[metaconfig.git] / dist / U / mallocsrc.U

?RCS: $Id: mallocsrc.U 1 2006-08-24 12:32:52Z rmanfredi $
?RCS:
?RCS: Copyright (c) 1991-1997, 2004-2006, 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 4.0.
?RCS:
?RCS: $Log: mallocsrc.U,v $
?RCS: Revision 3.0.1.2  1997/02/28  16:10:26  ram
?RCS: patch61: added support for Free_t, the type of free()
?RCS: patch61: replaced .o with $_o all over the place
?RCS:
?RCS: Revision 3.0.1.1  1994/05/06  15:10:46  ram
?RCS: patch23: added support for MYMALLOC, mainly  for perl5 (ADO)
?RCS:
?RCS: Revision 3.0  1993/08/18  12:09:12  ram
?RCS: Baseline for dist 3.0 netwide release.
?RCS:
?MAKE:mallocsrc mallocobj usemymalloc malloctype d_mymalloc \
	freetype: Myread \
	Oldconfig package Guess Setvar rm cat +cc +ccflags Findhdr \
	i_malloc i_stdlib sed libs _o ptrsize
?MAKE:	-pick add $@ %<
?X: Put near top so that other tests don't erroneously include
?X: -lmalloc.  --AD  22 June 1998
?Y:TOP
?S:usemymalloc:
?S:	This variable contains y if the malloc that comes with this package
?S:	is desired over the system's version of malloc.  People often include
?S:	special versions of malloc for effiency, but such versions are often
?S:	less portable.  See also mallocsrc and mallocobj.
?S:	If this is 'y', then -lmalloc is removed from $libs.
?S:.
?S:mallocsrc:
?S:	This variable contains the name of the malloc.c that comes with
?S:	the package, if that malloc.c is preferred over the system malloc.
?S:	Otherwise the value is null.  This variable is intended for generating
?S:	Makefiles.
?S:.
?S:d_mymalloc:
?S:	This variable conditionally defines MYMALLOC in case other parts
?S:	of the source want to take special action if MYMALLOC is used.
?S:	This may include different sorts of profiling or error detection.
?S:.
?S:mallocobj:
?S:	This variable contains the name of the malloc.o that this package
?S:	generates, if that malloc.o is preferred over the system malloc.
?S:	Otherwise the value is null.  This variable is intended for generating
?S:	Makefiles.  See mallocsrc.
?S:.
?S:freetype:
?S:	This variable contains the return type of free().  It is usually
?S: void, but occasionally int.
?S:.
?S:malloctype:
?S:	This variable contains the kind of ptr returned by malloc and realloc.
?S:.
?C:Free_t:
?C:	This variable contains the return type of free().  It is usually
?C: void, but occasionally int.
?C:.
?C:Malloc_t (MALLOCPTRTYPE):
?C:	This symbol is the type of pointer returned by malloc and realloc.
?C:.
?H:#define Malloc_t $malloctype			/**/
?H:#define Free_t $freetype			/**/
?H:.
?C:MYMALLOC:
?C:	This symbol, if defined, indicates that we're using our own malloc.
?C:.
?H:#$d_mymalloc MYMALLOC			/**/
?H:.
?LINT:change libs
?X: Cannot test for mallocsrc; it is the unit's name and there is a bug in
?X: the interpreter which defines all the names, even though they are not used.
@if mallocobj
: determine which malloc to compile in
echo " "
case "$usemymalloc" in
[yY]*|true|$define) dflt='y' ;;
[nN]*|false|$undef) dflt='n' ;;
*)
	case "$ptrsize" in
	4) dflt='y' ;;
	*) dflt='n' ;;
	esac
	;;
esac
rp="Do you wish to attempt to use the malloc that comes with $package?"
. ./myread
usemymalloc="$ans"
case "$ans" in
y*|true)
	usemymalloc='y'
	mallocsrc='malloc.c'
	mallocobj="malloc$_o"
	d_mymalloc="$define"
?X:	Maybe libs.U should be dependent on mallocsrc.U, but then
?X:	most packages that use dist probably don't supply their own
?X:	malloc, so this is probably an o.k. comprpomise
	case "$libs" in
	*-lmalloc*)
		: Remove malloc from list of libraries to use
		echo "Removing unneeded -lmalloc from library list" >&4
		set `echo X $libs | $sed -e 's/-lmalloc / /' -e 's/-lmalloc$//'`
		shift
		libs="$*"
		echo "libs = $libs" >&4
		;;
	esac
	;;
*)
	usemymalloc='n'
	mallocsrc=''
	mallocobj=''
	d_mymalloc="$undef"
	;;
esac

@end
@if MALLOCPTRTYPE || Malloc_t || Free_t
: compute the return types of malloc and free
echo " "
$cat >malloc.c <<END
#$i_malloc I_MALLOC
#$i_stdlib I_STDLIB
#include <stdio.h>
#include <sys/types.h>
#ifdef I_MALLOC
#include <malloc.h>
#endif
#ifdef I_STDLIB
#include <stdlib.h>
#endif
#ifdef TRY_MALLOC
void *malloc();
#endif
#ifdef TRY_FREE
void free();
#endif
END
@if MALLOCPTRTYPE || Malloc_t
case "$malloctype" in
'')
	if $cc $ccflags -c -DTRY_MALLOC malloc.c >/dev/null 2>&1; then
		malloctype='void *'
	else
		malloctype='char *'
	fi
	;;
esac
echo "Your system wants malloc to return '$malloctype', it would seem." >&4
@end

@if Free_t
case "$freetype" in
'')
	if $cc $ccflags -c -DTRY_FREE malloc.c >/dev/null 2>&1; then
		freetype='void'
	else
		freetype='int'
	fi
	;;
esac
echo "Your system uses $freetype free(), it would seem." >&4
@end
$rm -f malloc.[co]
@end
Commit	Line	Data
d8875586 MBT	1	?RCS: $Id: mallocsrc.U 1 2006-08-24 12:32:52Z rmanfredi $
	2	?RCS:
	3	?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi
	4	?RCS:
	5	?RCS: You may redistribute only under the terms of the Artistic Licence,
	6	?RCS: as specified in the README file that comes with the distribution.
	7	?RCS: You may reuse parts of this distribution only within the terms of
	8	?RCS: that same Artistic Licence; a copy of which may be found at the root
	9	?RCS: of the source tree for dist 4.0.
	10	?RCS:
	11	?RCS: $Log: mallocsrc.U,v $
	12	?RCS: Revision 3.0.1.2 1997/02/28 16:10:26 ram
	13	?RCS: patch61: added support for Free_t, the type of free()
	14	?RCS: patch61: replaced .o with $_o all over the place
	15	?RCS:
	16	?RCS: Revision 3.0.1.1 1994/05/06 15:10:46 ram
	17	?RCS: patch23: added support for MYMALLOC, mainly for perl5 (ADO)
	18	?RCS:
	19	?RCS: Revision 3.0 1993/08/18 12:09:12 ram
	20	?RCS: Baseline for dist 3.0 netwide release.
	21	?RCS:
	22	?MAKE:mallocsrc mallocobj usemymalloc malloctype d_mymalloc \
	23	freetype: Myread \
	24	Oldconfig package Guess Setvar rm cat +cc +ccflags Findhdr \
	25	i_malloc i_stdlib sed libs _o ptrsize
	26	?MAKE: -pick add $@ %<
	27	?X: Put near top so that other tests don't erroneously include
	28	?X: -lmalloc. --AD 22 June 1998
	29	?Y:TOP
	30	?S:usemymalloc:
	31	?S: This variable contains y if the malloc that comes with this package
	32	?S: is desired over the system's version of malloc. People often include
	33	?S: special versions of malloc for effiency, but such versions are often
	34	?S: less portable. See also mallocsrc and mallocobj.
	35	?S: If this is 'y', then -lmalloc is removed from $libs.
	36	?S:.
	37	?S:mallocsrc:
	38	?S: This variable contains the name of the malloc.c that comes with
	39	?S: the package, if that malloc.c is preferred over the system malloc.
	40	?S: Otherwise the value is null. This variable is intended for generating
	41	?S: Makefiles.
	42	?S:.
	43	?S:d_mymalloc:
	44	?S: This variable conditionally defines MYMALLOC in case other parts
	45	?S: of the source want to take special action if MYMALLOC is used.
	46	?S: This may include different sorts of profiling or error detection.
	47	?S:.
