summaryrefslogtreecommitdiff
path: root/Build/source/utils/texinfo/m4/mkstemp.m4
diff options
context:
space:
mode:
Diffstat (limited to 'Build/source/utils/texinfo/m4/mkstemp.m4')
-rw-r--r--Build/source/utils/texinfo/m4/mkstemp.m466
1 files changed, 66 insertions, 0 deletions
diff --git a/Build/source/utils/texinfo/m4/mkstemp.m4 b/Build/source/utils/texinfo/m4/mkstemp.m4
new file mode 100644
index 00000000000..82e1ce5853b
--- /dev/null
+++ b/Build/source/utils/texinfo/m4/mkstemp.m4
@@ -0,0 +1,66 @@
+#serial 6
+
+# 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([gl_FUNC_MKSTEMP],
+[dnl
+ AC_REPLACE_FUNCS(mkstemp)
+ if test $ac_cv_func_mkstemp = no; then
+ gl_cv_func_mkstemp_limitations=yes
+ else
+ AC_CACHE_CHECK([for mkstemp limitations],
+ gl_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);
+ }
+ ],
+ gl_cv_func_mkstemp_limitations=no,
+ gl_cv_func_mkstemp_limitations=yes,
+ gl_cv_func_mkstemp_limitations=yes
+ )
+ ]
+ )
+ fi
+
+ if test $gl_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
+ gl_PREREQ_TEMPNAME
+ fi
+])
+
+# Prerequisites of lib/mkstemp.c.
+AC_DEFUN([gl_PREREQ_MKSTEMP],
+[
+])
+
+# Prerequisites of lib/tempname.c.
+AC_DEFUN([gl_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([gl_AC_TYPE_UINTMAX_T])
+])