diff --git a/llvm/cmake/modules/LLVMConfig.cmake.in b/llvm/cmake/modules/LLVMConfig.cmake.in
--- a/llvm/cmake/modules/LLVMConfig.cmake.in
+++ b/llvm/cmake/modules/LLVMConfig.cmake.in
@@ -75,7 +75,7 @@
 
 set(LLVM_ENABLE_ZSTD @LLVM_ENABLE_ZSTD@)
 if(LLVM_ENABLE_ZSTD)
-  set(zstd_ROOT @zstd_ROOT@)
+  set(zstd_DIR @zstd_DIR@)
   find_package(zstd)
 endif()
 
diff --git a/llvm/lib/Support/CMakeLists.txt b/llvm/lib/Support/CMakeLists.txt
--- a/llvm/lib/Support/CMakeLists.txt
+++ b/llvm/lib/Support/CMakeLists.txt
@@ -22,7 +22,7 @@
 endif()
 
 if(LLVM_ENABLE_ZLIB)
-  set(imported_libs ZLIB::ZLIB)
+  list(APPEND imported_libs ZLIB::ZLIB)
 endif()
 
 if(LLVM_ENABLE_ZSTD)
@@ -305,6 +305,7 @@
   if(NOT zstd_library)
     get_property(zstd_library TARGET zstd::libzstd_shared PROPERTY LOCATION)
   endif()
+  get_library_name(${zstd_library} zstd_library)
   set(llvm_system_libs ${llvm_system_libs} "${zstd_library}")
 endif()
 
diff --git a/llvm/tools/llvm-config/CMakeLists.txt b/llvm/tools/llvm-config/CMakeLists.txt
--- a/llvm/tools/llvm-config/CMakeLists.txt
+++ b/llvm/tools/llvm-config/CMakeLists.txt
@@ -17,9 +17,14 @@
 # Compute the substitution values for various items.
 get_property(SUPPORT_SYSTEM_LIBS TARGET LLVMSupport PROPERTY LLVM_SYSTEM_LIBS)
 get_property(WINDOWSMANIFEST_SYSTEM_LIBS TARGET LLVMWindowsManifest PROPERTY LLVM_SYSTEM_LIBS)
+
 foreach(l ${SUPPORT_SYSTEM_LIBS} ${WINDOWSMANIFEST_SYSTEM_LIBS})
   if(MSVC)
-    set(SYSTEM_LIBS ${SYSTEM_LIBS} "${l}.lib")
+    if(IS_ABSOLUTE ${l})
+      set(SYSTEM_LIBS ${SYSTEM_LIBS} "${l}")
+    else()
+      set(SYSTEM_LIBS ${SYSTEM_LIBS} "${l}.lib")
+    endif()
   else()
     if (l MATCHES "^-")
       # If it's an option, pass it without changes.
@@ -34,6 +39,7 @@
     endif()
   endif()
 endforeach()
+
 string(REPLACE ";" " " SYSTEM_LIBS "${SYSTEM_LIBS}")
 
 # Fetch target specific compile options, e.g. RTTI option