	48	?S:mallocobj:
	49	?S: This variable contains the name of the malloc.o that this package
	50	?S: generates, if that malloc.o is preferred over the system malloc.
	51	?S: Otherwise the value is null. This variable is intended for generating
	52	?S: Makefiles. See mallocsrc.
	53	?S:.
	54	?S:freetype:
	55	?S: This variable contains the return type of free(). It is usually
	56	?S: void, but occasionally int.
	57	?S:.
	58	?S:malloctype:
	59	?S: This variable contains the kind of ptr returned by malloc and realloc.
	60	?S:.
	61	?C:Free_t:
	62	?C: This variable contains the return type of free(). It is usually
	63	?C: void, but occasionally int.
	64	?C:.
65	?C:Malloc_t (MALLOCPTRTYPE):
66	?C: This symbol is the type of pointer returned by malloc and realloc.
67	?C:.
68	?H:#define Malloc_t $malloctype /**/
69	?H:#define Free_t $freetype /**/
70	?H:.
71	?C:MYMALLOC:
72	?C: This symbol, if defined, indicates that we're using our own malloc.
73	?C:.
74	?H:#$d_mymalloc MYMALLOC /**/
75	?H:.
76	?LINT:change libs
77	?X: Cannot test for mallocsrc; it is the unit's name and there is a bug in
78	?X: the interpreter which defines all the names, even though they are not used.
79	@if mallocobj
80	: determine which malloc to compile in
81	echo " "
82	case "$usemymalloc" in
83	[yY]*\|true\|$define) dflt='y' ;;
84	[nN]*\|false\|$undef) dflt='n' ;;
85	*)
86	case "$ptrsize" in
87	4) dflt='y' ;;
88	*) dflt='n' ;;
89	esac
90	;;
91	esac
92	rp="Do you wish to attempt to use the malloc that comes with $package?"
93	. ./myread
94	usemymalloc="$ans"
95	case "$ans" in
96	y*\|true)
97	usemymalloc='y'
98	mallocsrc='malloc.c'
99	mallocobj="malloc$_o"
100	d_mymalloc="$define"
101	?X: Maybe libs.U should be dependent on mallocsrc.U, but then
102	?X: most packages that use dist probably don't supply their own
103	?X: malloc, so this is probably an o.k. comprpomise
104	case "$libs" in
105	-lmalloc)
106	: Remove malloc from list of libraries to use
107	echo "Removing unneeded -lmalloc from library list" >&4
108	set `echo X $libs \| $sed -e 's/-lmalloc / /' -e 's/-lmalloc$//'`
109	shift
110	libs="$*"
111	echo "libs = $libs" >&4
112	;;
113	esac
114	;;
115	*)
116	usemymalloc='n'
117	mallocsrc=''
118	mallocobj=''
119	d_mymalloc="$undef"
120	;;
121	esac
122
123	@end
124	@if MALLOCPTRTYPE \|\| Malloc_t \|\| Free_t
125	: compute the return types of malloc and free
126	echo " "
127	$cat >malloc.c <<END
128	#$i_malloc I_MALLOC
129	#$i_stdlib I_STDLIB
130	#include <stdio.h>
131	#include <sys/types.h>
132	#ifdef I_MALLOC
133	#include <malloc.h>
134	#endif
135	#ifdef I_STDLIB
136	#include <stdlib.h>
137	#endif
138	#ifdef TRY_MALLOC
139	void *malloc();
140	#endif
141	#ifdef TRY_FREE
142	void free();
143	#endif
144	END
145	@if MALLOCPTRTYPE \|\| Malloc_t
146	case "$malloctype" in
147	'')
148	if $cc $ccflags -c -DTRY_MALLOC malloc.c >/dev/null 2>&1; then
149	malloctype='void *'
150	else
151	malloctype='char *'
152	fi
153	;;
154	esac
155	echo "Your system wants malloc to return '$malloctype', it would seem." >&4
156	@end
157
158	@if Free_t
159	case "$freetype" in
160	'')
161	if $cc $ccflags -c -DTRY_FREE malloc.c >/dev/null 2>&1; then
162	freetype='void'
163	else
164	freetype='int'
165	fi
166	;;
167	esac
168	echo "Your system uses $freetype free(), it would seem." >&4
169	@end
170	$rm -f malloc.[co]
171	@end