mpiserial: rework installation (spack#40762)

var/spack/repos/builtin/packages/mpi-serial/package.py

@@ -3,6 +3,8 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
+import os
+
 from spack.package import *
 
 
@@ -31,8 +33,6 @@ class MpiSerial(AutotoolsPackage):
         description="Specify the size of Fortran double precision variables",
     )
 
-    patch("install.patch")
-
     provides("mpi")
 
     def flag_handler(self, name, flags):
@@ -41,8 +41,7 @@ def flag_handler(self, name, flags):
 
         if name == "cflags":
             config_flags.append(self.compiler.cc_pic_flag)
-
-            if spec.compiler.name in ["oneapi"]:
+            if spec.satisfies("%oneapi"):
                 # OneAPI fails due to these standards checks
                 config_flags.append("-Wno-error=implicit-int")
                 config_flags.append("-Wno-error=implicit-function-declaration")
@@ -62,3 +61,14 @@ def configure_args(self):
             args.extend(["--enable-fort-double={0}".format(doublesize)])
 
         return args
+
+    def install(self, spec, prefix):
+        mkdir(prefix.lib)
+        mkdir(prefix.include)
+        install("libmpi-serial.a", prefix.lib)
+        install("mpi.h", prefix.include)
+        install("mpif.h", prefix.include)
+        if os.path.isfile("mpi.mod"):
+            install("mpi.mod", prefix.include)
+        if os.path.isfile("MPI.mod"):
+            install("MPI.mod", prefix.include)