libyogrt (package): add variant to enable static builds (#17535)

var/spack/repos/builtin/packages/libyogrt/package.py

@@ -38,6 +38,9 @@ class Libyogrt(AutotoolsPackage):
 
     conflicts('scheduler=lsf', when='@:1.22')
 
+    variant('static', default='False',
+            description="build static library")
+
     def url_for_version(self, version):
         if version < Version(1.21):
             return "https://github.com/LLNL/libyogrt/archive/%s.tar.gz" % version
@@ -51,4 +54,7 @@ def configure_args(self):
         if sched != "system":
             args.append('--with-%s=%s' % (sched, self.spec[sched].prefix))
 
+        if '+static' in self.spec:
+            args.append('--enable-static=yes')
+
         return args