GNU bug report logs - #57086
[PATCH 0/6] Add native compilation to Emacs

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From: Liliana Marie Prikler <liliana.prikler <at> gmail.com>
To: 57086 <at> debbugs.gnu.org
Subject: [bug#57086] [PATCH 5/6] guix: emacs-utils: Add emacs-compile-directory.
Date: Tue, 9 Aug 2022 20:26:06 +0200

* guix/build/emacs-utils.scm (emacs-compile-directory): New variable.
---
 guix/build/emacs-utils.scm | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/guix/build/emacs-utils.scm b/guix/build/emacs-utils.scm
index 8ee547f2b3..17155a0b8b 100644
--- a/guix/build/emacs-utils.scm
+++ b/guix/build/emacs-utils.scm
@@ -38,6 +38,7 @@ (define-module (guix build emacs-utils)
 
             emacs-generate-autoloads
             emacs-byte-compile-directory
+            emacs-compile-directory
             emacs-header-parse
 
             as-display
@@ -115,6 +116,31 @@ (define* (emacs-byte-compile-directory dir)
                 (byte-recompile-directory (file-name-as-directory ,dir) 0 1))))
     (emacs-batch-eval expr)))
 
+(define* (emacs-compile-directory dir)
+  "Compile all files in DIR to native code.
+
+If native code is not supported, compile to bytecode instead."
+  (emacs-batch-eval
+    `(let ((byte-compile-debug t)       ; for proper exit status
+           (byte+native-compile (native-comp-available-p))
+           (files (directory-files-recursively ,dir "\\.el$")))
+       (mapc
+        (lambda (file)
+          (let (byte-to-native-output-file)
+            (if byte+native-compile
+                (native-compile file (concat (file-name-sans-extension file)
+                                             ".eln"))
+                (byte-compile-file file))
+            ;; Sadly, we can't use pcase because quasiquote works different in
+            ;; Emacs.  See `batch-byte+native-compile' in comp.el for the
+            ;; actual shape of byte-to-native-output-file.
+            (unless (null byte-to-native-output-file)
+              (rename-file (car byte-to-native-output-file)
+                           (cdr byte-to-native-output-file)
+                           t))))
+       files))
+    #:dynamic? #t))
+
 (define (emacs-header-parse section file)
   "Parse the header SECTION in FILE and return it as a string."
   (emacs-batch-script
-- 
2.37.0

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