From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp-relay-internal-0.canonical.com (smtp-relay-internal-0.canonical.com [185.125.188.122]) by mx.groups.io with SMTP id smtpd.web08.44328.1656714023983857465 for ; Fri, 01 Jul 2022 15:20:24 -0700 Authentication-Results: mx.groups.io; dkim=pass header.i=@canonical.com header.s=20210705 header.b=ZdtXBmyj; spf=pass (domain: canonical.com, ip: 185.125.188.122, mailfrom: dann.frazier@canonical.com) Received: from mail-oi1-f197.google.com (mail-oi1-f197.google.com [209.85.167.197]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by smtp-relay-internal-0.canonical.com (Postfix) with ESMTPS id E08F93F32C for ; Fri, 1 Jul 2022 22:20:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1656714019; bh=aG4ypwoBLirE/2WpmD9qqzl0TEt+mOvL2jV+q2TroH8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:In-Reply-To; b=ZdtXBmyjYxXFPhtQ69gDds3bGIL55RJcwc7iaYANH++PusWgzSkO8HHHJCM77LO21 hrnkMGcvs1jwRliZ5Sf1pDuzhyGX3mgwhx35aMbnnW7DRZAYfqiEzacLpSbTMVFwZ4 eE7K/Dp2/7PEFcCXvvdIKEHXprwhqeLzhkqKLCj2X17aQt8srdXpWrmRlBvSPMoZHH 8Zj77t3iwE1aExyYyDlkA5xqqDWSE/Cc/EMBvazgwYa51rm5KrnR21vxfjA18/22+N 6Ka3YdymSfBLFi9+LbqXP1irOldcWG2VDkf/wenAHI+zSIEDFlArfJoaY7jm1WuAJr Ipq2kgsJbIEGA== Received: by mail-oi1-f197.google.com with SMTP id bd1-20020a056808220100b0032ed33d656cso1999763oib.21 for ; Fri, 01 Jul 2022 15:20:18 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=aG4ypwoBLirE/2WpmD9qqzl0TEt+mOvL2jV+q2TroH8=; b=OO47M3ofm3O0Qa8hI1+mtmC4NitgNAIMJ6u0BLXIsKBnlVKbd/I3qrsuDufWOMAt1X PLGSq7Xlny+FfpsgWPvAWOB26tytJy6NFcD2ZctpimnFqBJ0RrVWzytcdXWbp3QlGjp1 G6D30LtoSh2rEsHS7/Zph9rfxzEX7iiXpdAbHgwbW0MtXoJSNn9uFA04FOCF2aheX6c+ GEjNpvjVwo4Jo3C4KRnxaWhZRRr+XNmqmz+/EYqWcHJHlYsVr6r8+izTiWrkd1aZOriO 0dbIlvt41g2lc+81PtYvygmkkMMaktdUxu6v2r76BV8zS69jknOMxPF4mIGc3XBpexrB POKA== X-Gm-Message-State: AJIora8/yteP+l0Qj4zxlhJSf+BSipNDAfzc1HhacgckLlJ32raSOQQ4 Pi8xfQN3doaB5qTaABQ3i+mihBLJn0eA7HegLWneNVgBGzk9jBszKo/Dq1GocOJpnc8XrLD+2ny Cd122qpL/P/cIxg9UiLdzn2U6olJttEQ= X-Received: by 2002:a4a:986c:0:b0:40e:94c3:3233 with SMTP id z41-20020a4a986c000000b0040e94c33233mr7129467ooi.2.1656714017010; Fri, 01 Jul 2022 15:20:17 -0700 (PDT) X-Google-Smtp-Source: AGRyM1uxRJGoFri9GyymlDcvhS2V5ZYW6+4SaO7tUJGS5bNws6fe0php77GhheKBp0HjqOrxfgpC1w== X-Received: by 2002:a4a:986c:0:b0:40e:94c3:3233 with SMTP id z41-20020a4a986c000000b0040e94c33233mr7129460ooi.2.1656714016634; Fri, 01 Jul 2022 15:20:16 -0700 (PDT) Received: from xps13.dannf ([172.58.56.119]) by smtp.gmail.com with ESMTPSA id i11-20020a056830402b00b00616e72dcc19sm5994074ots.39.2022.07.01.15.20.