From d4e014326ff1f30539cc73f2edbf266356dd1bcb Mon Sep 17 00:00:00 2001
From: Christian Ullrich <chris@chrullrich.net>
Date: Wed, 27 Apr 2016 08:57:08 +0200
Subject: [PATCH 1/2] Support passing arbitrary arguments to MSBuild.

This is particularly useful to pass /m, to perform a parallel build.
---
 doc/src/sgml/install-windows.sgml | 7 +++++++
 src/tools/msvc/build.pl           | 5 +++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/doc/src/sgml/install-windows.sgml b/doc/src/sgml/install-windows.sgml
index 74265fc..0e6f99e 100644
--- a/doc/src/sgml/install-windows.sgml
+++ b/doc/src/sgml/install-windows.sgml
@@ -137,6 +137,13 @@ $config->{python} = 'c:\python26';
 $ENV{PATH}=$ENV{PATH} . ';c:\some\where\bison\bin';
 </programlisting>
  </para>
+ <para>
+  To pass additional command line arguments to msbuild (Visual Studio 2010
+  and later):
+<programlisting>
+$ENV{MSBFLAGS}="/m";
+</programlisting>
+ </para>
 
  <sect2>
   <title>Requirements</title>
diff --git a/src/tools/msvc/build.pl b/src/tools/msvc/build.pl
index c4e4dc7..85109a2 100644
--- a/src/tools/msvc/build.pl
+++ b/src/tools/msvc/build.pl
@@ -38,6 +38,7 @@ my $vcver = Mkvcbuild::mkvcbuild($config);
 # check what sort of build we are doing
 
 my $bconf     = $ENV{CONFIG} || "Release";
+my $msbflags  = $ENV{MSBFLAGS} || "";
 my $buildwhat = $ARGV[1]     || "";
 if (uc($ARGV[0]) eq 'DEBUG')
 {
@@ -53,7 +54,7 @@ elsif (uc($ARGV[0]) ne "RELEASE")
 if ($buildwhat and $vcver >= 10.00)
 {
 	system(
-"msbuild $buildwhat.vcxproj /verbosity:normal /p:Configuration=$bconf");
+"msbuild $buildwhat.vcxproj $msbflags /verbosity:normal /p:Configuration=$bconf");
 }
 elsif ($buildwhat)
 {
@@ -61,7 +62,7 @@ elsif ($buildwhat)
 }
 else
 {
-	system("msbuild pgsql.sln /verbosity:normal /p:Configuration=$bconf");
+	system("msbuild pgsql.sln $msbflags /verbosity:normal /p:Configuration=$bconf");
 }
 
 # report status
-- 
2.8.1.windows.1