MPICH sets MPI compilers to use real compilers and not spack wrappers.

lib/spack/llnl/util/filesystem.py

@@ -38,7 +38,7 @@
 from spack.util.compression import ALLOWED_ARCHIVE_TYPES
 
 
-def filter_file(regex, repl, *filenames):
+def filter_file(regex, repl, *filenames, **kwargs):
     """Like sed, but uses python regular expressions.
 
        Filters every line of file through regex and replaces the file
@@ -49,16 +49,31 @@ def filter_file(regex, repl, *filenames):
        return a suitable replacement string.  If it is a string, it
        can contain ``\1``, ``\2``, etc. to represent back-substitution
        as sed would allow.
+
+       Keyword Options:
+         string[=False]         If True, treat regex as a plain string.
+         backup[=True]          Make a backup files suffixed with ~
+         ignore_absent[=False]  Ignore any files that don't exist.
     """
-    # Keep callables intact
-    if not hasattr(repl, '__call__'):
-        # Allow strings to use \1, \2, etc. for replacement, like sed
+    string = kwargs.get('string', False)
+    backup = kwargs.get('backup', True)
+    ignore_absent = kwargs.get('ignore_absent', False)
+
+    # Allow strings to use \1, \2, etc. for replacement, like sed
+    if not callable(repl):
         unescaped = repl.replace(r'\\', '\\')
         repl = lambda m: re.sub(
             r'\\([0-9])', lambda x: m.group(int(x.group(1))), unescaped)
 
+    if string:
+        regex = re.escape(regex)
+
     for filename in filenames:
         backup = filename + "~"
+
+        if ignore_absent and not os.path.exists(filename):
+            continue
+
         shutil.copy(filename, backup)
         try:
             with closing(open(backup)) as infile:
@@ -71,6 +86,10 @@ def filter_file(regex, repl, *filenames):
             shutil.move(backup, filename)
             raise
 
+        finally:
+            if not backup:
+                shutil.rmtree(backup, ignore_errors=True)
+
 
 def change_sed_delimiter(old_delim, new_delim, *filenames):
     """Find all sed search/replace commands and change the delimiter.

var/spack/packages/mpich/package.py

@@ -23,6 +23,7 @@
 # Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
+import os
 
 class Mpich(Package):
     """MPICH is a high performance and widely portable implementation of
@@ -53,3 +54,26 @@ def install(self, spec, prefix):
         configure(*config_args)
         make()
         make("install")
+
+        self.filter_compilers()
+
+
+    def filter_compilers(self):
+        """Run after install to make the MPI compilers use the
+           compilers that Spack built the package with.
+
+           If this isn't done, they'll have CC, CXX, F77, and FC set
+           to Spack's generic cc, c++, f77, and f90.  We want them to
+           be bound to whatever compiler they were built with.
+        """
+        bin = self.prefix.bin
+        mpicc  = os.path.join(bin, 'mpicc')
+        mpicxx = os.path.join(bin, 'mpicxx')
+        mpif77 = os.path.join(bin, 'mpif77')
+        mpif90 = os.path.join(bin, 'mpif90')
+
+        kwargs = { 'ignore_absent' : True, 'backup' : False, 'string' : True }
+        filter_file('CC="cc"',   'CC="%s"'  % self.compiler.cc,  mpicc,  **kwargs)
+        filter_file('CXX="c++"', 'CXX="%s"' % self.compiler.cxx, mpicxx, **kwargs)
+        filter_file('F77="f77"', 'F77="%s"' % self.compiler.f77, mpif77, **kwargs)
+        filter_file('FC="f90"',  'FC="%s"'  % self.compiler.fc,  mpif90, **kwargs)