[gentoo-dev] per package cflags (was Re: Do we want optimal performance?)

[Travis Tilley <lv@gentoo.org>]

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Daniel Goller wrote:
> although i am against overly tweaking CFLAGS, someone suggested 
> something that might be more sane to ask for:
> 
> /etc/portage/packages.cflags
> 
> an easy way to maintain your cflags you worked so hard for to obtain, 
> you can trade them in the forums or ebay and then append to your file, 
> not much work to implement in my eyes, and all the testing work is done 
> by those who want it

mkdir /etc/portage and copy this file there (MUCH thanks to solar for 
writing this. he like... kicks ass an stuff). it implements an 
/etc/portage/package.cflags without needing to patch portage. i think 
this might require portage 2.0.51_pre... no idea, i havent used 2.0.50 
in a while.


Travis Tilley <lv@gentoo.org>

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# Copyright 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

# /etc/portage/bashrc

if [ "$0" = "/usr/lib/portage/bin/ebuild.sh" ]; then

	if [ "${DEBUG}" != "" ]; then
		echo ----------------------------------------------------
		echo \$_=$_
		echo \$\*=$*
		echo \$@=$@
		echo \$0=$0


		echo PORTDIR=$PORTDIR
		echo CATEGORY=$CATEGORY
		echo PN=$PN
		echo PV=$PV
		echo PR=$PR
		echo PF=$PF
		echo P=$P

		echo USER=$USER
		echo HOME=$HOME
		echo PATH=${PATH}
		echo LD_PRELOAD=${LD_PRELOAD}
		echo ----------------------------------------------------
	fi

	eecho() {
		[ "$NOCOLOR" = "false" ] && echo -ne '\e[1;34m>\e[1;36m>\e[1;35m>\e[0m ' || echo -n ">>> "
		echo "$*"
	}

	case "$*"  in
		# stay really quiet here.
		depend) : ;;
		*)
			if [ "$(/bin/basename /${LD_PRELOAD})" = "libsandbox.so" ]; then
				eecho "$USER +sandbox($*) $PWD"
			else	
				eecho "$USER -sandbox($*) $PWD"
			fi
			if [ -e ${ROOT}/etc/portage/package.cflags ]; then
				save_IFS
				IFS=$'\n'
				for x in $(/bin/cat ${ROOT}/etc/portage/package.cflags); do
					unset IFS
					x="$(echo $x)"
					IFS=$'\n'
					if [ "${x:0:1}" != "#" ]; then
						PKG="${x%%[$'\t\n ']*}"
						if [ "$PKG" == "$CATEGORY/$PN" ]; then
							export CFLAGS="${x/$PKG/}"
							eecho "Using package.cflags entry for $PN - CFLAGS=\"${CFLAGS}\""
						fi
					fi
				done
				restore_IFS
			fi

		;;
	esac
fi


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