CDEBUGFLAGS versus CFLAGS

From: Fox (no_at_spam.com)
Date: 06/12/04 

Date: Sat, 12 Jun 2004 18:10:58 GMT

I am attempting to build the latest version of X11 from source (x.org) and
using a Slackware build script as my starting point. I have so far been
able to understand all of the steps except for one (which I don't believe
is related strictly to Slackware).

Here is the location of the script: ftp://slackware.oregonstate.edu/pub
slackware/slackware-current/source/x/x11/x11.SlackBuild

When building X11, the script issues the command:

make World -j2 -i CDEBUGFLAGS="$SLKCFLAGS"

where $SLCKFLAGS is equal to "-O2 -march=if486 -mcpu=i686".

My question is: why is the script using CDEBUGFLAGS instead of CFLAGS? What
is the difference between the two?

Also, another important question. Where are the options for the makefile
documented? How can I determine if the option DESTDIR supported?

Thanks.

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