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-rw-r--r--ext/probeprofiler/extconf.rb2
-rw-r--r--ext/probeprofiler/probeprofiler.c2
2 files changed, 3 insertions, 1 deletions
diff --git a/ext/probeprofiler/extconf.rb b/ext/probeprofiler/extconf.rb
index 31cfc85c06..da94e654d9 100644
--- a/ext/probeprofiler/extconf.rb
+++ b/ext/probeprofiler/extconf.rb
@@ -1,2 +1,4 @@
require 'mkmf'
+$VPATH << "$(top_srcdir)"
+$INCFLAGS << " -I$(top_srcdir)"
create_makefile("probeprofiler")
diff --git a/ext/probeprofiler/probeprofiler.c b/ext/probeprofiler/probeprofiler.c
index 9ffb203673..fba4d85f46 100644
--- a/ext/probeprofiler/probeprofiler.c
+++ b/ext/probeprofiler/probeprofiler.c
@@ -1,4 +1,4 @@
-#include <ruby.h>
+#include <ruby/ruby.h>
#include <yarvcore.h>
static void