New upstream version 1.9

[debian/gzip] / m4 / utime_h.m4

diff --git a/m4/utime_h.m4 b/m4/utime_h.m4
new file mode 100644 (file)
index 0000000..89e301b
--- /dev/null
+++ b/m4/utime_h.m4
@@ -0,0 +1,59 @@
+# utime_h.m4 serial 1
+dnl Copyright (C) 2017-2018 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+AC_DEFUN([gl_UTIME_H],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  AC_REQUIRE([gl_UTIME_H_DEFAULTS])
+  AC_CHECK_HEADERS_ONCE([utime.h])
+  gl_CHECK_NEXT_HEADERS([utime.h])
+
+  if test $ac_cv_header_utime_h = yes; then
+    HAVE_UTIME_H=1
+  else
+    HAVE_UTIME_H=0
+  fi
+  AC_SUBST([HAVE_UTIME_H])
+
+  UTIME_H=''
+  if test $ac_cv_header_utime_h != yes; then
+    dnl Provide a substitute <utime.h> file.
+    UTIME_H=utime.h
+  else
+    case "$host_os" in
+      mingw*) dnl Need special handling of 'struct utimbuf'.
+        UTIME_H=utime.h
+        ;;
+    esac
+  fi
+  AC_SUBST([UTIME_H])
+  AM_CONDITIONAL([GL_GENERATE_UTIME_H], [test -n "$UTIME_H"])
+
+  dnl Check for declarations of anything we want to poison if the
+  dnl corresponding gnulib module is not in use.
+  gl_WARN_ON_USE_PREPARE([[#include <utime.h>
+    ]],
+    [utime])
+])
+
+AC_DEFUN([gl_UTIME_MODULE_INDICATOR],
+[
+  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
+  AC_REQUIRE([gl_UTIME_H_DEFAULTS])
+  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+  dnl Define it also as a C macro, for the benefit of the unit tests.
+  gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+AC_DEFUN([gl_UTIME_H_DEFAULTS],
+[
+  GNULIB_UTIME=0;            AC_SUBST([GNULIB_UTIME])
+  dnl Assume POSIX behavior unless another module says otherwise.
+  HAVE_UTIME=1;              AC_SUBST([HAVE_UTIME])
+  REPLACE_UTIME=0;           AC_SUBST([REPLACE_UTIME])
+])