Index: libcfa/prelude/Makefile.am
===================================================================
--- libcfa/prelude/Makefile.am	(revision f1b667186cc9c53fcf26d8e55e9d328e504edc58)
+++ libcfa/prelude/Makefile.am	(revision 44aad8f4ae26b1fe3eef138bd44cc12610ad6e9a)
@@ -21,5 +21,5 @@
 # put into lib for now
 cfalibdir = ${CFA_LIBDIR}
-cfalib_DATA = gcc-builtins.cf builtins.cf extras.cf prelude.cfa bootloader.c
+cfalib_DATA = gcc-builtins.cf builtins.cf extras.cf prelude.cfa bootloader.c defines.hfa
 
 CC = @LOCAL_CFACC@
Index: libcfa/prelude/Makefile.in
===================================================================
--- libcfa/prelude/Makefile.in	(revision f1b667186cc9c53fcf26d8e55e9d328e504edc58)
+++ libcfa/prelude/Makefile.in	(revision 44aad8f4ae26b1fe3eef138bd44cc12610ad6e9a)
@@ -104,4 +104,5 @@
 DIST_COMMON = $(srcdir)/Makefile.am $(am__DIST_COMMON)
 mkinstalldirs = $(install_sh) -d
+CONFIG_HEADER = defines.hfa
 CONFIG_CLEAN_FILES =
 CONFIG_CLEAN_VPATH_FILES =
@@ -154,6 +155,25 @@
 am__installdirs = "$(DESTDIR)$(cfalibdir)"
 DATA = $(cfalib_DATA)
-am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) $(LISP)
-am__DIST_COMMON = $(srcdir)/Makefile.in
+am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) \
+	$(LISP)defines.hfa.in
+# Read a list of newline-separated strings from the standard input,
+# and print each of them once, without duplicates.  Input order is
+# *not* preserved.
+am__uniquify_input = $(AWK) '\
+  BEGIN { nonempty = 0; } \
+  { items[$$0] = 1; nonempty = 1; } \
+  END { if (nonempty) { for (i in items) print i; }; } \
+'
+# Make sure the list of sources is unique.  This is necessary because,
+# e.g., the same source file might be shared among _SOURCES variables
+# for different programs/libraries.
+am__define_uniq_tagged_files = \
+  list='$(am__tagged_files)'; \
+  unique=`for i in $$list; do \
+    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+  done | $(am__uniquify_input)`
+ETAGS = etags
+CTAGS = ctags
+am__DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/defines.hfa.in
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 ACLOCAL = @ACLOCAL@
@@ -306,10 +326,11 @@
 # put into lib for now
 cfalibdir = ${CFA_LIBDIR}
-cfalib_DATA = gcc-builtins.cf builtins.cf extras.cf prelude.cfa bootloader.c
+cfalib_DATA = gcc-builtins.cf builtins.cf extras.cf prelude.cfa bootloader.c defines.hfa
 AM_CFLAGS = -g -Wall -Wno-unused-function -fPIC @ARCH_FLAGS@ @CONFIG_CFLAGS@
 AM_CFAFLAGS = @CONFIG_CFAFLAGS@
 MOSTLYCLEANFILES = bootloader.c builtins.cf extras.cf gcc-builtins.c gcc-builtins.cf prelude.cfa
 MAINTAINERCLEANFILES = ${addprefix ${libdir}/,${cfalib_DATA}} ${addprefix ${libdir}/,${lib_LIBRARIES}}
-all: all-am
+all: defines.hfa
+	$(MAKE) $(AM_MAKEFLAGS) all-am
 
 .SUFFIXES:
@@ -344,4 +365,19 @@
 $(am__aclocal_m4_deps):
 
+defines.hfa: stamp-h1
+	@test -f $@ || rm -f stamp-h1
+	@test -f $@ || $(MAKE) $(AM_MAKEFLAGS) stamp-h1
+
+stamp-h1: $(srcdir)/defines.hfa.in $(top_builddir)/config.status
+	@rm -f stamp-h1
+	cd $(top_builddir) && $(SHELL) ./config.status prelude/defines.hfa
+$(srcdir)/defines.hfa.in:  $(am__configure_deps) 
+	($(am__cd) $(top_srcdir) && $(AUTOHEADER))
+	rm -f stamp-h1
+	touch $@
+
+distclean-hdr:
+	-rm -f defines.hfa stamp-h1
+
 mostlyclean-libtool:
 	-rm -f *.lo
@@ -370,10 +406,56 @@
 	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
 	dir='$(DESTDIR)$(cfalibdir)'; $(am__uninstall_files_from_dir)
-tags TAGS:
-
-ctags CTAGS:
-
-cscope cscopelist:
-
+
+ID: $(am__tagged_files)
+	$(am__define_uniq_tagged_files); mkid -fID $$unique
+tags: tags-am
+TAGS: tags
+
+tags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	set x; \
+	here=`pwd`; \
+	$(am__define_uniq_tagged_files); \
+	shift; \
+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  if test $$# -gt 0; then \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      "$$@" $$unique; \
+	  else \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
+ctags: ctags-am
+
+CTAGS: ctags
+ctags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	$(am__define_uniq_tagged_files); \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+cscopelist: cscopelist-am
+
+cscopelist-am: $(am__tagged_files)
+	list='$(am__tagged_files)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
 
 distdir: $(DISTFILES)
@@ -409,5 +491,5 @@
 check-am: all-am
 check: check-am
-all-am: Makefile $(DATA)
+all-am: Makefile $(DATA) defines.hfa
 installdirs:
 	for dir in "$(DESTDIR)$(cfalibdir)"; do \
@@ -452,5 +534,5 @@
 distclean: distclean-am
 	-rm -f Makefile
-distclean-am: clean-am distclean-generic
+distclean-am: clean-am distclean-generic distclean-hdr distclean-tags
 
 dvi: dvi-am
@@ -513,9 +595,10 @@
 uninstall-am: uninstall-cfalibDATA
 
-.MAKE: install-am install-strip
-
-.PHONY: all all-am check check-am clean clean-generic clean-libtool \
-	cscopelist-am ctags-am distclean distclean-generic \
-	distclean-libtool distdir dvi dvi-am html html-am info info-am \
+.MAKE: all install-am install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am check check-am clean clean-generic \
+	clean-libtool cscopelist-am ctags ctags-am distclean \
+	distclean-generic distclean-hdr distclean-libtool \
+	distclean-tags distdir dvi dvi-am html html-am info info-am \
 	install install-am install-cfalibDATA install-data \
 	install-data-am install-dvi install-dvi-am install-exec \
@@ -526,5 +609,5 @@
 	maintainer-clean-generic maintainer-clean-local mostlyclean \
 	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
-	tags-am uninstall uninstall-am uninstall-cfalibDATA
+	tags tags-am uninstall uninstall-am uninstall-cfalibDATA
 
 .PRECIOUS: Makefile
Index: libcfa/prelude/defines.hfa.in
===================================================================
--- libcfa/prelude/defines.hfa.in	(revision 44aad8f4ae26b1fe3eef138bd44cc12610ad6e9a)
+++ libcfa/prelude/defines.hfa.in	(revision 44aad8f4ae26b1fe3eef138bd44cc12610ad6e9a)
@@ -0,0 +1,2 @@
+
+#undef HAVE_LINUX_IO_URING_H