1 files changed, 66 insertions, 0 deletions
diff --git a/gnu/usr.bin/texinfo/m4/mkstemp.m4 b/gnu/usr.bin/texinfo/m4/mkstemp.m4
new file mode 100644
index 00000000000..82e1ce5853b
--- /dev/null
+++ b/gnu/usr.bin/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])
+])