Enable the use of multiple CPUs/cores when building on MSVC. This only

affects the C compiler step - we still only build one target at a
time.

src/tools/msvc/Project.pm

@@ -3,7 +3,7 @@ package Project;
 #
 # Package that encapsulates a Visual C++ project file generation
 #
-# $PostgreSQL: pgsql/src/tools/msvc/Project.pm,v 1.19 2008/04/15 16:22:36 adunstan Exp $
+# $PostgreSQL: pgsql/src/tools/msvc/Project.pm,v 1.20 2009/07/27 07:11:15 mha Exp $
 #
 use Carp;
 use strict;
@@ -501,6 +501,7 @@ sub WriteConfiguration
 		PreprocessorDefinitions="WIN32;_WINDOWS;__WINDOWS__;__WIN32__;EXEC_BACKEND;WIN32_STACK_RLIMIT=4194304;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE$self->{defines}$p->{defs}"
 		StringPooling="$p->{strpool}"
 		RuntimeLibrary="$p->{runtime}" DisableSpecificWarnings="$self->{disablewarnings}"
+		AdditionalOptions="/MP"
 EOF
     print $f <<EOF;
 		AssemblerOutput="0" AssemblerListingLocation=".\\$cfgname\\$self->{name}\\" ObjectFile=".\\$cfgname\\$self->{name}\\"