[metaconfig.git] / U / perl / Extensions.U

?RCS: $Id: Extensions.U,v$
?RCS:
?RCS: Copyright (c) 1996-1998, Andy Dougherty
?RCS:
?RCS: You may distribute under the terms of either the GNU General Public
?RCS: License or the Artistic License, as specified in the README file.
?RCS:
?RCS: $Log: Extensions.U,v $
?RCS:
?MAKE:known_extensions extensions dynamic_ext static_ext nonxs_ext \
	useposix useopcode : \
	Myread hint usedl d_sem d_socket i_db i_dbm i_rpcsvcdbm i_gdbm \ 
	i_ndbm usethreads useithreads package test cat rsrc \
	d_msg d_shm osname use64bitint i_langinfo d_nl_langinfo \
	libs
?MAKE:	-pick add $@ %<
?Y:BOTTOM
?S:known_extensions:
?S:	This variable holds a list of all XS extensions included in 
?S:	the package.
?S:.
?S:dynamic_ext:
?S:	This variable holds a list of XS extension files we want to
?S:	link dynamically into the package.  It is used by Makefile.
?S:.
?S:static_ext:
?S:	This variable holds a list of XS extension files we want to
?S:	link statically into the package.  It is used by Makefile.
?S:.
?S:nonxs_ext:
?S:	This variable holds a list of all non-xs extensions included
?S:	in the package.  All of them will be built.
?S:.
?S:extensions:
?S:	This variable holds a list of all extension files (both XS and
?S:	non-xs linked into the package.  It is propagated to Config.pm
?S:	and is typically used to test whether a particular extesion 
?S:	is available.
?S:.
?S:useposix:
?S:	This variable holds either 'true' or 'false' to indicate
?S:	whether the POSIX extension should be used.  The sole
?S:	use for this currently is to allow an easy mechanism
?S:	for hints files to indicate that POSIX will not compile
?S:	on a particular system.
?S:.
?S:useopcode:
?S:	This variable holds either 'true' or 'false' to indicate
?S:	whether the Opcode extension should be used.  The sole
?S:	use for this currently is to allow an easy mechanism
?S:	for users to skip the Opcode extension from the Configure
?S:	command line.
?S:.
?T:xxx avail_ext tdir nonxs_extensions find_extensions
?INIT:: set useposix=false in your hint file to disable the POSIX extension.
?INIT:useposix=true
?INIT:: set useopcode=false in your hint file to disable the Opcode extension.
?INIT:useopcode=true
echo " "
echo "Looking for extensions..." >&4
: If we are using the old config.sh, known_extensions may contain
: old or inaccurate or duplicate values.
known_extensions=''
nonxs_extensions=''
: We do not use find because it might not be available.
: We do not just use MANIFEST because the user may have dropped
: some additional extensions into the source tree and expect them
: to be built.

: Function to recursively find available extensions, ignoring DynaLoader
: NOTE: recursion limit of 10 to prevent runaway in case of symlink madness
find_extensions='
    for xxx in *; do
       case "$xxx" in
           DynaLoader|dynaload) ;;
           *)
           if $test -f $xxx/$xxx.xs; then
               known_extensions="$known_extensions $1$xxx";
           elif $test -f $xxx/Makefile.PL; then
               nonxs_extensions="$nonxs_extensions $1$xxx";
           else
               if $test -d $xxx -a $# -lt 10; then
                   set $1$xxx/ $*;
                   cd $xxx;
                   eval $find_extensions;
                   cd ..;
                   shift;
               fi;
           fi
           ;;
       esac;
    done'
tdir=`pwd`
cd $rsrc/ext
set X
shift
eval $find_extensions
# Special case:  Add in threads/shared since it is not picked up by the
# recursive find above (and adding in general recursive finding breaks
# SDBM_File/sdbm).  A.D.  10/25/2001.
known_extensions="$known_extensions threads/shared"
set X $nonxs_extensions
shift
nonxs_extensions="$*"
set X $known_extensions
shift
known_extensions="$*"
cd $tdir

