Sorted out spack.compilers vs var/spack/compilers

lib/spack/spack/cmd/compilers.py

@@ -31,13 +31,10 @@
 
 description = "List available compilers"
 
-
 def compilers(parser, args):
     tty.msg("Available compilers")
 
-    # Index compilers
     index = index_by(spack.compilers.supported_compilers(), 'name')
-
     for name, compilers in index.items():
-        tty.hline(name, char='=', color=spack.spec.compiler_color)
+        tty.hline(name, char='-', color=spack.spec.compiler_color)
         colify(compilers, indent=4)

lib/spack/spack/compiler.py

@@ -1,10 +1,11 @@
 import os
+from llnl.util.lang import memoized
 
 import spack.error
 from spack.version import Version
-from spack.util import Executable
+from spack.util.executable import Executable
+
 
-from subprocess import check_output
 
 
 def _verify_executables(*paths):

lib/spack/spack/compilers/__init__.py

@@ -27,21 +27,36 @@
 #
 from llnl.util.lang import memoized, list_modules
 
-import spack
-import spack.compilers.gcc
 import spack.spec
+from spack.util.executable import which
+
+
 
 @memoized
 def supported_compilers():
-    return [spack.spec.Compiler(c) for c in list_modules(spack.compilers_path)]
+    """Return a list of compiler types supported by Spack."""
+    return sorted(c for c in list_modules(spack.compilers_path))
 
 
-def supported(compiler):
-    return True
-#    return compiler in supported_compilers()
+def supported(compiler_spec):
+    """Test if a particular compiler is supported."""
+    if isinstance(compiler_spec, spack.spec.Compiler):
+        return compiler_spec.name in supported_compilers()
+
+    elif isinstance(compiler_spec, basestring):
+        return compiler_spec in supported_compilers()
+
+    else:
+        raise TypeError("compiler_spec must be string or spack.spec.Compiler")
 
 
 @memoized
 def default_compiler():
-    from spack.spec import Compiler
-    return Compiler('gcc', gcc.get_version())
+    """Get the spec for the default compiler supported by Spack.
+       Currently just returns the system's default gcc.
+
+       TODO: provide a better way to specify/find this on startup.
+    """
+    gcc = which('gcc', required=True)
+    version = gcc('-dumpversion', return_output=True)
+    return spack.spec.Compiler('gcc', version)

lib/spack/spack/compilers/clang.py

@@ -0,0 +1,41 @@
+##############################################################################
+# Copyright (c) 2013, Lawrence Livermore National Security, LLC.
+# Produced at the Lawrence Livermore National Laboratory.
+#
+# This file is part of Spack.
+# Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
+# LLNL-CODE-647188
+#
+# For details, see https://scalability-llnl.github.io/spack
+# Please also see the LICENSE file for our notice and the LGPL.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License (as published by
+# the Free Software Foundation) version 2.1 dated February 1999.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
+# conditions of the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+##############################################################################
+from spack.compiler import Compiler
+
+class Clang(Compiler):
+    # Subclasses use possible names of C compiler
+    cc_names = ['clang']
+
+    # Subclasses use possible names of C++ compiler
+    cxx_names = ['clang++']
+
+    # Subclasses use possible names of Fortran 77 compiler
+    f77_names = []
+
+    # Subclasses use possible names of Fortran 90 compiler
+    f90_names = []
+
+    def __init__(self, cc, cxx, f77, f90):
+        super(Gcc, self).__init__(cc, cxx, f77, f90)

lib/spack/spack/compilers/gcc.py

@@ -22,18 +22,20 @@
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-#
-# This is a stub module.  It should be expanded when we implement full
-# compiler support.
-#
+from spack.compiler import Compiler
 
-import subprocess
-from spack.version import Version
+class Gcc(Compiler):
+    # Subclasses use possible names of C compiler
+    cc_names = ['gcc']
 
