[openbeos-build-team] Re: Detecting libgcc
- From: Ingo Weinhold <bonefish@xxxxxxxxxxxxxxx>
- To: build team <openbeos-build-team@xxxxxxxxxxxxx>
- Date: Wed, 26 Jun 2002 13:58:48 +0200 (MET DST)
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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