TianoCore and the Python-based Build Process, Part 2

So here’s the "sequel" to Part One. This time I’m trying to actually build a Firmware Volume with the Python-based tools.

Prerequisites for build.py

The core of the tools is build.py, a Python script which invokes the tools in order to build a Firmware Volume (FV). On FreeBSD, build.py cannot be run until the following requirements are met:

  • SQLite3 for Python, which can be installed through the databases/py-sqlite3 port.
  • The Python module for ANTLR, a parser generator.
  • Installing the module mentioned above requires EasyInstall, or rather: I don’t know how it can be done otherwise.

Because I could not find a port for EasyInstall, I did this to install the script on FreeBSD:

$ fetch http://peak.telecommunity.com/dist/ez_setup.py
$ chmod +x ez_setup.py
$ ./ez_setup.py

Note that this isn’t the whole truth as the path to the interpreter in the script, i.e. the first line aka "shebang", must be adjusted to /usr/local/bin/python before the script can be executed.

After that, the easy_install command is available and the ANTLR module can be installed by running this:

$ eazy_install 
  http://www.antlr.org/download/Python/antlr_python_runtime-3.0.1-py2.5.egg

Running build.py

In theory, running build.py and thus building a Firmware Volume should be as easy as this:

$ cd path/to/edk2
$ export PYTHONPATH=/path/to/basetools/Source/Python
$ . edksetup.sh BaseTools
$ python $PYTHONPATH/build/build.py

Unfortunately, the last step initially aborted with this error:

build...
 : error 5000: Please execute /home/phs/sandbox/basetools/Bin/FreeBSD-i386:/sbin: 
/bin:/usr/sbin:/usr/bin:/usr/games:/usr/local/sbin:/usr/local/bin: 
/home/phs/bin/edksetup.bat to set /home/phs/sandbox/basetools/Bin/Freebsd7 in 
environment variable: PATH!



- Failed -

After some try’n’error time, I think that the above error is caused by user error: I had previously copied the compiled C programs from Source/C/bin to bin/FreeBSD-i386 (paths relative to /path/to/basetools). After removing bin/FreeBSD-i386, I created a link to BinWrappers/PosixLike at the same location:

$ cd /path/to/basetools
$ ln -s BinWrappers/PosixLike Bin/FreeBSD-i386

I then re-ran build.py (see above) and it produced some output that didn’t look like errors:

00:44:09, Sep.21 2008 [FreeBSD-7.1-PRERELEASE-i386-32bit-ELF]

WORKSPACE                = /usr/home/phs/sandbox/edk2
EDK_SOURCE               = /usr/home/phs/sandbox/edk2/EdkCompatibilityPkg
EFI_SOURCE               = /usr/home/phs/sandbox/edk2/EdkCompatibilityPkg
EDK_TOOLS_PATH           = /home/phs/sandbox/basetools

TARGET_ARCH              = IA32
TARGET                   = DEBUG
TOOL_CHAIN_TAG           = ELFGCC

Active Platform          = UnixPkg/UnixPkg.dsc
Flash Image Definition   = UnixPkg/UnixPkg.fdf

Processing meta-data . . . . . . .

Unfortunately, though, right after the dots, an error occured:

build...
UnixPkg/UnixPkg.dsc(...): error 4000: Instance of library class [NetLib] is not found
        in [MdeModulePkg/Universal/Network/ArpDxe/ArpDxe.inf] [IA32]
        consumed by module [MdeModulePkg/Universal/Network/ArpDxe/ArpDxe.inf]
 

- Failed -
00:44:17, Sep.21 2008 [00:08]

Fixing the UnixPkg

The UnixPkg part of the EDK II seems to be broken as the error above indicates a dependency error between modules which is caused by an incorrect platform definition file (*.dsc). Applying this patch fixes the problem.

The patch ensures that all dependencies are met, but the build process still fails with this error:

Processing meta-data . . . . . . . . done!
make: don't know how to make pbuild. Stop


build...
 : error 7000: Failed to execute command
        make pbuild [/usr/home/phs/sandbox/edk2/Build/Unix/DEBUG_ELFGCC/IA32/MdePkg/Library/BaseTimerLibNullTemplate/BaseTimerLibNullTemplate]

Waiting for all build threads exit...
make: don't know how to make pbuild. Stop


build...
 : error 7000: Failed to execute command
        make pbuild [/usr/home/phs/sandbox/edk2/Build/Unix/DEBUG_ELFGCC/IA32/MdePkg/Library/BaseLib/BaseLib]


build...
 : error F002: Failed to build module
        MdePkg/Library/BaseTimerLibNullTemplate/BaseTimerLibNullTemplate.inf [IA32, ELFGCC, DEBUG]

- Failed -
01:01:43, Sep.21 2008 [00:09]

Oh, well, to be continued…

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