From 72bdcb4e25d7153feb2e3d585bc27c607fb9ad5f Mon Sep 17 00:00:00 2001
From: Campbell Barton <campbell@blender.org>
Date: Thu, 17 Aug 2023 11:53:52 +1000
Subject: [PATCH] CMake: use more conventional checks that libraries were found

The method of checking the library was found cause an undefined
variable warning when it was found.
---
 build_files/cmake/Modules/FindBrotli.cmake | 2 +-
 build_files/cmake/Modules/FindUSD.cmake    | 2 +-
 build_files/cmake/Modules/FindWebP.cmake   | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/build_files/cmake/Modules/FindBrotli.cmake b/build_files/cmake/Modules/FindBrotli.cmake
index 37c0aad608f..8f35a6ca4c7 100644
--- a/build_files/cmake/Modules/FindBrotli.cmake
+++ b/build_files/cmake/Modules/FindBrotli.cmake
@@ -59,7 +59,7 @@ FIND_LIBRARY(BROTLI_LIBRARY_DEC
 )
 
 
-IF(${BROTLI_LIBRARY_COMMON_NOTFOUND} or ${BROTLI_LIBRARY_DEC_NOTFOUND})
+IF((NOT BROTLI_LIBRARY_COMMON) OR (NOT BROTLI_LIBRARY_DEC))
   set(BROTLI_FOUND FALSE)
 ELSE()
   # handle the QUIETLY and REQUIRED arguments and set BROTLI_FOUND to TRUE if
diff --git a/build_files/cmake/Modules/FindUSD.cmake b/build_files/cmake/Modules/FindUSD.cmake
index d7d2c8806d9..ccd9c24bc46 100644
--- a/build_files/cmake/Modules/FindUSD.cmake
+++ b/build_files/cmake/Modules/FindUSD.cmake
@@ -52,7 +52,7 @@ FIND_LIBRARY(USD_LIBRARY
   DOC "Universal Scene Description (USD) monolithic library"
 )
 
-IF(${USD_LIBRARY_NOTFOUND})
+IF(NOT USD_LIBRARY)
   set(USD_FOUND FALSE)
 ELSE()
   # handle the QUIETLY and REQUIRED arguments and set USD_FOUND to TRUE if
diff --git a/build_files/cmake/Modules/FindWebP.cmake b/build_files/cmake/Modules/FindWebP.cmake
index d59d9410b2f..7a769d65319 100644
--- a/build_files/cmake/Modules/FindWebP.cmake
+++ b/build_files/cmake/Modules/FindWebP.cmake
@@ -59,7 +59,7 @@ FOREACH(COMPONENT ${_webp_FIND_COMPONENTS})
   LIST(APPEND _webp_LIBRARIES "${WEBP_${UPPERCOMPONENT}_LIBRARY}")
 ENDFOREACH()
 
-IF(${WEBP_WEBP_LIBRARY_NOTFOUND})
+IF(NOT WEBP_WEBP_LIBRARY)
   set(WEBP_FOUND FALSE)
 ELSE()
   # handle the QUIETLY and REQUIRED arguments and set WEBP_FOUND to TRUE if