3 # On some hosts (e.g., HP-UX 10.20, SunOS 4.1.4, Solaris 2.5.1), mkstemp has a
4 # silly limit that it can create no more than 26 files from a given template.
5 # Other systems lack mkstemp altogether.
6 # On OSF1/Tru64 V4.0F, the system-provided mkstemp function can create
7 # only 32 files per process.
8 # On systems like the above, arrange to use the replacement function.
9 AC_DEFUN([gl_FUNC_MKSTEMP],
11 AC_REPLACE_FUNCS(mkstemp)
12 if test $ac_cv_func_mkstemp = no; then
13 gl_cv_func_mkstemp_limitations=yes
15 AC_CACHE_CHECK([for mkstemp limitations],
16 gl_cv_func_mkstemp_limitations,
23 for (i = 0; i < 70; i++)
25 char template[] = "conftestXXXXXX";
26 int fd = mkstemp (template);
34 gl_cv_func_mkstemp_limitations=no,
35 gl_cv_func_mkstemp_limitations=yes,
36 gl_cv_func_mkstemp_limitations=yes
42 if test $gl_cv_func_mkstemp_limitations = yes; then
45 AC_DEFINE(mkstemp, rpl_mkstemp,
46 [Define to rpl_mkstemp if the replacement function should be used.])
52 # Prerequisites of lib/mkstemp.c.
53 AC_DEFUN([gl_PREREQ_MKSTEMP],
57 # Prerequisites of lib/tempname.c.
58 AC_DEFUN([gl_PREREQ_TEMPNAME],
60 AC_REQUIRE([AC_HEADER_STAT])
61 AC_CHECK_HEADERS_ONCE(fcntl.h sys/time.h unistd.h)
62 AC_CHECK_HEADERS(stdint.h)
63 AC_CHECK_FUNCS(__secure_getenv gettimeofday)
64 AC_CHECK_DECLS_ONCE(getenv)
65 AC_REQUIRE([gl_AC_TYPE_UINTMAX_T])