Buildresult: kbuild/x86_64-allnoconfig/x86_64-gcc4.6 built on Apr 8 2020, 13:28

kisskb

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Status:	OK
Date/Time:	Apr 8 2020, 13:28
Duration:	0:00:21.071671
Builder:	blade46
Revision:	kbuild: support LLVM=1 to switch the default tools to Clang/LLVM (`7d42223a874f7426b58792166fce20f78581b5c4)`
Target:	kbuild/x86_64-allnoconfig/x86_64-gcc4.6
Branch:	kbuild
Compiler:	x86_64-gcc4.6 (x86_64-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:	allnoconfig (download)
Log:	Download original Possible warnings (5) arch/x86/kernel/apic/io_apic.c:1037:6: warning: 'irq' may be used uninitialized in this function [-Wuninitialized] arch/x86/kernel/e820.c:665:16: warning: 'gapstart' may be used uninitialized in this function [-Wuninitialized] kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] fs/namei.c:1805:10: warning: 'inode' may be used uninitialized in this function [-Wuninitialized] fs/namei.c:1805:10: warning: 'seq' may be used uninitialized in this function [-Wuninitialized] Full Log # git rev-parse -q --verify 7d42223a874f7426b58792166fce20f78581b5c4^{commit} 7d42223a874f7426b58792166fce20f78581b5c4 already have revision, skipping fetch # git checkout -q -f -B kisskb 7d42223a874f7426b58792166fce20f78581b5c4 # git clean -qxdf # < git log -1 # commit 7d42223a874f7426b58792166fce20f78581b5c4 # Author: Masahiro Yamada <masahiroy@kernel.org> # Date: Wed Apr 8 03:43:36 2020 +0900 # # kbuild: support LLVM=1 to switch the default tools to Clang/LLVM # # As Documentation/kbuild/llvm.rst implies, building the kernel with a # full set of LLVM tools gets very verbose and unwieldy. # # Provide a single switch LLVM=1 to use Clang and LLVM tools instead # of GCC and Binutils. You can pass it from the command line or as an # environment variable. # # Please note LLVM=1 does not turn on the integrated assembler. You need # to pass LLVM_IA=1 to use it. When the upstream kernel is ready for the # integrated assembler, I think we can make it default. # # We discussed what we need, and we agreed to go with a simple boolean # flag that switches both target and host tools: # # https://lkml.org/lkml/2020/3/28/494 # https://lkml.org/lkml/2020/4/3/43 # # Some items discussed, but not adopted: # # - LLVM_DIR # # When multiple versions of LLVM are installed, I just thought supporting # LLVM_DIR=/path/to/my/llvm/bin/ might be useful. # # CC = $(LLVM_DIR)clang # LD = $(LLVM_DIR)ld.lld # ... # # However, we can handle this by modifying PATH. So, we decided to not do # this. # # - LLVM_SUFFIX # # Some distributions (e.g. Debian) package specific versions of LLVM with # naming conventions that use the version as a suffix. # # CC = clang$(LLVM_SUFFIX) # LD = ld.lld(LLVM_SUFFIX) # ... # # will allow a user to pass LLVM_SUFFIX=-11 to use clang-11 etc., # but the suffixed versions in /usr/bin/ are symlinks to binaries in # /usr/lib/llvm-#/bin/, so this can also be handled by PATH. # # Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> # Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> # Tested-by: Nathan Chancellor <natechancellor@gmail.com> # build # Tested-by: Nick Desaulniers <ndesaulniers@google.com> # Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> # < /opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-ld --version # < git log --format=%s --max-count=1 7d42223a874f7426b58792166fce20f78581b5c4 # < make -s -j 32 ARCH=x86_64 O=/kisskb/build/kbuild_x86_64-allnoconfig_x86_64-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux- allnoconfig # < make -s -j 32 ARCH=x86_64 O=/kisskb/build/kbuild_x86_64-allnoconfig_x86_64-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux- help # make -s -j 32 ARCH=x86_64 O=/kisskb/build/kbuild_x86_64-allnoconfig_x86_64-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux- olddefconfig # make -s -j 32 ARCH=x86_64 O=/kisskb/build/kbuild_x86_64-allnoconfig_x86_64-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux- /kisskb/src/arch/x86/kernel/apic/io_apic.c: In function 'mp_map_pin_to_irq': /kisskb/src/arch/x86/kernel/apic/io_apic.c:1037:6: warning: 'irq' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/arch/x86/kernel/e820.c: In function 'e820__setup_pci_gap': /kisskb/src/arch/x86/kernel/e820.c:665:16: warning: 'gapstart' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/namei.c: In function 'handle_dots': /kisskb/src/fs/namei.c:1805:10: warning: 'inode' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/namei.c:1805:10: warning: 'seq' may be used uninitialized in this function [-Wuninitialized] Completed OK # rm -rf /kisskb/build/kbuild_x86_64-allnoconfig_x86_64-gcc4.6 # Build took: 0:00:21.071671

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