diff --git a/Makefile b/Makefile
index 895e252..3464afb 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,10 @@
 PLATFORM_CCFLAGS= -DROCKSDB_PLATFORM_POSIX -DROCKSDB_LIB_IO_POSIX  -DOS_LINUX -fno-builtin-memcmp -DROCKSDB_FALLOCATE_PRESENT -DSNAPPY -DGFLAGS=1 -DZLIB -DBZIP2 -DLZ4 -DZSTD -DROCKSDB_MALLOC_USABLE_SIZE -DROCKSDB_PTHREAD_ADAPTIVE_MUTEX -DROCKSDB_BACKTRACE -DROCKSDB_RANGESYNC_PRESENT -DROCKSDB_SCHED_GETCPU_PRESENT -march=native  -DROCKSDB_SUPPORT_THREAD_LOCAL
 PLATFORM_CXXFLAGS=-std=c++11  -DROCKSDB_PLATFORM_POSIX -DROCKSDB_LIB_IO_POSIX  -DOS_LINUX -fno-builtin-memcmp -DROCKSDB_FALLOCATE_PRESENT -DSNAPPY -DGFLAGS=1 -DZLIB -DBZIP2 -DLZ4 -DZSTD -DROCKSDB_MALLOC_USABLE_SIZE -DROCKSDB_PTHREAD_ADAPTIVE_MUTEX -DROCKSDB_BACKTRACE -DROCKSDB_RANGESYNC_PRESENT -DROCKSDB_SCHED_GETCPU_PRESENT -march=native  -DROCKSDB_SUPPORT_THREAD_LOCAL
 PLATFORM=OS_LINUX
-PLATFORM_LDFLAGS= -lpthread -lrt -lsnappy -lgflags -lz -lbz2 -llz4 -lzstd
+PLATFORM_LDFLAGS= -lpthread -lrt -lsnappy -lz -lbz2 -llz4 -lzstd
 
-CXXFLAGS = -Wall -Wno-reorder -I/usr/local/include -g -std=c++11 
+CXXFLAGS = -Wall -Wno-reorder -I/usr/local/include -g -std=c++11  -Ofast -march=k8
+CFLAGS = -Wall -I/usr/local/include -g -std=gnu99  -O2 -march=k8
 
 ARFLAGS = ${EXTRA_ARFLAGS} rs
 
@@ -18,7 +19,10 @@
 	$(CXX) $(CXXFLAGS) -L. -L/usr/local/lib $@.cc -o$@ collocatordb.o -lrocksdb $(PLATFORM_LDFLAGS) $(PLATFORM_CXXFLAGS) $(EXEC_LDFLAGS)
 
 c_testcdb: c_testcdb.c collocatordb.h collocatordb.o Makefile
-	$(CC) $(CFLAGS) -L. -L/usr/local/lib $@.c -o$@ collocatordb.o -lstdc++ -lm -lrocksdb $(PLATFORM_LDFLAGS) $(PLATFORM_CXXFLAGS) $(EXEC_LDFLAGS)
+	$(CC) $(CFLAGS) -L. -L/usr/local/lib $@.c -o$@ collocatordb.o -std=gnu99 -lstdc++ -lm -lrocksdb $(PLATFORM_LDFLAGS) $(PLATFORM_CCFLAGS) $(EXEC_LDFLAGS)
+
+c_testanalysis: c_testanalysis.c collocatordb.h collocatordb.o Makefile
+	$(CC) $(CFLAGS) -L. -L/usr/local/lib $@.c -o$@ collocatordb.o -std=gnu99 -lstdc++ -lm -lrocksdb $(PLATFORM_LDFLAGS) $(PLATFORM_CCFLAGS) $(EXEC_LDFLAGS)
 
 collocatordb: collocatordb.cc Makefile
 	$(CXX) $(CXXFLAGS) -L/usr/local/lib $@.cc -o$@ -lrocksdb $(PLATFORM_LDFLAGS) $(PLATFORM_CXXFLAGS) $(EXEC_LDFLAGS)