blob: bd3cad46660bb1262e15114e86112ffb4377f495 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
#serial 1
dnl From Jim Meyering.
dnl Determine whether malloc accepts 0 as its argument.
dnl If it doesn't, arrange to use the replacement function.
dnl
dnl If you use this macro in a package, you should
dnl add the following two lines to acconfig.h:
dnl /* Define to rpl_malloc if the replacement function should be used. */
dnl #undef malloc
dnl
AC_DEFUN(jm_FUNC_MALLOC,
[
if test x = y; then
dnl This code is deliberately never run via ./configure.
dnl FIXME: this is a gross hack to make autoheader put an entry
dnl for this symbol in config.h.in.
AC_CHECK_FUNCS(DONE_WORKING_MALLOC_CHECK)
fi
dnl xmalloc.c requires that this symbol be defined so it doesn't
dnl mistakenly use a broken malloc -- as it might if this test were omitted.
ac_kludge=HAVE_DONE_WORKING_MALLOC_CHECK
AC_DEFINE_UNQUOTED($ac_kludge)
AC_CACHE_CHECK([for working malloc], jm_cv_func_working_malloc,
[AC_TRY_RUN([
char *malloc ();
int
main ()
{
exit (malloc (0) ? 0 : 1);
}
],
jm_cv_func_working_malloc=yes,
jm_cv_func_working_malloc=no,
dnl When crosscompiling, assume malloc is broken.
jm_cv_func_working_malloc=no)
])
if test $jm_cv_func_working_malloc = no; then
LIBOBJS="$LIBOBJS malloc.o"
AC_DEFINE_UNQUOTED(malloc, rpl_malloc)
fi
])
|
