GNU bug report logs - #77990
[PATCH] gnu: Add emacs-ffi.

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From: "Suhail Singh" <suhailsingh247 <at> gmail.com>
To: 77990 <at> debbugs.gnu.org
Cc: Andrew Tropin <andrew <at> trop.in>, Cayetano Santos <csantosb <at> inventati.org>, Divya Ranjan Pattanaik <divya <at> subvertising.org>, Hilton Chain <hako <at> ultrarare.space>, Ian Eure <ian <at> retrospec.tv>, Katherine Cox-Buday <cox.katherine.e+guix <at> gmail.com>, Liliana Marie Prikler <liliana.prikler <at> gmail.com>
Subject: [bug#77990] [PATCH v2] gnu: Add emacs-ffi.
Date: Tue, 22 Apr 2025 10:51:53 -0400

* gnu/packages/emacs-xyz.scm (emacs-ffi): New variable.

Change-Id: I3379ff4728d3e3f45d5327978b5e284fcc0e664e
---
 gnu/packages/emacs-xyz.scm | 53 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/gnu/packages/emacs-xyz.scm b/gnu/packages/emacs-xyz.scm
index 08bd88fd08..e6253089e8 100644
--- a/gnu/packages/emacs-xyz.scm
+++ b/gnu/packages/emacs-xyz.scm
@@ -236,6 +236,7 @@ (define-module (gnu packages emacs-xyz)
   #:use-module (gnu packages llvm)
   #:use-module (gnu packages image)
   #:use-module (gnu packages image-viewers)
+  #:use-module (gnu packages libffi)
   #:use-module (gnu packages linux)
   #:use-module (gnu packages libevent)
   #:use-module (gnu packages lisp)
@@ -23092,6 +23093,58 @@ (define-public emacs-display-wttr
 @uref{https://wttr.in} and then displays it on the mode line.")
     (license license:gpl3+)))
 
+(define-public emacs-ffi
+  (package
+    (name "emacs-ffi")
+    (version "0.2.1")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/emacs-ffi/emacs-ffi")
+             (commit version)))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "05crpgscpbzkg4k0ylbfjz2wyw2r8lki8q9w2kmdpljsqrpdrwl0"))))
+    (build-system emacs-build-system)
+    (arguments
+     (list
+      #:tests? (not (%current-target-system))
+      #:phases
+      #~(modify-phases %standard-phases
+          (add-after 'unpack 'patch-module-load
+            (lambda _
+              (make-file-writable "src/ffi.el")
+              (emacs-substitute-sexps "src/ffi.el"
+                ("(require 'ffi-module nil t)"
+                 `(module-load
+                   ,(string-append #$output "/lib/ffi-module.so"))))))
+          (add-before 'check 'build-emacs-module
+            (lambda _
+              ;; Compile the shared object file.
+              (invoke "make"
+                      #$(string-append "CC="
+                                       (cc-for-target)))
+              ;; Copy the build artifacts to root and let the install phase do
+              ;; its thing
+              (copy-recursively "build/lib" ".")
+              ;; Install the shared object file into /lib.
+              (install-file "build/lib/ffi-module.so"
+                            (string-append #$output "/lib"))))
+          (add-before 'install 'installinfo
+            (lambda _
+              (install-file "build/doc/emacs-ffi.info"
+                            (string-append #$output "/share/info")))))))
+    (inputs (list emacs-compat libltdl libffi))
+    (native-inputs (list texinfo))
+    (home-page "https://emacs-ffi.github.io/emacs-ffi/")
+    (synopsis "FFI for Emacs based on libffi")
+    (description
+     "This package provides an FFI for Emacs.  It is based on
+libffi and relies on the dynamic module support in order to be loaded into
+Emacs.  It is relatively full-featured, but for the time being low-level.")
+    (license license:gpl3+)))
+
 (define-public emacs-free-keys
   (package
     (name "emacs-free-keys")

base-commit: c8194a529724721e2b96e0fe259cd92b63ff57aa

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