On Thu, Dec 20, 2018 at 8:02 AM Peter Kleiweg <pklei...@xs4all.nl> wrote:
>
> Ian Lance Taylor <i...@golang.org> schreef op 20 december 2018 16:47:20 CET:
> > On Thu, Dec 20, 2018 at 1:07 AM Peter Kleiweg <pklei...@xs4all.nl>
> > wrote:
> > >
> > > Ian Lance Taylor <i...@golang.org> schreef op 20 december 2018
> > 00:06:58 CET:
> > >
> > > > How about this:
> > > >
> > > > Move the C files to a subdirectory.  Write a script or Makefile
> > that
> > > > compiles the C files into a .syso file in the main package
> > directory,
> > > > using flags that you specify.  Fetch the package using `go get
> > -d`.
> > > > Run the script with the appropriate flags to generate the .syso
> > file.
> > > > At that point `go build` should work.
> > >
> > > The C files are part of the package. This would mean, downloading
> > the package and reorganize it.
> >
> > I was imagining that this rearrangement would be done at the package
> > source, not each time it was downloaded.
>
> That would be nice, but the package developers are not on our payroll. They 
> do not cater for our odd requirements.
>
> > > I was thinking there might be a better way. Add a file with local
> > configuration, a file that imports '"C" and sets CFLAGS and LDFLAGS,
> > without modifying the official package files. This works, except for
> > packages that rely on pkg-config. I don't see how I can modify the
> > contents of PKG_CONFIG_PATH in a Go file.
> >
> > Sure, that could work too.
> >
> > I don't understand why pkg-config would need to be correct on a
> > specific system.  Why would pkg-config be incorrect?
>
> Sometimes, standard systems are too rigid. Things clash. Sometimes, you have 
> to bend the accepted practices to get very odd bunches of software to work 
> together. So you work in an odd environment. The Gnu build system handles 
> this very well. It gives you options to tweak anything. In comparison, Go is 
> rigid, and becoming more rigid. It assumes too much sameness on development 
> platforms.
>
> Why would pkg-config be incorrect? Who cares. I just want to be able to fix 
> it, when I need to. And I need to.

Adding the file with the local configuration should work just as well
when you need to adjust pkg-config results as it would for a package
that does not use pkg-config.

I'm sorry you have trouble with the go tool.  But to me it sounds like
you were using binary packages as a hack to get around that trouble,
not as a clean solution.  There are good reasons why binary packages
do not work in general, as I outlined earlier.

It sounds like you should be using a more flexible tool, such as make,
rather than trying to force-fit your complex and unusual scenario into
the go tool.

Ian

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