Better sanity testing.

compilers.py

@@ -223,6 +223,9 @@ class CCompiler():
         return os.path.split(header_name)[-1] + '.' + self.get_pch_suffix()
 
     def sanity_check(self, work_dir):
+        mlog.debug('Sanity testing C compiler:', ' '.join(self.exelist))
+        mlog.debug('Is cross compiler: %s.' % str(self.is_cross))
+
         source_name = os.path.join(work_dir, 'sanitycheckc.c')
         binary_name = os.path.join(work_dir, 'sanitycheckc')
         ofile = open(source_name, 'w')
@@ -239,8 +242,7 @@ class CCompiler():
             cmdlist = self.exe_wrapper + [binary_name]
         else:
             cmdlist = [binary_name]
-        mlog.debug('Running C test binary, cross is %s.' % str(self.is_cross))
-        mlog.debug('Command: ' + ' '.join(cmdlist))
+        mlog.debug('Running test binary command: ' + ' '.join(cmdlist))
         pe = subprocess.Popen(cmdlist)
         pe.wait()
         if pe.returncode != 0:

interpreter.py

@@ -1315,6 +1315,7 @@ class Interpreter():
                 comp.sanity_check(self.environment.get_scratch_dir())
                 self.coredata.compilers[lang] = comp
                 if cross_comp is not None:
+                    cross_comp.sanity_check(self.environment.get_scratch_dir())
                     self.coredata.cross_compilers[lang] = cross_comp
             mlog.log('Native %s compiler: ' % lang, mlog.bold(' '.join(comp.get_exelist())), ' (%s %s)' % (comp.id, comp.version), sep='')
             if not comp.get_language() in self.coredata.external_args:

meson.py

@@ -15,6 +15,7 @@
 # limitations under the License.
 
 import sys, stat, traceback, pickle, argparse
+import datetime
 import os.path
 import environment, interpreter, mesonlib
 import build
@@ -116,6 +117,7 @@ itself as required.'''
     def generate(self):
         env = environment.Environment(self.source_dir, self.build_dir, self.meson_script_file, self.options)
         mlog.initialize(env.get_log_dir())
+        mlog.debug('Build started at', datetime.datetime.now().isoformat())
         mlog.log(mlog.bold('The Meson build system'))
         mlog.log('Version:', coredata.version)
         mlog.log('Source dir:', mlog.bold(self.source_dir))