vcpkg/ports/ktx/0001-Use-vcpkg-zstd.patch

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0bdb708..356c160 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -121,7 +121,6 @@ set(KTX_MAIN_SRC
     lib/basisu/transcoder/basisu_transcoder.cpp
     lib/basisu/transcoder/basisu_transcoder.h
     lib/basisu/transcoder/basisu.h
-    lib/basisu/zstd/zstd.c
     lib/checkheader.c
     lib/dfdutils/createdfd.c
     lib/dfdutils/colourspaces.c
@@ -227,7 +226,6 @@ macro(commom_lib_settings lib write)
         $<INSTALL_INTERFACE:lib/basisu/transcoder>
 
         $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/lib/basisu/transcoder>
-        $<INSTALL_INTERFACE:lib/basisu/zstd>
 
         $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/other_include>
         $<INSTALL_INTERFACE:other_include>
@@ -309,6 +307,11 @@ macro(commom_lib_settings lib write)
     endif()
 
     if(WIN32)
+        find_package(zstd CONFIG REQUIRED)
+        target_link_libraries(
+            ${lib}
+            $<IF:$<TARGET_EXISTS:zstd::libzstd_shared>,zstd::libzstd_shared,zstd::libzstd_static>
+        )        
         # By wrapping in generator expression we force multi configuration generators (like Visual Studio)
         # to take the exact path and not change it.
         set(CMAKE_RUNTIME_OUTPUT_DIRECTORY $<1:${KTX_BUILD_DIR}/$<CONFIG>>)
diff --git a/lib/basisu/CMakeLists.txt b/lib/basisu/CMakeLists.txt
index 78dd110..e155896 100644
--- a/lib/basisu/CMakeLists.txt
+++ b/lib/basisu/CMakeLists.txt
@@ -118,7 +118,7 @@ set(BASISU_SRC_LIST ${COMMON_SRC_LIST}
 	)
 
 if (ZSTD)
-	set(BASISU_SRC_LIST ${BASISU_SRC_LIST} zstd/zstd.c)
+	set(ZSTD_LIBRARIES "$<IF:$<TARGET_EXISTS:zstd::libzstd_shared>,zstd::libzstd_shared,zstd::libzstd_static>")
 endif()
 
 if (APPLE)
@@ -137,6 +137,10 @@ else()
 	target_compile_definitions(basisu PRIVATE BASISD_SUPPORT_KTX2_ZSTD=0)
 endif()
 
+if(ZSTD_LIBRARIES)
+    target_link_libraries(basisu ${ZSTD_LIBRARIES})
+endif()
+
 if (NOT MSVC)
    target_link_libraries(basisu m pthread)
 endif()
diff --git a/lib/basisu/webgl/encoder/CMakeLists.txt b/lib/basisu/webgl/encoder/CMakeLists.txt
index e365e1b..6e6a7a5 100644
--- a/lib/basisu/webgl/encoder/CMakeLists.txt
+++ b/lib/basisu/webgl/encoder/CMakeLists.txt
@@ -36,9 +36,7 @@ if (EMSCRIPTEN)
   )
 
   if (KTX2_ZSTANDARD)
-  	set(SRC_LIST ${SRC_LIST}
-		../../zstd/zstd.c
-	)
+    set(ZSTD_LIBRARIES "$<IF:$<TARGET_EXISTS:zstd::libzstd_shared>,zstd::libzstd_shared,zstd::libzstd_static>")
 	set(ZSTD_DEFINITION BASISD_SUPPORT_KTX2_ZSTD=1)
   else()
   	set(ZSTD_DEFINITION BASISD_SUPPORT_KTX2_ZSTD=0)
@@ -58,6 +56,10 @@ if (EMSCRIPTEN)
   
   target_include_directories(basis_encoder.js PRIVATE ../../transcoder)
 
+  if(ZSTD_LIBRARIES)
+      target_link_libraries(basis_encoder.js ${ZSTD_LIBRARIES})
+  endif()
+  
   set_target_properties(basis_encoder.js PROPERTIES
       OUTPUT_NAME "basis_encoder"
       SUFFIX ".js"
diff --git a/lib/basisu/webgl/transcoder/CMakeLists.txt b/lib/basisu/webgl/transcoder/CMakeLists.txt
index 372653d..2e19ece 100644
--- a/lib/basisu/webgl/transcoder/CMakeLists.txt
+++ b/lib/basisu/webgl/transcoder/CMakeLists.txt
@@ -28,9 +28,7 @@ if (EMSCRIPTEN)
   endif()
   
   if (KTX2_ZSTANDARD)
- 	set(SRC_LIST ${SRC_LIST}
-		../../zstd/zstddeclib.c
-	)
+    set(ZSTD_LIBRARIES "$<IF:$<TARGET_EXISTS:zstd::libzstd_shared>,zstd::libzstd_shared,zstd::libzstd_static>")
 	set(ZSTD_DEFINITION BASISD_SUPPORT_KTX2_ZSTD=1)
   else()
   	set(ZSTD_DEFINITION BASISD_SUPPORT_KTX2_ZSTD=0)
@@ -44,7 +42,9 @@ if (EMSCRIPTEN)
   target_compile_definitions(basis_transcoder.js PRIVATE NDEBUG BASISD_SUPPORT_UASTC=1 BASISD_SUPPORT_BC7=1 BASISD_SUPPORT_ATC=0 BASISD_SUPPORT_ASTC_HIGHER_OPAQUE_QUALITY=0 BASISD_SUPPORT_PVRTC2=0 BASISD_SUPPORT_FXT1=0 BASISD_SUPPORT_ETC2_EAC_RG11=0 BASISU_SUPPORT_ENCODING=0 ${KTX2_DEFINITION} ${ZSTD_DEFINITION} )
   target_compile_options(basis_transcoder.js PRIVATE -O3 -fno-strict-aliasing)
   target_include_directories(basis_transcoder.js PRIVATE ../../transcoder)
-
+  if(ZSTD_LIBRARIES)
+      target_link_libraries(basis_transcoder.js ${ZSTD_LIBRARIES})
+  endif()
   set_target_properties(basis_transcoder.js PROPERTIES
       OUTPUT_NAME "basis_transcoder"
       SUFFIX ".js"