Bison build rules: permit use of deprecated commands

We would like to use "%define api.pure full" but this isn't yet
supported by macOS' default bison version (2.3). So we will need to use
the otherwise deprecated "%pure-parser" approach instead and permit use
of deprecated commands.

Author: tautschnig

src/CMakeLists.txt

@@ -30,7 +30,7 @@ macro(generic_bison name)
     endif()
 
     if(${BISON_VERSION} VERSION_GREATER "2.3")
-      set(bison_warnings_as_errors "-Werror")
+      set(bison_warnings_as_errors "-Werror -Wno-deprecated")
     endif()
     bison_target(
         parser

src/common

@@ -77,7 +77,7 @@ else ifeq ($(filter-out FreeBSD OpenBSD,$(BUILD_ENV_)),)
   ifeq ($(origin CXX),default)
     CXX    = clang++
   endif
-  YFLAGS ?= -v -Werror
+  YFLAGS ?= -v -Werror -Wno-deprecated
 else
   LINKLIB = ar rcT $@ $^
   LINKBIN = $(CXX) $(LINKFLAGS) -o $@ -Wl,--start-group $^ -Wl,--end-group $(LIBS)
@@ -90,7 +90,7 @@ else
     CXX    = g++
     #CXX    = icpc
   endif
-  YFLAGS ?= -v -Werror
+  YFLAGS ?= -v -Werror -Wno-deprecated
 endif
 ifeq ($(origin YACC),default)
   YACC   = bison
@@ -127,7 +127,7 @@ endif
 ifeq ($(origin YACC),default)
   YACC   = bison -y -Wno-error=yacc
 endif
-  YFLAGS ?= -v -Werror
+  YFLAGS ?= -v -Werror -Wno-deprecated
 ifeq ($(origin LEX),default)
   LEX    = flex
 endif
@@ -155,7 +155,7 @@ endif
 ifeq ($(origin YACC),default)
   YACC   = win_bison -y -Wno-error=yacc
 endif
-  YFLAGS ?= -v -Werror
+  YFLAGS ?= -v -Werror -Wno-deprecated
 ifeq ($(origin LEX),default)
   LEX    = win_flex
 endif