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1 | ?RCS: $Id: mallocsrc.U,v 3.0 1993/08/18 12:09:12 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 1993/08/18 12:09:12 ram |
13 | ?RCS: Baseline for dist 3.0 netwide release. |
14 | ?RCS: |
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15 | ?MAKE:mallocsrc mallocobj usemymalloc malloctype d_mymalloc: Myread Oldconfig package \ |
16 | Guess Setvar test rm cat +cc +ccflags Findhdr |
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17 | ?MAKE: -pick add $@ %< |
18 | ?S:usemymalloc: |
19 | ?S: This variable contains y if the malloc that comes with this package |
20 | ?S: is desired over the system's version of malloc. People often include |
21 | ?S: special versions of malloc for effiency, but such versions are often |
22 | ?S: less portable. See also mallocsrc and mallocobj. |
23 | ?S:. |
24 | ?S:mallocsrc: |
25 | ?S: This variable contains the name of the malloc.c that comes with |
26 | ?S: the package, if that malloc.c is preferred over the system malloc. |
27 | ?S: Otherwise the value is null. This variable is intended for generating |
28 | ?S: Makefiles. |
29 | ?S:. |
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30 | ?S:d_mymalloc: |
31 | ?S: This variable conditionally defines MYMALLOC in case other parts |
32 | ?S: of the source want to take special action if MYMALLOC is used. |
33 | ?S: This may include different sorts of profiling or error detection. |
34 | ?S:. |
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35 | ?S:mallocobj: |
36 | ?S: This variable contains the name of the malloc.o that this package |
37 | ?S: generates, if that malloc.o is preferred over the system malloc. |
38 | ?S: Otherwise the value is null. This variable is intended for generating |
39 | ?S: Makefiles. See mallocsrc. |
40 | ?S:. |
41 | ?S:malloctype: |
42 | ?S: This variable contains the kind of ptr returned by malloc and realloc. |
43 | ?S:. |
44 | ?C:Malloc_t (MALLOCPTRTYPE): |
45 | ?C: This symbol is the type of pointer returned by malloc and realloc. |
46 | ?C:. |
47 | ?H:#define Malloc_t $malloctype /**/ |
48 | ?H:. |
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49 | ?C:MYMALLOC: |
50 | ?C: This symbol, if defined, indicates that we're using our own malloc. |
51 | ?C:. |
52 | ?H:#$d_mymalloc MYMALLOC /**/ |
53 | ?H:. |
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54 | ?X: Cannot test for mallocsrc; it is the unit's name and there is a bug in |
55 | ?X: the interpreter which defines all the names, even though they are not used. |
56 | @if mallocobj |
57 | : determine which malloc to compile in |
58 | : Old versions had dflt='y' only for bsd or v7. |
59 | echo " " |
60 | case "$usemymalloc" in |
61 | '') |
62 | if bsd || v7; then |
63 | dflt='y' |
64 | else |
65 | dflt='y' |
66 | fi |
67 | ;; |
68 | *) dflt="$usemymalloc" |
69 | ;; |
70 | esac |
71 | rp="Do you wish to attempt to use the malloc that comes with $package?" |
72 | . ./myread |
73 | usemymalloc="$ans" |
74 | case "$ans" in |
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75 | y*) mallocsrc='malloc.c' |
76 | mallocobj='malloc.o' |
77 | d_mymalloc="$define" |
78 | ;; |
79 | *) mallocsrc='' |
80 | mallocobj='' |
81 | d_mymalloc="$undef" |
82 | ;; |
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83 | esac |
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84 | @end |
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85 | |
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86 | @if MALLOCPTRTYPE || Malloc_t |
87 | : compute the type returned by malloc |
88 | echo " " |
89 | case "$malloctype" in |
90 | '') |
91 | if $test `./findhdr malloc.h`; then |
92 | echo "#include <malloc.h>" > malloc.c |
93 | fi |
94 | #include <malloc.h> |
95 | $cat >>malloc.c <<'END' |
96 | void *malloc(); |
97 | END |
98 | if $cc $ccflags -c malloc.c >/dev/null 2>&1; then |
99 | malloctype='void *' |
100 | else |
101 | malloctype='char *' |
102 | fi |
103 | $rm -f malloc.[co] |
104 | ;; |
105 | esac |
106 | echo "Your system wants malloc to return '$malloctype', it would seem." >&4 |
107 | |
108 | @end |