diff --git a/include_CLANG.mk b/include_CLANG.mk
index 0034ed6..913c44d 100644
--- a/include_CLANG.mk
+++ b/include_CLANG.mk
@@ -5,7 +5,7 @@ ifeq ($(ENABLE_OPENMP),true)
 OPENMP   = -fopenmp
 endif
 
-CFLAGS   = -Ofast -std=c99 -pthread $(OPENMP)
+CFLAGS   = -Ofast -ffreestanding -std=c99 -pthread $(OPENMP)
 LFLAGS   = -pthread $(OPENMP)
 DEFINES  = -D_GNU_SOURCE
 INCLUDES =
diff --git a/include_GCC.mk b/include_GCC.mk
index f854058..afdb9f1 100644
--- a/include_GCC.mk
+++ b/include_GCC.mk
@@ -5,7 +5,7 @@ ifeq ($(ENABLE_OPENMP),true)
 OPENMP   = -fopenmp
 endif
 
-CFLAGS   = -Ofast -std=c99 -pthread $(OPENMP)
+CFLAGS   = -Ofast -ffreestanding -std=c99 -pthread $(OPENMP)
 LFLAGS   = -pthread $(OPENMP)
 DEFINES  = -D_GNU_SOURCE
 INCLUDES =
diff --git a/include_ICC.mk b/include_ICC.mk
index 436c92e..8bc051d 100644
--- a/include_ICC.mk
+++ b/include_ICC.mk
@@ -5,7 +5,7 @@ ifeq ($(ENABLE_OPENMP),true)
 OPENMP   = -qopenmp
 endif
 
-CFLAGS   = -Ofast -xhost -std=c99 -pthread $(OPENMP)
+CFLAGS   = -qopt-report -Ofast -xHost -std=c99 -ffreestanding -pthread $(OPENMP)
 LFLAGS   = -pthread $(OPENMP)
 DEFINES  = -D_GNU_SOURCE
 INCLUDES =
diff --git a/src/copy.c b/src/copy.c
index 4c330e4..7e31a0c 100644
--- a/src/copy.c
+++ b/src/copy.c
@@ -36,7 +36,7 @@ double copy(
     double S, E;
 
     S = getTimeStamp();
-#pragma omp parallel for
+#pragma omp parallel for 
     for (int i=0; i<N; i++) {
         a[i] = b[i];
     }