Fix up Makefiles, and fix include issues compiling with gcc

contrib/pzstd/Makefile

@@ -11,12 +11,10 @@ ZSTDDIR = ../../lib
 PROGDIR = ../../programs
 
 CPPFLAGS = -I$(ZSTDDIR) -I$(ZSTDDIR)/common -I$(ZSTDDIR)/dictBuilder -I$(PROGDIR) -I.
-CFLAGS  ?= -O3
-CFLAGS  += -Wall -Wextra -Wcast-qual -Wcast-align -Wstrict-aliasing=1 \
-           -Wswitch-enum -Wdeclaration-after-statement -Wstrict-prototypes -Wundef \
-		 			-std=c++11
-CFLAGS  += $(MOREFLAGS)
-FLAGS    = $(CPPFLAGS) $(CFLAGS) $(LDFLAGS)
+CXXFLAGS  ?= -O3
+CXXFLAGS  += -std=c++11
+CXXFLAGS  += $(MOREFLAGS)
+FLAGS    = $(CPPFLAGS) $(CXXFLAGS) $(LDFLAGS)
 
 
 ZSTDCOMMON_FILES := $(ZSTDDIR)/common/*.c

contrib/pzstd/Options.cpp

@@ -9,6 +9,7 @@
 #include "Options.h"
 
 #include <cstdio>
+#include <cstring>
 
 namespace pzstd {
 

contrib/pzstd/test/Makefile

@@ -24,10 +24,10 @@ GTEST_LIB ?= -L $(PZSTDDIR)/googletest/build/googlemock/gtest
 
 CPPFLAGS = -I$(PZSTDDIR) $(GTEST_INC) $(GTEST_LIB) -I$(ZSTDDIR)/common -I$(PROGDIR)
 
-CFLAGS  ?= -O3
-CFLAGS  += -std=c++11
-CFLAGS  += $(MOREFLAGS)
-FLAGS    = $(CPPFLAGS) $(CFLAGS) $(LDFLAGS)
+CXXFLAGS  ?= -O3
+CXXFLAGS  += -std=c++11
+CXXFLAGS  += $(MOREFLAGS)
+FLAGS    = $(CPPFLAGS) $(CXXFLAGS) $(LDFLAGS)
 
 datagen.o: $(PROGDIR)/datagen.*
 	$(CXX) $(FLAGS) $(PROGDIR)/datagen.c -c -o $@

contrib/pzstd/utils/Range.h

@@ -16,6 +16,7 @@
 #include "utils/Likely.h"
 
 #include <cstddef>
+#include <cstring>
 #include <stdexcept>
 #include <string>
 #include <type_traits>

contrib/pzstd/utils/test/Makefile

@@ -21,10 +21,10 @@ GTEST_INC ?= -isystem $(PZSTDDIR)/googletest/googletest/include
 GTEST_LIB ?= -L $(PZSTDDIR)/googletest/build/googlemock/gtest
 
 CPPFLAGS = -I$(PZSTDDIR) $(GTEST_INC) $(GTEST_LIB)
-CFLAGS  ?= -O3
-CFLAGS  += -std=c++11
+CXXFLAGS  ?= -O3
+CXXFLAGS  += -std=c++11
 CFLAGS  += $(MOREFLAGS)
-FLAGS    = $(CPPFLAGS) $(CFLAGS) $(LDFLAGS)
+FLAGS    = $(CPPFLAGS) $(CXXFLAGS) $(LDFLAGS)
 
 %: %.cpp
 	$(CXX) $(FLAGS) -lgtest -lgtest_main $^ -o $@$(EXT)