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#
# Copyright (C) 2006 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
$(TMP_DIR):
mkdir -p $@
prereq:
echo
if [ -f $(TMP_DIR)/.prereq-error ]; then \
cat $(TMP_DIR)/.prereq-error; \
echo; \
rm -rf $(TMP_DIR); \
false; \
fi
rm -rf $(TMP_DIR)
mkdir -p $(TMP_DIR)
.SILENT: $(TMP_DIR) prereq
define Require
ifeq ($$(CHECK_$(1)),)
prereq: prereq-$(1)
prereq-$(1): $(TMP_DIR) FORCE
echo -n "Checking '$(1)'... "
if $(NO_TRACE_MAKE) -f $(INCLUDE_DIR)/prereq.mk check-$(1) >/dev/null 2>/dev/null; then \
echo 'ok.'; \
else \
echo 'failed.'; \
echo -e "$(strip $(2))" >> $(TMP_DIR)/.prereq-error; \
fi
check-$(1): FORCE
$(call Require/$(1))
CHECK_$(1):=1
.SILENT: prereq-$(1) check-$(1)
endif
endef
define RequireCommand
define Require/$(1)
which $(1)
endef
$$(eval $$(call Require,$(1),$(2)))
endef
# Required for the toolchain
define Require/working-make
echo 'all: test' > $(TMP_DIR)/check.mk
echo 'e0 = $$$$(foreach s,foobar,$$$$(eval $$$$s:))' >> $(TMP_DIR)/check.mk
echo 'e1 = $$$$(foreach s,foobar, $$$$(eval $$$$s:))' >> $(TMP_DIR)/check.mk
echo 'test: $$$$(strip $$$$(e0)) $$$$(strip $$$$(e1))' >> $(TMP_DIR)/check.mk
$(NO_TRACE_MAKE) -f $(TMP_DIR)/check.mk
endef
$(eval $(call Require,working-make, \
Your make version is buggy. Please install GNU make v3.81 or later. \
))
define Require/working-gcc
echo 'int main(int argc, char **argv) { return 0; }' | \
gcc -x c -o $(TMP_DIR)/a.out -
endef
$(eval $(call Require,working-gcc, \
No working GNU C Compiler (gcc) was found on your system. \
))
define Require/working-g++
echo 'int main(int argc, char **argv) { return 0; }' | \
g++ -x c++ -o $(TMP_DIR)/a.out -lstdc++ -
endef
$(eval $(call Require,working-g++, \
No working GNU C++ Compiler (g++) was found on your system. \
))
define Require/zlib
echo 'int main(int argc, char **argv) { gzdopen(0, "rb"); return 0; }' | \
gcc -include zlib.h -x c -o $(TMP_DIR)/a.out -lz -
endef
$(eval $(call Require,zlib, \
No zlib development files were not found on your system. \
))
$(eval $(call RequireCommand,bison, \
Please install GNU bison. \
))
$(eval $(call RequireCommand,flex, \
Please install flex. \
))
$(eval $(call RequireCommand,python, \
Please install python. \
))
$(eval $(call RequireCommand,unzip, \
Please install unzip. \
))
$(eval $(call RequireCommand,bzip2, \
Please install bzip2. \
))
$(eval $(call RequireCommand,patch, \
Please install patch. \
))
$(eval $(call RequireCommand,perl, \
Please install perl. \
))
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