Merge pull request #43 from FNALssi/add_gcc_runtime

adding gcc-runtime package

packages/gcc-runtime/package.py

@@ -0,0 +1,49 @@
+# Copyright 2013-2023 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.package import *
+import os
+
+
+class GccRuntime(Package):
+    """FIXME: Put a proper description of your package here."""
+
+    homepage = "https://github.com/FNALssi/"
+    url = "file:///dev/null"
+
+    maintainers("marcmengel")
+
+    version("see_compiler", sha256="364fd6d448b2398150a4d8aa3a3d3564a373aeb7dfb3a477f56685a356c88159")
+
+    def url_for_version(self, version):
+
+        if not os.access("/tmp/empty.tar",os.R_OK):
+            tdir = "/tmp/empty" + str(os.getpid())
+            os.mkdir(tdir)
+            tar=which("tar")
+            with working_dir(tdir):
+                # --mtime=@0 gives consistent tarfile checksum...
+                tar("cf", "/tmp/empty.tar", ".", "--mtime=@0")
+            os.rmdir(tdir)
+
+        url = 'file:///tmp/empty.tar'
+        return url
+
+
+    def install(self, spec, prefix):
+         libdir=''
+         cdir = os.path.dirname(os.path.dirname(self.compiler.cxx))
+         # find shortest pathname in cdir that has libstdc++.so in it...
+         for path, dirnames, filenames in os.walk(cdir):
+             if 'libstdc++.so' in filenames:
+                 if not libdir or len(path) < len(libdir):
+                     libdir = path
+         if libdir:
+             os.makedirs(prefix.lib)
+             install_tree(libdir, prefix.lib)
+
+    def setup_dependent_runtime_environment(self, env):
+        env.append_flags("LDFLAGS", "-L"+self.prefix.lib)