5 files changed, 20 insertions, 0 deletions
diff --git a/CHANGELOG.md b/CHANGELOG.md
index dcd4a3ed7..11327afc0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,6 +27,7 @@
 * Improve to detect vstudio sdk and cross toolchains envirnoment
 * [#71](https://github.com/tboox/xmake/issues/71): Improve to detect compiler and linker from env vars
 * Improve the option detection (cache and multi-jobs) and increase 70% speed
+* [#129](https://github.com/tboox/xmake/issues/129): Check link deps and cache the target file
 
 ### Bugs fixed
 
@@ -330,6 +331,7 @@
 * 改进vstudio环境和交叉工具链的探测
 * [#71](https://github.com/tboox/xmake/issues/71): 改进从环境变量中探测链接器和编译器
 * 改进option选项检测，通过多任务检测，提升70%的检测速度
+* [#129](https://github.com/tboox/xmake/issues/129): 检测链接依赖，如果源文件没有改变，就不必重新链接目标文件了
 
 ### Bugs修复
 
diff --git a/xmake/actions/build/kinds/binary.lua b/xmake/actions/build/kinds/binary.lua
index 17d4e063c..52baad2a3 100644
--- a/xmake/actions/build/kinds/binary.lua
+++ b/xmake/actions/build/kinds/binary.lua
@@ -34,6 +34,11 @@ function _build_from_objects(target, buildinfo)
     -- build objects
     object.build(target, buildinfo)
 
+    -- the object files are not modified?
+    if not buildinfo.objects_modified then
+        return 
+    end
+
     -- expand object files with *.o/obj
     local objectfiles = {}
     for _, objectfile in ipairs(target:objectfiles()) do
diff --git a/xmake/actions/build/kinds/object.lua b/xmake/actions/build/kinds/object.lua
index 0e808ab0c..513cb2b9e 100644
--- a/xmake/actions/build/kinds/object.lua
+++ b/xmake/actions/build/kinds/object.lua
@@ -140,6 +140,9 @@ function _build_object(target, buildinfo, index, sourcebatch, ccache)
         return 
     end
 
+    -- the object files are modified
+    buildinfo.objects_modified = true
+
     -- is verbose?
     local verbose = option.get("verbose")
 
diff --git a/xmake/actions/build/kinds/shared.lua b/xmake/actions/build/kinds/shared.lua
index 158b71ccf..d4fa90257 100644
--- a/xmake/actions/build/kinds/shared.lua
+++ b/xmake/actions/build/kinds/shared.lua
@@ -34,6 +34,11 @@ function _build_from_objects(target, buildinfo)
     -- build objects
     object.build(target, buildinfo)
 
+    -- the object files are not modified?
+    if not buildinfo.objects_modified then
+        return 
+    end
+
     -- make headers
     local srcheaders, dstheaders = target:headerfiles()
     if srcheaders and dstheaders then
diff --git a/xmake/actions/build/kinds/static.lua b/xmake/actions/build/kinds/static.lua
index a4971cd7f..9b73742a3 100644
--- a/xmake/actions/build/kinds/static.lua
+++ b/xmake/actions/build/kinds/static.lua
@@ -34,6 +34,11 @@ function _build_from_objects(target, buildinfo)
     -- build objects
     object.build(target, buildinfo)
 
+    -- the object files are not modified?
+    if not buildinfo.objects_modified then
+        return 
+    end
+
     -- make headers
     local srcheaders, dstheaders = target:headerfiles()
     if srcheaders and dstheaders then