OPENSSL_config deprecation warning

[Jeffrey Walton]

Hi Everyone,

I'm building Wget 1.20.3 from the source tarball against OpenSSL 1.1.1d.

I'm catching a warning that looks like low hanging fruit:

gcc -DHAVE_CONFIG_H
-DSYSTEM_WGETRC=\"/home/jwalton/tmp/build-test/etc/wgetrc\"
-DLOCALEDIR=\"/home/jwalton/tmp/build-test/share/locale\" -I.
-I../lib -I../lib -I/home/jwalton/tmp/build-test/include -DNDEBUG
-I/home/jwalton/tmp/build-test/include
-I/home/jwalton/tmp/build-test/include
-I/home/jwalton/tmp/build-test/include
-I/home/jwalton/tmp/build-test/include -DNDEBUG -g2 -O2 -march=native
-fPIC -pthread -MT version.o -MD -MP -MF .deps/version.Tpo -c -o
version.o version.c
openssl.c: In function 'ssl_init':
openssl.c:178:7: warning: 'OPENSSL_config' is deprecated
[-Wdeprecated-declarations]
       OPENSSL_config (NULL);
       ^~~~~~~~~~~~~~

I believe the call to OPENSSL_config can be guarded:

#include <openssl/crypto.h>
...

#if OPENSSL_VERSION_NUMBER < 0x10001000L
    OPENSSL_config(NULL);
#else
    OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG |
        OPENSSL_INIT_ADD_ALL_CIPHERS |
        OPENSSL_INIT_ADD_ALL_DIGESTS);
#endif

Jeff