info@xxxxxxxxxxxxxxxx (dan) writes: [snip] > I've also wondered this for quite some time. This would be a very > valuable tool. Sometimes, as James says, you are able to spend some > time and find out, from the .spec file, what the build-time options > are. Others, you're not, due to the variable nature of each .spec file > to get the software to compile on a variable range of machines. > > This should be something that is given a great amount of consideration > to, or at least having RPM create a file or appending to the .spec in > commented code how exactly the RPM was built, or at laest an option > for that - perhaps in the changelog somewhere. I don't know. Maybe > next version, huh? ;) Openpkg packages do this by default (even if they way they do this is not standard): $ /openpkg/bin/openpkg rpm -qi postfix Name: postfix Source RPM: postfix-2.1.5-2.3.0.src.rpm Version: 2.1.5 Signature: md5:9c5be2cba30cd0ed89f4e106bc19abec Release: 2.3.0 Build Host: nl.wl0.org Group: Mail Build System: ix86-whitebox3.0 Class: BASE Build Time: Sun Apr 10 12:17:35 2005 Distrib: OpenPKG Install Time: Sun Apr 10 12:18:00 2005 License: IPL Install Size: 33205588 bytes Packager: The OpenPKG Project Relocations: /openpkg Vendor: Wietse Venema Summary: Mail Transfer Agent (MTA) URL: http://www.postfix.org/ Description: Postfix is a new-generation Mail Transfer Agent (MTA) able to fully replace the Sendmail MTA. Local specifics in this OpenPKG version: o Postfix delivers locally via Procmail o Postfix logs directly to the filesystem and not via syslog(3) o Berkeley-DB lookup table support o PCRE matching support o Optional STARTTLS support (see package options below) o Optional SASL2 authentication support (see package options below) o Optional MySQL support (see package options below) o Optional OpenLDAP support (see package options below) o Optional WHOSON support (see package options below) Provides: postfix::with_fsl = yes postfix::with_ssl = no postfix::with_sasl = no postfix::with_spf = no postfix::with_srs = no postfix::with_mysql = no postfix::with_ldap = no postfix::with_whoson = no postfix::with_fdsetsize = no MTA postfix = 2.1.5-2.3.0 ================================= The nice thing is the build system can query the package and upgrade it with the same options (rebuilding from the source rpm). It would be nice if something like this was made more generic and used by everyone, although that would take a lot of work from the package maintainers. So it _can_ be done even if most distributions don't do it. Simon
