?RCS: $Id: Cppsym.U,v 3.0.1.5 1995/05/12 11:59:11 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: Cppsym.U,v $
?RCS: Revision 3.0.1.5  1995/05/12  11:59:11  ram
?RCS: patch54: split awk command onto two lines for older awks (ADO)
?RCS:
?RCS: Revision 3.0.1.4  1995/01/11  14:55:57  ram
?RCS: patch45: new cc vs. cpp symbol checking suggested by JHI
?RCS: patch45: added more cpp symbols (JHI)
?RCS:
?RCS: Revision 3.0.1.3  1994/10/29  15:51:32  ram
?RCS: patch36: added ?F: line for metalint file checking
?RCS: patch36: new symbols ardent and titan (ADO)
?RCS:
?RCS: Revision 3.0.1.2  1994/06/20  06:53:32  ram
?RCS: patch30: extended cpp symbol lookup list (JHI)
?RCS: patch30: renamed attrlist symbol into al for brevity
?RCS:
?RCS: Revision 3.0.1.1  1993/12/15  08:14:14  ram
?RCS: patch15: added new cpp symbols __bsdi__ and BSD_NET2
?RCS:
?RCS: Revision 3.0  1993/08/18  12:04:50  ram
?RCS: Baseline for dist 3.0 netwide release.
?RCS:
?X: 
?X: This unit produces a shell script called Cppsym, which can be used to
?X: determine whether any in a list of symbols is defined by the C compilation
?X: chain (C preprocessor symbols plus C compiler native ones).
?X: It can determine the status of any symbol, though the symbols in $al
?X: are more easily determined.  If you want to add to $al you can do
?X: it in Myinit.U.
?X: 
?MAKE:Cppsym: eunicefix Guess cppstdin awk cat tr sed sort grep rm startsh \
	contains cppminus +cc +gccversion test comm uniq echo n c Options
?MAKE:	-pick add $@ %<
?F:./Cppsym
?T:sym list unknown status also symbols i
?V:al
?X:
?X: The symbol list is in alpha order for ease of maintenance...
?X:
?X: Lots of new symbols (mostly rummaged from gcc), courtesy of
?X: Jarkko Hietaniemi <jhi@snakemail.hut.fi> -- RAM, 06/06/94
?X:
?INIT:: list of known cpp symbols, sorted alphabetically
?INIT:al="AMIX BIT_MSF BSD BSD4_3 BSD_NET2 CMU CRAY DGUX DOLPHIN DPX2"
?INIT:al="$al GO32 GOULD_PN HP700 I386 I80960 I960 Lynx M68000 M68K MACH"
?INIT:al="$al MIPSEB MIPSEL MSDOS MTXINU MULTIMAX MVS"
?INIT:al="$al M_COFF M_I186 M_I286 M_I386 M_I8086 M_I86 M_I86SM"
?INIT:al="$al M_SYS3 M_SYS5 M_SYSIII M_SYSV M_UNIX M_XENIX"
?INIT:al="$al NeXT OCS88 OSF1 PARISC PC532 PORTAR POSIX"
?INIT:al="$al PWB R3000 RES RISC6000 RT Sun386i SVR3 SVR4"
?INIT:al="$al SYSTYPE_BSD SYSTYPE_SVR4 SYSTYPE_SYSV Tek4132 Tek4300"
?INIT:al="$al UMAXV USGr4 USGr4_2 UTEK UTS UTek UnicomPBB UnicomPBD Utek"
?INIT:al="$al VMS Xenix286"
?INIT:al="$al _AIX _AIX32 _AIX370 _AM29000 _COFF _CRAY _CX_UX _EPI"
?INIT:al="$al _IBMESA _IBMR2 _M88K _M88KBCS_TARGET"
?INIT:al="$al _MIPSEB _MIPSEL _M_COFF _M_I86 _M_I86SM _M_SYS3"
?INIT:al="$al _M_SYS5 _M_SYSIII _M_SYSV _M_UNIX _M_XENIX _NLS _PGC_ _R3000"
?INIT:al="$al _SYSTYPE_BSD _SYSTYPE_BSD43 _SYSTYPE_SVR4"
?INIT:al="$al _SYSTYPE_SYSV _SYSV3 _U370 _UNICOS"
