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author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-29 14:24:39 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-29 14:24:39 -0700 |
commit | b0030af53a74a08c77ea11d3888da21542af2d0e (patch) | |
tree | 04130d622fdb59ee3ee1bbc015110f4054e32a8b /scripts/as-version.sh | |
parent | 9d31d2338950293ec19d9b095fbaa9030899dcb4 (diff) | |
parent | f634ca650f724347892068489c7920631a3aac6a (diff) | |
download | linux-b0030af53a74a08c77ea11d3888da21542af2d0e.tar.bz2 |
Merge tag 'kbuild-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Evaluate $(call cc-option,...) etc. only for build targets
- Add CONFIG_VMLINUX_MAP to generate .map file when linking vmlinux
- Remove unnecessary --gcc-toolchains Clang flag because the --prefix
flag finds the toolchains
- Do not pass Clang's --prefix flag when using the integrated as
- Check the assembler version in Kconfig time
- Add new CONFIG options, AS_VERSION, AS_IS_GNU, AS_IS_LLVM to clean up
some dependencies in Kconfig
- Fix invalid Module.symvers creation when building only modules
without vmlinux
- Fix false-positive modpost warnings when CONFIG_TRIM_UNUSED_KSYMS is
set, but there is no module to build
- Refactor module installation Makefile
- Support zstd for module compression
- Convert alpha and ia64 to use generic shell scripts to generate the
syscall headers
- Add a new elfnote to indicate if the kernel was built with LTO, which
will be used by pahole
- Flatten the directory structure under include/config/ so CONFIG
options and filenames match
- Change the deb source package name from linux-$(KERNELRELEASE) to
linux-upstream
* tag 'kbuild-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (42 commits)
kbuild: Add $(KBUILD_HOSTLDFLAGS) to 'has_libelf' test
kbuild: deb-pkg: change the source package name to linux-upstream
tools: do not include scripts/Kbuild.include
kbuild: redo fake deps at include/config/*.h
kbuild: remove TMPO from try-run
MAINTAINERS: add pattern for dummy-tools
kbuild: add an elfnote for whether vmlinux is built with lto
ia64: syscalls: switch to generic syscallhdr.sh
ia64: syscalls: switch to generic syscalltbl.sh
alpha: syscalls: switch to generic syscallhdr.sh
alpha: syscalls: switch to generic syscalltbl.sh
sysctl: use min() helper for namecmp()
kbuild: add support for zstd compressed modules
kbuild: remove CONFIG_MODULE_COMPRESS
kbuild: merge scripts/Makefile.modsign to scripts/Makefile.modinst
kbuild: move module strip/compression code into scripts/Makefile.modinst
kbuild: refactor scripts/Makefile.modinst
kbuild: rename extmod-prefix to extmod_prefix
kbuild: check module name conflict for external modules as well
kbuild: show the target directory for depmod log
...
Diffstat (limited to 'scripts/as-version.sh')
-rwxr-xr-x | scripts/as-version.sh | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/scripts/as-version.sh b/scripts/as-version.sh new file mode 100755 index 000000000000..8b9410e329df --- /dev/null +++ b/scripts/as-version.sh @@ -0,0 +1,82 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0-only +# +# Print the assembler name and its version in a 5 or 6-digit form. +# Also, perform the minimum version check. +# (If it is the integrated assembler, return 0 as the version, and +# skip the version check.) + +set -e + +# Convert the version string x.y.z to a canonical 5 or 6-digit form. +get_canonical_version() +{ + IFS=. + set -- $1 + + # If the 2nd or 3rd field is missing, fill it with a zero. + # + # The 4th field, if present, is ignored. + # This occurs in development snapshots as in 2.35.1.20201116 + echo $((10000 * $1 + 100 * ${2:-0} + ${3:-0})) +} + +# Clang fails to handle -Wa,--version unless -no-integrated-as is given. +# We check -(f)integrated-as, expecting it is explicitly passed in for the +# integrated assembler case. +check_integrated_as() +{ + while [ $# -gt 0 ]; do + if [ "$1" = -integrated-as -o "$1" = -fintegrated-as ]; then + # For the intergrated assembler, we do not check the + # version here. It is the same as the clang version, and + # it has been already checked by scripts/cc-version.sh. + echo LLVM 0 + exit 0 + fi + shift + done +} + +check_integrated_as "$@" + +orig_args="$@" + +# Get the first line of the --version output. +IFS=' +' +set -- $(LC_ALL=C "$@" -Wa,--version -c -x assembler /dev/null -o /dev/null 2>/dev/null) + +# Split the line on spaces. +IFS=' ' +set -- $1 + +min_tool_version=$(dirname $0)/min-tool-version.sh + +if [ "$1" = GNU -a "$2" = assembler ]; then + shift $(($# - 1)) + version=$1 + min_version=$($min_tool_version binutils) + name=GNU +else + echo "$orig_args: unknown assembler invoked" >&2 + exit 1 +fi + +# Some distributions append a package release number, as in 2.34-4.fc32 +# Trim the hyphen and any characters that follow. +version=${version%-*} + +cversion=$(get_canonical_version $version) +min_cversion=$(get_canonical_version $min_version) + +if [ "$cversion" -lt "$min_cversion" ]; then + echo >&2 "***" + echo >&2 "*** Assembler is too old." + echo >&2 "*** Your $name assembler version: $version" + echo >&2 "*** Minimum $name assembler version: $min_version" + echo >&2 "***" + exit 1 +fi + +echo $name $cversion |