Prepare v2.1; various small fixes on code, build system, docs, and version compatibility#67

Merged

DDvO merged 14 commits intomasterfrom

Oct 28, 2025

Commits on Oct 17, 2025

util/log.c LOG_generic(): fix to-the-point compiler warnings on size and signedness of string length and snprintf result
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UTIL_parse_name(): fix type of 'chtype' parameter
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CREDENTIALS_new(): fix OPTIONAL label of cert parameter, update decl style
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constify some parameters of STORE_*() functions
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STORE_set1_host{,_ip}(),STORE_get0_host(): clean up for OpenSSL 3.0+: remove ex_data->host and update comments
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fix CONN_IS_IP_ADDR() introducing more correct CONN_is_IP_address()
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replace deprecated OCSP_parse_url() by OSSL_HTTP_parse_url() with OpenSSL 3.0+
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README.md: updates w.r.t. SW tool versions known to work here
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CMakeLists.txt: bump cmake_minimum_required to 3.18 (to prevent warnings)
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CMakeLists.txt: fix TODO for not using OpenSSL SSL component if SECUTILS_NO_TLS
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CMakeLists.txt: make sure to respect any set OPENSSL_DIR, in particular with macOS
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CMakeLists.txt: fix setting OPENSSL_VERSION, OPENSSL_INCLUDE_DIR, and OPENSSL_LIB
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CMakeLists.txt: fix default build mode to be Release; improve related diagnostics
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CMakeLists.txt,Makefile_v1,debian/: advance to version 2.1
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