1 #!/bin/sh 1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0 2 # SPDX-License-Identifier: GPL-2.0
3 # 3 #
4 # Usage: $ ./rustc-version.sh rustc 4 # Usage: $ ./rustc-version.sh rustc
5 # 5 #
6 # Print the Rust compiler version in a 6 or 7- 6 # Print the Rust compiler version in a 6 or 7-digit form.
7 7
8 # Convert the version string x.y.z to a canoni 8 # Convert the version string x.y.z to a canonical up-to-7-digits form.
9 # 9 #
10 # Note that this function uses one more digit 10 # Note that this function uses one more digit (compared to other
11 # instances in other version scripts) to give 11 # instances in other version scripts) to give a bit more space to
12 # `rustc` since it will reach 1.100.0 in late 12 # `rustc` since it will reach 1.100.0 in late 2026.
13 get_canonical_version() 13 get_canonical_version()
14 { 14 {
15 IFS=. 15 IFS=.
16 set -- $1 16 set -- $1
17 echo $((100000 * $1 + 100 * $2 + $3)) 17 echo $((100000 * $1 + 100 * $2 + $3))
18 } 18 }
19 19
20 if output=$("$@" --version 2>/dev/null); then 20 if output=$("$@" --version 2>/dev/null); then
21 set -- $output 21 set -- $output
22 get_canonical_version $2 22 get_canonical_version $2
23 else 23 else
24 echo 0 24 echo 0
25 exit 1 25 exit 1
26 fi 26 fi
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