add import/export configs

1 files changed, 28 insertions, 5 deletions

diff --git a/xmake/actions/config/main.lua b/xmake/actions/config/main.lua
index 61f497c77..68f8ab531 100644
--- a/xmake/actions/config/main.lua
+++ b/xmake/actions/config/main.lua
@@ -48,6 +48,8 @@ function _option_filter(name)
     ,   verbose     = true
     ,   diagnosis   = true
     ,   require     = true
+    ,   export      = true
+    ,   import      = true
     }
     return not options[name]
 end
@@ -189,6 +191,14 @@ function _config_targets(targetname)
     end
 end
 
+-- export configs
+function _export_configs()
+    local exportfile = option.get("export")
+    if exportfile then
+        config.save(exportfile, {public = true})
+    end
+end
+
 -- main entry
 function main(opt)
 
@@ -229,7 +239,7 @@ force to build in current directory via run `xmake -P .`]], os.projectdir())
     -- the target name
     local targetname = option.get("target") or "all"
 
-    -- load the project configure
+    -- load the project configuration
     --
     -- priority: option > option_cache > global > option_default > config_check > project_check > config_cache
     --
@@ -243,7 +253,7 @@ force to build in current directory via run `xmake -P .`]], os.projectdir())
         end
     end
 
-    -- override configure from the options or cache
+    -- override configuration from the options or cache
     local options_history = {}
     if not option.get("clean") and not autogen then
         options_history = localcache.get("config", "options") or {}
@@ -258,7 +268,15 @@ force to build in current directory via run `xmake -P .`]], os.projectdir())
         config.set(name, value, {readonly = true})
     end
 
-    -- merge the cached configure
+    -- merge configuration from the given import file
+    local importfile = option.get("import")
+    if importfile and os.isfile(importfile) then
+        if config.load(importfile) then
+            options_changed = true
+        end
+    end
+
+    -- merge the cached configuration
     --
     -- @note we cannot load cache config when switching platform, arch ..
     -- so we need known whether options have been changed
@@ -268,7 +286,7 @@ force to build in current directory via run `xmake -P .`]], os.projectdir())
         configcache_loaded = config.load()
     end
 
-    -- merge the global configure
+    -- merge the global configuration
     for name, value in pairs(global.options()) do
         if config.get(name) == nil then
             config.set(name, value)
@@ -299,7 +317,7 @@ force to build in current directory via run `xmake -P .`]], os.projectdir())
     -- load platform instance
     local instance_plat = platform.load(plat, arch)
 
-    -- merge the checked configure
+    -- merge the checked configuration
     local recheck = _need_check(options_changed or not configcache_loaded or autogen)
     if recheck then
 
@@ -364,6 +382,11 @@ force to build in current directory via run `xmake -P .`]], os.projectdir())
         config.dump()
     end
 
+    -- export configs
+    if option.get("export") then
+        _export_configs()
+    end
+
     -- save options and config cache
     localcache.set("config", "recheck", false)
     localcache.set("config", "mtimes", project.mtimes())