Hello!
+#define HAVE_SSL_GROUPS \
+ defined(HAVE_DECL_SSL_GET1_GROUPS) && \
+ defined(HAVE_DECL_SSL_GET_NEGOTIATED_GROUP) && \
+ defined(HAVE_SSL_GROUP_TO_NAME)
I don't think this check works properly
1. autoconf/meson always defines HAVE_DECL to 0/1, so defined() always
returns true
2. in practice it should work, but using defined() in a macro
expansion is undefined behavior