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…nSSL 4) SAC_OPENSSL decides whether libssl is usable with AC_CHECK_LIB(ssl, TLSv1_method). OpenSSL 4.0 removed the fixed-version method functions, so the probe fails there, HAVE_TLS is cleared and -lssl is not added to LIBS. With signalwire#3185 applied configure then succeeds but the build stops when linking mod_sofia's test program: undefined reference to symbol 'SSL_CTX_check_private_key@@OPENSSL_4.0.0' TLS_method is available from OpenSSL 1.1.0 on.
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SAC_OPENSSLdecides whether libssl is usable withAC_CHECK_LIB(ssl, TLSv1_method). OpenSSL 4.0 removed the fixed-version method functions, so on 4.0 the probe fails,HAVE_TLSis cleared and-lsslis not added toLIBS:With #3185 applied, configure then succeeds, but the build stops when linking mod_sofia's test program:
This changes the probe to
TLS_method, which is available from OpenSSL 1.1.0 on. Tested by building against OpenSSL 4.0.3 (with #3185) and starting the resulting build.Related: #3159. The same macro in sofia-sip is covered by freeswitch/sofia-sip#337.