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REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2628 This patch reduces the size of IA32 binaries by ensuring that no .debug_frame / .eh_frame sections are generated through forcing SEH exception model, which is already the default in clang for X64. EDK II does not support exceptions, and in future we should disable them instead of switching to some other variant. Currently this is not possible due to the following LLVM bugs: https://bugs.llvm.org/show_bug.cgi?id=45324 https://bugs.llvm.org/show_bug.cgi?id=45325 Upon applying this patch OvmfPkgIA32.dsc compilation in DEBUG mode gets the following size decrease with clang 9.0.1. Before: FV Space Information SECFV [11%Full] 212992 total, 24512 used, 188480 free PEIFV [22%Full] 917504 total, 203048 used, 714456 free DXEFV [36%Full] 11534336 total, 4215672 used, 7318664 free FVMAIN_COMPACT [37%Full] 3440640 total, 1287776 used, 2152864 free After: FV Space Information SECFV [10%Full] 212992 total, 22112 used, 190880 free PEIFV [19%Full] 917504 total, 176392 used, 741112 free DXEFV [31%Full] 11534336 total, 3657112 used, 7877224 free FVMAIN_COMPACT [33%Full] 3440640 total, 1153896 used, 2286744 free Cc: Liming Gao <liming.gao@intel.com> Cc: Marvin H?user <mhaeuser@outlook.de> Cc: Zhiguang Liu <zhiguang.liu@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com> Reviewed-by: Zhiguang Liu <zhiguang.liu@intel.com> Signed-off-by: Vitaly Cheptsov <vit9696@protonmail.com>
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 contains 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.) 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