?RCS: $Id: ccflags.U,v 3.0.1.3 1993/09/13 15:58:29 ram Exp $
?RCS:
?RCS: Copyright (c) 1991-1993, Raphael Manfredi
?RCS: 
?RCS: You may redistribute only under the terms of the Artistic Licence,
?RCS: as specified in the README file that comes with the distribution.
?RCS: You may reuse parts of this distribution only within the terms of
?RCS: that same Artistic Licence; a copy of which may be found at the root
?RCS: of the source tree for dist 3.0.
?RCS:
?RCS: $Log: ccflags.U,v $
?RCS: Revision 3.0.1.3  1993/09/13  15:58:29  ram
?RCS: patch10: explicitely mention -DDEBUG just in case they need it (WAD)
?RCS: patch10: removed all the "tans" variable usage (WAD)
?RCS:
?RCS: Revision 3.0.1.2  1993/08/27  14:39:38  ram
?RCS: patch7: added support for OSF/1 machines
?RCS:
?RCS: Revision 3.0.1.1  1993/08/25  14:00:24  ram
?RCS: patch6: added defaults for cppflags, ccflags and ldflags
?RCS:
?RCS: Revision 3.0  1993/08/18  12:05:31  ram
?RCS: Baseline for dist 3.0 netwide release.
?RCS:
?MAKE:ccflags ldflags lkflags cppflags optimize: test cat Myread Guess \
	Oldconfig cc gccversion mips_type +usrinc package contains
?MAKE:	-pick add $@ %<
?S:ccflags:
?S:	This variable contains any additional C compiler flags desired by
?S:	the user.  It is up to the Makefile to use this.
?S:.
?S:cppflags:
?S:	This variable holds the flags that will be passed to the C pre-
?S:	processor. It is up to the Makefile to use it.
?S:.
?S:optimize:
?S:	This variable contains any optimizer/debugger flag that should be used.
?S:	It is up to the Makefile to use it.
?S:.
?S:ldflags:
?S:	This variable contains any additional C loader flags desired by
?S:	the user.  It is up to the Makefile to use this.
?S:.
?S:lkflags:
?S:	This variable contains any additional C partial linker flags desired by
?S:	the user.  It is up to the Makefile to use this.
?S:.
?T:inctest thisincl xxx flag inclwanted
?D:cppflags=''
?D:ccflags=''
?D:ldflags=''
?INIT:: no include file wanted by default
?INIT:inclwanted=''
?INIT:
: determine optimize, if desired, or use for debug flag also
case "$optimize" in
' ') dflt="none";;
'') dflt="-g";;
*) dflt="$optimize";;
esac
$cat <<EOH

Some C compilers have problems with their optimizers, by default, $package
compiles with the -O flag to use the optimizer.  Alternately, you might want
to use the symbolic debugger, which uses the -g flag (on traditional Unix
systems).  Either flag can be specified here.  To use neither flag, specify
the word "none".

EOH
rp="What optimizer/debugger flag should be used?"
. ./myread
optimize="$ans"
case "$optimize" in
'none') optimize=" ";;
esac

dflt=''
case "$ccflags" in
'')	case "$cc" in
	*gcc*) if $test "$gccversion" = "1"; then
			dflt='-fpcc-struct-return'
		   fi ;;
	esac
	case "$optimize" in
	*-g*) dflt="$dflt -DDEBUGGING";;
	esac
?X: check for POSIXized ISC
	case "$cc" in
	*gcc*)	if test -d /etc/conf/kconfig.d &&
		  $contains _POSIX_VERSION $usrinc/sys/unistd.h >/dev/null 2>&1
		then
			dflt="$dflt -posix"
		fi
		;;
	esac
	;;
esac

?X: In USG mode, a MIPS system may need some BSD includes
case "$mips_type" in
*BSD*) ;;
'') ;;
*) inclwanted="$inclwanted $usrinc/bsd";;
esac
for thisincl in $inclwanted; do
	if $test -d $thisincl; then
		if $test x$thisincl != x$usrinc; then
			case "$dflt" in
			*$thisincl*);;
			*) dflt="$dflt -I$thisincl";;
			esac
		fi
	fi
done

?X: Include test function (header, symbol)
inctest='if $contains $2 $usrinc/$1 >/dev/null 2>&1; then
	xxx=true;
elif $contains $2 $usrinc/sys/$1 >/dev/null 2>&1; then
	xxx=true;
else
	xxx=false;
fi;
if $xxx; then
	case "$dflt" in
	*$2*);;
	*) dflt="$dflt -D$2";;
	esac;
fi'

?X:
?X: SCO unix uses NO_PROTOTYPE instead of _NO_PROTO
?X: OSF/1 uses __LANGUAGE_C__ instead of LANGUAGE_C
?X:
if ./osf1; then
	set signal.h __LANGUAGE_C__; eval $inctest
else
	set signal.h LANGUAGE_C; eval $inctest
fi
set signal.h NO_PROTOTYPE; eval $inctest
set signal.h _NO_PROTO; eval $inctest

case "$dflt" in
'') dflt=none;;
esac
case "$ccflags" in
'') ;;
*) dflt="$ccflags";;
esac
$cat <<EOH

Your C compiler may want other flags.  For this question you should include
-I/whatever and -DWHATEVER flags and any other flags used by the C compiler,
but you should NOT include libraries or ld flags like -lwhatever.  If you
want $package to honor its debug switch, you should include -DDEBUGGING here.
To use no flags, specify the word "none".

Your C compiler might also need additional flags, such as -DJMPCLOBBER,
-DHIDEMYMALLOC or -DCRIPPLED_CC.
EOH
?X: strip leading space
set X $dflt
shift
dflt=${1+"$@"}
rp="Any additional cc flags?"
. ./myread
case "$ans" in
none) ccflags='';;
*) ccflags="$ans";;
esac

: the following weeds options from ccflags that are of no interest to cpp
cppflags="$ccflags"
case "$cc" in
*gcc*)  case "$gccversion" in
	1) cppflags="$cppflags -D__GNUC__" ;;
	esac
	;;
esac
case "$mips_type" in
'');;
*BSD*) cppflags="$cppflags -DSYSTYPE_BSD43";;
esac
case "$cppflags" in
'');;
*)  set X $cppflags
	cppflags=''
	for flag
	do
		case $flag in
		-D*|-I*|-traditional|-ansi|-nostdinc|-posix|-Xp) cppflags="$cppflags $flag";;
		esac
	done
	case "$cppflags" in
	*-*)  echo "(C preprocessor flags: $cppflags)";;
	esac
	;;
esac

: flags used in final linking phase
case "$ldflags" in
'') if venix; then
		dflt='-i -z'
	else
		dflt='none'
	fi
	;;
*) dflt="$ldflags";;
esac
echo " "
rp="Any additional ld flags (NOT including libraries)?"
. ./myread
case "$ans" in
none) ldflags='';;
*) ldflags="$ans";;
esac
rmlist="$rmlist pdp11"

@if lkflags
: partial linking may need other flags
case "$lkflags" in
'') case "$ldflags" in
	'') dflt='none';;
	*) dflt="$ldflags";;
	esac;;
*) dflt="$lkflags";;
esac
echo " "
rp="Partial linking flags to be used (NOT including -r)?"
. ./myread
case "$ans" in
none) lkflags='';;
*)    lkflags="$ans";;
esac

@end