ehahn / paludis-bashrc
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Description: A bashrc for paludis supporting the Intel C++ compiler and per-package CFLAGS
Homepage: http://ihatenicks.bplaced.net/paludis-bashrc/
Clone URL: git://github.com/ehahn/paludis-bashrc.git
paludis-bashrc / bashrc
100644 134 lines (107 sloc) 2.773 kb
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#!/bin/bash
# Without the shebang, not all Syntax highlighters would recognize it
 
# Bashrc for Paludis supporting multiple C/C++ compilers and per-package CFLAGS
# Version 0.2.1.1
# © 2008 Erik Hahn <erik_hahn@gmx.de>
# distributed under the GPLv2 or later.
 
# $path causes problems in some ebuilds. Wherever it comes from, fixing
# it doesn't harm
unset path
 
# Enable extended globbing
shopt -s extglob
 
# clear debug file
if [[ -e "/tmp/pbshrc-test" ]]; then
	echo "" > /tmp/pbshrc-test
fi
 
function debug(){
	if [[ -n $debug && $debug == 1 ]]; then
		echo "$(date +%T) $1" >> /tmp/pbshrc-test
	fi
}	
 
function matchatom(){
	debug "Test: $1"
	if [[ "$1" =~ ^($CATEGORY|\*)/($PN|\*)(:$SLOT})?$ ]] ; then
		debug "Match 1: $1"
		return 0
	else
		debug "No Match"
		return 1
	fi
}
 
function parseconfig(){ #{{{
	# set up some vars
	local tmpfile="/tmp/paludisbashrc-$RANDOM"
	local data
	local atom
	local ret
	local fil
 
	while read atom data; do
			if matchatom "$atom"; then
				if ((append)); then 			
					ret="$ret ${data%%#*}"
				else
					ret="${data%%#*}"
				fi
			fi
	done < $1
 
	if [ $append -eq 1 ]; then #{{{
		# Now filter out unwanted flags. They begin with '+' instead of '-'
		fil="${ret// -*([0-9A-Za-z,=-])}"
		fil=${fil//-([0-9A-Za-z,=-]*)}
		fil=${fil//+/-}						#replace the pluses by minuses
		echo "${fil} " > $tmpfile		# I don't like using a temporary file
 
		ret=${ret//++([0-9A-Za-z,=-]*)}		#remove filtering flags from $ret
 
		# Finally, filter them out
		while read -d' ' flag; do
			if [ -n $flag ]; then
				ret=${ret//${flag}/}
			fi
		done < $tmpfile
 
		rm $tmpfile
 
	fi #}}}
 
	test -z "$ret" && return 1	# return 1 if nothing has been found
	echo $ret
} #}}}
 
# Use configuration files in this directory
test -z $etc && etc="/etc/paludis"	
 
# Source make.conf for static variables
source "$etc/make.conf"
 
# Set CC (TODO: see below)
if [[ -z $NCC ]]; then
	CC="$(append=0 parseconfig $etc/cc.conf)" || die "error setting CC"
else
	CC=$NCC
fi
 
# Set CXX
case $CC in
	"gcc"|"tcc")	CXX="g++" ;;
	"icc")			CXX="icpc"; LD="xild"; AR="xiar" ;;
	*)				die "error setting CXX" ;;
esac
 
if [ -n $NCXX ]; then
	CXX=$NCXX
fi
 
if [ -n $NLD ]; then
	LD=$NLD
fi
 
if [ -n $NAR ]; then
	AR=$NAR
fi
 
# Set (C|CXX|LD)FLAGS #{{{
# TODO: maybe it's possible to put that in a function?
 
if [[ -z $NCFLAGS ]]; then
	CFLAGS="$(append=1 parseconfig $etc/${CC}flags.conf)" || die "error setting CFLAGS"
else
	CFLAGS=$NCFLAGS
fi
 
if [[ -z $NCXXFLAGS ]]; then
	CXXFLAGS="${CFLAGS} $(append=1 parseconfig $etc/${CC}xxflags.conf)" || CXXFLAGS=${CFLAGS}
else
	CXXFLAGS=$NCXXFLAGS
fi
 
if [[ -z "$NLDFLAGS" ]]; then
	LDFLAGS="$(append=1 parseconfig $etc/ldflags.conf)" || die "error setting LDFLAGS"
else
	LDFLAGS=$NLDFLAGS
fi #}}}
 
# vim: set ts=4 sw=4 tw=0 noet: