On 1 August 2016 at 10:01, Ard Biesheuvel <[email protected]> wrote: > This v5 to introduce GCC5 is now a 8 piece series, including some > preparatory cleanup patches that allow all GCC4x and CLANG35 toolchains > to switch to using 'gcc' as the linker. This allows us to get rid of > the wrapper script to marshall ld arguments in order to make them > understandable by gcc, which is fragile and likely to cause problems in > the future. > > Since there appears to be a natural split between the 'legacy' GCC > toolchains UNIXGCC, ELFGCC, and CYGGCC[xASL], both in term of supported > architectures [IA32, X64, IPF] vs [IA32, X64, ARM, AARCH64], and in > terms of maintenance, these toolchains are not moved to using 'gcc' as > the linker, and instead, a new BUILDRULEFAMILY is introduced called GCCLD > that will retain the old behavior. > > The result is that GCC5 can align much more closely with its predecessors, > making the expected maintenance burden of supporting GCC back to v4.4 > much lower. > > Changes since v4: > - added patch to use 'protected' visibility only for the libraries that > define the module entry points (_ModuleEntryPoint), to prevent them from > being optimized away by the LTO routines > - added Jordan's ack/RBs > - add some extra comments to tools_def.template (#8) >
Thanks all. Committed as 1c63516075b3 BaseTools CLANG35: drop problematic use-movt and save-temps options ff54bcdf2e4e ArmVirtPkg/ArmVirtPrePiUniCoreRelocatable: ignore .hash and .note sections befb3ba51502 BaseTools UNIXGCC ELFGCC CYGGCC: clone GCC build rule family into GCCLD a1b8baccc30b BaseTools GCC: use 'gcc' as the linker command for GCC44 and later e1458aaded8e ArmPkg: add prebuilt glue binaries for GCC5 LTO support 7fd5d619806d BaseTools GCC: drop GNU notes section from EFI image 4a8466d4baba BaseTools GCC: introduce GCC5 toolchain to support GCC v5.x in LTO mode with Leif and Liming's R-b. I dropped patch #7, and instead made the visibility pragma conditional on whether LTO is disabled. -- Ard. > Changes since v3: > - like Steven does in his GCC5LTO patch, add -fno-builtin to IA32 and X64 > CC_FLAGS; this addresses a build issue reported by Liming > - add -Os the the linker flags as well, for AARCH64 this does not seem to make > a difference, but it is arguably correct since the LTO processing at link > time involves code generation as well > - add Laszlo's ack to #2 > - new patch #6 to omit the autogenerated build-id from the PE/COFF binary > > Changes since v2: > - add license headers to LTO glue files for ARM and AARCH64 (#5) > - get rid of lto-ld-wrapper script > > Ard Biesheuvel (8): > BaseTools CLANG35: drop problematic use-movt and save-temps options > ArmVirtPkg/ArmVirtPrePiUniCoreRelocatable: ignore .hash and .note > sections > BaseTools UNIXGCC ELFGCC CYGGCC: clone GCC build rule family into > GCCLD > BaseTools GCC: use 'gcc' as the linker command for GCC44 and later > ArmPkg: add prebuilt glue binaries for GCC5 LTO support > BaseTools GCC: drop GNU notes section from EFI image > MdePkg GCC/X64: avoid 'hidden' visibility for module entry points > BaseTools GCC: introduce GCC5 toolchain to support GCC v5.x in LTO > mode > > ArmPkg/GccLto/liblto-aarch64.a | Bin > 0 -> 1016 bytes > ArmPkg/GccLto/liblto-aarch64.s | 27 > ++ > ArmPkg/GccLto/liblto-arm.a | Bin > 0 -> 2096 bytes > ArmPkg/GccLto/liblto-arm.s | 61 > ++++ > ArmVirtPkg/PrePi/ArmVirtPrePiUniCoreRelocatable.inf | 2 > +- > ArmVirtPkg/PrePi/Scripts/PrePi-PIE.lds | 3 > + > BaseTools/Conf/build_rule.template | 31 > +- > BaseTools/Conf/tools_def.template | 350 > +++++++++++++++----- > BaseTools/Scripts/GccBase.lds | 6 > + > EmulatorPkg/Unix/Host/Host.inf | 6 > +- > MdePkg/Include/X64/ProcessorBind.h | 9 > +- > MdePkg/Library/DxeCoreEntryPoint/DxeCoreEntryPoint.inf | 2 > + > MdePkg/Library/PeiCoreEntryPoint/PeiCoreEntryPoint.inf | 2 > + > MdePkg/Library/PeimEntryPoint/PeimEntryPoint.inf | 2 > + > MdePkg/Library/UefiApplicationEntryPoint/UefiApplicationEntryPoint.inf | 2 > + > MdePkg/Library/UefiDriverEntryPoint/UefiDriverEntryPoint.inf | 2 > + > 16 files changed, 396 insertions(+), 109 deletions(-) > create mode 100644 ArmPkg/GccLto/liblto-aarch64.a > create mode 100644 ArmPkg/GccLto/liblto-aarch64.s > create mode 100644 ArmPkg/GccLto/liblto-arm.a > create mode 100644 ArmPkg/GccLto/liblto-arm.s > > -- > 2.7.4 > _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