: Now see which are supported on this system.
?X: avail_ext lists available XS extensions.
avail_ext=''
for xxx in $known_extensions ; do
	case "$xxx" in
?X: Handle possible DOS 8.3 filename and case alterations
	DB_File|db_file)
		case "$i_db" in
		$define) avail_ext="$avail_ext $xxx" ;;
		esac
		;;
	GDBM_File|gdbm_fil)
		case "$i_gdbm" in 
		$define) avail_ext="$avail_ext $xxx" ;;
		esac
		;;
	I18N/Langinfo|i18n_lan)
		case "$i_langinfo$d_nl_langinfo" in 
		$define$define) avail_ext="$avail_ext $xxx" ;;
		esac
		;;
	NDBM_File|ndbm_fil)
		case "$i_ndbm" in
		$define)
		    case "$osname-$use64bitint" in
		    cygwin-*|hpux-define)
			case "$libs" in
			*-lndbm*) avail_ext="$avail_ext $xxx" ;;
			esac
			;;
		    *) avail_ext="$avail_ext $xxx" ;;
		    esac
		    ;;
		esac
		;;
	ODBM_File|odbm_fil) 
		case "${i_dbm}${i_rpcsvcdbm}" in
		*"${define}"*)
		    case "$osname-$use64bitint" in
		    cygwin-*|hpux-define)
			case "$libs" in
			*-ldbm*) avail_ext="$avail_ext $xxx" ;;
			esac
			;;
		    *) avail_ext="$avail_ext $xxx" ;;
		    esac
		    ;;
		esac
		;;
	POSIX|posix)
		case "$useposix" in
		true|define|y) avail_ext="$avail_ext $xxx" ;;
		esac
		;;
	Opcode|opcode)
		case "$useopcode" in
		true|define|y) avail_ext="$avail_ext $xxx" ;;
		esac
		;;
	Socket|socket)
		case "$d_socket" in 
		true|$define|y) avail_ext="$avail_ext $xxx" ;;
		esac
		;;
	Sys/Syslog|sys/syslog)
		: XXX syslog requires socket
		case "$d_socket" in 
		true|$define|y) avail_ext="$avail_ext $xxx" ;;
		esac
		;;
	Thread|thread)
                case "$usethreads" in
                true|$define|y)
                        case "$useithreads" in
                        $undef|false|[nN]*) avail_ext="$avail_ext $xxx" ;;
                        esac
		esac
		;;
	threads|threads/shared)
                case "$usethreads" in
                true|$define|y)
                        case "$useithreads" in
                        $define|true|[yY]*) avail_ext="$avail_ext $xxx" ;;
                        esac
		esac
		;;
	IPC/SysV|ipc/sysv)
		: XXX Do we need a useipcsysv variable here
		case "${d_msg}${d_sem}${d_shm}" in 
		*"${define}"*) avail_ext="$avail_ext $xxx" ;;
		esac
		;;
	*)	avail_ext="$avail_ext $xxx"
		;;
	esac
done

set X $avail_ext
shift
avail_ext="$*"

: Now see which nonxs extensions are supported on this system.
: For now assume all are.
nonxs_ext=''
for xxx in $nonxs_extensions ; do
	case "$xxx" in
	*)	nonxs_ext="$nonxs_ext $xxx"
		;;
	esac
done

set X $nonxs_ext
shift
nonxs_ext="$*"

case $usedl in
$define)
	$cat <<EOM
A number of extensions are supplied with $package.  You may choose to
compile these extensions for dynamic loading (the default), compile
them into the $package executable (static loading), or not include
them at all.  Answer "none" to include no extensions.
Note that DynaLoader is always built and need not be mentioned here.

EOM
	case "$dynamic_ext" in
	'') dflt="$avail_ext" ;;
	*)	dflt="$dynamic_ext"
		# Perhaps we are reusing an old out-of-date config.sh.
		case "$hint" in
		previous)
			if test X"$dynamic_ext" != X"$avail_ext"; then
				$cat <<EOM
NOTICE:  Your previous config.sh list may be incorrect. 
The extensions now available to you are 
	${avail_ext}
but the default list from your previous config.sh is
	${dynamic_ext} 

EOM
			fi
			;;
		esac
		;;
	esac
	case "$dflt" in
	'')	dflt=none;;
	esac
	rp="What extensions do you wish to load dynamically?"
	. ./myread
	case "$ans" in
?X: Use ' ' so a subsequent Configure will preserve that value.
	none) dynamic_ext=' ' ;;
	*) dynamic_ext="$ans" ;;
	esac

	case "$static_ext" in
	'')
		: Exclude those already listed in dynamic linking
		dflt=''
		for xxx in $avail_ext; do
			case " $dynamic_ext " in
			*" $xxx "*) ;;
			*) dflt="$dflt $xxx" ;;
			esac
		done
		set X $dflt
		shift
		dflt="$*"
		;;
	*)  dflt="$static_ext" 
		;;
	esac

	case "$dflt" in
	'')	dflt=none;;
	esac
	rp="What extensions do you wish to load statically?"
	. ./myread
	case "$ans" in
?X: Use ' ' so a subsequent Configure will preserve that value.
	none) static_ext=' ' ;;
	*) static_ext="$ans" ;;
	esac
	;;
*)
	$cat <<EOM
A number of extensions are supplied with $package.  Answer "none" 
to include no extensions. 
Note that DynaLoader is always built and need not be mentioned here.

EOM
	case "$static_ext" in
	'') dflt="$avail_ext" ;;
	*)	dflt="$static_ext"
		# Perhaps we are reusing an old out-of-date config.sh.
		case "$hint" in
		previous)
			if test X"$static_ext" != X"$avail_ext"; then
				$cat <<EOM
NOTICE:  Your previous config.sh list may be incorrect. 
The extensions now available to you are 
	${avail_ext}
but the default list from your previous config.sh is
	${static_ext} 

EOM
			fi
			;;
		esac
		;;
	esac
	: Exclude those that are not xs extensions
	case "$dflt" in
	'')	dflt=none;;
	esac
	rp="What extensions do you wish to include?"
	. ./myread
	case "$ans" in
?X: Use ' ' so a subsequent Configure will preserve that value.
	none) static_ext=' ' ;;
	*) static_ext="$ans" ;;
	esac
	;;
esac

