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#serial 4
# On some hosts (e.g., HP-UX 10.20, SunOS 4.1.4, Solaris 2.5.1), mkstemp has a
# silly limit that it can create no more than 26 files from a given template.
# Other systems lack mkstemp altogether.
# On OSF1/Tru64 V4.0F, the system-provided mkstemp function can create
# only 32 files per process.
# On systems like the above, arrange to use the replacement function.
AC_DEFUN([UTILS_FUNC_MKSTEMP],
[dnl
AC_REPLACE_FUNCS(mkstemp)
if test $ac_cv_func_mkstemp = no; then
utils_cv_func_mkstemp_limitations=yes
else
AC_CACHE_CHECK([for mkstemp limitations],
utils_cv_func_mkstemp_limitations,
[
AC_TRY_RUN([
# include <stdlib.h>
int main ()
{
int i;
for (i = 0; i < 70; i++)
{
char template[] = "conftestXXXXXX";
int fd = mkstemp (template);
if (fd == -1)
exit (1);
close (fd);
}
exit (0);
}
],
utils_cv_func_mkstemp_limitations=no,
utils_cv_func_mkstemp_limitations=yes,
utils_cv_func_mkstemp_limitations=yes
)
]
)
fi
if test $utils_cv_func_mkstemp_limitations = yes; then
AC_LIBOBJ(mkstemp)
AC_LIBOBJ(tempname)
AC_DEFINE(mkstemp, rpl_mkstemp,
[Define to rpl_mkstemp if the replacement function should be used.])
gl_PREREQ_MKSTEMP
jm_PREREQ_TEMPNAME
fi
])
# Prerequisites of lib/mkstemp.c.
AC_DEFUN([gl_PREREQ_MKSTEMP],
[
])
# Prerequisites of lib/tempname.c.
AC_DEFUN([jm_PREREQ_TEMPNAME],
[
AC_REQUIRE([AC_HEADER_STAT])
AC_CHECK_HEADERS_ONCE(fcntl.h sys/time.h unistd.h)
AC_CHECK_HEADERS(stdint.h)
AC_CHECK_FUNCS(__secure_getenv gettimeofday)
AC_CHECK_DECLS_ONCE(getenv)
AC_REQUIRE([jm_AC_TYPE_UINTMAX_T])
])
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