--- lib/external/pattern_language/lib/CMakeLists.txt.orig	2023-06-20 14:11:25 UTC
+++ lib/external/pattern_language/lib/CMakeLists.txt
@@ -69,7 +69,7 @@ add_library(libpl ${LIBRARY_TYPE}
 )
 
 if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
-    target_compile_options(libpl PRIVATE -Wall -Wextra -Werror -Wpedantic -Wno-unknown-pragmas -Wno-array-bounds)
+    target_compile_options(libpl PRIVATE -Wall -Wextra -Werror -Wpedantic -Wno-unknown-pragmas -Wno-array-bounds -Wno-error=deprecated-declarations)
     if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
         target_compile_options(libpl PRIVATE -Wno-stringop-overflow)
     endif()
