New package: gbl (#29834)

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

@@ -0,0 +1,31 @@
+# Copyright 2013-2022 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 Gbl(CMakePackage):
+    """General Broken Lines: Advanced track fitting library"""
+
+    homepage = "https://www.desy.de/~kleinwrt/GBL/doc/cpp/html/"
+    git      = "https://gitlab.desy.de/claus.kleinwort/general-broken-lines.git"
+
+    maintainers = ['iarspider']
+    tags = ['hep']
+
+    version('V02-04-01', commit="1061b643c6656fbf7ceba579997eb43f0a9e9d3c")
+    version('V02-01-03', commit="8acaade19c20e9ef23d1244a555fead6ef149c33")
+
+    variant('root', default=True, description='Support ROOT for user I/O')
+    depends_on('eigen', type=('build', 'link'))
+    depends_on('root', type=('build', 'link'), when='+root')
+
+    root_cmakelists_dir = 'cpp'
+
+    def cmake_args(self):
+        eigen_inc = self.spec['eigen'].prefix.include.eigen3
+        args = [self.define('EIGEN3_INCLUDE_DIR', eigen_inc),
+                self.define_from_variant('SUPPORT_ROOT', 'root')]
+        return args