set X $dynamic_ext $static_ext $nonxs_ext
shift
extensions="$*"
Commit	Line	Data
959f3c4c JH	1	?RCS: $Id: Extensions.U,v$
	2	?RCS:
	3	?RCS: Copyright (c) 1996-1998, Andy Dougherty
	4	?RCS:
	5	?RCS: You may distribute under the terms of either the GNU General Public
	6	?RCS: License or the Artistic License, as specified in the README file.
	7	?RCS:
	8	?RCS: $Log: Extensions.U,v $
	9	?RCS:
	10	?MAKE:known_extensions extensions dynamic_ext static_ext nonxs_ext \
	11	useposix useopcode : \
	12	Myread hint usedl d_sem d_socket i_db i_dbm i_rpcsvcdbm i_gdbm \
4a2f2b60	13	i_ndbm usethreads useithreads package test cat rsrc \
d0abe53c	14	d_msg d_shm osname use64bitint i_langinfo d_nl_langinfo \
d12857d9	15	libs
959f3c4c JH	16	?MAKE: -pick add $@ %<
	17	?Y:BOTTOM
	18	?S:known_extensions:
	19	?S: This variable holds a list of all XS extensions included in
	20	?S: the package.
	21	?S:.
	22	?S:dynamic_ext:
	23	?S: This variable holds a list of XS extension files we want to
	24	?S: link dynamically into the package. It is used by Makefile.
	25	?S:.
	26	?S:static_ext:
	27	?S: This variable holds a list of XS extension files we want to
	28	?S: link statically into the package. It is used by Makefile.
	29	?S:.
	30	?S:nonxs_ext:
	31	?S: This variable holds a list of all non-xs extensions included
	32	?S: in the package. All of them will be built.
	33	?S:.
	34	?S:extensions:
	35	?S: This variable holds a list of all extension files (both XS and
	36	?S: non-xs linked into the package. It is propagated to Config.pm
	37	?S: and is typically used to test whether a particular extesion
	38	?S: is available.
	39	?S:.
	40	?S:useposix:
	41	?S: This variable holds either 'true' or 'false' to indicate
	42	?S: whether the POSIX extension should be used. The sole
	43	?S: use for this currently is to allow an easy mechanism
	44	?S: for hints files to indicate that POSIX will not compile
	45	?S: on a particular system.
	46	?S:.
	47	?S:useopcode:
	48	?S: This variable holds either 'true' or 'false' to indicate
	49	?S: whether the Opcode extension should be used. The sole
	50	?S: use for this currently is to allow an easy mechanism
	51	?S: for users to skip the Opcode extension from the Configure
	52	?S: command line.
	53	?S:.
	54	?T:xxx avail_ext tdir nonxs_extensions find_extensions
	55	?INIT:: set useposix=false in your hint file to disable the POSIX extension.
	56	?INIT:useposix=true
	57	?INIT:: set useopcode=false in your hint file to disable the Opcode extension.
	58	?INIT:useopcode=true
	59	echo " "
	60	echo "Looking for extensions..." >&4
	61	: If we are using the old config.sh, known_extensions may contain
	62	: old or inaccurate or duplicate values.
	63	known_extensions=''
	64	nonxs_extensions=''
	65	: We do not use find because it might not be available.
	66	: We do not just use MANIFEST because the user may have dropped
	67	: some additional extensions into the source tree and expect them
	68	: to be built.
	69
	70	: Function to recursively find available extensions, ignoring DynaLoader
	71	: NOTE: recursion limit of 10 to prevent runaway in case of symlink madness
	72	find_extensions='
	73	for xxx in *; do
	74	case "$xxx" in
	75	DynaLoader\|dynaload) ;;
	76	*)
	77	if $test -f $xxx/$xxx.xs; then
	78	known_extensions="$known_extensions $1$xxx";
	79	elif $test -f $xxx/Makefile.PL; then
