Bob: This is a fundamental change. It needs more review and test. But now, 201911 stable tag softfreeze will be coming on 11-15. So, I don't think this change will catch 201911 stable tag. Right?
Thanks Liming >-----Original Message----- >From: devel@edk2.groups.io [mailto:devel@edk2.groups.io] On Behalf Of >Bob Feng >Sent: Monday, November 11, 2019 5:40 PM >To: devel@edk2.groups.io >Subject: [edk2-devel] [Patch 0/4] Enhance Incremental Build > >Incremental build reduces the build time by only building >the module that need to update. Edk2 Build system is a Makefile >based build system. The incrememtal build ability is provided by >the Make program. But Edk2 build tool need to generate correct makefile >to have Make program do incremental build correctly. > >The current solution in build tool to support incremental build is that build >tool find out the include file list for each source file of a module, and in >module's >makefile, build tool add the include file list as the source file's dependency. >In this way Make program can decide if it need to rebuild a source code by >checking >its dependency. This solution has 2 shortcommings, one is the process of >finding >include list is slow, the other is this method can't handle case that >a MACRO in #include statement so the related source file is always built. > >This patch provides another method to support incremental build. That is to >use >c preprocessor and trim tool to generate dependency files for the source file. >This method will save much time in AutoGen phase and handle MACRO in >#include correctly. > >For C files: > 1. MSVS. > cl.exe has a build option /showIncludes to display include files on > stdout. >Build tool captures > that messages and generate dependency files, .deps files. > 2. CLANG and GCC > -MMD -MF build option are used to generate dependency files by >preprocessor. Build tool updates the > .deps files. >For ASL files: > 1. Trim find out all the included files, which are asl specific include > format, >and generate .trim.deps file. > 2. ASL PP use c preprocessor to find out all included files with #include >format and generate a .deps file > 3. build tool updates the .deps file >For ASM files (.asm, .s or .nasm): > 1. Trim find out all the included files, which are asm specific include > format, >and generate .trim.deps file. > 2. ASM PP use c preprocessor to find out all included files with #include >format and generate a deps file > 3. build tool updates the .deps file > >Build tool add "include" instruction for those deps files in the Makefile. > >This patch does not support RVCT tool chain for the BZ >https://bugzilla.tianocore.org/show_bug.cgi?id=1750 > >Feng, Bob C (4): > BaseTools: Add build option for dependency file generation > BaseTools: Generate dependent files for ASL and ASM files > BaseTools: Update build_rule.txt to generate dependent files. > BaseTools: Enhance Basetool for incremental build > > BaseTools/Conf/build_rule.template | 94 ++++--- > BaseTools/Conf/tools_def.template | 173 ++++++------ > BaseTools/Source/Python/AutoGen/GenMake.py | 83 ++---- > .../Source/Python/AutoGen/IncludesAutoGen.py | 255 >++++++++++++++++++ > .../Source/Python/AutoGen/ModuleAutoGen.py | 23 ++ > BaseTools/Source/Python/Trim/Trim.py | 115 ++++++-- > BaseTools/Source/Python/build/build.py | 63 ++++- > 7 files changed, 588 insertions(+), 218 deletions(-) > create mode 100644 >BaseTools/Source/Python/AutoGen/IncludesAutoGen.py > >-- >2.20.1.windows.1 > > > -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#50387): https://edk2.groups.io/g/devel/message/50387 Mute This Topic: https://groups.io/mt/52516787/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
