giscanner/ccompiler.py: Fix macro defines with quotes on MSVCgnome-3-34

When we save the macros to pass to distutils to compile the dumper
program, the quotes were not properly preserved for Visual Studio
builds, causing items such as -DG_LOG_DOMAIN to fail as quotes are used
in there.

When we use quotes in macro definitions, we escape the escape
character in ccompiler._set_cpp_options() when we are running
g-ir-scanner with Visual Studio, so that distutils won't be too eager
to drop those prematurely.

1 files changed, 7 insertions, 0 deletions

diff --git a/giscanner/ccompiler.py b/giscanner/ccompiler.py
index 35549da2..4ad572c3 100644
--- a/giscanner/ccompiler.py
+++ b/giscanner/ccompiler.py
@@ -444,6 +444,13 @@ class CCompiler(object):
                 else:
                     macro_name = macro[:macro_index]
                     macro_value = macro[macro_index + 1:]
+
+                    # Somehow the quotes used in defining
+                    # macros for compiling using distutils
+                    # get dropped for MSVC builds, so
+                    # escape the escape character.
+                    if isinstance(self.compiler, MSVCCompiler):
+                        macro_value = macro_value.replace('\"', '\\\"')
                 macros.append((macro_name, macro_value))
             elif option.startswith('-U'):
                 macros.append((option[len('-U'):],))