-cc = 'gcc'
-cxx = 'g++'
-fortran = 'gfortran'
+    # Subclasses use possible names of C++ compiler
+    cxx_names = ['g++']
 
-def get_version():
-    v = subprocess.check_output([cc, '-dumpversion'])
-    return Version(v)
+    # Subclasses use possible names of Fortran 77 compiler
+    f77_names = ['gfortran']
+
+    # Subclasses use possible names of Fortran 90 compiler
+    f90_names = ['gfortran']
+
+    def __init__(self, cc, cxx, f77, f90):
+        super(Gcc, self).__init__(cc, cxx, f77, f90)

lib/spack/spack/compilers/intel.py

@@ -22,18 +22,20 @@
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
-#
-# This is a stub module.  It should be expanded when we implement full
-# compiler support.
-#
+from spack.compiler import Compiler
 
-import subprocess
-from spack.version import Version
+class Intel(Compiler):
+    # Subclasses use possible names of C compiler
+    cc_names = ['icc']
 
-cc = 'icc'
-cxx = 'icc'
-fortran = 'ifort'
+    # Subclasses use possible names of C++ compiler
+    cxx_names = ['icpc']
 
-def get_version():
-    v = subprocess.check_output([cc, '-dumpversion'])
-    return Version(v)
+    # Subclasses use possible names of Fortran 77 compiler
+    f77_names = ['ifort']
+
+    # Subclasses use possible names of Fortran 90 compiler
+    f90_names = ['ifort']
+
+    def __init__(self, cc, cxx, f77, f90):
+        super(Gcc, self).__init__(cc, cxx, f77, f90)

lib/spack/spack/globals.py

@@ -43,6 +43,7 @@
 lib_path       = join_path(prefix, "lib", "spack")
 build_env_path = join_path(lib_path, "env")
 module_path    = join_path(lib_path, "spack")
+compilers_path = join_path(module_path, "compilers")
 test_path      = join_path(module_path, "test")
 var_path       = join_path(prefix, "var", "spack")
 stage_path     = join_path(var_path, "stage")
@@ -50,9 +51,9 @@
 install_path   = join_path(prefix, "opt")
 
 #
-# Place to look for usable compiler installations
+# Place to look for usable compiler versions.
 #
-compilers_path = join_path(var_path, "compilers")
+compiler_version_path = join_path(var_path, "compilers")
 
 #
 # Set up the packages database.

lib/spack/spack/spec.py

@@ -173,16 +173,23 @@ class Compiler(object):
     """The Compiler field represents the compiler or range of compiler
        versions that a package should be built with.  Compilers have a
        name and a version list. """
-    def __init__(self, compiler_spec_like):
-        c = SpecParser().parse_compiler(compiler_spec_like)
-        self.name = c.name
-        self.versions = c.versions
+    def __init__(self, *args):
+        nargs = len(args)
+        if nargs == 1:
+            # If there is one argument, it's a spec to parse
+            c = SpecParser().parse_compiler(args[0])
+            self.name = c.name
+            self.versions = c.versions
 
+        elif nargs == 2:
+            name, version = args
+            self.name = name
+            self.versions = VersionList()
+            self.versions.add(ver(version))
 
-    def __init__(self, name, version):
-        self.name = name
-        self.versions = VersionList()
-        self.versions.add(version)
+        else:
+            raise TypeError(
+                "__init__ takes 1 or 2 arguments. (%d given)" % nargs)
 
 
     def _add_version(self, version):
@@ -776,11 +783,10 @@ def validate_names(self):
             if not spec.virtual:
                 spack.db.get(spec.name)
 
-            # validate compiler name in addition to the package name.
+            # validate compiler in addition to the package name.
             if spec.compiler:
-                compiler_name = spec.compiler.name
-                if not spack.compilers.supported(compiler_name):
-                    raise UnknownCompilerError(compiler_name)
+                if not spack.compilers.supported(spec.compiler):
+                    raise UnknownCompilerError(spec.compiler)
 
 
     def constrain(self, other, **kwargs):