On 01/20/2014 05:56 PM, Richard W.M. Jones wrote:
On Mon, Jan 20, 2014 at 03:24:12PM +0100, Björn Persson wrote:
Apparently RPMbuild has a pair of parameters "--with" and "--without"
that can supposedly enable and disable optional features in a package.
Has anyone seen any documentation that explains how those work and how
they interact with a spec file?
I want to be able to easily switch an option between these two states:
· off by default but can be enabled with "--with"
· on by default but can be disabled with "--without"
What's a good way to code that in the spec?
They are (IMHO) very confusing to implement. However have a look at a
the libvirt spec file for a working example:
http://pkgs.fedoraproject.org/cgit/libvirt.git/tree/libvirt.spec
The confusion with bcond comes from the fact the logic seems entirely
backwards. Which it kinda is, until one learns the logic behind it:
"%bcond_with foo" adds support for "--with foo" build option to the
spec. Which also happens to mean that the default is "without" - why
else would you need a --with option? And conversely, "%bcond_without
foo" adss "--without foo" build option, effectively also saying default
is "with".
The fact that *everybody* is (at least initially) confused about it says
something about the intuitiveness of the feature ... or lack of thereof :)
- Panu -
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