The TIME_T_IS_SIGNED macro not defined if time_t is unsigned.
This causes the test for working mtime to fail to compile on such
systems such as OpenVMS.
configure:33308: cc -o conftest -g conftest.c >&5
time_t_max = (! TIME_T_IS_SIGNED
..................^
%CC-E-UNDECLARED, In this statement, "TIME_T_IS_SIGNED" is not declared.
at line number 452 in file LCL_ROOT:[gnulib]conftest.c;1
A simple hack gets the test to run.
--- /trunk_root/gnulib/m4/mktime.m4 2017-07-15 15:24:28 -0500
+++ /vms_root/gnulib/m4/mktime.m4 2017-09-21 19:20:43 -0500
@@ -195,6 +195,10 @@
alarm (60);
#endif
+#ifndef TIME_T_IS_SIGNED
+# define TIME_T_IS_SIGNED 0
+#endif
+
time_t_max = (! TIME_T_IS_SIGNED
? (time_t) -1
: ((((time_t) 1 << (sizeof (time_t) * CHAR_BIT - 2)) - 1)
Unfortunately after the test actually runs it shows that the OpenVMS
supplied mktime() fails on the spring_forward_gap() test.
Regards,
-John
