diff --git a/extra-repos/systemd/gdm/APKBUILD b/extra-repos/systemd/gdm/APKBUILD
index b80317964..ef2c7eee9 100644
--- a/extra-repos/systemd/gdm/APKBUILD
+++ b/extra-repos/systemd/gdm/APKBUILD
@@ -3,7 +3,7 @@
 pkgname=gdm
 pkgver=99948.0
 _pkgver=48.0
-pkgrel=2
+pkgrel=3
 pkgdesc="GNOME display manager"
 url="https://wiki.gnome.org/Projects/GDM"
 # blocked by gnome-shell
@@ -45,6 +45,7 @@ source="https://download.gnome.org/sources/gdm/${_pkgver%%.*}/gdm-$_pkgver.tar.x
 	0001-DOWNSTREAM-use-bin-touch-instead-of-usr-bin-touch.patch
 	0003-DOWNSTREAM-pam-rename-common-to-base.patch
 	Xsession
+	gcc15.patch
 	"
 install="gdm.pre-install gdm.post-deinstall"
 builddir="$srcdir/gdm-$_pkgver"
@@ -81,4 +82,5 @@ sha512sums="
 aa302c33c9b31e823ab98ca80c330c3f7eaa10d05c402cf111d78a35fbec82ce90bff34c19b713b6e352428c31df91f04bd01b58cae8968e130a991c73382020  0001-DOWNSTREAM-use-bin-touch-instead-of-usr-bin-touch.patch
 66611d49fc4c9578415a7e554834edcb9de99396bd0ca511dcfd4fb256e8a1cd1fd5f10464f4668ffe04799d919bc22ddb58e8bf272017edba69a7951522e63d  0003-DOWNSTREAM-pam-rename-common-to-base.patch
 f836cf0acdf148f2ae09ac28251b5126ce597f08254c43b1ec77596f75e1a3229926116c13f98554625be763e8d28415b27bd679b0a5de9f86bdca7857054c82  Xsession
+9b6b1aba510267bfa366666dd1f2d3b22b0a8875313d72dbdbd568d79255e59b705a052889acff3b052a3dae38b87b3bc770a70604f64670f77a16c045c9d29c  gcc15.patch
 "
diff --git a/extra-repos/systemd/gdm/gcc15.patch b/extra-repos/systemd/gdm/gcc15.patch
new file mode 100644
index 000000000..c73a0dc54
--- /dev/null
+++ b/extra-repos/systemd/gdm/gcc15.patch
@@ -0,0 +1,52 @@
+From 2fbc2ac50b9f143eb594e5f77a8051222ffbd2c9 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
+Date: Mon, 27 Jan 2025 14:01:23 +0100
+Subject: [PATCH] gdm-settings-utils: rename variable to fix build with gcc 15
+
+In GNU23 C, bool is a keyword. Rename the variable to avoid syntax error.
+---
+ common/gdm-settings-utils.c | 8 ++++----
+ common/gdm-settings-utils.h | 2 +-
+ 2 files changed, 5 insertions(+), 5 deletions(-)
+
+diff --git a/common/gdm-settings-utils.c b/common/gdm-settings-utils.c
+index 636be3a9e..da4c7aefb 100644
+--- a/common/gdm-settings-utils.c
++++ b/common/gdm-settings-utils.c
+@@ -287,16 +287,16 @@ gdm_settings_parse_boolean_as_value  (gboolean boolval)
+ /* adapted from GKeyFile */
+ gboolean
+ gdm_settings_parse_value_as_boolean (const char *value,
+-                                     gboolean   *bool)
++                                     gboolean   *boolval)
+ {
+         g_return_val_if_fail (value != NULL, FALSE);
+-        g_return_val_if_fail (bool != NULL, FALSE);
++        g_return_val_if_fail (boolval != NULL, FALSE);
+ 
+         if (g_ascii_strcasecmp (value, "true") == 0 || strcmp (value, "1") == 0) {
+-                *bool = TRUE;
++                *boolval = TRUE;
+                 return TRUE;
+         } else if (g_ascii_strcasecmp (value, "false") == 0 || strcmp (value, "0") == 0) {
+-                *bool = FALSE;
++                *boolval = FALSE;
+                 return TRUE;
+         } else {
+                 return FALSE;
+diff --git a/common/gdm-settings-utils.h b/common/gdm-settings-utils.h
+index 4f2362ce7..734d625c7 100644
+--- a/common/gdm-settings-utils.h
++++ b/common/gdm-settings-utils.h
+@@ -44,7 +44,7 @@ gboolean                  gdm_settings_parse_schemas           (const char  *fil
+                                                                 GSList     **list);
+ 
+ gboolean                  gdm_settings_parse_value_as_boolean  (const char *value,
+-                                                                gboolean   *bool);
++                                                                gboolean   *boolval);
+ gboolean                  gdm_settings_parse_value_as_integer  (const char *value,
+                                                                 int        *intval);
+ gboolean                  gdm_settings_parse_value_as_double   (const char *value,
+-- 
+GitLab
+