Add claw back into ICON

repos/c2sm/packages/icon-ham/package.py

@@ -4,6 +4,20 @@
 
 class IconHam(C2SMIcon):
 
+    claw_values = ('std', 'validate')
+    variant('claw',
+            default='none',
+            values=('none', ) + claw_values,
+            description='Enable CLAW preprocessing')
+
+    for x in claw_values:
+        depends_on('claw', type='build', when='claw={0}'.format(x))
+
+    conflicts('claw=validate', when='serialization=none')
+
+    for x in claw_values:
+        conflicts('+sct', when='claw={0}'.format(x))
+
     @run_before('build')
     def generate_hammoz_nml(self):
         with working_dir(self.configure_directory +
@@ -13,7 +27,34 @@ def generate_hammoz_nml(self):
     def configure_args(self):
         args = super().configure_args()
 
+        claw = self.spec.variants['claw'].value
+        if claw == 'none':
+            args.append('--disable-claw')
+        else:
+            args.extend([
+                '--enable-claw={0}'.format(claw),
+                'CLAW={0}'.format(self.spec['claw'].prefix.bin.clawfc)
+            ])
+            flags['CLAWFLAGS'].append(
+                self.spec['netcdf-fortran'].headers.include_flags)
+            if '+cdi-pio' in self.spec:
+                flags['CLAWFLAGS'].append(
+                    self.spec['libcdi-pio'].headers.include_flags)
+
         args.append('--enable-atm-phy-echam-submodels')
         args.append('--enable-hammoz')
 
         return args
+
+    def build(self, spec, prefix):
+        claw = self.spec.variants['claw'].value
+        if claw != 'none' and make_jobs > 8:
+            # Limit CLAW preprocessing to 8 parallel jobs to avoid
+            # claw_f_lib.sh: fork: retry: Resource temporarily unavailable
+            # ...
+            # Error: Could not create the Java Virtual Machine.
+            # Error: A fatal exception has occurred. Program will exit.
+            make.jobs = 8
+            make('preprocess')
+            make.jobs = make_jobs
+        make(*self.build_targets)