Date: Tue, 11 Jan 2000 03:18:57 +1100 (EST) From: Bruce Evans <bde@zeta.org.au> To: Alexander Leidinger <Alexander@leidinger.net> Cc: John Polstra <jdp@polstra.com>, current@FreeBSD.ORG Subject: Re: __sigisempty() undefined if "cc -g" used. Message-ID: <Pine.BSF.4.10.10001110304260.14795-100000@alphplex.bde.org> In-Reply-To: <200001101305.OAA02110@Magelan.Leidinger.net>
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On Mon, 10 Jan 2000, Alexander Leidinger wrote:
> On 10 Jan, Bruce Evans wrote:
>
> >> Better yet: DEBUG_FLAGS=-g
> >
> > Except it only supported in bsd.prog.mk and bsd.lib.mk, but not in
> > bsd.kmod.mk, kernel Makefiles, or if no bsd .mk files are included
> > A few verbose module makefiles add it explicitly. You can also use
> > COPTS, but it is only supported in bsd.prog.mk, bsd.kmod.mk and kernel
> > Makefiles.
>
> Didnīt we have "makeoptions DEBUG=-g" as a kernel option to compile the
> kernel with debug information? What about "config -g MYKERNEL"?
DEBUG is a private variable in kernel Makefiles. "config -g MYKERNEL"
is the only correct way to set it. "makeoptions DEBUG=-g" is a hackish
way to set it. It depends on knowing the the Makefiles' internals.
> Do we really need a global debug option which covers everything?
It's simpler to have the same global debug option for everything.
> If I read it correcly we have DEBUG_FLAGS for the userland (if it uses a
> bsd.{prog,lib}.mk) and DEBUG for the kernel (and COPTS for KLD's),
> right?
No. DEBUG is quite different.
> So we only have to make the KLD's consistent to the kernel (or am
> I missing something):
>
> bsd.kmod.mk:
> ---snip---
> 92c92
> < CFLAGS+= ${COPTS} -D_KERNEL ${CWARNFLAGS}
> ---
> > CFLAGS+= ${DEBUG} -D_KERNEL ${CWARNFLAGS}
> ---snip---
This would break COPTS :-). All places should use something more like:
CFLAGS+= [-D_KERNEL] ${CWARNFLAGS} ${COPTS} ${DEBUG_FLAGS}
Bruce
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