g++ -g -Wall -Werror -I. -I./include -DOS_LINUX -fno-builtin-memcmp -DLEVELDB_PLATFORM_POSIX -DGFLAGS -O2 -fno-omit-frame-pointer -momit-leaf-frame-pointer -std=gnu++0x -Woverloaded-virtual -c db/db_test.cc -o db/db_test.o 
In file included from db/db_test.cc:27:0:
db/db_test.cc: In member function ‘void rocksdb::_Test_TransactionLogIteratorCorruptedLog::_Run()’:
db/db_test.cc:4108:75: error: ‘truncate’ was not declared in this scope
       truncate(logfilePath.c_str(), wal_files.front()->SizeFileBytes() / 2)     
                                                                           ^
./util/testharness.h:111:78: note: in definition of macro ‘ASSERT_EQ’
 #define ASSERT_EQ(a,b) ::rocksdb::test::Tester(__FILE__, __LINE__).IsEq((a),(b))
                                                                              ^
make: *** [db/db_test.o] Error 1

#include <unistd.h>
#include <sys/types.h>