diff --git a/bindings/SigarBuild.pm b/bindings/SigarBuild.pm
index 346ea4ea..597367e9 100644
--- a/bindings/SigarBuild.pm
+++ b/bindings/SigarBuild.pm
@@ -123,7 +123,7 @@ sub flags {
         push @cppflags, '-U_FILE_OFFSET_BITS';
     }
 
-    my(@src) = (<../../src/*.c>, <../../src/os/$os/*.c>);
+    my(@src) = (<../../src/*.c>, <../../src/os/$os/*.c>, <../../src/os/$os/*.cpp>);
 
     return {
         is_win32 => $is_win32,
diff --git a/bindings/ruby/extconf.rb b/bindings/ruby/extconf.rb
index 4ce0d3cc..648f6e6f 100644
--- a/bindings/ruby/extconf.rb
+++ b/bindings/ruby/extconf.rb
@@ -94,7 +94,7 @@ system('perl -Mlib=.. -MSigarBuild -e version_file ' +
 $distcleanfiles = ['rbsigar_generated.rx','sigar_version.c']
 #XXX seems mkmf forces basename on srcs
 #XXX should be linking against libsigar anyhow
-(Dir["../../src/*.c"] + Dir["#{osdir}/*.c"]).each do |file|
+(Dir["../../src/*.c"] + Dir["#{osdir}/*.c"] + Dir["#{osdir}/*.cpp"]).each do |file|
   cf = File.basename(file)
   print file + ' -> ' + cf + "\n"
   if is_win32