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-rw-r--r--ext/fiddle/extconf.rb14
1 files changed, 14 insertions, 0 deletions
diff --git a/ext/fiddle/extconf.rb b/ext/fiddle/extconf.rb
index 03b0ac27656..95589028d05 100644
--- a/ext/fiddle/extconf.rb
+++ b/ext/fiddle/extconf.rb
@@ -19,6 +19,20 @@ end
have_header 'sys/mman.h'
+config = File.read(RbConfig.expand(File.join($arch_hdrdir, "ruby/config.h")))
+types = {"SIZE_T"=>"SSIZE_T", "PTRDIFF_T"=>nil, "INTPTR_T"=>nil}
+types.each do |type, signed|
+ if /^\#define\s+SIZEOF_#{type}\s+(SIZEOF_(.+)|\d+)/ =~ config
+ if size = $2 and size != 'VOIDP'
+ size = types.fetch(size) {size}
+ $defs << format("-DTYPE_%s=TYPE_%s", signed||type, size)
+ end
+ if signed
+ check_signedness(type.downcase, "stddef.h")
+ end
+ end
+end
+
create_makefile 'fiddle'
# :startdoc: