Subject: [bug#74290] [PATCH v3 15/51] gnu: flex: Fix [cross-]build with gcc-14.

From: Janneke Nieuwenhuizen <[email-masked]>
Date: Tue, 19 Nov 2024 07:54:45 +0100

* gnu/packages/flex.scm (flex): When building for the 64bit Hurd, or
cross-compiling, add "-Wno-int-conversion "-Wno-implicit-function-declaration"
to #:configure-flags.

Change-Id: Ia0503e3f5c7aa5354a949b69035a1be6f93ec85f
---
 gnu/packages/flex.scm | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/gnu/packages/flex.scm b/gnu/packages/flex.scm
index 7972675971..4ad1e1382a 100644
--- a/gnu/packages/flex.scm
+++ b/gnu/packages/flex.scm
@@ -1,6 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2012, 2013, 2014, 2019 Ludovic Courtès <[email-masked]>
 ;;; Copyright © 2016 Efraim Flashner <[email-masked]>
+;;; Copyright © 2024 Janneke Nieuwenhuizen <[email-masked]>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -22,6 +23,7 @@ (define-module (gnu packages flex)
   #:use-module (guix packages)
   #:use-module (guix download)
   #:use-module (guix build-system gnu)
+  #:use-module (guix gexp)
   #:use-module (guix utils)
   #:use-module (gnu packages)
   #:use-module (gnu packages m4)
@@ -53,6 +55,12 @@ (define-public flex
                  ((#:tests? _ #f) #f)))
               (inputs (alist-delete "flex" (package-inputs bison))))))
        `(("bison" ,bison-for-tests))))
+    (arguments
+     (if (or (target-hurd64?) (%current-target-system))
+         (list #:configure-flags
+               #~'(#$(string-append "CFLAGS=-Wno-int-conversion"
+                                    " -Wno-implicit-function-declaration")))
+         '()))
     ;; m4 is not present in PATH when cross-building
     (native-inputs
      (list help2man m4))
-- 
2.46.0