[edk2] Unset MAKEFLAGS before make because parallel builds are broken.

[Richard W.M. Jones]

commit 2ffbb0bbfca516f21fa55ac2f09d17fc3d32bb09
Author: Richard W.M. Jones <rjones at redhat.com>
Date:   Tue May 21 20:15:34 2013 +0100

    Unset MAKEFLAGS before make because parallel builds are broken.

 edk2.spec |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/edk2.spec b/edk2.spec
index 22aed74..a0562e7 100644
--- a/edk2.spec
+++ b/edk2.spec
@@ -66,6 +66,8 @@ build EFI executables and ROMs using the GNU tools.
 %build
 source ./edksetup.sh
 
+# Build is broken if MAKEFLAGS contains -j option.
+unset MAKEFLAGS
 make -C $WORKSPACE/BaseTools
 
 %install