diff --git a/var/spack/repos/builtin/packages/openblas/package.py b/var/spack/repos/builtin/packages/openblas/package.py
index 22e49daaa7b..d09ebd67390 100644
--- a/var/spack/repos/builtin/packages/openblas/package.py
+++ b/var/spack/repos/builtin/packages/openblas/package.py
@@ -48,6 +48,13 @@ class Openblas(Package):
     patch('make.patch')
 
     def install(self, spec, prefix):
+        # As of 06/2016 there is no mechanism to specify that packages which
+        # depends on Blas/Lapack need C or/and Fortran symbols. For now
+        # require both.
+        if self.compiler.f77 is None:
+            raise InstallError('OpenBLAS requires both C and Fortran ',
+                               'compilers!')
+
         # Configure fails to pick up fortran from FC=/abs/path/to/f77, but
         # works fine with FC=/abs/path/to/gfortran.
         # When mixing compilers make sure that
diff --git a/var/spack/repos/builtin/packages/openmpi/package.py b/var/spack/repos/builtin/packages/openmpi/package.py
index 0638628a6c7..be3d1342fcd 100644
--- a/var/spack/repos/builtin/packages/openmpi/package.py
+++ b/var/spack/repos/builtin/packages/openmpi/package.py
@@ -121,6 +121,13 @@ def verbs(self):
             return 'verbs'
 
     def install(self, spec, prefix):
+        # As of 06/2016 there is no mechanism to specify that packages which
+        # depends on MPI need C or/and Fortran implementation. For now
+        # require both.
+        if (self.compiler.f77 is None) or (self.compiler.fc is None):
+            raise InstallError('OpenMPI requires both C and Fortran ',
+                               'compilers!')
+
         config_args = ["--prefix=%s" % prefix,
                        "--with-hwloc=%s" % spec['hwloc'].prefix,
                        "--enable-shared",