_cb = self->ctx->default_passwd_callback;
                                                ^
/home/boot/tools/Python-3.5.2/Modules/_ssl.c: In function ‘_ssl__SSLContext_cert_store_stats_impl’:
/home/boot/tools/Python-3.5.2/Modules/_ssl.c:3443:20: error: dereferencing pointer to incomplete type ‘X509_OBJECT {aka struct x509_object_st}’
         switch (obj->type) {
                    ^
/home/boot/tools/Python-3.5.2/Modules/_ssl.c:3453:18: error: ‘X509_LU_PKEY’ undeclared (first use in this function)
             case X509_LU_PKEY:

then I install the openssl by compiling download code,and the ssl can work, and compile python code,the error still exists.
please help me check where I take a mistake.
Thanks a lot.

What is your platform, compiler and OpenSSL version?

Hi Christian,
    Thanks for your reply.

The machine's information as following:

Platform: x86_64;

OS: ubuntu16.04;

Compiler: gcc (Ubuntu 5.4.0-6ubuntu1~16.04.4) 5.4.0 20160609;

Openssl version:OpenSSL 1.1.0c  10 Nov 2016.

Python 3.5.2 is not compatible with OpenSSL 1.1.0. You have to wait until 3.5.3 is released in about a month or downgrade OpenSSL to 1.0.2.

Hi Christian,

    This issue is resolved.

Thanks a lot.