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Add libc detection for musl vs glibc on Linux #50

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Merged
bytemain merged 2 commits into from
Jan 18, 2026
Merged

Add libc detection for musl vs glibc on Linux #50

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Initial plan
Copilot Jan 18, 2026
307ab2f
Add libc detection for musl vs glibc on Linux systems
Copilot Jan 18, 2026
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16 changes: 15 additions & 1 deletion lib/foojay.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,20 @@ local foojay = {}
local URL =
"https://api.foojay.io/disco/v3.0/packages/jdks?version=%s&distribution=%s&architecture=%s&archive_type=%s&operating_system=%s&lib_c_type=%s&release_status=ga&directly_downloadable=true"

--- Detects the libc type on Linux systems (glibc or musl)
--- @return string "glibc" or "musl"
local function detect_lib_c_type()
local handle = io.popen("ldd --version 2>&1")
if handle then
local result = handle:read("*a")
handle:close()
if result and result:lower():find("musl") then
return "musl"
end
end
return "glibc"
end

foojay.fetchtJdkList= function (distribution, version)

local os = RUNTIME.osType
Expand All @@ -24,7 +38,7 @@ foojay.fetchtJdkList= function (distribution, version)

local lib_c_type = ""
if os == "linux" then
lib_c_type = "glibc"
lib_c_type = detect_lib_c_type()
end

-- Convert arm64 to aarch64 for foojay API compatibility
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