New lib_archive option to control library archiving and linking behaviour // Resolve #993

Author: ivankravets

HISTORY.rst

@@ -9,6 +9,9 @@ PlatformIO 3.0
 
 * Pre/Post extra scripting for advanced control of PIO Build System
   (`issue #891 <https://github.com/platformio/platformio-core/issues/891>`_)
+* New `lib_archive <http://docs.platformio.org/page/projectconf/section_env_library.html#lib-archive>`_
+  option to control library archiving and linking behaviour
+  (`issue #993 <https://github.com/platformio/platformio-core/issues/993>`_)
 * Add "inc" folder automatically to CPPPATH when "src" is available (works for project and library)
   (`issue #1003 <https://github.com/platformio/platformio-core/issues/1003>`_)
 * Use a root of library when filtering source code using

docs

@@ -50,6 +50,7 @@
     ("LIB_DEPS",),
     ("LIB_IGNORE",),
     ("LIB_EXTRA_DIRS",),
+    ("LIB_ARCHIVE",),
 
     # board options
     ("BOARD",),

platformio/builder/main.py

@@ -169,7 +169,7 @@ def extra_script(self):
 
     @property
     def lib_archive(self):
-        return True
+        return self.env.get("LIB_ARCHIVE", "") != "false"
 
     @staticmethod
     def validate_ldf_mode(mode):

platformio/builder/tools/piolib.py

@@ -132,11 +132,11 @@ class EnvironmentProcessor(object):
                      "upload_protocol", "upload_speed", "upload_flags",
                      "upload_resetmethod", "lib_deps", "lib_ignore",
                      "lib_extra_dirs", "lib_ldf_mode", "lib_compat_mode",
-                     "piotest", "test_transport", "test_ignore", "test_port",
-                     "debug_tool", "debug_port", "debug_init_cmds",
-                     "debug_extra_cmds", "debug_server", "debug_init_break",
-                     "debug_load_cmd", "monitor_port", "monitor_baud",
-                     "monitor_rts", "monitor_dtr")
+                     "lib_archive", "piotest", "test_transport", "test_ignore",
+                     "test_port", "debug_tool", "debug_port",
+                     "debug_init_cmds", "debug_extra_cmds", "debug_server",
+                     "debug_init_break", "debug_load_cmd", "monitor_port",
+                     "monitor_baud", "monitor_rts", "monitor_dtr")
 
     IGNORE_BUILD_OPTIONS = ("test_transport", "test_filter", "test_ignore",
                             "test_port", "debug_tool", "debug_port",