Fix 'scons -h'

[senf.git] / SConstruct

diff --git a/SConstruct b/SConstruct
index 873892b..c4b1431 100644 (file)
--- a/SConstruct
+++ b/SConstruct
@@ -33,10 +33,17 @@ fixlinks        Fix broken links in doxygen documentation
 all_valgrinds   Run all tests under valgrind/memcheck
 lcov            Generate test coverage output in doc/lcov and lcov.info
 
-You may execute targets on a remote host (if the directory layout is the same)
-by calling
+The following additional targets may be called within subdirectories, either
+using '$ scons -u <target>'  or '$ scons <directory>/<target>:
 
-    scons <target>@[<user>@]<host>
+test            Build and run unit test for this module
+doc             Build the documentation of this module
+valgrind        Run the unit test of this module under valgrind
+
+You may execute targets on a remote host via ssh (if the directory layout is the
+same) by calling
+
+    $ scons <target>@[<user>@]<host>
 
 Some more elaborate unit tests may be enabled by setting appropritate variables
 in the shell (unix) environment
@@ -219,7 +226,7 @@ env.PhonyTarget('prepare', [], [])
 
 #### valgrind
 env.Alias('all_valgrinds')
-if env['HAVE_VALGRIND']:
+if env.get('HAVE_VALGRIND'):
     for test in env.FindAllBoostUnitTests():
         stamp = env.Command(test[0].dir.File('.test-valgrind.stamp'),
                             [ test[0].dir.File('.test.bin'), 'tools/valgrind.sup' ],
@@ -275,3 +282,10 @@ for target in COMMAND_LINE_TARGETS:
             args.append('-u')
         env.PhonyTarget(target, [], [ "ssh $HOST scons $SCONSARGS -C $DIR $RTARGET" ],
                         HOST=host, RTARGET=realtarget, DIR=cwd, SCONSARGS=args)
+
+env.PhonyTarget('clean', [], [
+        lambda **args: sys.stderr.write(
+            "=================================================================\n"
+            "'clean' is not a valid target. Instead, use\n"
+            "    $ scons -c all\n"
+            "=================================================================\n") ])