Fix SBDebugger.GetOutputFileHandle() on OS X.

The swig typemaps had some magic for output File *'s on OS X that made:

SBDebugger.GetOutputFileHandle() 

actually work.  That was protected by a "#ifdef __MACOSX__", but the corresponding define
got lost going from the Darwin shell scripts to the python scripts for running
swig, so the code was elided.  I need to pass the define to SWIG, but only when
targetting Darwin.

So I added a target-platform argument to prepare_bindings, and if that 
is Darwin, I pass -D__APPLE__ to swig, and that activates this code again, and
GetOutputFileHandle works again.  Note, I only pass that argument for the Xcode
build.  I'm sure it is possible to do that for cmake, but my cmake-foo is weak.

I should have been able to write a test for this by creating a debugger, setting the 
output file handle to something file, writing to it, getting the output file handle 
and reading it.  But SetOutputFileHandle doesn't seem to work from Python, so I'd 
have to write a pexpect test to test this, which I'd rather not do.

llvm-svn: 263183

2 files changed, 4 insertions, 2 deletions

diff --git a/lldb/scripts/Python/prepare_binding_Python.py b/lldb/scripts/Python/prepare_binding_Python.py
index 1996841baf1..28fc3e5bc7f 100644
--- a/lldb/scripts/Python/prepare_binding_Python.py
+++ b/lldb/scripts/Python/prepare_binding_Python.py
@@ -16,7 +16,7 @@ import re
 import shutil
 import subprocess
 import sys
-
+import platform
 
 class SwigSettings(object):
     """Provides a single object to represent swig files and settings."""
@@ -205,6 +205,8 @@ def do_swig_rebuild(options, dependency_file, config_build_dir, settings):
         "-I\"%s\"" % os.path.normcase("./."),
         "-D__STDC_LIMIT_MACROS",
         "-D__STDC_CONSTANT_MACROS"]
+    if options.target_platform == "Darwin":
+        command.append("-D__APPLE__")
     if options.generate_dependency_file:
         command.append("-MMD -MF \"%s\"" % temp_dep_file_path)
     command.extend([
diff --git a/lldb/scripts/Python/python-typemaps.swig b/lldb/scripts/Python/python-typemaps.swig
index 82e33e1bc60..1b2afc2c7a6 100644
--- a/lldb/scripts/Python/python-typemaps.swig
+++ b/lldb/scripts/Python/python-typemaps.swig
@@ -534,7 +534,7 @@
 
 %typemap(out) FILE * {
    char mode[4] = {0};
-#ifdef __MACOSX__
+#ifdef __APPLE__
    int i = 0;
    short flags = $1->_flags;