python: RPATH on fj (#17783)

* python: RPATH on fj

* python: patch _is_gcc

var/spack/repos/builtin/packages/python/fj-rpath-2.3.patch

+--- a/Lib/distutils/unixccompiler.py	2003-06-02 05:27:40.000000000 +1000
++++ b/Lib/distutils/unixccompiler.py	2017-05-13 13:52:45.554213616 +1000
+@@ -208,7 +208,8 @@
+         elif compiler[:3] == "gcc" or compiler[:3] == "g++":
+           return "-Wl,-R" + dir
+         else:
+-            return "-R" + dir
++            # Patched by spack to use GNU ld syntax by default:
++            return "-Wl,--enable-new-dtags,-R" + dir
+ 
+     def library_option(self, lib):
+         return "-l" + lib

var/spack/repos/builtin/packages/python/fj-rpath-3.1.patch

+--- a/Lib/distutils/unixccompiler.py	2009-05-09 21:55:12.000000000 +1000
++++ b/Lib/distutils/unixccompiler.py	2017-05-13 14:30:18.077518999 +1000
+@@ -215,7 +211,8 @@
+         return "-L" + dir
+
+     def _is_gcc(self, compiler_name):
+-        return "gcc" in compiler_name or "g++" in compiler_name
++        return "gcc" in compiler_name or "g++" in compiler_name \
++        or "fcc" in compiler_name or "FCC" in compiler_name
+
+     def runtime_library_dir_option(self, dir):
+         # XXX Hackish, at the very least.  See Python bug #445902:
+

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

@@ -186,6 +186,10 @@ class Python(AutotoolsPackage):
     patch('cray-rpath-2.3.patch', when='@2.3:3.0.1 platform=cray')
     patch('cray-rpath-3.1.patch', when='@3.1:3.99  platform=cray')
 
+    # Ensure that distutils chooses correct compiler option for RPATH on fj:
+    patch('fj-rpath-2.3.patch', when='@2.3:3.0.1 %fj')
+    patch('fj-rpath-3.1.patch', when='@3.1:3.99  %fj')
+
     # Fixes an alignment problem with more aggressive optimization in gcc8
     # https://github.com/python/cpython/commit/0b91f8a668201fc58fa732b8acc496caedfdbae0
     patch('gcc-8-2.7.14.patch', when='@2.7.14 %gcc@8:')