[CMake] Getting cmake to apply patches

[Alan W. Irwin]

On 2009-11-25 11:00+1200 Hugh Sorby wrote:

> Sorry about that missed a chdir should be
>
> cmake -E chdir netgen patch -p0 -i netgen-4.9.11.patch

I confirm that you have found a bug (at least with Debian stable Linux and a
bootstrapped cmake version 2.8.0-rc6).  Here is a simple demonstration
with "ls -i".

software at raven> ls -i config.h
4539478 config.h

software at raven> cmake -E chdir . ls -i config.h
config.h

In other words the ls -i option is consumed by CMake just like the patch -i
option is consumed for you.  Note that -i is an
option for CMake itself (wizard mode) so there is probably some screwup
in interpretation of the command line when cmake -E is being run.
If I change the flag from -i to -l, then the flag is not consumed and
you get the same results for

"ls -l config.h" and "cmake -E chdir . ls -l config.h".  That's consistent
with the idea that you will only have trouble with cmake consuming the
option when it is an option it recognizes.  ("-l" is not a cmake command
option while "-i" is).

I also confirm the bug occurs for cmake-2.6.0 (the Debian stable system
version) which makes it a bug that has been around for quite a while.  I
suggest you go ahead and put it in the bugtracker (if you cannot find
another report about the same issue there).

Until this cmake -E option consuming bug is fixed I suggest you could avoid
the -i option with patch by using, e.g.,

cmake -E chdir netgen patch -p0 <netgen-4.9.11.patch

Alan
__________________________
Alan W. Irwin

Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).

Programming affiliations with the FreeEOS equation-of-state implementation
for stellar interiors (freeeos.sf.net); PLplot scientific plotting software
package (plplot.org); the libLASi project (unifont.org/lasi); the Loads of
Linux Links project (loll.sf.net); and the Linux Brochure Project
(lbproject.sf.net).
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