MAC: Make gem5 compile and run on MacOSX 10.7.2

Adaptations to make gem5 compile and run on OSX 10.7.2, with a stock
gcc 4.2.1 and the remaining dependencies from macports, i.e. python
2.7,.2 swig 2.0.4, mercurial 2.0. The changes include an adaptation of
the SConstruct to handle non-library linker flags, and Darwin-specific
code to find the memory usage of gem5. A number of Ruby files relied
on ambigious uint (without the 32 suffix) which caused compilation
errors.

1 files changed, 8 insertions, 4 deletions

diff --git a/SConstruct b/SConstruct
index 89761a4f1..0630cbd79 100755
--- a/SConstruct
+++ b/SConstruct
@@ -663,10 +663,14 @@ if not py_getvar('Py_ENABLE_SHARED'):
 
 py_libs = []
 for lib in py_getvar('LIBS').split() + py_getvar('SYSLIBS').split():
-    assert lib.startswith('-l')
-    lib = lib[2:]   
-    if lib not in py_libs:
-        py_libs.append(lib)
+    if not lib.startswith('-l'):
+        # Python requires some special flags to link (e.g. -framework
+        # common on OS X systems), assume appending preserves order
+        main.Append(LINKFLAGS=[lib])
+    else:
+        lib = lib[2:]
+        if lib not in py_libs:
+            py_libs.append(lib)
 py_libs.append(py_version)
 
 main.Append(CPPPATH=py_includes)