diff --git a/arch/MERCATOR/arch-X64_AA_GCC_OMPI.fcm b/arch/MERCATOR/arch-X64_AA_GCC_OMPI.fcm
new file mode 100644
index 0000000000000000000000000000000000000000..c47e62103faa34ef2a7e74b6cea89e85ab5a8b90
--- /dev/null
+++ b/arch/MERCATOR/arch-X64_AA_GCC_OMPI.fcm
@@ -0,0 +1,59 @@
+# compiler options for AA (using GCC compiler)
+#
+#
+# NCDF_INC netcdf4 include file
+# NCDF_LIB netcdf4 library
+# XIOS_INC xios include file (taken into accound only if key_xios is activated)
+# XIOS_LIB xios library (taken into accound only if key_xios is activated)
+# OASIS_INC oasis include file (taken into accound only if key_oasis3 is activated)
+# OASIS_LIB oasis library (taken into accound only if key_oasis3 is activated)
+#
+# FC Fortran compiler command
+# FCFLAGS Fortran compiler flags
+# FFLAGS Fortran 77 compiler flags
+# LD linker
+# LDFLAGS linker flags, e.g. -L<lib dir> if you have libraries
+# FPPFLAGS pre-processing flags
+# AR assembler
+# ARFLAGS assembler flags
+# MK make
+# USER_INC complete list of include files
+# USER_LIB complete list of libraries to pass to the linker
+# CC C compiler used to compile conv for AGRIF
+# CFLAGS compiler flags used with CC
+#
+# Note that:
+# - unix variables "$..." are accpeted and will be evaluated before calling fcm.
+# - fcm variables are starting with a % (and not a $)
+#
+#---------------------------------------------------------------------------------------------
+#---------------------------------------------------------------------------------------------
+# All NETCDF and HDF paths are empty as they are automatically defined through environment
+# variables by the load of modules
+#---------------------------------------------------------------------------------------------
+#---------------------------------------------------------------------------------------------
+#
+#
+%NCDF_INC ${NETCDF4_INCLUDE}
+%NCDF_LIB -L${NETCDF4_DIR}/lib -lnetcdff -lnetcdf -L${HDF5_DIR}/lib -lhdf5_hl -lm
+%XIOS_INC -I${XIOS_INC}
+%XIOS_LIB -L${XIOS_LIB} -lxios -lstdc++
+%OASIS_INC -I${OASIS_DIR}/build/lib/mct -I${OASIS_DIR}/build/lib/psmile.MPI1
+%OASIS_LIB -L${OASIS_DIR}/lib -lpsmile.MPI1 -lmct -lmpeu -lscrip
+
+%CPP cpp -Dkey_nosignedzero
+%FC mpif90 -c -cpp
+# O3 breaks reproduci/restartabi-lity with gcc/12.2.0
+%FCFLAGS -fdefault-real-8 -O2 -funroll-all-loops -fcray-pointer -ffree-line-length-none -fallow-argument-mismatch -Wno-missing-include-dirs
+%FFLAGS %FCFLAGS
+%LD mpif90
+%LDFLAGS -Wl,-rpath,${HDF5_DIR}/lib -Wl,-rpath=${NETCDF4_DIR}/lib -Wl,-rpath=${XIOS_DIR}/lib
+%FPPFLAGS -P -traditional
+%AR ar
+%ARFLAGS rs
+%MK make
+%USER_INC %XIOS_INC %OASIS_INC %NCDF_INC
+%USER_LIB %XIOS_LIB %OASIS_LIB %NCDF_LIB
+
+%CC gcc
+%CFLAGS -O0 -fcommon
diff --git a/arch/MERCATOR/arch-X64_AA_GCC_OMPI_DEBUG.fcm b/arch/MERCATOR/arch-X64_AA_GCC_OMPI_DEBUG.fcm
new file mode 100644
index 0000000000000000000000000000000000000000..bbd8eb1801893e234b4cdd7cd57db3d4ad52aab6
--- /dev/null
+++ b/arch/MERCATOR/arch-X64_AA_GCC_OMPI_DEBUG.fcm
@@ -0,0 +1,58 @@
+# compiler options for AA (using GCC compiler)
+#
+#
+# NCDF_INC netcdf4 include file
+# NCDF_LIB netcdf4 library
+# XIOS_INC xios include file (taken into accound only if key_xios is activated)
+# XIOS_LIB xios library (taken into accound only if key_xios is activated)
+# OASIS_INC oasis include file (taken into accound only if key_oasis3 is activated)
+# OASIS_LIB oasis library (taken into accound only if key_oasis3 is activated)
+#
+# FC Fortran compiler command
+# FCFLAGS Fortran compiler flags
+# FFLAGS Fortran 77 compiler flags
+# LD linker
+# LDFLAGS linker flags, e.g. -L<lib dir> if you have libraries
+# FPPFLAGS pre-processing flags
+# AR assembler
+# ARFLAGS assembler flags
+# MK make
+# USER_INC complete list of include files
+# USER_LIB complete list of libraries to pass to the linker
+# CC C compiler used to compile conv for AGRIF
+# CFLAGS compiler flags used with CC
+#
+# Note that:
+# - unix variables "$..." are accpeted and will be evaluated before calling fcm.
+# - fcm variables are starting with a % (and not a $)
+#
+#---------------------------------------------------------------------------------------------
+#---------------------------------------------------------------------------------------------
+# All NETCDF and HDF paths are empty as they are automatically defined through environment
+# variables by the load of modules
+#---------------------------------------------------------------------------------------------
+#---------------------------------------------------------------------------------------------
+#
+#
+%NCDF_INC ${NETCDF4_INCLUDE}
+%NCDF_LIB -L${NETCDF4_DIR}/lib -lnetcdff -lnetcdf -L${HDF5_DIR}/lib -lhdf5_hl -lm
+%XIOS_INC -I${XIOS_INC}
+%XIOS_LIB -L${XIOS_LIB} -lxios -lstdc++
+%OASIS_INC -I${OASIS_DIR}/build/lib/mct -I${OASIS_DIR}/build/lib/psmile.MPI1
+%OASIS_LIB -L${OASIS_DIR}/lib -lpsmile.MPI1 -lmct -lmpeu -lscrip
+
+%CPP cpp -Dkey_nosignedzero
+%FC mpif90 -c -cpp
+%FCFLAGS -fdefault-real-8 -Og -g -fbacktrace -funroll-all-loops -fcray-pointer -ffree-line-length-none -fcheck=all,no-array-temps -finit-real=nan -ffpe-trap=invalid,zero,overflow -ffpe-summary=invalid,zero,overflow -fallow-argument-mismatch -Wno-missing-include-dirs
+%FFLAGS %FCFLAGS
+%LD mpif90
+%LDFLAGS -Wl,-rpath,${HDF5_DIR}/lib -Wl,-rpath=${NETCDF4_DIR}/lib -Wl,-rpath=${XIOS_DIR}/lib
+%FPPFLAGS -P -traditional
+%AR ar
+%ARFLAGS rs
+%MK make
+%USER_INC %XIOS_INC %OASIS_INC %NCDF_INC
+%USER_LIB %XIOS_LIB %OASIS_LIB %NCDF_LIB
+
+%CC gcc
+%CFLAGS -O0 -fcommon