[PATCH 4/8] Fix [-Werror=unused-variable] on OS/2

[KO Myung-Hun]

* src/getopt.c (_getopt_initialize): Use statements without any effect.
* src/posixos.c (set_blocking): Declare parameters with UNUSED.
* src/remake.c (f_mtime) [__EMX__]: Declare adjustment with UNUSED.
---
 src/getopt.c  | 3 +++
 src/posixos.c | 2 +-
 src/remake.c  | 1 +
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/getopt.c b/src/getopt.c
index 9f31a70d..fc7cead4 100644
--- a/src/getopt.c
+++ b/src/getopt.c
@@ -436,6 +436,9 @@ _getopt_initialize (int argc, char *const *argv, const char 
*optstring)
     nonoption_flags_len = 0;
 #endif
 
+  /* Make compiler happy.  */
+  (void)argc; (void)argv;
+
   return optstring;
 }
 
diff --git a/src/posixos.c b/src/posixos.c
index 44aeb346..0a737521 100644
--- a/src/posixos.c
+++ b/src/posixos.c
@@ -118,7 +118,7 @@ make_job_rfd ()
 }
 
 static void
-set_blocking (int fd, int blocking)
+set_blocking (int fd UNUSED, int blocking UNUSED)
 {
   /* If we're not using pselect() don't change the blocking.  */
 #ifdef HAVE_PSELECT
diff --git a/src/remake.c b/src/remake.c
index 4ce3d2a3..2851c773 100644
--- a/src/remake.c
+++ b/src/remake.c
@@ -1470,6 +1470,7 @@ f_mtime (struct file *file, int search)
       /* FAT filesystems round time to the nearest even second!
          Allow for any file (NTFS or FAT) to perhaps suffer from this
          brain damage.  */
+      UNUSED
       FILE_TIMESTAMP adjustment = (((FILE_TIMESTAMP_S (adjusted_mtime) & 1) == 0
                      && FILE_TIMESTAMP_NS (adjusted_mtime) == 0)
                     ? (FILE_TIMESTAMP) 1 << FILE_TIMESTAMP_LO_BITS
-- 
2.30.0