rocklinux/package/base/gcc/parse-config

#!/bin/bash
# --- ROCK-COPYRIGHT-NOTE-BEGIN ---
# 
# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
# Please add additional copyright information _after_ the line containing
# the ROCK-COPYRIGHT-NOTE-END tag. Otherwise it might get removed by
# the ./scripts/Create-CopyPatch script. Do not edit this copyright text!
# 
# ROCK Linux: rock-src/package/base/gcc/parse-config
# ROCK Linux is Copyright (C) 1998 - 2006 Clifford Wolf
# 
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version. A copy of the GNU General Public
# License can be found at Documentation/COPYING.
# 
# Many people helped and are helping developing ROCK Linux. Please
# have a look at http://www.rocklinux.org/ and the Documentation/TEAM
# file for details.
# 
# --- ROCK-COPYRIGHT-NOTE-END ---
if [ $stagelevel -ge 2 -o $stagelevel -eq 1 -a $pkg != gcc ]
then

# set CC, CXX and F77 environment variables
#
for x in CC CXX F77 ; do
	eval "y=\$ROCKCFG_DEFAULT_$x"
	if [[ $y = gcc* ]] ; then
		case "$x" in
		    KCC)
			z="${archprefix}kcc ${archprefix}kcc-${y#gcc}" ;;
		    CC)
			z="${archprefix}gcc ${archprefix}gcc-${y#gcc}" ;;
		    CXX)
			z="${archprefix}g++ ${archprefix}g++-${y#gcc}" ;;
		    F77)
			z="${archprefix}gfortran ${archprefix}g77 ${archprefix}gfortran-${y#gcc} ${archprefix}g77-${y#gcc}" ;;
		esac
		export $x=${x}_not_available_in_stage_${stagelevel}
		for y in $z ; do
			[ "`type -p $y`" ] && export $x=$y
		done
	fi
done
unset x y z

if [ $stagelevel -ge 1 ] ; then
	if [[ "$xpkg" = *-32bit ]] ; then
		export CC="${CC} ${BUILD32}" CXX="${CXX} ${BUILD32}"
	elif [ "$ROCKCFG_MULTILIB" = 1 ] ; then
		export CC="${CC} ${BUILD64}" CXX="${CXX} ${BUILD64}"
	fi
fi

# Append all custom options so the gcc -V option always comes first.
# The order of most other options doesn't matter; notable exceptions
# are -L and -l (library).
var_append GCC_WRAPPER_APPEND " " "$ROCKCFG_C_FLAGS"

# Passing -I/usr{/local/}include creates a warning in gcc3 which is confusing
# some of the configure scripts and Makefiles.
#
var_insert GCC3_WRAPPER_REMOVE " " "-I/usr/include"
var_insert GCC3_WRAPPER_REMOVE " " "-I/usr/local/include"

# Compile (i.e. link) all bins statically
#
if [ "$ROCKCFG_STATIC" = 1 ]; then
	var_insert GCC_WRAPPER_APPEND " " "-static"
fi

# Use the GCC 4.x stack protector
#
if [ $pkg != glibc23 -a $pkg != glibc22 -a \
     $pkg != grub  -a $pkg != dietlibc -a $pkg != glibc ]
then
	if [ "$ROCKCFG_PKG_GCC_STACKPRO" = 1 ] ; then
		var_append GCC4_WRAPPER_APPEND " " "-fstack-protector"
	fi
fi

# Compile with no exceptions or rtti, gcc itself must support both
#
if [ "$ROCKCFG_LIMITCXX" = 1 ] && [[ $pkg != gcc* ]] ; then
	var_append CXX_WRAPPER_APPEND " " "-fno-exceptions -fno-rtti"
fi

# Use automatically precompiled C++ headers
#
if [ "$ROCKCFG_AUTOPCH" = 1 ] ; then
	[ -n "$CXX" -a -n "`type -p g++-autopch`" ] && \
		CXX="eval AUTOPCHCXX=\"$CXX\" g++-autopch"
fi

# maybe we add something more later. But imo it's better to
# let the options of KCC unmodified for gcc[23].  (Clifford)
#
if [[ $ROCKCFG_DEFAULT_KCC = gcc* ]] ; then
	if [ "$ROCKCFG_OPT" = "size" ] ; then
		var_insert KCC_WRAPPER_REMOVE " " "-O -O[0-9]"
		var_insert KCC_WRAPPER_APPEND " " "-Os"
	fi
fi

# Add the usual gcc optimization options
# Strip or add debug information
#
if [ "$ROCKCFG_DEBUG" = 0 ] ; then
	var_append GCC_WRAPPER_APPEND " " "-s"
	var_insert GCC_WRAPPER_REMOVE " " "-g*"
else
	if [[ $pkg != glibc* ]] ; then
		var_append GCC_WRAPPER_APPEND " " "-ggdb"
	fi
	var_insert GCC_WRAPPER_REMOVE " " "-s -g*"
fi

# remove other -O options from the argument list
#
if [ "$ROCKCFG_OPT" != default ] ; then
	var_insert GCC_WRAPPER_REMOVE " " "-O -O[0-9s]"
fi

case "$pkg" in
	glibc*)
		# do not mess with glibc -O options other than this
		var_insert GCC_WRAPPER_APPEND " " "-O2 -pipe"
		;;
	*)
		case "$ROCKCFG_OPT" in
			smart)
				var_insert GCC_WRAPPER_APPEND " " "-SPEED-O2 -SIZE-Os -pipe"
				var_insert GCC_WRAPPER_FILTER "|" "gawk -f $base/misc/tools-source/smartwr.awk $base/scripts/smart_db.txt -"
				;;
			bizarre)
				var_insert GCC_WRAPPER_APPEND " " "-SPEED-Os -SIZE-O2 -pipe"
				var_insert GCC_WRAPPER_FILTER "|" "gawk -f $base/misc/tools-source/smartwr.awk $base/scripts/smart_db.txt -"
				;;
			speed)
				var_insert GCC_WRAPPER_APPEND " " "-O2 -pipe"
				;;
			size)
				var_insert GCC_WRAPPER_APPEND " " "-Os -pipe"
				;;
			lazy)
				var_insert GCC_WRAPPER_APPEND " " "-O1 -pipe"
				;;
			test)
				case "$pkg" in
					gcc*|binutils*|make|bzip2|gzip|coreutils|bash*|gawk|sed)
						var_insert GCC_WRAPPER_APPEND " " "-Os -pipe"
						;;
					*)
						var_insert GCC_WRAPPER_APPEND " " "-O1 -pipe"
						;;
				esac
				;;
			default)
				;;
		esac
		;;
esac


# Add the architecture gcc optimisation options
#
if [ -f architecture/$arch/gcc-options ] ; then
	. architecture/$arch/gcc-options
fi

# Use our chroot specs file for pseudonative
#
# if [ $stagelevel -gt 2 -a "$ROCKCFG_PSEUDONATIVE" = 1 ]; then
# 	var_insert GCC_WRAPPER_INSERT " " "--specs=specs.chroot"
# fi

# register the forcefpic handler
gcc_force_fpic_handler() {
	if [ "$forcefpic" = 1 ]; then
		# echo_status "Enabling force -fPIC mechanism for gcc."
		var_insert GCC_WRAPPER_APPEND " " "-fPIC"
	fi
}
hook_add prepare 7 'gcc_force_fpic_handler'

fi # [ $stagelevel -ge 2 ]