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-rwxr-xr-xscripts/as-version.sh82
1 files changed, 82 insertions, 0 deletions
diff --git a/scripts/as-version.sh b/scripts/as-version.sh
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index 000000000..af7174761
--- /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 -fno-integrated-as is given.
+# We check -fintegrated-as, expecting it is explicitly passed in for the
+# integrated assembler case.
+check_integrated_as()
+{
+ while [ $# -gt 0 ]; do
+ if [ "$1" = -fintegrated-as ]; then
+ # For the integrated assembler, we do not check the
+ # version here. It is the same as the clang version, and
+ # it has been already checked by scripts/cc-version.sh.
+ echo LLVM 0
+ exit 0
+ fi
+ shift
+ done
+}
+
+check_integrated_as "$@"
+
+orig_args="$@"
+
+# Get the first line of the --version output.
+IFS='
+'
+set -- $(LC_ALL=C "$@" -Wa,--version -c -x assembler-with-cpp /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