Add blas_connector.cpp definition

Author: Critsium-xy

source/module_base/blas_connector.cpp

@@ -1,3 +1,5 @@
+#ifndef BLAS_CONNECTOR_CPP
+#define BLAS_CONNECTOR_CPP
 #include "blas_connector.h"
 
 #ifdef __DSP
@@ -531,4 +533,6 @@ void BlasConnector::copy(const long n, const std::complex<double> *a, const int
 	if (device_type == base_device::AbacusDevice_t::CpuDevice) {
 		zcopy_(&n, a, &incx, b, &incy);
 	}
-}
+}
+
+#endif