Automagic scan-build support.

mesonbuild/backend/ninjabackend.py

@@ -188,6 +188,7 @@ int dummy;
             outfile.write('# Coverage rules\n\n')
             self.generate_coverage_rules(outfile)
         outfile.write('# Suffix\n\n')
+        self.generate_utils(outfile)
         self.generate_ending(outfile)
         # Only ovewrite the old build file after the new one has been
         # fully created.
@@ -1797,6 +1798,16 @@ rule FORTRAN_DEP_HACK
                     other_deps.append(outfilename)
         return (src_deps, other_deps)
 
+    # For things like scan-build and other helper tools we might have.
+    def generate_utils(self, outfile):
+        cmd = [sys.executable, self.environment.get_build_command(),
+               '--internal', 'scanbuild', self.environment.source_dir, self.environment.build_dir,
+               sys.executable, self.environment.get_build_command()]
+        elem = NinjaBuildElement(self.all_outputs, 'scan-build', 'CUSTOM_COMMAND', 'PHONY')
+        elem.add_item('COMMAND', cmd)
+        elem.add_item('pool', 'console')
+        elem.write(outfile)
+
     def generate_ending(self, outfile):
         targetlist = [self.get_target_filename(t) for t in self.build.get_targets().values()\
                       if not isinstance(t, build.RunTarget)]

mesonbuild/coredata.py

@@ -229,4 +229,5 @@ forbidden_target_names = {'clean': None,
                           'benchmark': None,
                           'install': None,
                           'build.ninja': None,
+                          'scan-build': None,
                          }

mesonbuild/mesonmain.py

@@ -196,6 +196,9 @@ def run_script_command(args):
     elif cmdname == 'symbolextractor':
         import mesonbuild.scripts.symbolextractor as abc
         cmdfunc = abc.run
+    elif cmdname == 'scanbuild':
+        import mesonbuild.scripts.scanbuild as abc
+        cmdfunc = abc.run
     elif cmdname == 'vcstagger':
         import mesonbuild.scripts.vcstagger as abc
         cmdfunc = abc.run

mesonbuild/scripts/scanbuild.py

@@ -0,0 +1,39 @@
+# Copyright 2016 The Meson development team
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import sys, os
+import subprocess
+import shutil
+import tempfile
+
+def scanbuild(srcdir, blddir, privdir, logdir, args):
+    with tempfile.TemporaryDirectory(dir=privdir) as scandir:
+        meson_cmd = ['scan-build'] + args
+        build_cmd = ['scan-build', '-o', logdir, 'ninja']
+        rc = subprocess.call(meson_cmd + [srcdir, scandir])
+        if rc != 0:
+            return rc
+        return subprocess.call(build_cmd)
+
+def run(args):
+    srcdir = args[0]
+    blddir = args[1]
+    meson_cmd = args[2:]
+    privdir = os.path.join(blddir, 'meson-private')
+    logdir = os.path.join(blddir, 'meson-logs/scanbuild')
+    shutil.rmtree(logdir, ignore_errors=True)
+    if not shutil.which('scan-build'):
+        print('Scan-build not installed')
+        return 1
+    return scanbuild(srcdir, blddir, privdir, logdir, meson_cmd)