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Reorganize platform detection and support Alpine amd64 #80

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75cf917
Reorganize platform detection into a lookup table
trekdemo Apr 1, 2026
3735ea4
Add support for Alpine Linux on AMD
trekdemo Apr 1, 2026
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92 changes: 40 additions & 52 deletions ext/or-tools/vendor.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -4,67 +4,55 @@
require "tmpdir"

version = "9.15.6755"

arch = RbConfig::CONFIG["host_cpu"]
arm = arch.match?(/arm|aarch64/i)

if RbConfig::CONFIG["host_os"].match?(/darwin/i)
if arm
filename = "or-tools_arm64_macOS-26.2_cpp_v#{version}.tar.gz"
checksum = "de0400a45939a66ee13cd8360c230e830fc5e03a6ed5a8a8b60f58a39e4a67bc"
else
filename = "or-tools_x86_64_macOS-26.2_cpp_v#{version}.tar.gz"
checksum = "d2d36482727520ccaff979eba16f53e6b2cabf40b6fd1126e4d3b34fad2fe851"
end
else
# try /etc/os-release with fallback to /usr/lib/os-release
# Lookup table based on the OS, Version, ARM?
platforms = {
["alpine", nil, false] => ["or-tools_amd64_alpine-edge_cpp_v#{version}.tar.gz", "f7324bb1be49dae7187441834d24e6f73eb7f93c13ea37d8b5fe45e9698ede2f"],
["arch", nil, false] => ["or-tools_amd64_archlinux_cpp_v#{version}.tar.gz", "5505079f7b2a6d9379ba6ae446a3a639226d455ef1cfa32d2d23ffc4566e3a4b"],
["darwin", nil, false] => ["or-tools_x86_64_macOS-26.2_cpp_v#{version}.tar.gz", "d2d36482727520ccaff979eba16f53e6b2cabf40b6fd1126e4d3b34fad2fe851"],
["darwin", nil, true] => ["or-tools_arm64_macOS-26.2_cpp_v#{version}.tar.gz", "de0400a45939a66ee13cd8360c230e830fc5e03a6ed5a8a8b60f58a39e4a67bc"],
["debian", "11", false] => ["or-tools_amd64_debian-11_cpp_v#{version}.tar.gz", "c6c4341ff8f9aae3e77f161ca8ea3bb0d22f35ff696596fd11ec51c5da6bd4f7"],
["debian", "12", false] => ["or-tools_amd64_debian-12_cpp_v#{version}.tar.gz", "b2c9870c8778eeb26c98742402da17da039c058fca7eca87be5c90832b04153c"],
["ubuntu", "20.04", false] => ["or-tools_amd64_ubuntu-20.04_cpp_v#{version}.tar.gz", "cfe5068b0fe4bafff916ab1b75670b341e80571c8cfd8b647dfe3e97a233e836"],
["ubuntu", "22.04", false] => ["or-tools_amd64_ubuntu-22.04_cpp_v#{version}.tar.gz", "0b30114d7c05f0596286bf3ef8d02adcf5f45be3b39273490e6bb74a2a9bd1ea"],
["ubuntu", "24.04", false] => ["or-tools_amd64_ubuntu-24.04_cpp_v#{version}.tar.gz", "6f389320672cee00b78aacefb2bde33fef0bb988c3b2735573b9fffd1047fbda"],
}

def detect_os
arm = RbConfig::CONFIG["host_cpu"].match?(/arm|aarch64/i)

return ['Windows', nil, arm] if Gem.win_platform?
return ["darwin", nil, arm] if RbConfig::CONFIG["host_os"].match?(/darwin/i)

# Try /etc/os-release with fallback to /usr/lib/os-release
# https://www.freedesktop.org/software/systemd/man/os-release.html
os_filename = File.exist?("/etc/os-release") ? "/etc/os-release" : "/usr/lib/os-release"

# for safety, parse rather than source
os_info = File.readlines(os_filename, chomp: true).to_h { |v| v.split("=", 2) }.transform_values { |v| v.delete_prefix('"').delete_suffix('"') } rescue {}

os = os_info["ID"]
os_version = os_info["VERSION_ID"]

if os == "ubuntu" && os_version == "24.04" && !arm
filename = "or-tools_amd64_ubuntu-24.04_cpp_v#{version}.tar.gz"
checksum = "6f389320672cee00b78aacefb2bde33fef0bb988c3b2735573b9fffd1047fbda"
elsif os == "ubuntu" && os_version == "22.04" && !arm
filename = "or-tools_amd64_ubuntu-22.04_cpp_v#{version}.tar.gz"
checksum = "0b30114d7c05f0596286bf3ef8d02adcf5f45be3b39273490e6bb74a2a9bd1ea"
elsif os == "ubuntu" && os_version == "20.04" && !arm
filename = "or-tools_amd64_ubuntu-20.04_cpp_v#{version}.tar.gz"
checksum = "cfe5068b0fe4bafff916ab1b75670b341e80571c8cfd8b647dfe3e97a233e836"
elsif os == "debian" && os_version == "12" && !arm
filename = "or-tools_amd64_debian-12_cpp_v#{version}.tar.gz"
checksum = "b2c9870c8778eeb26c98742402da17da039c058fca7eca87be5c90832b04153c"
elsif os == "debian" && os_version == "11" && !arm
filename = "or-tools_amd64_debian-11_cpp_v#{version}.tar.gz"
checksum = "c6c4341ff8f9aae3e77f161ca8ea3bb0d22f35ff696596fd11ec51c5da6bd4f7"
elsif os == "arch" && !arm
filename = "or-tools_amd64_archlinux_cpp_v#{version}.tar.gz"
checksum = "5505079f7b2a6d9379ba6ae446a3a639226d455ef1cfa32d2d23ffc4566e3a4b"
else
platform =
if Gem.win_platform?
"Windows"
elsif os || os_version
"#{os} #{os_version} #{arch}"
else
"Unknown"
end
[os_info["ID"], os_info["VERSION_ID"], arm]
end

# there is a binary download for Windows
# however, it's compiled with Visual Studio rather than MinGW (which RubyInstaller uses)
raise <<~MSG
Binary installation not available for this platform: #{platform}
os, os_version, arm = detect_os
filename, checksum = platforms[[os, os_version, arm]] || platforms[[os, nil, arm]]

Build the OR-Tools C++ library from source, then run:
bundle config build.or-tools --with-or-tools-dir=/path/to/or-tools
unless filename
platform =
if os || os_version
"#{os} #{os_version} #{RbConfig::CONFIG["host_cpu"]}"
else
"Unknown"
end

MSG
end
# there is a binary download for Windows
# however, it's compiled with Visual Studio rather than MinGW (which RubyInstaller uses)
raise <<~MSG
Binary installation not available for this platform: #{platform}

Build the OR-Tools C++ library from source, then run:
bundle config build.or-tools --with-or-tools-dir=/path/to/or-tools

MSG
end

short_version = version.split(".").first(2).join(".")
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