modules: add LIBCOMCXXFLAGS to C++ modules using LIBCOM

Even though they don't use WRL or IID_PPV_ARGS yet.

Better safe than sorry.

modules/access/Makefile.am

@@ -312,6 +312,7 @@ if HAVE_WIN32_DESKTOP
 # Work-around automake bug:
 # Use an import library for C++ to retain C linker on other platforms.
 libbda_la_SOURCES = access/dtv/bdadefs.h access/dtv/bdagraph.cpp access/dtv/bdagraph.hpp
+libbda_la_CXXFLAGS = $(AM_CXXFLAGS) $(LIBCOMCXXFLAGS)
 libbda_la_LDFLAGS = -static
 libbda_la_LIBADD = -lstrmiids $(LIBCOM) -luuid
 noinst_LTLIBRARIES += libbda.la

modules/text_renderer/Makefile.am

@@ -75,6 +75,7 @@ endif
 # SAPI TTS (win32)
 libsapi_plugin_la_SOURCES = text_renderer/sapi.cpp
 libsapi_plugin_la_LIBADD = $(LIBCOM)
+libsapi_plugin_la_CXXFLAGS = $(AM_CXXFLAGS) $(LIBCOMCXXFLAGS)
 if HAVE_SAPI
 text_LTLIBRARIES += libsapi_plugin.la
 endif