Process ld.so.conf for includes, fixes os.findlib in Linux.

1 files changed, 32 insertions, 6 deletions

diff --git a/src/base/os.lua b/src/base/os.lua
index e9a1ff0..87255da 100644
--- a/src/base/os.lua
+++ b/src/base/os.lua
@@ -19,6 +19,36 @@
 -- Scan the well-known system locations for a particular library.

 --

 

+	local function parse_ld_so_conf(conf_file)

+		-- Linux ldconfig file parser to find system library locations

+		local first, last

+		local dirs = { }

+		for line in io.lines(conf_file) do

+			-- ignore comments

+			first = line:find("#", 1, true)

+			if first ~= nil then

+				line = line:sub(1, first - 1)

+			end

+

+			if line ~= "" then

+				-- check for include files

+				first, last = line:find("include%s+")

+				if first ~= nil then

+					-- found include glob

+					local include_glob = line:sub(last + 1)

+					local includes = os.matchfiles(include_glob)

+					for _, v in ipairs(includes) do

+						dirs = table.join(dirs, parse_ld_so_conf(v))

+					end

+				else

+					-- found an actual ld path entry

+					table.insert(dirs, line)

+				end

+			end

+		end

+		return dirs

+	end

+

 	function os.findlib(libname)

 		local path, formats

 

@@ -37,12 +67,8 @@
 				formats = { "lib%s.so", "%s.so" }

 				path = os.getenv("LD_LIBRARY_PATH") or ""

 

-				io.input("/etc/ld.so.conf")

-				if io.input() then

-					for line in io.lines() do

-						path = path .. ":" .. line

-					end

-					io.input():close()

+				for _, v in ipairs(parse_ld_so_conf("/etc/ld.so.conf")) do

+					path = path .. ":" .. v

 				end

 			end