Adding more declarations, to hopefully remove byte compile warnings.

00.required-libraries.el

@@ -15,8 +15,11 @@ minor modes on a major mode."
                        else if (listp expr)
                          collect expr
                        else do (error "%s does not appear to name a minor mode" expr))))
-    `(hook-mode-attach ',hook (lambda () "Auto-generated by `hook-mode'"
-                                ,@body))))
+    `(progn
+       ;; Prevent byte-compile errors when running elisp-check.
+       (defvar ,hook)
+       (hook-mode-attach ',hook (lambda () "Auto-generated by `hook-mode'"
+                                  ,@body)))))
 
 (defvar hook-mode-*hooks* (make-hash-table :test #'eq))
 (defun hook-mode-attach (hook function)

c.el

@@ -43,12 +43,15 @@
 
 ;; ebrowse's default prefix key binding of "C-c C m -" is EXTREMELY
 ;; inconvenient.  Nothing else uses C-c C, so I'm moving it to that.
+(defvar ebrowse-global-prefix-key)
 (setf ebrowse-global-prefix-key (kbd "C-c C"))
 
 ;;; Custom commands:
 
 ;; Make CC-Mode's defun finding include any function comments that
 ;; immediately preceede it.
+(declare-function c-beginning-of-defun "cc-cmds")
+(declare-function c-backward-single-comment "cc-engine")
 (defun my-c-beginning-of-defun (&optional arg)
   "Move backward to the beginning of a defun, including comments.
 
@@ -62,6 +65,8 @@ ARG: Number of defuns to move, as in `c-beginning-of-defun'."
     (re-search-forward "\\(?:\\s \\|[\n\r]\\)*" nil t)))
 
 ;; Make CScope use next-error functionality, so "C-x `" works correctly
+(defvar cscope-output-buffer-name)
+(declare-function cscope-call "cscope")
 (defun cscope-next-error (n &optional reset)
   "Advance to the next error message and visit the file where the error was.
 This is the value of `next-error-function' in CScope buffers.

dired.el

@@ -1,6 +1,7 @@
 ;;; init/dired.el --- Dired mode customizations -*- lexical-binding: t; -*-
 
 ;;; Code:
+(declare-function dired-icon-mode "dired-icon")
 (hook-mode dired-mode-hook
   (when window-system
     (dired-icon-mode 1))

early-init.el

@@ -9,6 +9,7 @@
 ;;; Code:
 ;; `early-init-file' is set after the early init process, which serves
 ;; as a clear flag.
+(defvar modus-themes-headings)
 (unless early-init-file
   (setf modus-themes-headings
         '((1 . (variable-pitch (height 1.5)))