waf: define git versions in a generated ap_version.h header

Tools/ardupilotwaf/ardupilotwaf.py

@@ -5,7 +5,7 @@ from __future__ import print_function
 from waflib import Logs, Options, Utils
 from waflib.Build import BuildContext
 from waflib.Configure import conf
-import os.path
+import os.path, os
 
 SOURCE_EXTS = [
     '*.S',
@@ -204,6 +204,20 @@ def ap_find_tests(bld, use=[]):
             cxxflags=['-Wno-undef'],
         )
 
+_versions = []
+
+@conf
+def ap_version_append_str(ctx, k, v):
+    ctx.env['AP_VERSION_ITEMS'] += [(k, '"{}"'.format(os.environ.get(k, v)))]
+
+@conf
+def write_version_header(ctx, tgt):
+    with open(tgt, 'w') as f:
+        print('#pragma once\n', file=f)
+
+        for k, v in ctx.env['AP_VERSION_ITEMS']:
+            print('#define {} {}'.format(k, v), file=f)
+
 @conf
 def ap_find_benchmarks(bld, use=[]):
     if not bld.env.HAS_GBENCHMARK:

Tools/ardupilotwaf/boards.py

@@ -139,7 +139,7 @@ class Board:
         ]
 
     def build(self, bld):
-        pass
+        bld.ap_version_append_str('GIT_VERSION', bld.git_head_hash(short=True))
 
 Board = BoardMeta('Board', Board.__bases__, dict(Board.__dict__))
 
@@ -375,6 +375,8 @@ class px4(Board):
 
     def build(self, bld):
         super(px4, self).build(bld)
+        bld.ap_version_append_str('NUTTX_GIT_VERSION', bld.git_submodule_head_hash('PX4NuttX', short=True))
+        bld.ap_version_append_str('PX4_GIT_VERSION', bld.git_submodule_head_hash('PX4Firmware', short=True))
         bld.load('px4')
 
 class px4_v1(px4):

Tools/ardupilotwaf/git_submodule.py

@@ -104,9 +104,20 @@ def git_submodule(bld, git_submodule, **kw):
 
     return bld(**kw)
 
-@conf
-def git_submodule_head_hash(self, name):
-    module_node = self.srcnode.make_node(os.path.join('modules', name))
-    cmd = self.env.get_flat('GIT'), 'rev-parse', 'HEAD'
-    out = self.cmd_and_log(cmd, quiet=Context.BOTH, cwd=module_node.abspath())
+
+def _git_head_hash(ctx, path, short=False):
+    cmd = [ctx.env.get_flat('GIT'), 'rev-parse']
+    if short:
+        cmd.append('--short=8')
+    cmd.append('HEAD')
+    out = ctx.cmd_and_log(cmd, quiet=Context.BOTH, cwd=path)
     return out.strip()
+
+@conf
+def git_submodule_head_hash(self, name, short=False):
+    module_node = self.srcnode.make_node(os.path.join('modules', name))
+    return _git_head_hash(self, module_node.abspath(), short=short)
+
+@conf
+def git_head_hash(self, short=False):
+    return _git_head_hash(self, self.srcnode.abspath(), short=short)

Tools/ardupilotwaf/px4.py

@@ -17,11 +17,6 @@ def _load_dynamic_env_data(bld):
     for name in ('cxx_flags', 'include_dirs', 'definitions'):
         _dynamic_env_data[name] = bldnode.find_node(name).read().split(';')
 
-    _dynamic_env_data['DEFINES'] = [
-        'NUTTX_GIT_VERSION="%s"' % os.environ.get('NUTTX_GIT_VERSION', bld.git_submodule_head_hash('PX4NuttX')[:8]),
-        'PX4_GIT_VERSION="%s"' % os.environ.get('PX4_GIT_VERSION', bld.git_submodule_head_hash('PX4Firmware')[:8]),
-    ]
-
 @feature('px4_ap_stlib', 'px4_ap_program')
 @before_method('process_source')
 def px4_dynamic_env(self):
@@ -36,7 +31,6 @@ def px4_dynamic_env(self):
     self.env.append_value('INCLUDES', _dynamic_env_data['include_dirs'])
     self.env.prepend_value('CXXFLAGS', _dynamic_env_data['cxx_flags'])
     self.env.prepend_value('CXXFLAGS', _dynamic_env_data['definitions'])
-    self.env.append_value('DEFINES', _dynamic_env_data['DEFINES'])
 
 # Single static library
 # NOTE: This only works only for local static libraries dependencies - fake

wscript

@@ -19,12 +19,10 @@ from waflib import Build, ConfigSet, Context, Utils
 # pastable. Add the 'export waf="$PWD/waf"' trick to be copy-pastable
 # as well.
 
-# TODO: replace defines with the use of a generated config.h file
+# TODO: replace defines with the use of the generated ap_config.h file
 # this makes recompilation at least when defines change. which might
 # be sufficient.
 
-# TODO: set git version as part of build preparation.
-
 def init(ctx):
     env = ConfigSet.ConfigSet()
     try:
@@ -160,6 +158,10 @@ def _build_dynamic_sources(bld):
         ],
     )
 
+    bld.env.prepend_value('INCLUDES', [
+        bld.bldnode.abspath(),
+    ])
+
 def _build_common_taskgens(bld):
     # NOTE: Static library with vehicle set to UNKNOWN, shared by all
     # the tools and examples. This is the first step until the
@@ -221,6 +223,11 @@ def _build_recursion(bld):
     for d in dirs_to_recurse:
         bld.recurse(d)
 
+def _write_version_header(tsk):
+    bld = tsk.generator.bld
+    return bld.write_version_header(tsk.outputs[0].abspath())
+
+
 def build(bld):
     config_header = Utils.h_file(bld.bldnode.make_node('ap_config.h').abspath())
 
@@ -247,6 +254,15 @@ def build(bld):
 
     _build_recursion(bld)
 
+    bld(
+        name='ap_version',
+        target='ap_version.h',
+        vars=['AP_VERSION_ITEMS'],
+        rule=_write_version_header,
+        group='dynamic_sources',
+    )
+
+
 ardupilotwaf.build_command('check',
     program_group_list='all',
     doc='builds all programs and run tests',