From 8eea800f1a9f8b9cf7ec8c128956c9533a977533 Mon Sep 17 00:00:00 2001
From: geos_one <mario.fetka@disconnected-by-peer.at>
Date: Sat, 9 Aug 2025 00:45:42 +0200
Subject: [PATCH] gcc 14 patch

---
 debian/rules | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/debian/rules b/debian/rules
index 0552a65..1d0d496 100755
--- a/debian/rules
+++ b/debian/rules
@@ -2,7 +2,19 @@
 
 NULL =
 
-export DEB_BUILD_MAINT_OPTIONS = hardening=+all
+# Make sure lintian does not complain about missing hardenings.
+export DEB_BUILD_MAINT_OPTIONS=hardening=+all
+
+# Make sure the decades-old source code gets compiled by allowing implicit
+# function declarations and, for gcc-14 and above, by downgrading the
+# diagnostics applied by the compiler. See
+# https://gcc.gnu.org/onlinedocs/gcc-14.1.0/gcc/Warning-Options.html
+# for further details.
+export DEB_CFLAGS_MAINT_STRIP=-Wincompatible-pointer-types
+cc_major := $(shell $(CC) --version | head -n1 | cut -d' ' -f4 | cut -d. -f1)
+cc_major_ge_14 := $(shell [ $(cc_major) -ge 14 ] && echo 'true')
+export DEB_CFLAGS_MAINT_APPEND=$(if $(cc_major_ge_14),-fpermissive)
+
 DPKG_EXPORT_BUILDFLAGS = 1
 include /usr/share/dpkg/buildflags.mk