Re: [gentoo-user] Setting CFLAGS for a single build

[dhk]

I did the build the non-persistent way and ran my program with the 
debugger.  When I got to the breakpoint for the the library function it 
says "no line number". See the following from gdb.

3271	  pobj=xmlXPathEvalExpression(tag, pctx);
(gdb)

Breakpoint 3, 0x00002ab4493e4480 in xmlXPathEvalExpression ()
    from /usr/lib/libxml2.so.2
(gdb)
Single stepping until exit from function xmlXPathEvalExpression,
which has no line number information.

Does this mean the source was removed after the emerge?  If so how can I 
keep the source.

Also I like the idea of using "/etc/portage/env/category/package" but 
I'm not sure what to do since I don't have the env directory.  Would I 
just do a mkdir -p /etc/portage/env/dev-libs/ and create a file called 
libxml2 with CFLAGS="$CFLAGS -g2" in it?

Thanks all,

Dave




Sebastian Magri wrote:
> You can use the "/etc/portage/env/category/package" to declare environment
> variables for specific packages...
>
> 2008/5/25 Erik Ruotsalainen <aegis@×××××.fi>:
>
>> On Sat, May 24, 2008 at 10:02:50AM +0000, dhk wrote:
>>> How can I modify the CFLAGS before emerging a package?  I want to add
>>> -g2 to the compile of libxml2 so I can step through their functions.  If
>>> I add -g2 to CFLAGS in make.conf it will do it for all packages which is
>>> not what I want.
>>>
>>> Thanks,
>>>
>>> Dave
>>> --
>>> gentoo-user@l.g.o mailing list
>>>
>> Same way as with USE flags, I think.
>>
>> # CFLAGS="-g2" emerge libxml2
>>
>> - aegis
>> --
>> gentoo-user@l.g.o mailing list
>>
>>
>
>

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