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-rw-r--r--include/makeinclude/platform_sunos5_sunc++.GNU1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/makeinclude/platform_sunos5_sunc++.GNU b/include/makeinclude/platform_sunos5_sunc++.GNU
index e6715539bce..3b5403ea83c 100644
--- a/include/makeinclude/platform_sunos5_sunc++.GNU
+++ b/include/makeinclude/platform_sunos5_sunc++.GNU
@@ -189,6 +189,7 @@ ifeq ($(templates),explicit)
CPPFLAGS += -DACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION
endif
+CPPFLAGS += -D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED=1
CCFLAGS += $(TEMPLATES_FLAG)
DCFLAGS += -g
DCCFLAGS +=