package/zxing-cpp: needs threads

threads are mandatory since switch to an active fork in commit
456a7398316655ad0b669635f580e4887c24a700:

CMake Error at /home/buildroot/autobuild/run/instance-1/output-1/host/share/cmake-3.28/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
  Could NOT find Threads (missing: Threads_FOUND)

Fixes: 456a7398316655ad0b669635f580e4887c24a700
 - http://autobuild.buildroot.org/results/b600582d9c5407c7324af70d61fa5c1f96d929f6

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/gstreamer1/gst1-plugins-bad/Config.in

@@ -746,11 +746,12 @@ config BR2_PACKAGE_GST1_PLUGINS_BAD_ZXING
 	depends on !BR2_STATIC_LIBS # zxing-cpp
 	depends on BR2_USE_WCHAR # zxing-cpp
 	depends on BR2_INSTALL_LIBSTDCPP # zxing-cpp
+	depends on BR2_TOOLCHAIN_HAS_THREADS # zxing-cpp
 	select BR2_PACKAGE_ZXING_CPP
 
-comment "zxing plugin needs a toolchain w/ C++, wchar, dynamic library"
+comment "zxing plugin needs a toolchain w/ C++, wchar, dynamic library, threads"
 	depends on BR2_STATIC_LIBS || !BR2_USE_WCHAR || \
-		!BR2_INSTALL_LIBSTDCPP
+		!BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_HAS_THREADS
 
 endif
 

package/zxing-cpp/Config.in

@@ -1,12 +1,13 @@
-comment "zxing-cpp needs a toolchain w/ C++, wchar, dynamic library"
+comment "zxing-cpp needs a toolchain w/ C++, wchar, dynamic library, threads"
 	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_USE_WCHAR || \
-		BR2_STATIC_LIBS
+		BR2_STATIC_LIBS || !BR2_TOOLCHAIN_HAS_THREADS
 
 config BR2_PACKAGE_ZXING_CPP
 	bool "zxing-cpp"
 	depends on !BR2_STATIC_LIBS
 	depends on BR2_USE_WCHAR
 	depends on BR2_INSTALL_LIBSTDCPP
+	depends on BR2_TOOLCHAIN_HAS_THREADS
 	select BR2_PACKAGE_STB
 	select BR2_PACKAGE_PYTHON_PYBIND if BR2_PACKAGE_PYTHON3
 	help