add backtrace (#1607)

* add backtrace

* improve deps

* improve configs

packages/c/coost/xmake.lua

@@ -7,8 +7,12 @@ package("coost")
 
     add_versions("v3.0.0", "f962201201cd77aaf45f33d72bd012231a31d4310d30e9bb580ffb1e94c8148d")
 
-    for _, name in ipairs({"libcurl", "openssl"}) do
-        add_configs(name, {description = "Enable " .. name .. " library.", default = false, type = "boolean"})
+    for _, name in ipairs({"libcurl", "openssl", "libbacktrace"}) do
+        local default = false
+        if name == "libbacktrace" and is_plat("linux") then
+            default = true
+        end
+        add_configs(name, {description = "Enable " .. name .. " library.", default = default, type = "boolean"})
     end
 
     if is_plat("linux") then