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Jul 2022 15:20:15 -0700 (PDT) Date: Fri, 1 Jul 2022 16:20:08 -0600 From: "dann frazier" To: Pedro Falcato Cc: edk2-devel-groups-io , Bob Feng , Liming Gao , Yuwei Chen Subject: Re: [edk2-devel] [PATCH] BaseTools/tools_def.txt: Add -march=x86-64 for X64 CLANG and GCC targets Message-ID: References: <20220610180918.673822-1-dannf@debian.org> MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hi Pedro, Yeah, apparently GCC didn't document it until 8.1.0: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=c7cb6c178884 But it appears to have been introduced far earlier - best I can tell, in 4.1: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=3fec9fa9b726 It seems to be unrelated to the introduction of x86-64-v*, which was in 11.1: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=324bec558e95 I don't speak GCC source fluently, so it's possible I could've misinterpreted those commits, so I did some testing. Ubuntu 16.04 had compilers based on GCC 5.4.0 and clang 4.0. Both accept -march=x86-64: $ gcc --version gcc (Ubuntu 5.4.0-6ubuntu1~16.04.12) 5.4.0 20160609 Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. $ gcc hello.c -o hello -march=x86-64 $ clang-4.0 --version clang version 4.0.0-1ubuntu1~16.04.2 (tags/RELEASE_400/rc1) Target: x86_64-pc-linux-gnu Thread model: posix InstalledDir: /usr/bin $ clang-4.0 hello.c -o hello -march=x86-64 $ Going all the way back to Ubuntu 12.04, which included compilers based on GCC 4.4.7 and clang 3.3: $ gcc-4.4 --version gcc-4.4 (Ubuntu/Linaro 4.4.7-1ubuntu2) 4.4.7 Copyright (C) 2010 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. $ gcc-4.4 test.c -o test -march=x86-64 $ clang --version Ubuntu clang version 3.3-5ubuntu4~precise1 (branches/release_33) (based on LLVM 3.3) Target: x86_64-pc-linux-gnu Thread model: posix $ clang test.c -o test -march=x86-64 $ -dann On Thu, Jun 30, 2022 at 02:05:52AM +0100, Pedro Falcato wrote: > GCC 5.4 documentation ( > https://gcc.gnu.org/onlinedocs/gcc-5.4.0/gcc/x86-Options.html#x86-Options) > doesn't include x86-64. I assume that specific option was added somewhere > in the last 2-3 years when this x86-64-v* concept was added? > > I went looking around in linux and they don't seem to specify anything of > sorts either. > > I can't speak for ARM but for IA32 it's pretty logic: the Pentium 1 (i586) > was the first processor with CPUID, RDTSC, RD/WRMSR, etc. Essentials for > firmware code that will never really even run on a processor that old. > > On Thu, Jun 30, 2022 at 12:25 AM dann frazier > wrote: > > > On Wed, Jun 29, 2022 at 11:06:01PM +0100, Pedro Falcato wrote: > > > This may be a strong opinion but I would consider toolchains that > > > explicitly change the default -march from the well understood x86-64 > > (which > > > all 64-bit processors support) to be totally broken. If a distro wants to > > > switch the -march for the packages, override CFLAGS :) > > > > Opinion noted. But is there a downside to edk2 