diff -Naur zstd-1.1.2-orig/contrib/pzstd/Makefile zstd-1.1.2/contrib/pzstd/Makefile
--- zstd-1.1.2-orig/contrib/pzstd/Makefile	2016-12-14 21:53:47.000000000 +0800
+++ zstd-1.1.2/contrib/pzstd/Makefile	2016-12-26 23:01:06.288232100 +0800
@@ -26,7 +26,7 @@
 
 # CFLAGS, CXXFLAGS, CPPFLAGS, and LDFLAGS are for the users to override
 CFLAGS   ?= -O3 -Wall -Wextra
-CXXFLAGS ?= -O3 -Wall -Wextra -pedantic -std=c++11
+CXXFLAGS ?= -O3 -Wall -Wextra -pedantic
 CPPFLAGS ?=
 LDFLAGS  ?=
 
@@ -37,7 +37,7 @@
 PZSTD_CPPFLAGS  = $(PZSTD_INC)
 PZSTD_CCXXFLAGS =
 PZSTD_CFLAGS    = $(PZSTD_CCXXFLAGS)
-PZSTD_CXXFLAGS  = $(PZSTD_CCXXFLAGS)
+PZSTD_CXXFLAGS  = $(PZSTD_CCXXFLAGS) -std=c++11
 PZSTD_LDFLAGS   =
 EXTRA_FLAGS     =
 ALL_CFLAGS      = $(EXTRA_FLAGS) $(CPPFLAGS) $(PZSTD_CPPFLAGS) $(CFLAGS)   $(PZSTD_CFLAGS)