80	nonxs_extensions="$nonxs_extensions $1$xxx";
81	else
82	if $test -d $xxx -a $# -lt 10; then
83	set $1$xxx/ $*;
84	cd $xxx;
85	eval $find_extensions;
86	cd ..;
87	shift;
84e2cbfd	88	fi;
959f3c4c JH	89	fi
959f3c4c JH	90	;;
84e2cbfd	91	esac;
959f3c4c JH	92	done'
	93	tdir=`pwd`
	94	cd $rsrc/ext
86a2f2c4	95	set X
959f3c4c JH	96	shift
959f3c4c JH	97	eval $find_extensions
660a2481 JH	98	# Special case: Add in threads/shared since it is not picked up by the
	99	# recursive find above (and adding in general recursive finding breaks
	100	# SDBM_File/sdbm). A.D. 10/25/2001.
	101	known_extensions="$known_extensions threads/shared"
959f3c4c JH	102	set X $nonxs_extensions
	103	shift
	104	nonxs_extensions="$*"
	105	set X $known_extensions
	106	shift
	107	known_extensions="$*"
	108	cd $tdir
	109
	110	: Now see which are supported on this system.
	111	?X: avail_ext lists available XS extensions.
	112	avail_ext=''
	113	for xxx in $known_extensions ; do
	114	case "$xxx" in
	115	?X: Handle possible DOS 8.3 filename and case alterations
	116	DB_File\|db_file)
	117	case "$i_db" in
	118	$define) avail_ext="$avail_ext $xxx" ;;
	119	esac
	120	;;
	121	GDBM_File\|gdbm_fil)
	122	case "$i_gdbm" in
	123	$define) avail_ext="$avail_ext $xxx" ;;
	124	esac
	125	;;
dfd712ee	126	I18N/Langinfo\|i18n_lan)
0e5a028f JH	127	case "$i_langinfo$d_nl_langinfo" in
	128	$define$define) avail_ext="$avail_ext $xxx" ;;
	129	esac
	130	;;
959f3c4c JH	131	NDBM_File\|ndbm_fil)
959f3c4c JH	132	case "$i_ndbm" in
4ee071c7	133	$define)
33b2427b	134	case "$osname-$use64bitint" in
cfdc7a7f	135	cygwin-*\|hpux-define)
4ee071c7 JH	136	case "$libs" in
	137	-lndbm) avail_ext="$avail_ext $xxx" ;;
	138	esac
	139	;;
	140	*) avail_ext="$avail_ext $xxx" ;;
	141	esac
	142	;;
959f3c4c JH	143	esac
	144	;;
	145	ODBM_File\|odbm_fil)
	146	case "${i_dbm}${i_rpcsvcdbm}" in
4ee071c7	147	"${define}")
33b2427b	148	case "$osname-$use64bitint" in
cfdc7a7f	149	cygwin-*\|hpux-define)
4ee071c7 JH	150	case "$libs" in
	151	-ldbm) avail_ext="$avail_ext $xxx" ;;
	152	esac
	153	;;
	154	*) avail_ext="$avail_ext $xxx" ;;
	155	esac
	156	;;
959f3c4c JH	157	esac
	158	;;
	159	POSIX\|posix)
	160	case "$useposix" in
	161	true\|define\|y) avail_ext="$avail_ext $xxx" ;;
	162	esac
	163	;;
	164	Opcode\|opcode)
	165	case "$useopcode" in
	166	true\|define\|y) avail_ext="$avail_ext $xxx" ;;
	167	esac
	168	;;
	169	Socket\|socket)
	170	case "$d_socket" in
	171	true\|$define\|y) avail_ext="$avail_ext $xxx" ;;
	172	esac
	173	;;
fa92de3e YST	174	Sys/Syslog\|sys/syslog)
	175	: XXX syslog requires socket
	176	case "$d_socket" in
	177	true\|$define\|y) avail_ext="$avail_ext $xxx" ;;
	178	esac
	179	;;
959f3c4c	180	Thread\|thread)
4a2f2b60 JH	181	case "$usethreads" in
	182	true\|$define\|y)
	183	case "$useithreads" in
	184	$undef\|false\|[nN]*) avail_ext="$avail_ext $xxx" ;;
	185	esac
80f8756f JH	186	esac
80f8756f JH	187	;;
4f2abfa6	188	threads\|threads/shared)
80f8756f JH	189	case "$usethreads" in
	190	true\|$define\|y)
	191	case "$useithreads" in
	192	$define\|true\|[yY]*) avail_ext="$avail_ext $xxx" ;;
	193	esac
959f3c4c JH	194	esac
	195	;;
	196	IPC/SysV\|ipc/sysv)
	197	: XXX Do we need a useipcsysv variable here
	198	case "${d_msg}${d_sem}${d_shm}" in
	199	"${define}") avail_ext="$avail_ext $xxx" ;;
	200	esac
	201	;;
	202	*) avail_ext="$avail_ext $xxx"
