[openbeos-build-team] Re: Detecting libgcc
- From: "David Reid" <dreid@xxxxxxxxxxxx>
- To: <openbeos-build-team@xxxxxxxxxxxxx>
- Date: Wed, 26 Jun 2002 13:03:24 +0100
query -a libgcc.a will work nicely
How do we get that into jam though??
The how-to can be just that simple, but it needs to be somewhere so people
can read it :)
Probably also explain how to get Jam and maybe also give some guidance on
Bochs?
david
----- Original Message -----
From: "Ingo Weinhold" <bonefish@xxxxxxxxxxxxxxx>
To: "build team" <openbeos-build-team@xxxxxxxxxxxxx>
Sent: Wednesday, June 26, 2002 12:58 PM
Subject: [openbeos-build-team] Re: Detecting libgcc
>
> On Wed, 26 Jun 2002, David Reid wrote:
>
> > We really need to get this autodetected as it's causing a few comments
and
> > people to get annoyed...
>
> Is there an algorithm for this, or do you think of something simple like
> this:
>
> if $(OS) = BEOS
> {
> LIBGCCBASEDIRS = /boot/develop/tools/gnupro/lib/gcc-lib ;
> }
> else if $(OS) = LINUX
> {
> LIBGCCBASEDIRS = /usr/lib/gcc-lib /usr/local/lib/gcc-lib ;
> }
> # else...
>
> {
> # actually it should be something like
> #local libdirs = $(LIBGCCBASEDIRS)/$(OSTARGET)/$(GCCVERSION) ;
> # but I have no idea how to determine OSTARGET and GCCVERSION
> # (the latter is simple in theory: gcc -version, but can't be done
> # inside a Jambase/Jamfile). We could supply these variables to the
> # jam command though. Or we extend jam itself by a command invocation
> # rule.
>
> # work-around:
> # target
> local libdirs = [ GLOB $(LIBGCCBASEDIRS) : * ] ;
> # gcc version
> libdirs = [ GLOB $(libdirs) : * ] ;
>
> # filter those containing a libgcc.a
> local libs = [ GLOB $(libdirs) : libgcc.a ] ;
> libdirs = $(libs:D) ;
> # pick the first one?!
> LIBGCCDIR = $(libdirs[1]) ;
> }
>
> # ... use $(LIBGCCDIR)...
>
>
> Note: this uses the GLOB rule, which is a Jam 2.4 feature.
>
> > We also need a how-to for the build ASAP...
>
> Err, currently it would only contain `type: cd openbeos; jam'. Or do I
> miss something? Portability stuff?
>
> CU, Ingo
>
>
>
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