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1?RCS: $Id: mallocsrc.U,v 3.0.1.2 1997/02/28 16:10:26 ram Exp $
2?RCS:
3?RCS: Copyright (c) 1991-1993, 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 3.0.
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 \
dcf40b7d 25 i_malloc i_stdlib sed libs _o ptrsize
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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
81echo " "
82case "$usemymalloc" in
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83[yY]*|true|$define) dflt='y' ;;
84[nN]*|false|$undef) dflt='n' ;;
85*) case "$ptrsize" in
86 4) dflt='y' ;;
87 *) dflt='n' ;;
88 esac
89 ;;
dcf40b7d 90esac
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91rp="Do you wish to attempt to use the malloc that comes with $package?"
92. ./myread
93usemymalloc="$ans"
94case "$ans" in
95y*|true)
96 usemymalloc='y'
97 mallocsrc='malloc.c'
98 mallocobj="malloc$_o"
99 d_mymalloc="$define"
100?X: Maybe libs.U should be dependent on mallocsrc.U, but then
101?X: most packages that use dist probably don't supply their own
102?X: malloc, so this is probably an o.k. comprpomise
103 case "$libs" in
104 *-lmalloc*)
105 : Remove malloc from list of libraries to use
106 echo "Removing unneeded -lmalloc from library list" >&4
107 set `echo X $libs | $sed -e 's/-lmalloc / /' -e 's/-lmalloc$//'`
108 shift
109 libs="$*"
110 echo "libs = $libs" >&4
111 ;;
112 esac
113 ;;
114*)
115 usemymalloc='n'
116 mallocsrc=''
117 mallocobj=''
118 d_mymalloc="$undef"
119 ;;
120esac
121
122@end
123@if MALLOCPTRTYPE || Malloc_t || Free_t
124: compute the return types of malloc and free
125echo " "
126$cat >malloc.c <<END
127#$i_malloc I_MALLOC
128#$i_stdlib I_STDLIB
129#include <stdio.h>
130#include <sys/types.h>
131#ifdef I_MALLOC
132#include <malloc.h>
133#endif
134#ifdef I_STDLIB
135#include <stdlib.h>
136#endif
137#ifdef TRY_MALLOC
138void *malloc();
139#endif
140#ifdef TRY_FREE
141void free();
142#endif
143END
144@if MALLOCPTRTYPE || Malloc_t
145case "$malloctype" in
146'')
147 if $cc $ccflags -c -DTRY_MALLOC malloc.c >/dev/null 2>&1; then
148 malloctype='void *'
149 else
150 malloctype='char *'
151 fi
152 ;;
153esac
154echo "Your system wants malloc to return '$malloctype', it would seem." >&4
155@end
156
157@if Free_t
158case "$freetype" in
159'')
160 if $cc $ccflags -c -DTRY_FREE malloc.c >/dev/null 2>&1; then
161 freetype='void'
162 else
163 freetype='int'
164 fi
165 ;;
166esac
167echo "Your system uses $freetype free(), it would seem." >&4
168@end
169$rm -f malloc.[co]
170@end