Initial revision

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diff --git a/mk/Autoconf.mk b/mk/Autoconf.mk
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+#
+# simple autoconf system for GNU make
+#
+# (c) 2002-2004 Gerd Knorr <kraxel@bytesex.org>
+#
+# credits for creating this one go to the autotools people because
+# they managed it to annoy lots of developers and users (including
+# me) with version incompatibilities.
+#
+# This file is public domain.  No warranty.  If it breaks you keep
+# both pieces.
+#
+########################################################################
+
+# verbose yes/no
+verbose		?= no
+
+# some stuff used by the tests
+ifneq ($(verbose),no)
+  # verbose (for debug)
+  ac_init	= echo "checking $(1) ... " >&2; rc=no
+  ac_b_cmd	= echo "run: $(1)" >&2; $(1) >/dev/null && rc=yes
+  ac_s_cmd	= echo "run: $(1)" >&2; rc=`$(1)`
+  ac_fini	= echo "... result is $${rc}" >&2; echo >&2; echo "$${rc}"
+else
+  # normal
+  ac_init	= echo -n "checking $(1) ... " >&2; rc=no
+  ac_b_cmd	= $(1) >/dev/null 2>&1 && rc=yes
+  ac_s_cmd	= rc=`$(1) 2>/dev/null`
+  ac_fini	= echo "$${rc}" >&2; echo "$${rc}"
+endif
+
+# some helpers to build cflags and related variables
+ac_def_cflags_1 = $(if $(filter yes,$($(1))),-D$(1))
+ac_lib_cflags	= $(foreach lib,$(1),$(call ac_def_cflags_1,HAVE_LIB$(lib)))
+ac_inc_cflags	= $(foreach inc,$(1),$(call ac_def_cflags_1,HAVE_$(inc)))
+ac_lib_mkvar_1	= $(if $(filter yes,$(HAVE_LIB$(1))),$($(1)_$(2)))
+ac_lib_mkvar	= $(foreach lib,$(1),$(call ac_lib_mkvar_1,$(lib),$(2)))
+
+
+########################################################################
+# the tests ...
+
+# get uname
+ac_uname = $(shell \
+	$(call ac_init,for system);\
+	$(call ac_s_cmd,uname -s | tr 'A-Z' 'a-z');\
+	$(call ac_fini))
+
+# check for some header file
+# args: header file
+ac_header = $(shell \
+	$(call ac_init,for $(1));\
+	$(call ac_b_cmd,echo '\#include <$(1)>' |\
+		$(CC) $(CFLAGS) -E -);\
+	$(call ac_fini))
+
+# check for some function
+# args: function [, additional libs ]
+ac_func = $(shell \
+	$(call ac_init,for $(1));\
+	echo 'void $(1)(void); int main(void) {$(1)();return 0;}' \
+		> __actest.c;\
+	$(call ac_b_cmd,$(CC) $(CFLAGS) $(LDFLAGS) -o \
+		__actest __actest.c $(2));\
+	rm -f __actest __actest.c;\
+	$(call ac_fini))
+
+# check for some library
+# args: function, library [, additional libs ]
+ac_lib = $(shell \
+	$(call ac_init,for $(1) in $(2));\
+	echo 'void $(1)(void); int main(void) {$(1)();return 0;}' \
+		> __actest.c;\
+	$(call ac_b_cmd,$(CC) $(CFLAGS) $(LDFLAGS) -o \
+		__actest __actest.c -l$(2) $(3));\
+	rm -f __actest __actest.c;\
+	$(call ac_fini))
+
+# check if some compiler flag works
+# args: compiler flag
+ac_cflag = $(shell \
+	$(call ac_init,if $(CC) supports $(1));\
+	echo 'int main() {return 0;}' > __actest.c;\
+	$(call ac_b_cmd,$(CC) $(CFLAGS) $(1) $(LDFLAGS) -o \
+		__actest __actest.c);\
+	rm -f __actest __actest.c;\
+	$(call ac_fini))
+
+# check for some binary
+# args: binary name
+ac_binary = $(shell \
+	$(call ac_init,for $(1));\
+	$(call ac_s_cmd,which $(1));\
+	bin="$$rc";rc="no";\
+	$(call ac_b_cmd,test -x "$$$$bin");\
+	$(call ac_fini))
+
+# check if lib64 is used
+ac_lib64 = $(shell \
+	$(call ac_init,for libdir name);\
+	$(call ac_s_cmd,$(CC) -print-search-dirs | grep -q lib64 &&\
+		echo "lib64" || echo "lib");\
+	$(call ac_fini))
+
+# check for x11 ressource dir prefix
+ac_resdir = $(shell \
+	$(call ac_init,for X11 app-defaults prefix);\
+	$(call ac_s_cmd, test -d /etc/X11/app-defaults &&\
+		echo "/etc/X11" || echo "/usr/X11R6/lib/X11");\
+	$(call ac_fini))
+
+
+########################################################################
+# build Make.config
+
+define newline
+
+
+endef
+make-config-q	= $(subst $(newline),\n,$(make-config))
+
+ifeq ($(filter config,$(MAKECMDGOALS)),config)
+.PHONY: Make.config
+  LIB := $(call ac_lib64)
+else
+  LIB ?= $(call ac_lib64)
+  LIB := $(LIB)
+endif
+.PHONY: config
+config: Make.config
+	@true
+
+Make.config: $(srcdir)/GNUmakefile
+	@echo -e "$(make-config-q)" > $@
+	@echo
+	@echo "Make.config written, edit if needed"
+	@echo