pkg/29963: buildlink problem with escaped whitespace args

[jschauma%netmeister.org@localhost]

>Number:         29963
>Category:       pkg
>Synopsis:       buildlink problem with escaped whitespace args
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Apr 13 18:27:00 +0000 2005
>Originator:     Jan Schaumann
>Release:        NetBSD 2.0_STABLE
>Organization:
        
>Environment:
        
        
System: NetBSD dogfish-head.cs.stevens.edu 2.0_STABLE NetBSD 2.0_STABLE (BOCK) 
#3: Mon Apr 11 12:45:06 EDT 2005 
jschauma%doppelbock.hpcf.cs.stevens-tech.edu@localhost:/usr/2.0/src/sys/arch/i386/compile/obj/BOCK
 i386
Architecture: i386
Machine: i386
>Description:
It seems that buildlink is not dealing properly with arguments that
contain escaped whitespace.  For example, if your CFLAGS contains

-DTCL_WIDE_INT_TYPE=long\ long

then buildlink will turn this into

-DTCL_WIDE_INT_TYPE=long

and

long

thus messing up the compiler.

I think this happens in wrapper/arg-source...

>How-To-Repeat:
        install x11/tk
        try to build a package that sources /usr/pkg/lib/tkConfig.sh to
        determine various tcl/tk configuration flags.
        
        Note how the compiler will bail out.

        Note how work.log contains

            (arg-source) push: -DTCL_WIDE_INT_TYPE=long\
            (arg-source) push: long

>Fix:
        This probably involves some nasty quoting in buildlink3's complex
        interiors.

>Unformatted: