On Thu, Apr 01, 2004 at 10:50:33AM -0500, Piela, Ben wrote:
> Hello all,
>
> I was just looking around the /usr/lib/rpm/macros file at some of the
> default macros and I had a question about macro syntax.
>
> It seems the RPM_BUILD_DIR environment variable is defined as
>
> RPM_BUILD_DIR=\"%{u2p:%{_builddir}}\"
>
> I am having a hard time figuring out what the "u2p" part of that definition
> means. %_builddir is defined earlier in the file. Is this the format of a
> conditional macro? Or is this a builtin macro?
>
u2p is a macro primitive that strips the leading part of a URI
(like file://hostname/path) and leaves behind only the path component.
Does nothing at all with normal paths.
> What about the following:
>
> %___build_shell %{?_buildshell:%{_buildshell}}%{!?_buildshell:/bin/sh}
>
> Does this say something along the lines of set %___build_shell to the value
> of %_buildshell if it exists. If it doesn't exist, set the value to
> /bin/sh?
>
That's gooky syntax for
if build shell exists
then the value is %{_buildshell}
else the value is "/bin/sh"
73 de Jeff
--
Jeff Johnson ARS N3NPQ
jbj@xxxxxxxxxx (jbj@xxxxxxx)
Chapel Hill, NC
_______________________________________________
Rpm-list mailing list
Rpm-list@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/rpm-list
