diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE__GMTIME.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE__GMTIME.h
new file mode 100644
index 0000000..f38c18d
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE__GMTIME.h
@@ -0,0 +1,13 @@
+// HAVE__GMTIME : BUILD2_AUTOCONF_LIBC_VERSION
+
+#ifndef BUILD2_AUTOCONF_LIBC_VERSION
+#  error BUILD2_AUTOCONF_LIBC_VERSION appears to be conditionally included
+#endif
+
+#undef HAVE__GMTIME
+
+/* Win32
+ */
+#if defined(_WIN32)
+#  define HAVE__GMTIME 1
+#endif
\ No newline at end of file
diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE__GMTIME32.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE__GMTIME32.h
new file mode 100644
index 0000000..12329ee
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE__GMTIME32.h
@@ -0,0 +1,13 @@
+// HAVE__GMTIME32 : BUILD2_AUTOCONF_LIBC_VERSION
+
+#ifndef BUILD2_AUTOCONF_LIBC_VERSION
+#  error BUILD2_AUTOCONF_LIBC_VERSION appears to be conditionally included
+#endif
+
+#undef HAVE__GMTIME32
+
+/* Win32
+ */
+#if defined(_WIN32)
+#  define HAVE__GMTIME32 1
+#endif
\ No newline at end of file
diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE__GMTIME32_S.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE__GMTIME32_S.h
new file mode 100644
index 0000000..fe0321f
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE__GMTIME32_S.h
@@ -0,0 +1,13 @@
+// HAVE__GMTIME32_S : BUILD2_AUTOCONF_LIBC_VERSION
+
+#ifndef BUILD2_AUTOCONF_LIBC_VERSION
+#  error BUILD2_AUTOCONF_LIBC_VERSION appears to be conditionally included
+#endif
+
+#undef HAVE__GMTIME32_S
+
+/* Win32
+ */
+#if defined(_WIN32)
+#  define HAVE__GMTIME32_S 1
+#endif
\ No newline at end of file
diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE__GMTIME64.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE__GMTIME64.h
new file mode 100644
index 0000000..315b148
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE__GMTIME64.h
@@ -0,0 +1,13 @@
+// HAVE__GMTIME64 : BUILD2_AUTOCONF_LIBC_VERSION
+
+#ifndef BUILD2_AUTOCONF_LIBC_VERSION
+#  error BUILD2_AUTOCONF_LIBC_VERSION appears to be conditionally included
+#endif
+
+#undef HAVE__GMTIME64
+
+/* Win32
+ */
+#if defined(_WIN32)
+#  define HAVE__GMTIME64 1
+#endif
\ No newline at end of file
diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE__GMTIME64_S.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE__GMTIME64_S.h
new file mode 100644
index 0000000..55f2bd0
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE__GMTIME64_S.h
@@ -0,0 +1,13 @@
+// HAVE__GMTIME64_S : BUILD2_AUTOCONF_LIBC_VERSION
+
+#ifndef BUILD2_AUTOCONF_LIBC_VERSION
+#  error BUILD2_AUTOCONF_LIBC_VERSION appears to be conditionally included
+#endif
+
+#undef HAVE__GMTIME64_S
+
+/* Win32
+ */
+#if defined(_WIN32)
+#  define HAVE__GMTIME64_S 1
+#endif
\ No newline at end of file
diff --git a/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE__GMTIME_S.h b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE__GMTIME_S.h
new file mode 100644
index 0000000..92377e0
--- /dev/null
+++ b/libbuild2-autoconf/libbuild2/autoconf/checks/HAVE__GMTIME_S.h
@@ -0,0 +1,13 @@
+// HAVE__GMTIME_S : BUILD2_AUTOCONF_LIBC_VERSION
+
+#ifndef BUILD2_AUTOCONF_LIBC_VERSION
+#  error BUILD2_AUTOCONF_LIBC_VERSION appears to be conditionally included
+#endif
+
+#undef HAVE__GMTIME_S
+
+/* Win32
+ */
+#if defined(_WIN32)
+#  define HAVE__GMTIME_S 1
+#endif
\ No newline at end of file