Make build mixin lib automatic

Author: learnforpractice

build-linux.sh

@@ -1 +1,2 @@
+python3 src/check_modification.py src/mixin
 CC=clang CXX=clang++ python3 setup.py sdist bdist_wheel

build-mac.sh

@@ -1,2 +1,2 @@
-#rm src/mixin/libmixin.a
+python3 src/check_modification.py src/mixin
 CC=clang CXX=clang++ python3 setup.py sdist bdist_wheel --plat-name macosx-10.9-x86_64

src/CMakeLists.txt

@@ -16,6 +16,7 @@ target_include_directories(_mixin PRIVATE
 add_custom_command(OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/mixin/libmixin.a
     COMMAND go build -o libmixin.a -buildmode=c-archive
     DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/mixin/mixin_api.go
+    DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/mixin/main.go
     COMMENT "Creating libmixin.a"
     WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/mixin
 )

src/check_modification.py

@@ -0,0 +1,21 @@
+import os
+import sys
+
+root_path = sys.argv[1]
+
+def check_modification():   
+    lib_name = os.path.join(root_path, 'libmixin.a')
+    modify_time = os.path.getmtime(lib_name)
+    for root, dirs, files in os.walk(root_path):
+        for f in files:
+            if f[-3:] == '.go':
+                f = os.path.join(root, f)
+                file_time = os.path.getmtime(f)
+                if modify_time < file_time:
+                    return True
+    return False
+
+r = check_modification()
+if r:
+    print('mixin lib need to rebuild.')
+    os.system(f'touch {root_path}/main.go')