$NetBSD$

Ensure that pkgsrc libraries are used.
Backtrace support must be provided by libexecinfo.

--- CMakeLists.txt.orig	2024-11-24 17:03:15.000000000 +0000
+++ CMakeLists.txt
@@ -5,7 +5,7 @@ include(TargetArch.cmake)
 
 target_architecture(TARGET_ARCH)
 
-set(USE_INTERNAL_LIBS ON)
+set(USE_INTERNAL_LIBS OFF)
 if(USE_SYSTEM_LIBS)
 	set(USE_INTERNAL_LIBS OFF)
 endif()
@@ -202,6 +202,9 @@ if (NOT BUILD_NO_CLIENT)
 		target_link_libraries(openmohaa PRIVATE ${JPEG_LIBRARIES})
 	endif()
 
+	include(FindBacktrace)
+	target_link_libraries(openmohaa PRIVATE ${Backtrace_LIBRARIES})
+
 	INSTALL(TARGETS openmohaa DESTINATION ${CMAKE_INSTALL_BINDIR}/${BIN_INSTALL_SUBDIR})
 
 	if (MSVC)