diff --git a/Makefile b/Makefile
index 40bacea..e80bb4e 100644
--- a/Makefile
+++ b/Makefile
@@ -17,7 +17,7 @@ OBJ = $(patsubst %.cpp,%.o,$(patsubst %.c,%.o,$(SRC)))
 INCLUDES = -I inc -I /usr/include/cryptopp -I sdk
 
 # C compiler flags (-g -O2 -Wall)
-CCFLAGS =   -O0 -g -fstack-protector-all -Wall #-non-call-exceptions
+CCFLAGS  = -Os -g -fstack-protector-all -Wall #-non-call-exceptions
 CCFLAGS += $(shell pkg-config --cflags libcurl fuse)
 CPPFLAGS =  -std=c++0x $(CCFLAGS) -D_GLIBCXX_DEBUG 
 
@@ -29,7 +29,7 @@ CXX= g++
 LIBS = 
 
 # compile flags
-LDFLAGS = -lcryptopp -lfreeimage -ldb_cxx
+LDFLAGS  = -lcryptopp -lfreeimage -ldb_cxx
 LDFLAGS += $(shell pkg-config --libs libcurl fuse)
 
 megafuse: $(OUT)
diff --git a/src/Config.cpp b/src/Config.cpp
index 2b57390..de7c291 100644
--- a/src/Config.cpp
+++ b/src/Config.cpp
@@ -15,14 +15,14 @@ Config* Config::getInstance()
 void Config::check_variable(int &var,std::string value,std::string name)
 {
     var=stoi(value);
-    printf("caricata la variabile %s con il valore %d\n",name.c_str(),var);
+    printf("Creating the variable %s with value %d\n",name.c_str(),var);
 
 }
 
 void Config::check_variable(std::string &var,std::string value,std::string name)
 {
     var = value;
-    printf("caricata la variabile %s con il valore %s\n",name.c_str(),value.c_str());
+    printf("reating the variable %s with value %s\n",name.c_str(),value.c_str());
 
 
 }
diff --git a/src/file_cache_row.cpp b/src/file_cache_row.cpp
index 4d0e096..a299272 100644
--- a/src/file_cache_row.cpp
+++ b/src/file_cache_row.cpp
@@ -7,6 +7,7 @@
 #include <fcntl.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <cmath>
 
 #include <megaclient.h>
 #include <sys/stat.h>
@@ -69,7 +70,7 @@ int CacheManager::numChunks(size_t pos)
 		end +=i*ChunkedHash::SEGSIZE;
 		if(end >= pos) return i;
 	}
-	return 8 + ceil(float(pos-end)/(8.0*ChunkedHash::SEGSIZE));
+	return 8 + std::ceil(float(pos-end)/(8.0*ChunkedHash::SEGSIZE));
 	
 	
 }