DuetPkg: Add POSTBUILD in DSC files to run post-build automatically

https://bugzilla.tianocore.org/show_bug.cgi?id=220

Currently, the post-build scripts PostBuild.bat/PostBuild.sh in DuetPkg
need to be run manually. Especially for Windows batch script, it also
requires users to set the build options (like tool chain, target and arch)
in file Conf/target.txt. If users using command line options via '-t' or
'-a', the post-build script won't work properly.

The package DSC files now support the feature to execute post-build script
automatically by adding a 'POSTBUILD' definition. This feature also passes
the build options into the post-build script as parameters. This commit
uses this feature to make the post-build works for DuetPkg more
user-friendly. Also, ReadMe.txt is updated to reflect the new steps for
UEFI Emulation (DUET) development.

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>

1 files changed, 24 insertions, 36 deletions

diff --git a/DuetPkg/PostBuild.sh b/DuetPkg/PostBuild.sh
index 6f307e1c7e..524c9d7047 100755
--- a/DuetPkg/PostBuild.sh
+++ b/DuetPkg/PostBuild.sh
@@ -2,9 +2,7 @@
 
 ## @file
 #
-#  Currently, Build system does not provide post build mechanism for module
-#  and platform building, so just use a sh file to do post build commands.
-#  Originally, following post building command is for EfiLoader module.
+#  Post build script that will be automatically run after build.
 #
 #  Copyright (c) 2010 - 2016, Intel Corporation. All rights reserved.<BR>
 #
@@ -26,43 +24,33 @@ fi
 
 export BOOTSECTOR_BIN_DIR=$WORKSPACE/DuetPkg/BootSector/bin
 export PROCESSOR=""
-if [ \
-     -z "$1" -o \
-     "$1" = "-?" -o \
-     "$1" = "-h" -o \
-     "$1" = "--help" \
-   ]
-then
-    echo Error! Please specific the architecture.
-    echo Usage: "./PostBuild.sh [IA32|X64] [UNIXGCC|GCC44]"
+export TOOLTAG=""
+
+while [ $# -gt 0 ]; do
+    if [ "$1" = "-a" ]; then
+        export PROCESSOR=$2
+    elif [ "$1" = "-t" ]; then
+        export TOOLTAG=$2
+    elif [ "$1" = "-h" ]; then
+        echo Usage: This script will be run automatically after build.
+        return 1
+    fi
+    shift
+    shift
+done
+
+if [ "$PROCESSOR" = "" -o "$TOOLTAG" = "" ]; then
+    echo Usage: This script will be run automatically after build.
+    return 1
 fi
 
-case "$1" in
-   IA32)
-     export PROCESSOR=IA32
-     ;;
-   X64)
-     export PROCESSOR=X64
-     ;;
-   *)
-     echo Invalid Architecture string, should be only IA32 or X64
-     return 1
-esac
-
-case "$2" in
-   UNIXGCC)
-     export TOOLTAG=UNIXGCC
-     ;;
-   GCC4*)
-     export TOOLTAG=$2
-     ;;
-   *)
-     echo Invalid tool tag, should be only UNIXGCC or GCC4\*
-     return 1
-esac
-
 export BUILD_DIR=$WORKSPACE/Build/DuetPkg$PROCESSOR/DEBUG_$TOOLTAG
 
+#
+# Store environment variables used by CreateBootDisk.sh
+#
+echo export TOOLCHAIN=$TOOLTAG> $WORKSPACE/DuetPkg/SetEnv_$PROCESSOR.sh
+chmod +x $WORKSPACE/DuetPkg/SetEnv_$PROCESSOR.sh
 
 #
 # Boot sector module could only be built under IA32 tool chain