help loading additional macros from file

[Tim Mooney]

All-

I need some macro-fu help. I want to (in a spec file)

- test to see if a particular macro is defined.
- if it's not, I would like to
- source/load a file that has additional macro definitions, making
them available in my spec file.
- for extra credit, if the file doesn't exist, exit with an error.


It looks like I can do the test part with something like

%if %{undefined perl_sitelib}

but I'm unsure how to accomplish the "load additional macros from an
external file" part. I would be using this with rpm 4.0.4 (from RHEL 2.1)
all the way up to current rpm.


Thanks,

Tim

[Michael Jennings]

On Tuesday, 03 July 2007, at 11:54:03 (-0500),

Post by Tim Mooney
I need some macro-fu help. I want to (in a spec file)
- test to see if a particular macro is defined.
- if it's not, I would like to
- source/load a file that has additional macro definitions, making
them available in my spec file.
- for extra credit, if the file doesn't exist, exit with an error.
It looks like I can do the test part with something like
%if %{undefined perl_sitelib}

%if %{?perl_sitelib:1}0

is probably more portable.

Post by Tim Mooney
but I'm unsure how to accomplish the "load additional macros from
an external file" part. I would be using this with rpm 4.0.4 (from
RHEL 2.1) all the way up to current rpm.

With RPM 4.0.4, I'm pretty sure the answer is "you can't."

Michael

[Tim Mooney]

Post by Michael Jennings

Post by Tim Mooney
It looks like I can do the test part with something like
%if %{undefined perl_sitelib}

%if %{?perl_sitelib:1}0
is probably more portable.

Ok, thanks.

Post by Michael Jennings

Post by Tim Mooney
but I'm unsure how to accomplish the "load additional macros from
an external file" part. I would be using this with rpm 4.0.4 (from
RHEL 2.1) all the way up to current rpm.

With RPM 4.0.4, I'm pretty sure the answer is "you can't."

Can it be done with recent RPM?

Tim

[Michael Jennings]

On Tuesday, 03 July 2007, at 15:43:34 (-0500),

Post by Tim Mooney
Can it be done with recent RPM?

Yes.

I forget exactly when it went in, but at least in 4.4.9 you can do
something like this:

Source10: mymacros
%{load:%{SOURCE10}}

Michael

[Tim Mooney]

Post by Michael Jennings
On Tuesday, 03 July 2007, at 15:43:34 (-0500),

Post by Tim Mooney
Can it be done with recent RPM?

Yes.
I forget exactly when it went in, but at least in 4.4.9 you can do
Source10: mymacros
%{load:%{SOURCE10}}

Thanks.

Tim

[Paul Nasrat]

Post by Tim Mooney
All-
I need some macro-fu help. I want to (in a spec file)
- test to see if a particular macro is defined.
- if it's not, I would like to
- source/load a file that has additional macro definitions, making
them available in my spec file.
- for extra credit, if the file doesn't exist, exit with an error.
It looks like I can do the test part with something like
%if %{undefined perl_sitelib}

Does something like this work for you:

%{!?foo: %{expand: %%include /path/to/foo}}

Where /path/to/foo contains a bunch of %global foo bar type definitions,
you can include from the build root or a SourceN too

Paul

[Tim Mooney]

Post by Paul Nasrat

Post by Tim Mooney
All-
I need some macro-fu help. I want to (in a spec file)
- test to see if a particular macro is defined.
- if it's not, I would like to
- source/load a file that has additional macro definitions, making
them available in my spec file.
- for extra credit, if the file doesn't exist, exit with an error.
It looks like I can do the test part with something like
%if %{undefined perl_sitelib}

%{!?foo: %{expand: %%include /path/to/foo}}
Where /path/to/foo contains a bunch of %global foo bar type definitions,
you can include from the build root or a SourceN too

Yup, works perfectly, even on RHEL 2.1.

Thanks for the tip!

Tim

[Jeff Johnson]

Post by Tim Mooney
Yup, works perfectly, even on RHEL 2.1.
Thanks for the tip!

All that is really needed is
SourceN: mymacros
...
%if %{!? perl_sitelib:1}0
%(cat %SOURCEn)
%endif
where mymacros contains
%define foo bar
...

That improves on %include (which is hardly ever used), and
preserves the pretense of reproducible builds.

73 de Jeff