being explicit about > > its target CPU level on x86-64, given it already does so for IA32 and > > ARM? > > > > -dann > > > > > On Wed, Jun 29, 2022 at 10:57 PM dann frazier < > > dann.frazier@canonical.com> > > > wrote: > > > > > > > Ping on this. Would it be more palatable if I limited the change only > > > > to tested toolchains (gcc/clang)? Alternatively, is there a way to > > > > submit this code to CI to verify the !(gcc|clang) variants? > > > > > > > > -dann > > > > > > > > On Fri, Jun 10, 2022 at 12:09:18PM -0600, dann frazier wrote: > > > > > From: dann frazier > > > > > > > > > > Some Linux distributions are experimenting with builds that target a > > > > > higher x86-64 psABI, such as x86-64-v3. To avoid inheriting these > > > > > compiler defaults in edk2 builds, and therefore breaking > > compatibility > > > > > with machines using older CPUs, explicitly target the generic x86-64 > > > > > psABI. This is similar to how we explicitly specify the cpu type for > > > > > some other architectures (-march=i586 for IA32, -march=armv7-a for > > ARM). > > > > > > > > > > Spot tested with OVMF builds using GCC5 and CLANG38. > > > > > > > > > > Signed-off-by: dann frazier > > > > > --- > > > > > BaseTools/Conf/tools_def.template | 20 ++++++++++---------- > > > > > 1 file changed, 10 insertions(+), 10 deletions(-) > > > > > > > > > > diff --git a/BaseTools/Conf/tools_def.template > > > > b/BaseTools/Conf/tools_def.template > > > > > index adcd23f727..569d16fb3e 100755 > > > > > --- a/BaseTools/Conf/tools_def.template > > > > > +++ b/BaseTools/Conf/tools_def.template > > > > > @@ -1885,7 +1885,7 @@ DEFINE GCC_DEPS_FLAGS = -MMD -MF > > > > $@.deps > > > > > DEFINE GCC48_ALL_CC_FLAGS = DEF(GCC_ALL_CC_FLAGS) > > > > -ffunction-sections -fdata-sections > > -DSTRING_ARRAY_NAME=$(BASE_NAME)Strings > > > > > DEFINE GCC48_IA32_X64_DLINK_COMMON = -nostdlib > > > > -Wl,-n,-q,--gc-sections -z common-page-size=0x20 > > > > > DEFINE GCC48_IA32_CC_FLAGS = DEF(GCC48_ALL_CC_FLAGS) -m32 > > > > -march=i586 -malign-double -fno-stack-protector -D EFI32 > > > > -fno-asynchronous-unwind-tables -Wno-address > > > > > -DEFINE GCC48_X64_CC_FLAGS = DEF(GCC48_ALL_CC_FLAGS) -m64 > > > > -fno-stack-protector "-DEFIAPI=__attribute__((ms_abi))" > > > > -maccumulate-outgoing-args -mno-red-zone -Wno-address -mcmodel=small > > -fpie > > > > -fno-asynchronous-unwind-tables -Wno-address > > > > > +DEFINE GCC48_X64_CC_FLAGS = DEF(GCC48_ALL_CC_FLAGS) -m64 > > > > -march=x86-64 -fno-stack-protector "-DEFIAPI=__attribute__((ms_abi))" > > > > -maccumulate-outgoing-args -mno-red-zone -Wno-address -mcmodel=small > > -fpie > > > > -fno-asynchronous-unwind-tables -Wno-address > > > > > DEFINE GCC48_IA32_X64_ASLDLINK_FLAGS = > > DEF(GCC48_IA32_X64_DLINK_COMMON) > > > > -Wl,--entry,ReferenceAcpiTable -u ReferenceAcpiTable > > > > > DEFINE GCC48_IA32_X64_DLINK_FLAGS = > > DEF(GCC48_IA32_X64_DLINK_COMMON) > > > > -Wl,--entry,$(IMAGE_ENTRY_POINT) -u $(IMAGE_ENTRY_POINT) > > > > -Wl,-Map,$(DEST_DIR_DEBUG)/$(BASE_NAME).map,--whole-archive > > > > > DEFINE GCC48_IA32_DLINK2_FLAGS = > > > > -Wl,--defsym=PECOFF_HEADER_SIZE=0x220 DEF(GCC_DLINK2_FLAGS_COMMON) > > > > > @@ -2613,15 +2613,15 @@ NOOPT_CLANG38_IA32_DLINK2_FLAGS = > > > > DEF(GCC5_IA32_DLINK2_FLAGS) -O0 > > > > > *_CLANG38_X64_ASLPP_FLAGS = DEF(GCC_ASLPP_FLAGS) > > > > DEF(CLANG38_X64_TARGET) > > > > > *_CLANG38_X64_VFRPP_FLAGS = DEF(GCC_VFRPP_FLAGS) > > > > DEF(CLANG38_X64_TARGET) > > > > > > > > > > -DEBUG_CLANG38_X64_CC_FLAGS = DEF(CLANG38_ALL_CC_FLAGS) -m64 > > > > "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone -mcmodel=small -fpie > > -Oz > > > > -flto DEF(CLANG38_X64_TARGET) -g > > > > > +DEBUG_CLANG38_X64_CC_FLAGS = DEF(CLANG38_ALL_CC_FLAGS) -m64 > > > > -march=x86-64 "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone > > > > -mcmodel=small -fpie -Oz -flto DEF(CLANG38_X64_TARGET) -g > > > > > DEBUG_CLANG38_X64_DLINK_FLAGS = DEF(GCC5_IA32_X64_DLINK_FLAGS) > > > > -flto -Wl,-Oz -Wl,-melf_x86_64 -Wl,--oformat=elf64-x86-64 -Wl,-pie > > > > -mcmodel=small > > > > > DEBUG_CLANG38_X64_DLINK2_FLAGS = DEF(GCC5_X64_DLINK2_FLAGS) -O3 > > > > > > > > > > -RELEASE_CLANG38_X64_CC_FLAGS = DEF(CLANG38_ALL_CC_FLAGS) -m64 > > > > "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone -mcmodel=small -fpie > > -Oz > > > > -flto DEF(CLANG38_X64_TARGET) > > > > > +RELEASE_CLANG38_X64_CC_FLAGS = DEF(CLANG38_ALL_CC_FLAGS) -m64 > > > > -march=x86-64 "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone > > > > -mcmodel=small -fpie -Oz -flto DEF(CLANG38_X64_TARGET) > > > > > RELEASE_CLANG38_X64_DLINK_FLAGS = DEF(GCC5_IA32_X64_DLINK_FLAGS) > > > > -flto -Wl,-Oz -Wl,-melf_x86_64 -Wl,--oformat=elf64-x86-64 -Wl,-pie > > > > -mcmodel=small > > > > > RELEASE_CLANG38_X64_DLINK2_FLAGS = DEF(GCC5_X64_DLINK2_FLAGS) -O3 > > > > > > > > > > -NOOPT_CLANG38_X64_CC_FLAGS = DEF(CLANG38_ALL_CC_FLAGS) -m64 > > > > "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone -mcmodel=small -fpie > > -O0 > > > > DEF(CLANG38_X64_TARGET) -g > > > > > +NOOPT_CLANG38_X64_CC_FLAGS = DEF(CLANG38_ALL_CC_FLAGS) -m64 > > > > -march=x86-64 "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone > > > > -mcmodel=small -fpie -O0 DEF(CLANG38_X64_TARGET) -g > > > > > NOOPT_CLANG38_X64_DLINK_FLAGS = DEF(GCC5_IA32_X64_DLINK_FLAGS) > > > > -Wl,-O0 -Wl,-melf_x86_64 -Wl,--oformat=elf64-x86-64 -Wl,-pie > > -mcmodel=small > > > > > NOOPT_CLANG38_X64_DLINK2_FLAGS = DEF(GCC5_X64_DLINK2_FLAGS) -O0 > > > > > > > > > > @@ -2798,17 +2798,17 @@ NOOPT_CLANGPDB_IA32_DLINK2_FLAGS = > > > > > *_CLANGPDB_X64_ASLPP_FLAGS = DEF(GCC_ASLPP_FLAGS) > > > > DEF(CLANGPDB_X64_TARGET) > > > > > *_CLANGPDB_X64_VFRPP_FLAGS = DEF(GCC_VFRPP_FLAGS) > > > > DEF(CLANGPDB_X64_TARGET) > > > > > > > > > > -DEBUG_CLANGPDB_X64_CC_FLAGS = DEF(CLANGPDB_ALL_CC_FLAGS) > > -m64 > > > > "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone -mcmodel=small -Oz > > -flto > > > > DEF(CLANGPDB_X64_TARGET) -gcodeview -funwind-tables > > > > > +DEBUG_CLANGPDB_X64_CC_FLAGS = DEF(CLANGPDB_ALL_CC_FLAGS) > > -m64 > > > > -march=x86-64 "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone > > > > -mcmodel=small -Oz -flto DEF(CLANGPDB_X64_TARGET) -gcodeview > > > > -funwind-tables > > > > > DEBUG_CLANGPDB_X64_DLINK_FLAGS = /NOLOGO /NODEFAULTLIB > > > > /IGNORE:4001 /OPT:REF /OPT:ICF=10 /ALIGN:32 /FILEALIGN:32 /Machine:X64 > > /DLL > > > > /ENTRY:$(IMAGE_ENTRY_POINT) /SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER > > /SAFESEH:NO > > > > /BASE:0 /DEBUG:GHASH /MLLVM:-exception-model=wineh /lldmap > > > > > DEBUG_CLANGPDB_X64_DLINK2_FLAGS = > > > > > DEBUG_CLANGPDB_X64_GENFW_FLAGS = --keepexceptiontable > > > > > > > > > > -RELEASE_CLANGPDB_X64_CC_FLAGS = DEF(CLANGPDB_ALL_CC_FLAGS) > > -m64 > > > > "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone -mcmodel=small -Oz > > -flto > > > > DEF(CLANGPDB_X64_TARGET) -fno-unwind-tables > > > > > +RELEASE_CLANGPDB_X64_CC_FLAGS = DEF(CLANGPDB_ALL_CC_FLAGS) > > -m64 > > > > -march=x86-64 "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone > > > > -mcmodel=small -Oz -flto DEF(CLANGPDB_X64_TARGET) -fno-unwind-tables > > > > > RELEASE_CLANGPDB_X64_DLINK_FLAGS = /NOLOGO /NODEFAULTLIB > > > > /IGNORE:4001 /IGNORE:4254 /OPT:REF /OPT:ICF=10 /ALIGN:32 /FILEALIGN:32 > > > > /SECTION:.xdata,D /SECTION:.pdata,D /Machine:X64 /DLL > > > > /ENTRY:$(IMAGE_ENTRY_POINT) /SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER > > /SAFESEH:NO > > > > /BASE:0 /MERGE:.rdata=.data /MLLVM:-exception-model=wineh /lldmap > > > > > RELEASE_CLANGPDB_X64_DLINK2_FLAGS = > > > > > RELEASE_CLANGPDB_X64_GENFW_FLAGS = > > > > > > > > > > -NOOPT_CLANGPDB_X64_CC_FLAGS = DEF(CLANGPDB_ALL_CC_FLAGS) > > -m64 > > > > "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone -mcmodel=small -O0 > > > > DEF(CLANGPDB_X64_TARGET) -gcodeview -funwind-tables > > > > > +NOOPT_CLANGPDB_X64_CC_FLAGS = DEF(CLANGPDB_ALL_CC_FLAGS) > > -m64 > > > > -march=x86-64 "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone > > > > -mcmodel=small -O0 DEF(CLANGPDB_X64_TARGET) -gcodeview -funwind-tables > > > > > NOOPT_CLANGPDB_X64_DLINK_FLAGS = /NOLOGO /NODEFAULTLIB > > > > /IGNORE:4001 /OPT:REF /OPT:ICF=10 /ALIGN:32 /FILEALIGN:32 /Machine:X64 > > /DLL > > > > /ENTRY:$(IMAGE_ENTRY_POINT) /SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER > > /SAFESEH:NO > > > > /BASE:0 /DEBUG:GHASH /MLLVM:-exception-model=wineh /lldmap > > > > > NOOPT_CLANGPDB_X64_DLINK2_FLAGS = > > > > > NOOPT_CLANGPDB_X64_GENFW_FLAGS = --keepexceptiontable > > > > > @@ -2901,15 +2901,15 @@ NOOPT_CLANGDWARF_IA32_DLINK2_FLAGS = > > > > DEF(CLANGDWARF_IA32_DLINK2_FLAGS) -O0 - > > > > > *_CLANGDWARF_X64_ASLPP_FLAGS = DEF(GCC_ASLPP_FLAGS) > > > > DEF(CLANG38_X64_TARGET) > > > > > *_CLANGDWARF_X64_VFRPP_FLAGS = DEF(GCC_VFRPP_FLAGS) > > > > DEF(CLANG38_X64_TARGET) > > > > > > > > > > -DEBUG_CLANGDWARF_X64_CC_FLAGS = DEF(CLANG38_ALL_CC_FLAGS) > > -m64 > > > > "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone -mcmodel=small -fpie > > -Oz > > > > -flto DEF(CLANG38_X64_TARGET) -g > > > > > +DEBUG_CLANGDWARF_X64_CC_FLAGS = DEF(CLANG38_ALL_CC_FLAGS) > > -m64 > > > > -march=x86-64 "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone > > > > -mcmodel=small -fpie -Oz -flto DEF(CLANG38_X64_TARGET) -g > > > > > DEBUG_CLANGDWARF_X64_DLINK_FLAGS = > > > > DEF(CLANGDWARF_IA32_X64_DLINK_FLAGS) -flto -Wl,-O3 -Wl,-melf_x86_64 > > > > -Wl,--oformat,elf64-x86-64 -Wl,-pie -mcmodel=small > > > > -Wl,--apply-dynamic-relocs > > > > > DEBUG_CLANGDWARF_X64_DLINK2_FLAGS = > > > > DEF(CLANGDWARF_X64_DLINK2_FLAGS) -O3 -fuse-ld=lld > > > > > > > > > > -RELEASE_CLANGDWARF_X64_CC_FLAGS = DEF(CLANG38_ALL_CC_FLAGS) > > -m64 > > > > "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone -mcmodel=small -fpie > > -Oz > > > > -flto DEF(CLANG38_X64_TARGET) > > > > > +RELEASE_CLANGDWARF_X64_CC_FLAGS = DEF(CLANG38_ALL_CC_FLAGS) > > -m64 > > > > -march=x86-64 "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone > > > > -mcmodel=small -fpie -Oz -flto DEF(CLANG38_X64_TARGET) > > > > > RELEASE_CLANGDWARF_X64_DLINK_FLAGS = > > > > DEF(CLANGDWARF_IA32_X64_DLINK_FLAGS) -flto -Wl,-O3 -Wl,-melf_x86_64 > > > > -Wl,--oformat,elf64-x86-64 -Wl,-pie -mcmodel=small > > > > -Wl,--apply-dynamic-relocs > > > > > RELEASE_CLANGDWARF_X64_DLINK2_FLAGS = > > > > DEF(CLANGDWARF_X64_DLINK2_FLAGS) -O3 -fuse-ld=lld > > > > > > > > > > -NOOPT_CLANGDWARF_X64_CC_FLAGS = DEF(CLANG38_ALL_CC_FLAGS) > > -m64 > > > > "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone -mcmodel=small -fpie > > -O0 > > > > DEF(CLANG38_X64_TARGET) -g > > > > > +NOOPT_CLANGDWARF_X64_CC_FLAGS = DEF(CLANG38_ALL_CC_FLAGS) > > -m64 > > > > -march=x86-64 "-DEFIAPI=__attribute__((ms_abi))" -mno-red-zone > > > > -mcmodel=small -fpie -O0 DEF(CLANG38_X64_TARGET) -g > > > > > NOOPT_CLANGDWARF_X64_DLINK_FLAGS = > > > > DEF(CLANGDWARF_IA32_X64_DLINK_FLAGS) -Wl,-O0 -Wl,-melf_x86_64 > > > > -Wl,--oformat,elf64-x86-64 -Wl,-pie -mcmodel=small > > > > -Wl,--apply-dynamic-relocs > > > > > NOOPT_CLANGDWARF_X64_DLINK2_FLAGS = > > > > DEF(CLANGDWARF_X64_DLINK2_FLAGS) -O0 -fuse-ld=lld > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >