If I build a dynamic module against, say nginx 1.12.2 with `--with-compat`, will it work with, say nginx 1.12.1 (assuming --with-compat all around)
I assume not, because I found this in ngx_module.c, separate from the signature check. nginx_version has the minor version in it.
if (module->version != nginx_version) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"module \"%V\" version %ui instead of %ui",
file, module->version, (ngx_uint_t) nginx_version);
return NGX_ERROR;
}