On Mon, Dec 16, 2024 at 03:12:51PM -0800, Charlie Jenkins wrote:
> Similar to ld-version, add a way to check the version of objdump. This
> should most of the time end up being the binutils version or the llvm
> version.
>
> Signed-off-by: Charlie Jenkins <charlie@xxxxxxxxxxxx>
This fails for allmodconfig and rv32_defconfig with clang. 19.1.1
according to Bjorn :)
Cheers,
Conor.
> ---
> init/Kconfig | 10 +++++++
> scripts/Kconfig.include | 6 ++++
> scripts/objdump-version.sh | 69 ++++++++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 85 insertions(+)
>
> diff --git a/init/Kconfig b/init/Kconfig
> index a20e6efd3f0fbdd7f0df2448854cc30734a0ee4f..0b5d36f939e1de89c12ebdd61e4815015314d4f1 100644
> --- a/init/Kconfig
> +++ b/init/Kconfig
> @@ -60,6 +60,16 @@ config LLD_VERSION
> default $(ld-version) if LD_IS_LLD
> default 0
>
> +config OBJDUMP_IS_GNU
> + def_bool $(success,test "$(objdump-name)" = objdump)
> +
> +config OBJDUMP_IS_LLVM
> + def_bool $(success,test "$(objdump-name)" = llvm-objdump)
> +
> +config OBJDUMP_VERSION
> + int
> + default $(objdump-version)
> +
> config RUSTC_VERSION
> int
> default $(rustc-version)
> diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include
> index 33193ca6e8030e659d6b321acaea1acd42c387a4..cb3e2d2564fea8cce780adb3be672c9596b7ccf2 100644
> --- a/scripts/Kconfig.include
> +++ b/scripts/Kconfig.include
> @@ -58,6 +58,12 @@ $(error-if,$(success,test -z "$(ld-info)"),Sorry$(comma) this linker is not supp
> ld-name := $(shell,set -- $(ld-info) && echo $1)
> ld-version := $(shell,set -- $(ld-info) && echo $2)
>
> +# Get the objdump name, version, and error out if it is not supported.
> +objdump-info := $(shell,$(srctree)/scripts/objdump-version.sh $(OBJDUMP))
> +$(error-if,$(success,test -z "$(objdump-info)"),Sorry$(comma) this objdump is not supported.)
> +objdump-name := $(shell,set -- $(objdump-info) && echo $1)
> +objdump-version := $(shell,set -- $(objdump-info) && echo $2)
> +
> # machine bit flags
> # $(m32-flag): -m32 if the compiler supports it, or an empty string otherwise.
> # $(m64-flag): -m64 if the compiler supports it, or an empty string otherwise.
> diff --git a/scripts/objdump-version.sh b/scripts/objdump-version.sh
> new file mode 100755
> index 0000000000000000000000000000000000000000..fa24f8dc2d3c42fd1195fceb3c96b27f7127db25
> --- /dev/null
> +++ b/scripts/objdump-version.sh
> @@ -0,0 +1,69 @@
> +#!/bin/sh
> +# SPDX-License-Identifier: GPL-2.0
> +#
> +# Print the objdump name and its version in a 5 or 6-digit form.
> +# Also, perform the minimum 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} + ${3:-0}))
> +}
> +
> +orig_args="$@"
> +
> +# Get the first line of the --version output.
> +IFS='
> +'
> +set -- $(LC_ALL=C "$@" --version)
> +
> +# Split the line on spaces.
> +IFS=' '
> +set -- $1
> +
> +min_tool_version=$(dirname $0)/min-tool-version.sh
> +
> +if [ "$1" = GNU -a "$2" = objdump ]; then
> + shift $(($# - 1))
> + version=$1
> + min_version=$($min_tool_version binutils)
> + disp_name="GNU objdump"
> +else
> + while [ $# -gt 1 -a "$1" != "LLVM" ]; do
> + shift
> + done
> +
> + if [ "$1" = LLVM ]; then
> + version=$3
> + min_version=$($min_tool_version llvm)
> + disp_name="llvm-objdump"
> + else
> + echo "$orig_args: unknown objdump" >&2
> + exit 1
> + fi
> +fi
> +
> +version=${version%%[!0-9.]*}
> +
> +cversion=$(get_canonical_version $version)
> +min_cversion=$(get_canonical_version $min_version)
> +
> +if [ "$cversion" -lt "$min_cversion" ]; then
> + echo >&2 "***"
> + echo >&2 "*** objdump is too old."
> + echo >&2 "*** Your $disp_name version: $version"
> + echo >&2 "*** Minimum $disp_name version: $min_version"
> + echo >&2 "***"
> + exit 1
> +fi
> +
> +echo objdump $cversion
>
> --
> 2.34.1
>
>
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