diff --git a/configure.ac b/configure.ac
index de4949c..d3c9471 100644
--- a/configure.ac
+++ b/configure.ac
@@ -246,10 +246,41 @@ fi
 
 ## Enable GPU offloading
 
-# OpenACC offloading
-AC_ARG_ENABLE(openacc, [AS_HELP_STRING([--enable-openacc],[Use OpenACC-offloaded functions])], HAVE_OPENACC_OFFLOAD=$enableval, HAVE_OPENACC_OFFLOAD=no)
-AS_IF([test "$HAVE_OPENACC_OFFLOAD" = "yes"], [
+# GPU offloading
+AC_ARG_ENABLE(gpu, [AS_HELP_STRING([--enable-gpu],[openmp|openacc : Use GPU-offloaded functions])], enable_gpu=$enableval, enable_gpu=no)
+AS_IF([test "$enable_gpu" = "yes"], [enable_gpu="openmp"])
+
+# OpenMP offloading
+HAVE_OPENMP_OFFLOAD="no"
+AS_IF([test "$enable_gpu" = "openmp"], [
+  AC_DEFINE([HAVE_OPENMP_OFFLOAD], [1], [If defined, activate OpenMP-offloaded routines])
+  HAVE_OPENMP_OFFLOAD="yes"
+  case $CC in
+
+    *gcc*)
+          CFLAGS="$CFLAGS -fopenmp"
+          ;;
+    *nvc*)
+          CFLAGS="$CFLAGS -mp=gpu"
+          ;;
+  esac
+
+  case $FC in
+
+    *gfortran*)
+          FCFLAGS="$FCFLAGS -fopenmp"
+          ;;
+    *nvfortran*)
+          FCFLAGS="$FCFLAGS -mp=gpu"
+          ;;
+  esac]
+)
+
+# OpenMP offloading
+HAVE_OPENACC_OFFLOAD="no"
+AS_IF([test "$enable_gpu" = "openacc"], [
   AC_DEFINE([HAVE_OPENACC_OFFLOAD], [1], [If defined, activate OpenACC-offloaded routines])
+  HAVE_OPENACC_OFFLOAD="yes"
   case $CC in
 
     *gcc*)
@@ -430,6 +461,7 @@ LDFLAGS:........: ${LDFLAGS}
 LIBS............: ${LIBS}
 USE CHAMELEON...: ${with_chameleon}
 HPC version.....: ${HAVE_HPC}
+OpenMP offload..: ${HAVE_OPENMP_OFFLOAD}
 OpenACC offload.: ${HAVE_OPENACC_OFFLOAD}
 cuBLAS offload..: ${HAVE_CUBLAS_OFFLOAD}