43 lines
1.1 KiB
Bash
Executable File
43 lines
1.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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VERSION="3.14.3-emqx-8"
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# ensure dir
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cd -P -- "$(dirname -- "${BASH_SOURCE[0]}")/.."
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DOWNLOAD_URL='https://github.com/emqx/rebar3/releases/download'
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download() {
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echo "downloading rebar3 ${VERSION}"
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curl -f -L "${DOWNLOAD_URL}/${VERSION}/rebar3" -o ./rebar3
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}
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version_gte() {
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test "$(printf '%s\n' "$1" "$2" | sort -V | head -n 1)" = "$2"
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}
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# get the version number from the second line of the escript
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# because command `rebar3 -v` tries to load rebar.config
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# which is slow and may print some logs
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version() {
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head -n 2 ./rebar3 | tail -n 1 | tr ' ' '\n' | grep -E '^.+-emqx-.+'
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}
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echo "OTP_VSN: ${OTP_VSN}"
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if version_gte "${OTP_VSN}" "24.0"; then
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## rebar3 tag 3.18.0-emqx-1 is compiled using otp24.1.5.
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## we have to use an otp24-compiled rebar3 because the defination of record #application{}
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## in systools.hrl is changed in otp24.
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VERSION="3.18.0-emqx-1"
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fi
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if [ -f 'rebar3' ] && [ "$(version)" = "$VERSION" ]; then
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echo "rebar3 ${VERSION} already exists"
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exit 0
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fi
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download
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chmod +x ./rebar3
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