Enable POSIX threads support in GCC configuration

build-libraries.sh

@@ -128,7 +128,7 @@ cd "${LIB_BUILD_DIR}/openssl-${OPENSSL_VER}"
     no-shared no-dso no-async no-comp no-idea no-tests no-threads no-asm no-secure-memory no-seed no-weak-ssl-ciphers \
     no-afalgeng no-aria no-async no-bf no-blake2 no-camellia no-capieng no-cast no-chacha no-cms no-cmp no-ct \
     no-dgram no-dsa no-dtls no-ecdh no-ecdsa no-engine no-err no-filenames no-gost \
-    no-ocsp no-pinshared no-poly1305 no-posix-io no-rc2 no-rc4 no-rdrand no-rfc3779 no-rmd160 no-scrypt no-sctp no-siphash \
+    no-pinshared no-poly1305 no-posix-io no-rc2 no-rc4 no-rdrand no-rfc3779 no-rmd160 no-scrypt no-sctp no-siphash \
     no-sm3 no-srp no-srtp no-ssl-trace no-ssl3 no-ssl3-method no-ts no-whirlpool enable-ktls \
     -DNO_FORK -DHAVE_FORK=0