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Diffstat (limited to 'mk/Autoconf.mk')
| -rw-r--r-- | mk/Autoconf.mk | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/mk/Autoconf.mk b/mk/Autoconf.mk new file mode 100644 index 0000000..4d25d21 --- /dev/null +++ b/mk/Autoconf.mk @@ -0,0 +1,138 @@ +# +# 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 |