mirror of https://github.com/acidanthera/audk.git
c17956e0ee
[Introduction]
The BaseTool Build.py AutoGen parse INF meta-file and generate
AutoGen.c/AutoGen.h/makefile. When we only change .c .h code, the
AutoGen might be not necessary, but Build.py spend a lot of time on it.
There's a -u flag to skip all module's AutoGen. In my environment, it save
35%~50% of time in rebuild a ROM.
However, if user change one .INF meta-file, then -u flag is not available.
[Idea]
AutoGen can compare meta-file's timestamp and decide if the module's
AutoGen can be skipped. With this, when a module's INF is changed, we
only run this module's AutoGen, we don't need to run other module's.
[Implementation]
In the end of a module's AutoGen, we create a AutoGenTimeStamp.
The file save a file list that related to this module's AutoGen.
In other word, the file list in AutoGenTimeStamp is INPUT files of
module AutoGen, AutoGenTimeStamp file is OUTPUT.
During rebuild, we compare time stamp between INPUT and OUTPUT, and
decide if we can skip it.
Below is the Input/Output of a module's AutoGen.
[Input]
1. All the DSC/DEC/FDF used by the platform.
2. Macro and PCD defined by Build Options such as "build -D AAA=TRUE
--pcd BbbPcd=0".
3. INF file of a module.
4. Source files of a module, list in [Sources] section of INF.
5. All the library link by the module.
6. All the .h files included by the module's sources.
[Output]
AutoGen.c/AutoGen.h/makefile/AutoGenTimeStamp
[Testing]
This patch save my build time. When I make a change without touching
DSC/DEC/FDF, it is absolutely much faster than original rebuild,
35%~50% time saving in my environment
(compare to original tool rebuild time).
If I change any DSC/DEC/FDF, there's no performance improve, because it
can't skip any module's AutoGen.
Please note that if your environment will generate DSC/FDF during prebuild,
it will not skip any AutoGen because of DSC timestamp is changed. This will
require prebuild script not to update metafile when content is not changed.
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| .. | ||
| Bin | ||
| BinWrappers | ||
| Conf | ||
| Scripts | ||
| Source | ||
| Tests | ||
| UserManuals | ||
| gcc | ||
| .gitignore | ||
| BuildEnv | ||
| BuildNotes.txt | ||
| Contributions.txt | ||
| GNUmakefile | ||
| License.txt | ||
| Makefile | ||
| ReadMe.txt | ||
| building-gcc.txt | ||
| get_vsvars.bat | ||
| set_vsprefix_envs.bat | ||
| toolsetup.bat | ||
ReadMe.txt
This directory contains the next generation of EDK II build tools and template files. Templates are located in the Conf directory, while the tools executables for Microsoft Windows 32-bit Operating Systems are located in the Bin\Win32 directory, other directory contatins tools source. 1. Build step to generate the binary tools. === Windows/Visual Studio Notes === To build the BaseTools, you should run the standard vsvars32.bat script from your preferred Visual Studio installation or you can run get_vsvars.bat to use latest automatically detected version. In addition to this, you should set the following environment variables: * EDK_TOOLS_PATH - Path to the BaseTools sub directory under the edk2 tree * BASE_TOOLS_PATH - The directory where the BaseTools source is located. (It is the same directory where this README.txt is located.) * PYTHON_FREEZER_PATH - Path to where the python freezer tool is installed After this, you can run the toolsetup.bat file, which is in the same directory as this file. It should setup the remainder of the environment, and build the tools if necessary. Please also refer to the 'BuildNotes.txt' file for more information on building under Windows. === Unix-like operating systems === To build on Unix-like operating systems, you only need to type 'make' in the base directory of the project. === Ubuntu Notes === On Ubuntu, the following command should install all the necessary build packages to build all the C BaseTools: sudo apt-get install build-essential uuid-dev === Python sqlite3 module === On Windows, the cx_freeze will not copy the sqlite3.dll to the frozen binary directory (the same directory as build.exe and GenFds.exe). Please copy it manually from <PythonHome>\DLLs. The Python distributed with most recent Linux will have sqlite3 module built in. If not, please install sqlit3 package separately. 26-OCT-2011