Fix some compilation warnings in non nativecomp build (bug#43892)

	* lisp/emacs-lisp/advice.el (comp-subr-trampoline-install):
	Declare function.
	* lisp/emacs-lisp/find-func.el (comp-eln-to-el-h): Declare
	variable.
	* lisp/emacs-lisp/nadvice.el (comp-subr-trampoline-install):
	Declare function.
	* lisp/files.el (comp-eln-to-el-h): Declare variable.
	* lisp/help.el (subr-native-lambda-list): Declare function.

3 files changed, 6 insertions, 0 deletions

diff --git a/lisp/emacs-lisp/advice.el b/lisp/emacs-lisp/advice.el
index fb67de3a029..509e2551914 100644
--- a/lisp/emacs-lisp/advice.el
+++ b/lisp/emacs-lisp/advice.el
@@ -2052,6 +2052,8 @@ in that CLASS."
 		 function class name)))
     (error "ad-remove-advice: `%s' is not advised" function)))
 
+(declare-function comp-subr-trampoline-install "comp")
+
 ;;;###autoload
 (defun ad-add-advice (function advice class position)
   "Add a piece of ADVICE to FUNCTION's list of advices in CLASS.
diff --git a/lisp/emacs-lisp/find-func.el b/lisp/emacs-lisp/find-func.el
index 9e4d8cf1aa8..4417082971f 100644
--- a/lisp/emacs-lisp/find-func.el
+++ b/lisp/emacs-lisp/find-func.el
@@ -178,6 +178,8 @@ See the functions `find-function' and `find-variable'."
             (setq name rel))))
     (unless (equal name library) name)))
 
+(defvar comp-eln-to-el-h)
+
 (defun find-library-name (library)
   "Return the absolute file name of the Emacs Lisp source of LIBRARY.
 LIBRARY should be a string (the name of the library)."
diff --git a/lisp/emacs-lisp/nadvice.el b/lisp/emacs-lisp/nadvice.el
index 8b60c08440b..e68c1356081 100644
--- a/lisp/emacs-lisp/nadvice.el
+++ b/lisp/emacs-lisp/nadvice.el
@@ -316,6 +316,8 @@ is also interactive.  There are 3 cases:
   `(advice--add-function ,where (gv-ref ,(advice--normalize-place place))
                          ,function ,props))
 
+(declare-function comp-subr-trampoline-install "comp")
+
 ;;;###autoload
 (defun advice--add-function (where ref function props)
   (when (and (featurep 'nativecomp)