?INIT:al="$al __386BSD__ __BIG_ENDIAN __BIG_ENDIAN__ __BSD_4_4__"
?INIT:al="$al __DGUX__ __DPX2__ __H3050R __H3050RX"
?INIT:al="$al __LITTLE_ENDIAN __LITTLE_ENDIAN__ __MACH__"
?INIT:al="$al __MIPSEB __MIPSEB__ __MIPSEL __MIPSEL__"
?INIT:al="$al __Next__ __OSF1__ __PARAGON__ __PGC__ __PWB __STDC__"
?INIT:al="$al __SVR4_2__ __UMAXV__"
?INIT:al="$al ____386BSD____ __alpha __alpha__ __amiga"
?INIT:al="$al __bsd4_2 __bsd4_2__ __bsdi__ __convex__"
?INIT:al="$al __host_mips__"
?INIT:al="$al __hp9000s200 __hp9000s300 __hp9000s400 __hp9000s500"
?INIT:al="$al __hp9000s500 __hp9000s700 __hp9000s800"
?INIT:al="$al __hppa __hpux __hp_osf __i286 __i286__ __i386 __i386__"
?INIT:al="$al __i486 __i486__ __i860 __i860__ __ibmesa __ksr1__ __linux__"
?INIT:al="$al __m68k __m68k__ __m88100__ __m88k __m88k__"
?INIT:al="$al __mc68000 __mc68000__ __mc68020 __mc68020__"
?INIT:al="$al __mc68030 __mc68030__ __mc68040 __mc68040__"
?INIT:al="$al __mc88100 __mc88100__ __mips __mips__"
?INIT:al="$al __motorola__ __osf__ __pa_risc __sparc__ __stdc__"
?INIT:al="$al __sun __sun__ __svr3__ __svr4__ __ultrix __ultrix__"
?INIT:al="$al __unix __unix__ __uxpm__ __uxps__ __vax __vax__"
?INIT:al="$al _host_mips _mips _unix"
?INIT:al="$al a29k aegis aix aixpc alliant alpha am29000 amiga ansi ardent"
?INIT:al="$al apollo ardent att386 att3b"
?INIT:al="$al bsd bsd43 bsd4_2 bsd4_3 bsd4_4 bsdi bull"
?INIT:al="$al cadmus clipper concurrent convex cray ctix"
?INIT:al="$al dmert encore gcos gcx gimpel gould"
?INIT:al="$al hbullx20 hcx host_mips hp200 hp300 hp700 hp800"
?INIT:al="$al hp9000 hp9000s300 hp9000s400 hp9000s500"
?INIT:al="$al hp9000s700 hp9000s800 hp9k8 hppa hpux"
?INIT:al="$al i186 i286 i386 i486 i8086"
?INIT:al="$al i80960 i860 iAPX286 ibm ibm032 ibmrt interdata is68k"
?INIT:al="$al ksr1 linux luna luna88k m68k m88100 m88k"
?INIT:al="$al mc300 mc500 mc68000 mc68010 mc68020 mc68030"
?INIT:al="$al mc68040 mc68060 mc68k mc68k32 mc700"
?INIT:al="$al mc88000 mc88100 merlin mert mips mvs n16"
?INIT:al="$al ncl_el ncl_mr"
?INIT:al="$al news1500 news1700 news1800 news1900 news3700"
?INIT:al="$al news700 news800 news900 ns16000 ns32000"
?INIT:al="$al ns32016 ns32332 ns32k nsc32000 os osf"
?INIT:al="$al parisc pc532 pdp11 plexus posix pyr"
?INIT:al="$al riscix riscos scs sequent sgi sinix sony sony_news"
?INIT:al="$al sonyrisc sparc sparclite spectrum stardent stratos"
?INIT:al="$al sun sun3 sun386 svr4 sysV68 sysV88"
?INIT:al="$al titan tower tower32 tower32_200 tower32_600 tower32_700"
?INIT:al="$al tower32_800 tower32_850 tss u370 u3b u3b2 u3b20 u3b200"
?INIT:al="$al u3b20d u3b5 ultrix unix unixpc unos vax venix vms"
?INIT:al="$al xenix z8000"
?INIT:
: get C preprocessor symbols handy
echo " "
$echo $n "Hmm... $c"
?X: The following used to be tr '[ - ]' ... but this was rejected by AIX 3.2
?X: since the endpoints where the same (from patch 12u8 to patch).
