New package: frontier-client (#21405)

var/spack/repos/builtin/packages/frontier-client/frontier-client.patch

@@ -0,0 +1,13 @@
+--- client/frontier_config.c	2020-07-28 09:20:59.456311478 +0200
++++ client/frontier_config.c	2020-07-28 09:26:49.147996572 +0200
+@@ -47,8 +47,8 @@
+ 
+ #define ENV_BUF_SIZE	1024
+ 
+-void *(*frontier_mem_alloc)(size_t size);
+-void (*frontier_mem_free)(void *ptr);
++extern void *(*frontier_mem_alloc)(size_t size);
++extern void (*frontier_mem_free)(void *ptr);
+ 
+ int frontier_pacparser_init(void);
+ 

var/spack/repos/builtin/packages/frontier-client/package.py

@@ -0,0 +1,38 @@
+# Copyright 2013-2021 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 FrontierClient(MakefilePackage):
+    """The Frontier distributed database caching system distributes data from
+       data sources to many client systems around the world. The name comes
+       from "N Tier" where N is any number and tiers are layers of locations
+       of distribution."""
+
+    homepage = "http://frontier.cern.ch/"
+    url      = "https://github.com/fermitools/frontier/archive/v2_9_1.tar.gz"
+
+    version('2_9_1',  sha256='d21370fbe142807966e3c2218ce361ea3bb573498e1b8387b801fb6641c3ed22')
+    version('2_9_0',  sha256='e58dba3f177c5b74609f244101a22a5c14d42bf019013fe2dba72c09f819c62a')
+    version('2_8_21', sha256='7df9ba61c3e1778aca75c5da6e45ee4d00b5c061d3f7162208e2fbd2ec266a9e')
+    version('2_8_20', sha256='81b0f45762d96a33f156e0238631a60eef910a176644e95c6c19a36824bef7e1')
+
+    depends_on('pacparser')
+    depends_on('expat')
+
+    patch('frontier-client.patch', level=0)
+
+    def edit(self, spec, prefix):
+        makefile = FileFilter('client/Makefile')
+        makefile.filter('EXPAT_DIR}/lib', 'EXPAT_DIR}/lib64')
+
+    def build(self, spec, prefix):
+        with working_dir('client'):
+            make('-j1', 'dist', 'PACPARSER_DIR=' + self.spec['pacparser'].prefix,
+                 'EXPAT_DIR=' + self.spec['expat'].prefix)
+
+    def install(self, spec, prefix):
+        install_tree(join_path('client', 'dist'), prefix)