diff -ru libgpg-error.orig/src/Makefile.in libgpg-error/src/Makefile.in
--- libgpg-error.orig/src/Makefile.in	2017-09-12 08:18:29.376536700 +0200
+++ libgpg-error/src/Makefile.in	2017-09-12 08:57:11.648083800 +0200
@@ -512,8 +512,7 @@
 @HAVE_W32_SYSTEM_TRUE@arch_sources = w32-gettext.c w32-lock.c w32-lock-obj.h w32-thread.c \
 @HAVE_W32_SYSTEM_TRUE@	       w32-iconv.c w32-estream.c
 
-@HAVE_W32_SYSTEM_TRUE@RCCOMPILE = $(RC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
-@HAVE_W32_SYSTEM_TRUE@            -DLOCALEDIR=\"$(localedir)\" $(AM_CPPFLAGS) $(CPPFLAGS)
+@HAVE_W32_SYSTEM_TRUE@RCCOMPILE = $(RC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) -DLOCALEDIR=$(localedir) $(AM_CPPFLAGS)
 
 @HAVE_W32_SYSTEM_TRUE@LTRCCOMPILE = $(LIBTOOL) --mode=compile --tag=RC $(RCCOMPILE)
 @HAVE_W32_SYSTEM_TRUE@SUFFIXES = .rc .lo
@@ -1242,7 +1241,7 @@
 
 
 @HAVE_W32_SYSTEM_TRUE@.rc.lo:
-@HAVE_W32_SYSTEM_TRUE@	$(LTRCCOMPILE) -i "$<" -o "$@"
+@HAVE_W32_SYSTEM_TRUE@	$(LTRCCOMPILE) -i $< -o $@
 
 @HAVE_W32_SYSTEM_TRUE@versioninfo.lo : gpg-error.w32-manifest
 
@@ -1283,7 +1282,7 @@
 # It is correct to use $(CPP).  We want the host's idea of the error codes.
 mkerrcodes.h: Makefile mkerrcodes.awk $(gpg_extra_headers)
 	$(AWK) -f $(srcdir)/mkerrcodes1.awk $(srcdir)/errnos.in >_$@
-	$(CPP) $(CPPFLAGS) $(extra_cppflags) -P _$@ | grep GPG_ERR_ | \
+	$(CPP) $(CPPFLAGS) $(extra_cppflags) _$@ | grep GPG_ERR_ | \
                $(AWK) -f $(srcdir)/mkerrcodes.awk >$@
 	-rm _$@
 
