From 0c8ef1e38f1acc1adb9a54d3e03ce66a25e6836e Mon Sep 17 00:00:00 2001
From: Jelle Licht <jlicht@fsfe.org>
Date: Thu, 17 Jul 2025 00:10:38 +0200
Subject: [PATCH] gnu: catimg: Fix build with gcc@14.

* gnu/packages/image-viewer.scm (catimg)[arguments]
<#:configure-flags>: Add _DEFAULT_SOURCE feature test macro.

Change-Id: Iba796f0f82546d632df2ab3120c4e3ec1a9647c0
Signed-off-by: Andreas Enge <andreas@enge.fr>
---
 gnu/packages/image-viewers.scm | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gnu/packages/image-viewers.scm b/gnu/packages/image-viewers.scm
index 2c0b2e407cd..b3d5839f9ad 100644
--- a/gnu/packages/image-viewers.scm
+++ b/gnu/packages/image-viewers.scm
@@ -578,6 +578,9 @@ your images.  Among its features are:
     (build-system cmake-build-system)
     (arguments
      `(#:tests? #f                      ; no tests
+       #:configure-flags
+       ;; Fix compilation with gcc-14
+       '("-DCMAKE_C_FLAGS=-D_DEFAULT_SOURCE")
        #:phases
        (modify-phases %standard-phases
          (add-after 'unpack 'patch-convert