add better support for IWYU and fix things

Remove the "make iwyu" build target. Move the functionality into the
recently introduced lint.fish script. Fix a lot, but not all, of the
include-what-you-use errors. Specifically, it fixes all of the IWYU errors
on my OS X server but only removes some of them on my Ubuntu 14.04 server.

Fixes #2957

1 files changed, 3 insertions, 17 deletions

diff --git a/src/util.cpp b/src/util.cpp
index 14cce1c7..9d084af6 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -3,31 +3,17 @@
 
   Contains datastructures such as automatically growing array lists, priority queues, etc.
 */
-
-#include "config.h"
-
-
-#include <stdio.h>
 #include <stdlib.h>
 #include <wchar.h>
-#include <math.h>
-#include <sys/time.h>
-#include <stdarg.h>
-#include <string.h>
-#include <ctype.h>
 #include <wctype.h>
-#include <unistd.h>
 #include <sys/types.h>
-#include <sys/stat.h>
-#include <dirent.h>
 #include <errno.h>
-#include <assert.h>
+#include <sys/time.h>
 
-#include "fallback.h"
+#include "fallback.h"  // IWYU pragma: keep
 #include "util.h"
-
 #include "common.h"
-#include "wutil.h"
+#include "wutil.h"  // IWYU pragma: keep
 
 int wcsfilecmp(const wchar_t *a, const wchar_t *b)
 {