diff --git a/package/libdex/Config.in b/package/libdex/Config.in
index f10bdac46f..5f94a79b73 100644
--- a/package/libdex/Config.in
+++ b/package/libdex/Config.in
@@ -3,7 +3,11 @@ config BR2_PACKAGE_LIBDEX
 	depends on BR2_USE_MMU # libglib2
 	depends on BR2_USE_WCHAR # libglib2, gettext
 	depends on BR2_TOOLCHAIN_HAS_THREADS # libglib2
+	depends on BR2_TOOLCHAIN_HAS_UCONTEXT || \
+		BR2_PACKAGE_LIBUCONTEXT_ARCH_SUPPORTS
 	select BR2_PACKAGE_LIBGLIB2
+	select BR2_PACKAGE_LIBUCONTEXT if \
+		BR2_PACKAGE_LIBUCONTEXT_ARCH_SUPPORTS && !BR2_TOOLCHAIN_HAS_UCONTEXT
 	help
 	  Dex provides Future-based programming for GLib-based
 	  applications. It both integrates with and brings new
@@ -12,6 +16,8 @@ config BR2_PACKAGE_LIBDEX
 
 	  https://gitlab.gnome.org/GNOME/libdex
 
-comment "libdex needs a toolchain w/ wchar, threads"
+comment "libdex needs a toolchain w/ wchar, threads, ucontext"
 	depends on BR2_USE_MMU
-	depends on !BR2_USE_WCHAR || !BR2_TOOLCHAIN_HAS_THREADS
+	depends on !BR2_USE_WCHAR || !BR2_TOOLCHAIN_HAS_THREADS || \
+		!(BR2_TOOLCHAIN_HAS_UCONTEXT || \
+			BR2_PACKAGE_LIBUCONTEXT_ARCH_SUPPORTS)
diff --git a/package/libdex/libdex.mk b/package/libdex/libdex.mk
index 7c652a0409..360b389255 100644
--- a/package/libdex/libdex.mk
+++ b/package/libdex/libdex.mk
@@ -22,6 +22,11 @@ LIBDEX_CONF_OPTS = \
 	-Deventfd=enabled \
 	-Dintrospection=disabled
 
+ifeq ($(BR2_PACKAGE_LIBUCONTEXT),y)
+LIBDEX_DEPENDENCIES += libucontext
+LIBDEX_LDFLAGS += $(TARGET_LDFLAGS) -lucontext
+endif
+
 ifeq ($(BR2_PACKAGE_LIBURING),y)
 LIBDEX_CONF_OPTS += -Dliburing=enabled
 LIBDEX_DEPENDENCIES += liburing