$NetBSD$

* Defining _XOPEN_SOURCE means that some dirent.h definitions are omitted,
  but they are used by the engine. So omit the definition.
* Use the pkgsrc libraries instead of compiling 3rd party sources.

--- CMakeLists.txt.orig	2023-06-16 02:36:07.000000000 +0000
+++ CMakeLists.txt
@@ -31,11 +31,12 @@ set(PLAT_WASM FALSE CACHE BOOL "Emscript
 set(PLAT_HOOKS FALSE CACHE BOOL "Hook DLL target")
 set(PLAT_MSVC FALSE CACHE BOOL "Windows 64-bit MSVC")
 set(PLAT_ANDROID_ARM64 FALSE CACHE BOOL "Android AArch64")
+set(PLAT_PKGSRC FALSE CACHE BOOL "Target pkgsrc")
 set(PLAT_AUTO FALSE CACHE BOOL "Target the host OS")
 
 # Set PLAT_AUTO if a platform isn't specifically selected
 if(NOT PLAT_LINUX_32 AND NOT PLAT_LINUX_64 AND NOT PLAT_MACOS AND NOT PLAT_MACOS_X86_64 AND NOT PLAT_MINGW_X86_64 AND NOT PLAT_WASM AND NOT PLAT_HOOKS)
-    set(PLAT_AUTO TRUE)
+#    set(PLAT_AUTO TRUE)
 endif()
 
 # Internal targets: Stuff like OpenGL vs D3D, OpenAL vs null sound, etc
@@ -105,7 +106,7 @@ if(PLAT_LINUX_32)
     message( STATUS "Targeting Linux 32-bit" )
     set(BIN_NAME "openjkdf2")
     
-    add_definitions(-D_XOPEN_SOURCE=500)
+#    add_definitions(-D_XOPEN_SOURCE=500)
     add_definitions(-D_DEFAULT_SOURCE)
 
     set(TARGET_USE_PHYSFS TRUE)
@@ -135,7 +136,7 @@ elseif(PLAT_LINUX_64)
     set(BIN_NAME "openjkdf2")
 
     add_definitions(-DARCH_64BIT)
-    add_definitions(-D_XOPEN_SOURCE=500)
+#    add_definitions(-D_XOPEN_SOURCE=500)
     add_definitions(-D_DEFAULT_SOURCE)
 
     set(TARGET_USE_PHYSFS TRUE)
@@ -365,6 +366,37 @@ elseif(PLAT_MSVC)
     set(TARGET_COMPILE_FREEGLUT TRUE)
 
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /std:c11")
+elseif(PLAT_PKGSRC)
+    message( STATUS "Targeting pkgsrc" )
+    set(BIN_NAME "openjkdf2")
+
+    add_compile_definitions(SDL2_RENDER)
+    add_compile_definitions(STDSOUND_OPENAL)
+    if(PLAT_PKGSRC64)
+        add_definitions(-DARCH_64BIT)
+    endif()
+#    add_definitions(-D_XOPEN_SOURCE=500)
+    add_definitions(-D_DEFAULT_SOURCE)
+    add_definitions(-DLINUX)
+    add_definitions(-DPLATFORM_LINUX)
+    add_definitions(-DPLATFORM_NO_CACERT_BLOB)
+
+    set(TARGET_USE_PHYSFS TRUE)
+    set(TARGET_USE_LIBSMACKER TRUE)
+    set(TARGET_USE_LIBSMUSHER TRUE)
+    set(TARGET_USE_SDL2 TRUE)
+    set(TARGET_USE_OPENGL TRUE)
+    set(TARGET_USE_OPENAL TRUE)
+    set(TARGET_POSIX TRUE)
+    set(TARGET_PKGSRC TRUE)
+    set(TARGET_NO_BLOBS TRUE)
+    set(TARGET_CAN_JKGM TRUE)
+    set(OPENJKDF2_NO_ASAN TRUE)
+    
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g -std=c11 -fshort-wchar -Wno-implicit-function-declaration -Wno-unused-variable -Wno-parentheses ")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -fshort-wchar -Wno-implicit-function-declaration -Wno-unused-variable -Wno-parentheses ")
+    add_link_options(-fshort-wchar)
+
 endif()
 
 if(NOT CMAKE_BUILD_TYPE)
@@ -373,7 +405,7 @@ endif()
 
 # CMake module paths
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake_modules")
-if(TARGET_LINUX OR TARGET_MACOS OR PLAT_MSVC OR TARGET_ANDROID)
+if(TARGET_LINUX OR TARGET_MACOS OR PLAT_MSVC OR TARGET_ANDROID OR TARGET_PKGSRC)
     list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake_modules_linux")
 endif()
 
@@ -478,7 +510,7 @@ if(TARGET_MACOS)
     endif()
 endif()
 
-if(TARGET_LINUX)
+if(TARGET_LINUX OR TARGET_PKGSRC)
     find_package(PkgConfig REQUIRED)
     pkg_check_modules(GTK3 REQUIRED gtk+-3.0)
     include_directories(${GTK3_INCLUDE_DIRS})
@@ -727,6 +759,10 @@ elseif(TARGET_MACOS)
     # macOS post-build packaging
     #
     include(cmake_modules/postcompile_macos.cmake)
+elseif(TARGET_PKGSRC)
+    target_link_libraries(${BIN_NAME} PRIVATE -lm -lpng -lz -lSDL2 -lSDL2_mixer -lGL -lGLEW -lopenal)
+    target_link_libraries(${BIN_NAME} PRIVATE nlohmann_json::nlohmann_json)
+    target_link_libraries(${BIN_NAME} PRIVATE ${GTK3_LIBRARIES})
 else()
     message(FATAL_ERROR "Unknown target! Cannot continue.")
 endif()