mirror of
https://github.com/acidanthera/audk.git
synced 2025-04-07 19:45:07 +02:00
fb94f83131
https://bugzilla.tianocore.org/show_bug.cgi?id=1499 Compiler cache can greatly improve the build performance and guarantee the build result safe. In our testing, the compiler cache can improve the overall clean build time usually by 30+% in linux and 10+% in windows. The compiler cache are very fit to improve the Continuous Integration (CI) build performance. For linux compiler cache (ccache) enabling, there is no need to update edk2 code. Below link has the ccache enabling referencd steps: https://github.com/shijunjing/edk2/wiki/ Edk2-compiler-cache-enabling-steps-on-Linux For windows compiler cache (clcache) enabling, we need update the .PDB debugging file producing option from /Zi to /Z7, which is to let the C object file contain its full symbolic debugging information rather than produces a separated PDB file for all obj files per folder. "PDB files are generated by a different process (mspdbsrv). They arrive or are updated on disk after cl completes a compilation or linking operation. One huge problem with caching them is that the pdb files are input files as well as outputs. mspdbsrv updates the file with new debug information if the file exists beforehand. If there are several compilations going on at once targetting the same pdb then the order the pdb gets updated is unpredictable. All this makes caching very hard." The /Zi issue more detail disccusion can be found: https://github.com/frerich/clcache/issues/30 Please be aware that this change has no any impact to edk2 module level PDB file generation, and we still can get the PDB debug file for a .efi module. The /Z7 only impact intermediate obj files level PDB file, which is current one PDB file (vc140.pdb) per obj folder. Below link has the clcache enabling referencd steps: https://github.com/shijunjing/edk2/wiki/ Edk2-compiler-cache-enabling-steps-on-Windows Have tested below tools which consume the .PDB file: *Edk2 source code debugger *Various hardware and software debuggers *Uefi code coverage tools Only update and test below most commonly used four msvc toolchains: VS2012x86 VS2013x86 VS2015x86 VS2017 Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Steven Shi <steven.shi@intel.com> Cc: Liming Gao <liming.gao@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com>
EDK II Project
A modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications from www.uefi.org.
Contributions to the EDK II open source project are covered by the TianoCore Contribution Agreement 1.1
The majority of the content in the EDK II open source project uses a BSD 2-Clause License. The EDK II open source project contains the following components that are covered by additional licenses:
- AppPkg/Applications/Python/Python-2.7.2/Tools/pybench
- AppPkg/Applications/Python/Python-2.7.2
- AppPkg/Applications/Python/Python-2.7.10
- BaseTools/Source/C/BrotliCompress
- MdeModulePkg/Library/BrotliCustomDecompressLib
- OvmfPkg
- CryptoPkg/Library/OpensslLib/openssl
The EDK II Project is composed of packages. The maintainers for each package are listed in Maintainers.txt.