tweak compiler flags to reduce noise

remove a few that generate lots of warnings on ruby.h: - -Wcast-qual - -Wconversion add -Wextra back (it was removed in 2008)
sparklemotion · Mar 4, 2018 · 77be60c · 77be60c
1 parent b5b97bc
commit 77be60c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/ext/nokogiri/extconf.rb b/ext/nokogiri/extconf.rb
@@ -434,7 +434,7 @@ def using_system_libraries?
 
 if RbConfig::MAKEFILE_CONFIG['CC'] =~ /gcc/
   $CFLAGS << " -O3" unless $CFLAGS[/-O\d/]
-  $CFLAGS << " -Wall -Wcast-qual -Wwrite-strings -Wconversion -Wmissing-noreturn -Winline"
+  $CFLAGS << " -Wall -Wextra -Wwrite-strings -Wmissing-noreturn -Winline"
 end
 
 case