--- gcc-6.1.0/libjava/Makefile.am
+++ gcc-6.1.0/libjava/Makefile.am
@@ -488,10 +488,14 @@
 nat_files = $(nat_source_files:.cc=.lo)
 xlib_nat_files = $(xlib_nat_source_files:.cc=.lo)
 
+libgcj_la_CPPFLAGS = \
+        $(AM_CPPFLAGS) \
+        $(LIBSTDCXX_RAW_CXX_CXXFLAGS)
+
 # Include THREADLIBS here to ensure that the correct version of
 # certain linuxthread functions get linked:
 ## The mysterious backslash in the grep pattern is consumed by make.
-libgcj_la_LDFLAGS = -rpath $(toolexeclibdir) $(THREADLDFLAGS) $(extra_ldflags) $(THREADLIBS) \
+libgcj_la_LDFLAGS = $(LIBSTDCXX_RAW_CXX_LDFLAGS) -rpath $(toolexeclibdir) $(THREADLDFLAGS) $(extra_ldflags) $(THREADLIBS) \
 	$(LIBLTDL) $(SYS_ZLIBS) $(LIBJAVA_LDFLAGS_NOUNDEF) \
 	-version-info `grep -v '^\#' $(srcdir)/libtool-version` \
 	$(LIBGCJ_LD_SYMBOLIC_FUNCTIONS) $(LIBGCJ_LD_EXPORT_ALL)
--- gcc-6.1.0/libjava/Makefile.in
+++ gcc-6.1.0/libjava/Makefile.in
@@ -1103,9 +1103,13 @@
 nat_files = $(nat_source_files:.cc=.lo)
 xlib_nat_files = $(xlib_nat_source_files:.cc=.lo)
 
+libgcj_la_CPPFLAGS = \
+	$(AM_CPPFLAGS) \
+        $(LIBSTDCXX_RAW_CXX_CXXFLAGS)
+
 # Include THREADLIBS here to ensure that the correct version of
 # certain linuxthread functions get linked:
-libgcj_la_LDFLAGS = -rpath $(toolexeclibdir) $(THREADLDFLAGS) $(extra_ldflags) $(THREADLIBS) \
+libgcj_la_LDFLAGS = $(LIBSTDCXX_RAW_CXX_LDFLAGS) -rpath $(toolexeclibdir) $(THREADLDFLAGS) $(extra_ldflags) $(THREADLIBS) \
 	$(LIBLTDL) $(SYS_ZLIBS) $(LIBJAVA_LDFLAGS_NOUNDEF) \
 	-version-info `grep -v '^\#' $(srcdir)/libtool-version` \
 	$(LIBGCJ_LD_SYMBOLIC_FUNCTIONS) $(LIBGCJ_LD_EXPORT_ALL)