echo $al | $tr ' ' '\012' >Cppsym.know
$cat <<EOSS >Cppsym
$startsh
case "\$1" in
-l) list=true
	shift
	;;
esac
unknown=''
case "\$list\$#" in
1|2)
	for sym do
		if $contains "^\$1$" Cppsym.true >/dev/null 2>&1; then
			exit 0
		elif $contains "^\$1$" Cppsym.know >/dev/null 2>&1; then
			:
		else
			unknown="\$unknown \$sym"
		fi
	done
	set X \$unknown
	shift
	;;
esac
case \$# in
0) exit 1;;
esac
echo \$* | $tr ' ' '\012' | $sed -e 's/\(.*\)/\\
#ifdef \1\\
exit 0; _ _ _ _\1\\	 \1\\
#endif\\
/' >Cppsym\$\$
echo "exit 1; _ _ _" >>Cppsym\$\$
$cppstdin $cppminus <Cppsym\$\$ | $grep '^exit [01]; _ _'  >Cppsym2\$\$
case "\$list" in
true) $awk 'NF > 5 {print substr(\$6,2,100)}' <Cppsym2\$\$ ;;
*)
	sh Cppsym2\$\$
	status=\$?
	;;
esac
$rm -f Cppsym\$\$ Cppsym2\$\$
exit \$status
EOSS
chmod +x Cppsym
$eunicefix Cppsym
./Cppsym -l $al | $sort | $grep -v '^$' >Cppsym.true

: now check the C compiler for additional symbols
?X: suggested by Jarkko Hietaniemi <jhi@snakemail.hut.fi>, thanks!
$cat >ccsym <<EOS
$startsh
$cat >tmp.c <<EOF
extern int foo;
EOF
for i in \`$cc -v -c tmp.c 2>&1\`
do
	case "\$i" in
	-D*) echo "\$i" | $sed 's/^-D//';;
	-A*) $test "$gccversion" && echo "\$i" | $sed 's/^-A\(.*\)(\(.*\))/\1=\2/';;
	esac
done
$rm -f try.c
EOS
chmod +x ccsym
$eunicefix ccsym
./ccsym | $sort | $uniq >ccsym.raw
?X: canonicalize symbols for easier sort/uniq/comm usage: append =1 if no = sign
?X: the awk script must be on two lines for older awk programs, sigh! -- ADO
$awk '/\=/ { print $0; next }
	{ print $0"=1" }' ccsym.raw >ccsym.list
$awk '{ print $0"=1" }' Cppsym.true >ccsym.true
$comm -13 ccsym.true ccsym.list >ccsym.own
$comm -12 ccsym.true ccsym.list >ccsym.com
$comm -23 ccsym.true ccsym.list >ccsym.cpp
also=''
symbols='symbols'
if $test -z ccsym.raw; then
	echo "Your C compiler doesn't seem to define any symbol!" >&4
	echo " "
	echo "However, your C preprocessor defines the following ones:"
	$cat Cppsym.true
else
	if $test -s ccsym.com; then
		echo "Your C compiler and pre-processor define these symbols:"
		$sed -e 's/\(.*\)=.*/\1/' ccsym.com
		also='also '
		symbols='ones'
		$test "$silent" || sleep 1
	fi
	if $test -s ccsym.cpp; then
		$test "$also" && echo " "
		echo "Your C pre-processor ${also}defines the following $symbols:"
		$sed -e 's/\(.*\)=.*/\1/' ccsym.cpp
		also='further '
		$test "$silent" || sleep 1
	fi
	if $test -s ccsym.own; then
		$test "$also" && echo " "
		echo "Your C compiler ${also}defines the following cpp variables:"
		$sed -e 's/\(.*\)=1/\1/' ccsym.own
		$sed -e 's/\(.*\)=.*/\1/' ccsym.own | $uniq >>Cppsym.true
		$test "$silent" || sleep 1
	fi
fi
$rm -f ccsym*