	203	;;
	204	esac
	205	done
	206
	207	set X $avail_ext
	208	shift
	209	avail_ext="$*"
	210
	211	: Now see which nonxs extensions are supported on this system.
	212	: For now assume all are.
	213	nonxs_ext=''
	214	for xxx in $nonxs_extensions ; do
	215	case "$xxx" in
	216	*) nonxs_ext="$nonxs_ext $xxx"
	217	;;
	218	esac
	219	done
	220
	221	set X $nonxs_ext
	222	shift
	223	nonxs_ext="$*"
	224
	225	case $usedl in
	226	$define)
	227	$cat <<EOM
	228	A number of extensions are supplied with $package. You may choose to
	229	compile these extensions for dynamic loading (the default), compile
	230	them into the $package executable (static loading), or not include
	231	them at all. Answer "none" to include no extensions.
	232	Note that DynaLoader is always built and need not be mentioned here.
	233
	234	EOM
	235	case "$dynamic_ext" in
	236	'') dflt="$avail_ext" ;;
	237	*) dflt="$dynamic_ext"
	238	# Perhaps we are reusing an old out-of-date config.sh.
	239	case "$hint" in
	240	previous)
	241	if test X"$dynamic_ext" != X"$avail_ext"; then
	242	$cat <<EOM
	243	NOTICE: Your previous config.sh list may be incorrect.
	244	The extensions now available to you are
	245	${avail_ext}
	246	but the default list from your previous config.sh is
	247	${dynamic_ext}
	248
	249	EOM
	250	fi
	251	;;
	252	esac
	253	;;
	254	esac
	255	case "$dflt" in
	256	'') dflt=none;;
	257	esac
258	rp="What extensions do you wish to load dynamically?"
259	. ./myread
260	case "$ans" in
261	?X: Use ' ' so a subsequent Configure will preserve that value.
262	none) dynamic_ext=' ' ;;
263	*) dynamic_ext="$ans" ;;
264	esac
265
266	case "$static_ext" in
267	'')
268	: Exclude those already listed in dynamic linking
269	dflt=''
270	for xxx in $avail_ext; do
271	case " $dynamic_ext " in
272	" $xxx ") ;;
273	*) dflt="$dflt $xxx" ;;
274	esac
275	done
276	set X $dflt
277	shift
278	dflt="$*"
279	;;
280	*) dflt="$static_ext"
281	;;
282	esac
283
284	case "$dflt" in
285	'') dflt=none;;
286	esac
287	rp="What extensions do you wish to load statically?"
288	. ./myread
289	case "$ans" in
290	?X: Use ' ' so a subsequent Configure will preserve that value.
291	none) static_ext=' ' ;;
292	*) static_ext="$ans" ;;
293	esac
294	;;
295	*)
296	$cat <<EOM
297	A number of extensions are supplied with $package. Answer "none"
298	to include no extensions.
299	Note that DynaLoader is always built and need not be mentioned here.
300
301	EOM
302	case "$static_ext" in
303	'') dflt="$avail_ext" ;;
304	*) dflt="$static_ext"
305	# Perhaps we are reusing an old out-of-date config.sh.
306	case "$hint" in
307	previous)
308	if test X"$static_ext" != X"$avail_ext"; then
309	$cat <<EOM
310	NOTICE: Your previous config.sh list may be incorrect.
311	The extensions now available to you are
312	${avail_ext}
313	but the default list from your previous config.sh is
314	${static_ext}
315
316	EOM
317	fi
318	;;
319	esac
320	;;
321	esac
322	: Exclude those that are not xs extensions
323	case "$dflt" in
324	'') dflt=none;;
325	esac
326	rp="What extensions do you wish to include?"
327	. ./myread
328	case "$ans" in
329	?X: Use ' ' so a subsequent Configure will preserve that value.
330	none) static_ext=' ' ;;
331	*) static_ext="$ans" ;;
332	esac
333	;;
334	esac
335
336	set X $dynamic_ext $static_ext $nonxs_ext
337	shift
338	extensions="$*"
339