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-rw-r--r--src/perl/nxt_perl_psgi_layer.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/perl/nxt_perl_psgi_layer.h b/src/perl/nxt_perl_psgi_layer.h
index 3fa349c0..561d5153 100644
--- a/src/perl/nxt_perl_psgi_layer.h
+++ b/src/perl/nxt_perl_psgi_layer.h
@@ -8,6 +8,7 @@
#define _NXT_PERL_PSGI_LAYER_H_INCLUDED_
+#define _GNU_SOURCE
#include <EXTERN.h>
#include <XSUB.h>
#include <perl.h>