X-Git-Url: http://g0dil.de/git?a=blobdiff_plain;f=site_scons%2Fsite_tools%2FCustomTests.py;h=e482f800fd033fb639ec5b49506fa31c4b01d1d2;hb=14f43d9587103f6a78e51628785f93f1c14f99a0;hp=81a8eba4c7d5aa4badf6165888c20cad406d5905;hpb=41ac85f6c8a96bdefebdbee4e88193d7f23f50cf;p=senf.git

diff --git a/site_scons/site_tools/CustomTests.py b/site_scons/site_tools/CustomTests.py
index 81a8eba..e482f80 100644
--- a/site_scons/site_tools/CustomTests.py
+++ b/site_scons/site_tools/CustomTests.py
@@ -1,5 +1,5 @@
-import SCons.Environment
-import SCons.Util, SCons.Script
+import SCons.Environment, SCons.Util, SCons.Script, SCons.Conftest
+import re
 
 # Fix for SCons 0.97 compatibility
 import SCons.SConf
@@ -35,7 +35,7 @@ the decorator. This usage is primarily interesting for tool writers:
     from CustomTests import ConfTest
 
     MY_TESTS = {}
-    
+
     @ConfTest(MY_TESTS)
     def CheckMyFoo(context):
         pass
@@ -73,7 +73,7 @@ This usage is interesting for SConstruct and SConscript writers:
 
     env = Environment()
     env.Tool('CustomTests')
-    
+
     @env.ConfTest()
     def CheckMyFoo(context):
         pass
@@ -86,7 +86,7 @@ The new configuration test is automatically added to
 env['CUSTOM_TESTS'] and is thus automatically available to all
 configuration contexts created from the environment.
 """
-    
+
     def __init__(self, registry=None):
         if registry is None:
             self.tests = {}
@@ -99,17 +99,63 @@ configuration contexts created from the environment.
         self.tests[func.__name__] = func
         return func
 
-DefaultTest = ConfTest()
-
 def Configure(self, *args, **kw):
     try: kw['custom_tests'].update(self['CUSTOM_TESTS'])
     except KeyError: kw['custom_tests'] = dict(self['CUSTOM_TESTS'])
     return self._CustomTests_orig_Configure(*args, **kw)
 
+def Fail(context, message, condition=True):
+    if condition:
+        SCons.Util.display("scons: *** %s" % message)
+        SCons.Script.Exit(1)
+
+DefaultTest = ConfTest()
+
+@DefaultTest
+def CheckSymbolWithExpression(context, symbol, expression, header="", language="C"):
+    lang, suffix, msg = SCons.Conftest._lang2suffix(language)
+    if msg:
+        context.Message("Cannot check for %s: " % symbol)
+        context.Result(msg)
+        return False
+
+    text = ("#include <assert.h>\n"
+            "%s\n"
+            "int main() {\n"
+            "%s;\n"
+            "return 0;\n"
+            "}\n") % (header, expression)
+
+    context.Message("Checking for %s... " % symbol)
+    ret = context.TryLink(text, suffix)
+    context.Result(ret)
+    if ret:
+        key = symbol.upper()
+        key = re.sub('[^A-Z0-9_]', '_', key)
+        context.sconf.Define("HAVE_%s" % key, 1,
+                             "Define to 1 if you have `%s'" % symbol)
+
+    return ret
+
 @DefaultTest
-def Fail(context, msg):
-    SCons.Util.display("scons: *** %s" % msg)
-    SCons.Script.Exit(1)
+def CheckByteorder(context):
+    context.Message("Checking byteorder... ")
+    ret = context.TryRun('#include <stdio.h>\n'
+                         'union byteorder_test { int i; char b; };\n'
+                         'int main() {\n'
+                         '    union byteorder_test t; t.i=1;\n'
+                         '    printf(t.b ? "little\\n" : "big\\n");\n'
+                         '    return 0;\n'
+                         '}\n',
+                         ".c")[-1].strip()
+    if not ret:
+        context.Result("failed")
+        return False
+    else:
+        context.Result(ret+"-endian")
+        context.sconf.Define("BYTEORDER_%s_ENDIAN" % ret.upper(), 1,
+                             "Define BYTEORDER_LITTLE_ENDIAN or BYTEORDER_BIG_ENDIAN")
+        return ret
 
 def generate(env):
     env.Append( CUSTOM_TESTS = DefaultTest.tests )