partial checkin

lib/spack/spack/compiler.py

@@ -0,0 +1,57 @@
+import os
+
+import spack.error
+from spack.version import Version
+from spack.util import Executable
+
+from subprocess import check_output
+
+
+def _verify_compiler(*paths):
+    for path in paths:
+        if not os.path.isfile(path) and os.access(path, os.X_OK):
+            raise InvalidCompilerPathError(path)
+
+
+class Compiler(object):
+    """This class encapsulates a Spack "compiler", which includes C,
+       C++, Fortran, and F90 compilers.  Subclasses should implement
+       support for specific compilers, their possible names, arguments,
+       and how to identify the particular type of compiler."""
+
+    # Subclasses use possible names of C compiler
+    cc_names = []
+
+    # Subclasses use possible names of C++ compiler
+    cxx_names = []
+
+    # Subclasses use possible names of Fortran 77 compiler
+    f77_names = []
+
+    # Subclasses use possible names of Fortran 90 compiler
+    f90_names = []
+
+    # Names of generic arguments used by this compiler
+    arg_version = '-dumpversion'
+    arg_rpath   = '-Wl,-rpath,%s'
+
+
+    def __init__(self, cc, cxx, f77, f90):
+        _verify_compiler(cc, cxx, f77, f90)
+        self.cc  = Executable(cc)
+        self.cxx = Executable(cxx)
+        self.f77 = Executable(f77)
+        self.f90 = Executable(f90)
+
+
+    @property
+    @memoized
+    def version(self):
+        v = self.cc(arg_version)
+        return Version(v)
+
+
+class InvalidCompilerPathError(spack.error.SpackError):
+    def __init__(self, path):
+        super(InvalidCompilerPathError, self).__init__(
+            "'%s' is not a valid compiler." % path)