# <sys/feature_tests.h> became XPG7-aware in s12_33, thus requiring building
# in C99 mode.  But for s12_32 and earlier, it would crap out in C99 mode
# unless _XPG6 was defined.  Since this is to work around an oddity with
# Solaris header files and build versions, this patch will not be offered
# upstream.
#
--- pigz-2.2.5/yarn.c.orig	2012-01-13 14:56:17.000000000 -0800
+++ pigz-2.2.5/yarn.c	2013-10-24 13:13:58.198937572 -0700
@@ -23,6 +23,7 @@
 #define _XOPEN_SOURCE 700
 #define _POSIX_C_SOURCE 200809L
 #define _THREAD_SAFE
+#define _XPG6
 
 /* use large file functions if available */
 #define _FILE_OFFSET_BITS 64