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