[libblifparse] Suppressed Deprecation Warnings in the Parser

Suppressed the deprecation warnings in the parser since the fix for the
deprecation was not introduced until Bison 3.3; and we may still want to
support earlier versions of Bison.

In the future we should raise the minimum version of Bison from 3.0 to
3.3 for this project and fix the deprecation.

Author: AlexandreSinger

libs/EXTERNAL/libblifparse/CMakeLists.txt

@@ -27,7 +27,9 @@ file(GLOB_RECURSE PARSER_SOURCES src/blif*.y)
 #Make the flex and bison targets
 flex_target(BlifLexer ${LEXER_SOURCES} ${CMAKE_CURRENT_BINARY_DIR}/blif_lexer.gen.cpp
         COMPILE_FLAGS --header-file=${CMAKE_CURRENT_BINARY_DIR}/blif_lexer.gen.hpp)
-bison_target(BlifParser ${PARSER_SOURCES} ${CMAKE_CURRENT_BINARY_DIR}/blif_parser.gen.cpp)
+# Note: Suppressing deprecation warnings
+bison_target(BlifParser ${PARSER_SOURCES} ${CMAKE_CURRENT_BINARY_DIR}/blif_parser.gen.cpp
+        COMPILE_FLAGS -Wno-deprecated)
 add_flex_bison_dependency(BlifLexer BlifParser)
 
 #Suppress warnings in Flex/Bison generated files