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diff --git a/var/spack/repos/builtin/packages/regcm/package.py b/var/spack/repos/builtin/packages/regcm/package.py
new file mode 100644
index 0000000000..32fde4885b
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+++ b/var/spack/repos/builtin/packages/regcm/package.py
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+# Copyright 2013-2018 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+
+
+class Regcm(AutotoolsPackage):
+    """RegCM ICTP Regional Climate Model."""
+
+    homepage = 'https://gforge.ictp.it/gf/project/regcm/'
+
+    version('4.7.0', sha256='456631c10dcb83d70e51c3babda2f7a1aa41ed9e60cb4209deb3764655267519',
+            url='https://gforge.ictp.it/gf/download/frsrelease/259/1845/RegCM-4.7.0.tar.gz')
+
+    variant('debug', default=False,
+            description='Build RegCM using debug options.')
+    variant('profile', default=False,
+            description='Build RegCM using profiling options.')
+    variant('singleprecision', default=False,
+            description='Build RegCM using single precision float type.')
+
+    # On Intel and PGI compilers, multiple archs can be built at the same time,
+    # producing a so-called fat binary. Unfortunately, gcc builds only the last
+    # architecture provided (in the configure), so we allow a single arch.
+    extensions = ('knl', 'skl', 'bdw', 'nhl')
+    variant('extension', default=None, values=extensions, multi=True,
+            description='Build extensions for a specific Intel architecture.')
+
+    depends_on('netcdf')
+    depends_on('netcdf-fortran')
+    depends_on('hdf5')
+    depends_on('mpi')
+
+    # 'make' sometimes crashes when compiling with more than 10-12 cores.
+    # Moreover, parallel compile time is ~ 1m 30s, while serial is ~ 50s.
+    parallel = False
+
+    def flag_handler(self, name, flags):
+        if name == 'fflags' and self.compiler.fc.endswith('gfortran'):
+            flags.extend(['-Wall', '-Wextra', '-Warray-temporaries',
+                          '-Wconversion', '-fimplicit-none', '-fbacktrace',
+                          '-ffree-line-length-0', '-finit-real=nan',
+                          '-ffpe-trap=zero,overflow,underflow', '-fcheck=all'])
+
+        elif name == 'ldlibs':
+            flags.extend(['-lnetcdff', '-lnetcdf'])
+            if self.compiler.fc.endswith('gfortran'):
+                flags.extend(['-lm', '-ldl'])
+            else:
+                flags.extend(['-lhdf5_hl', '-lhdf5', '-lz'])
+
+        return (None, None, flags)
+
+    def configure_args(self):
+        args = ['--enable-shared']
+
+        for opt in ('debug', 'profile', 'singleprecision'):
+            if '+{0}'.format(opt) in self.spec:
+                args.append('--enable-' + opt)
+
+        for ext in self.extensions:
+            if 'extension={0}'.format(ext) in self.spec:
+                args.append('--enable-' + ext)
+                break
+
+        # RegCM complains when compiled with gfortran, and unfortunately FFLAGS
+        # is ignored by the configure, so we need to set the option in FCFLAGS.
+        if self.compiler.fc.endswith('gfortran'):
+            args.append('FCFLAGS=-fno-range-check')
+
+        return args