On Fri, Jul 8, 2016 at 9:42 AM, Shi, Steven <steven....@intel.com> wrote: > LANG38 uses Clang3.8.0, enable LLVM Link Time Optimization (LTO) > and code size optimization flag (-Oz) by default for aggressive code > size improvement. CLANG38 X64 code is small code model + PIE. > > Test pass platforms: OVMF (OvmfPkgIa32.dsc, OvmfPkgX64.dsc). > Test compiler and linker version: LLVM 3.8, GNU ld 2.26. > > Example steps to use the CLANG38 tool chain to build OVMF platform: > 1. Download and extract the llvm 3.8.0 Pre-Built Binaries from > http://www.llvm.org/releases/ (e.g. http://www.llvm.org/releases/ > 3.8.0/clang+llvm-3.8.0-x86_64-linux-gnu-ubuntu-16.04.tar.xz and > extract it as ~/clang38). > 2. Copy LLVMgold.so from https://github.com/shijunjing/edk2/blob/ > llvm/BaseTools/Bin/LLVMgold.so to above clang lib folder (e.g. > ~/clang38/lib/LLVMgold.so, this step is needed only for CLANG38) > 3. Install new version linker with plugin support (e.g. ld 2.26 in > GNU Binutils 2.26 or Ubuntu16.04, this step is needed only for CLANG38) > $ cd edk2 > $ git checkout llvm > $ export CLANG38_BIN=path/to/your/clang38/ > (e.g. export CLANG38_BIN=~/clang38/bin/) > $ source edksetup.sh > $ make -C BaseTools/Source/C > $ build -t CLANG38 -a X64 -p OvmfPkg/OvmfPkgX64.dsc -n 5 -b DEBUG > -DDEBUG_ON_SERIAL_PORT > $ cd edk2/Build/OvmfX64/DEBUG_CLANG38/FV > $ qemu-system-x86_64.exe -bios OVMF.fd -serial file:serial.log -m 4096 > -hda fat:. > > If you want, you can build and install GNU Binutils 2.26 as below steps > in Ubuntu: > Download binutils-2.26 source code from http://ftp.gnu.org/gnu/binutils/ > and extract it to ~/binutils-2.26 > $sudo apt-get install bison > $sudo apt-get install flex > Install other necessary binutils build tools if missing > $ mkdir build > $ cd build > $ ../binutils-2.26/configure --enable-gold --enable-plugins > --disable-werror --prefix=/usr > $ make -j 5 > $ sudo make install > > If you want, you can build LLVMgold.so as below steps > Download llvm-3.8.0 source code from http://www.llvm.org/releases/ > 3.8.0/llvm-3.8.0.src.tar.xz and extract it to ~/llvm-3.8.0.src > Download clang3.8.0 source code from http://www.llvm.org/releases/ > 3.8.0/cfe-3.8.0.src.tar.xz and extract it to ~/llvm-3.8.0.src/tools/clang > Refer http://clang.llvm.org/get_started.html to Install other necessary > clang build tools if missing > $ mkdir llvm38build > $ cd llvm38build > If your GNU Binutils 2.26 is in /home/jshi19/binutils-2.26, > $ cmake ../llvm-3.8.0.src -G "Unix Makefiles" -DCMAKE_BUILD_TYPE="Release" > -DLLVM_TARGETS_TO_BUILD="X86" -DCMAKE_VERBOSE_MAKEFILE=ON > -DCMAKE_CXX_COMPILER="/usr/bin/g++" -DCMAKE_C_COMPILER="/usr/bin/gcc" > -DLLVM_BINUTILS_INCDIR=/home/jshi19/binutils-2.26/include > $ make -j 5 LLVMgold The LLVMgold.so is in ~/llvm38build/lib/LLVMgold.so > > Contributed-under: TianoCore Contribution Agreement 1.0 > Signed-off-by: Steven Shi <steven....@intel.com> > --- > BaseTools/Conf/build_rule.template | 7 ++- > BaseTools/Conf/tools_def.template | 87 > ++++++++++++++++++++++++++++++++++++++ > 2 files changed, 92 insertions(+), 2 deletions(-) > > diff --git a/BaseTools/Conf/build_rule.template > b/BaseTools/Conf/build_rule.template > index 25cf380..4530d92 100755 > --- a/BaseTools/Conf/build_rule.template > +++ b/BaseTools/Conf/build_rule.template > @@ -267,7 +267,10 @@ > > <Command.GCC> > "$(SLINK)" -cr ${dst} $(SLINK_FLAGS) @$(OBJECT_FILES_LIST) > - > + > + <Command.CLANG38> > + "$(SLINK)" cr ${dst} $(SLINK_FLAGS) @$(OBJECT_FILES_LIST) > + > <Command.RVCT> > "$(SLINK)" $(SLINK_FLAGS) ${dst} --via $(OBJECT_FILES_LIST) > > @@ -295,7 +298,7 @@ > "$(DLINK)" -o ${dst} $(DLINK_FLAGS) --start-group $(DLINK_SPATH) > @$(STATIC_LIBRARY_FILES_LIST) --end-group $(DLINK2_FLAGS) > "$(OBJCOPY)" $(OBJCOPY_FLAGS) ${dst} > > - <Command.GCC5> > + <Command.GCC5, Command.CLANG38> > "$(DLINK)" -o ${dst} $(DLINK_FLAGS) > -Wl,--start-group,$(DLINK_SPATH),@$(STATIC_LIBRARY_FILES_LIST) > -Wl,--end-group $(DLINK2_FLAGS) > "$(OBJCOPY)" $(OBJCOPY_FLAGS) ${dst} > > diff --git a/BaseTools/Conf/tools_def.template > b/BaseTools/Conf/tools_def.template > index e41aad14..092a393 100755 > --- a/BaseTools/Conf/tools_def.template > +++ b/BaseTools/Conf/tools_def.template > @@ -378,6 +378,12 @@ DEFINE SOURCERY_CYGWIN_TOOLS = /cygdrive/c/Program > Files/CodeSourcery/Sourcery G > # Required to build platforms or ACPI tables: > # Intel(r) ACPI Compiler from > # https://acpica.org/downloads > +# CLANG38 -Linux- Requires: > +# Clang v3.8 or later, LLVMgold plugin and GNU > binutils 2.26 targeting x86_64-linux-gnu > +# Optional: > +# Required to build platforms or ACPI tables: > +# Intel(r) ACPI Compiler from > +# https://acpica.org/downloads > # ELFGCC -Linux- Requires: > # GCC(this tool chain uses whatever version of > gcc and binutils that is installed in /usr/bin) > # Optional: > @@ -7417,6 +7423,87 @@ RELEASE_RVCTCYGWIN_ARM_CC_FLAGS = "$(CCPATH_FLAG)" > $(ARCHCC_FLAGS) $(PLATFORM_F > ################# > *_*_*_*_BUILDRULEORDER = nasm asm Asm ASM S s > > +#################################################################################### > +# > +# Clang 3.8 - This configuration is used to compile under Linux to produce > +# PE/COFF binaries using LLVM/Clang 3.8 with Link Time Optimization enabled > +# > +#################################################################################### > + > +*_CLANG38_*_*_FAMILY = GCC > +*_CLANG38_*_*_BUILDRULEFAMILY = CLANG38 > +*_CLANG38_*_MAKE_PATH = DEF(GCC49_IA32_PREFIX)make > +*_CLANG38_*_*_DLL = ENV(CLANG38_DLL) > +*_CLANG38_*_ASL_PATH = DEF(UNIX_IASL_BIN) > + > +*_CLANG38_*_PP_FLAGS = DEF(GCC_PP_FLAGS) -target > x86_64-pc-linux-gnu > +*_CLANG38_*_ASLPP_FLAGS = DEF(GCC_ASLPP_FLAGS) -target > x86_64-pc-linux-gnu > +*_CLANG38_*_VFRPP_FLAGS = DEF(GCC_VFRPP_FLAGS) -target > x86_64-pc-linux-gnu > +*_CLANG38_*_APP_FLAGS = > +*_CLANG38_*_ASL_FLAGS = DEF(IASL_FLAGS) > +*_CLANG38_*_ASL_OUTFLAGS = DEF(IASL_OUTFLAGS) > + > +DEFINE CLANG38_IA32_PREFIX = ENV(CLANG38_BIN) > +DEFINE CLANG38_X64_PREFIX = ENV(CLANG38_BIN) > + > +DEFINE CLANG38_ALL_CC_FLAGS = -c -fshort-wchar -fno-strict-aliasing > -Wall -Werror -Wno-array-bounds -Wno-empty-body -ffunction-sections > -fdata-sections -include AutoGen.h -DSTRING_ARRAY_NAME=$(BASE_NAME)Strings > -fno-stack-protector -fno-builtin -mms-bitfields -Wno-address > -Wno-shift-negative-value -Wno-parentheses-equality -Wno-unknown-pragmas > -Wno-tautological-constant-out-of-range-compare > -Wno-incompatible-library-redeclaration -target x86_64-pc-linux-gnu > -fno-asynchronous-unwind-tables -mno-sse -mno-mmx -msoft-float > -mno-implicit-float > -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang > -funsigned-char -fno-ms-extensions -fno-common -Wno-null-dereference > -Wno-tautological-compare > +
Same remark from my previous email: you should not use x86_64-pc-linux-gnu as a default target. Look at how it is done for CLANG35 > +DEFINE CLANG38_ALL_DLINK_FLAGS = -flto -nostdlib -Wl,-n -Wl,-q > -Wl,--gc-sections -z common-page-size=0x40 -Wl,--entry,$(IMAGE_ENTRY_POINT) > -Wl,-u,$(IMAGE_ENTRY_POINT) -Wl,-Map,$(DEST_DIR_DEBUG)/$(BASE_NAME).map > +DEFINE CLANG38_IA32_DLINK2_FLAGS = -Wl,--defsym=PECOFF_HEADER_SIZE=0x220 > -Wl,--script=$(EDK_TOOLS_PATH)/Scripts/GccBase.lds > +DEFINE CLANG38_X64_DLINK2_FLAGS = -Wl,--defsym=PECOFF_HEADER_SIZE=0x228 > -Wl,--script=$(EDK_TOOLS_PATH)/Scripts/GccBase.lds > + > +########################### > +# CLANG38 IA32 definitions > +########################### > +*_CLANG38_IA32_OBJCOPY_PATH = DEF(GCC49_IA32_PREFIX)objcopy > +*_CLANG38_IA32_CC_PATH = DEF(CLANG38_IA32_PREFIX)clang > +*_CLANG38_IA32_SLINK_PATH = DEF(CLANG38_IA32_PREFIX)llvm-ar > +*_CLANG38_IA32_DLINK_PATH = DEF(CLANG38_IA32_PREFIX)clang > +*_CLANG38_IA32_ASLDLINK_PATH = DEF(CLANG38_IA32_PREFIX)clang > +*_CLANG38_IA32_ASM_PATH = DEF(CLANG38_IA32_PREFIX)clang > +*_CLANG38_IA32_PP_PATH = DEF(CLANG38_IA32_PREFIX)clang > +*_CLANG38_IA32_VFRPP_PATH = DEF(CLANG38_IA32_PREFIX)clang > +*_CLANG38_IA32_ASLCC_PATH = DEF(CLANG38_IA32_PREFIX)clang > +*_CLANG38_IA32_ASLPP_PATH = DEF(CLANG38_IA32_PREFIX)clang > +*_CLANG38_IA32_RC_PATH = DEF(GCC49_IA32_PREFIX)objcopy > + > +*_CLANG38_IA32_ASLCC_FLAGS = -x c -Os -m32 -target > x86_64-pc-linux-gnu -flto Again, the target is wrong > +*_CLANG38_IA32_ASLDLINK_FLAGS = DEF(CLANG38_ALL_DLINK_FLAGS) -Wl,-Oz > -Wl,-melf_i386 -Wl,--entry,ReferenceAcpiTable -Wl,-u,ReferenceAcpiTable > +*_CLANG38_IA32_ASM_FLAGS = DEF(GCC49_ASM_FLAGS) -m32 -march=i386 > +DEBUG_CLANG38_IA32_CC_FLAGS = DEF(CLANG38_ALL_CC_FLAGS) -m32 -Oz > -flto -march=i586 -g > +RELEASE_CLANG38_IA32_CC_FLAGS = DEF(CLANG38_ALL_CC_FLAGS) -m32 -Oz > -flto -march=i586 > +*_CLANG38_IA32_DLINK_FLAGS = DEF(CLANG38_ALL_DLINK_FLAGS) -Wl,-Oz > -Wl,-melf_i386 -Wl,--oformat=elf32-i386 > +*_CLANG38_IA32_DLINK2_FLAGS = DEF(CLANG38_IA32_DLINK2_FLAGS) > +*_CLANG38_IA32_RC_FLAGS = DEF(GCC_IA32_RC_FLAGS) > +*_CLANG38_IA32_OBJCOPY_FLAGS = > +*_CLANG38_IA32_NASM_FLAGS = -f elf32 > + > +########################## > +# CLANG38 X64 definitions > +########################## > +*_CLANG38_X64_OBJCOPY_PATH = DEF(GCC49_X64_PREFIX)objcopy > +*_CLANG38_X64_CC_PATH = DEF(CLANG38_X64_PREFIX)clang > +*_CLANG38_X64_SLINK_PATH = DEF(CLANG38_X64_PREFIX)llvm-ar > +*_CLANG38_X64_DLINK_PATH = DEF(CLANG38_X64_PREFIX)clang > +*_CLANG38_X64_ASLDLINK_PATH = DEF(CLANG38_X64_PREFIX)clang > +*_CLANG38_X64_ASM_PATH = DEF(CLANG38_X64_PREFIX)clang > +*_CLANG38_X64_PP_PATH = DEF(CLANG38_X64_PREFIX)clang > +*_CLANG38_X64_VFRPP_PATH = DEF(CLANG38_X64_PREFIX)clang > +*_CLANG38_X64_ASLCC_PATH = DEF(CLANG38_X64_PREFIX)clang > +*_CLANG38_X64_ASLPP_PATH = DEF(CLANG38_X64_PREFIX)clang > +*_CLANG38_X64_RC_PATH = DEF(GCC49_X64_PREFIX)objcopy > + > +*_CLANG38_X64_ASLCC_FLAGS = -x c -Os -m64 -target > x86_64-pc-linux-gnu -flto > +*_CLANG38_X64_ASLDLINK_FLAGS = DEF(CLANG38_ALL_DLINK_FLAGS) -Wl,-Oz > -Wl,-melf_x86_64 -Wl,--entry,ReferenceAcpiTable -Wl,-u,ReferenceAcpiTable > -Wl,-pie -mcmodel=small > +*_CLANG38_X64_ASM_FLAGS = DEF(GCC49_ASM_FLAGS) -m64 -target > x86_64-pc-linux-gnu > +DEBUG_CLANG38_X64_CC_FLAGS = DEF(CLANG38_ALL_CC_FLAGS) -m64 > "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone -mcmodel=small -fpie -g -Oz > -flto > +RELEASE_CLANG38_X64_CC_FLAGS = DEF(CLANG38_ALL_CC_FLAGS) -m64 > "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone -mcmodel=small -fpie -Oz > -flto > +*_CLANG38_X64_DLINK_FLAGS = DEF(CLANG38_ALL_DLINK_FLAGS) -Wl,-Oz > -Wl,-melf_x86_64 -Wl,--oformat=elf64-x86-64 -Wl,-pie -mcmodel=small > +*_CLANG38_X64_DLINK2_FLAGS = DEF(CLANG38_X64_DLINK2_FLAGS) > +*_CLANG38_X64_RC_FLAGS = DEF(GCC_X64_RC_FLAGS) > +*_CLANG38_X64_OBJCOPY_FLAGS = > +*_CLANG38_X64_NASM_FLAGS = -f elf64 > + > > ########################################################################################## > # > # GCC 5.x - This configuration is used to compile under Linux to produce > -- > 2.7.4 > > _______________________________________________ > edk2-devel mailing list > edk2-devel@lists.01.org > https://lists.01.org/mailman/listinfo/edk2-devel _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
