-#
-# Copyright (C) 2006 OpenWrt.org
+#
+# Copyright (C) 2006-2015 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 $@
+ifneq ($(__prereq_inc),1)
+__prereq_inc:=1
prereq:
- echo
if [ -f $(TMP_DIR)/.prereq-error ]; then \
+ echo; \
cat $(TMP_DIR)/.prereq-error; \
+ rm -f $(TMP_DIR)/.prereq-error; \
echo; \
- rm -rf $(TMP_DIR); \
false; \
fi
- rm -rf $(TMP_DIR)
- mkdir -p $(TMP_DIR)
-.SILENT: $(TMP_DIR) prereq
+.SILENT: prereq
+endif
+PREREQ_PREV=
+
+# 1: display name
+# 2: error message
define Require
+ export PREREQ_CHECK=1
ifeq ($$(CHECK_$(1)),)
prereq: prereq-$(1)
- prereq-$(1): $(TMP_DIR) FORCE
- echo -n "Checking '$(1)'... "
- if $(MAKE) -f $(INCLUDE_DIR)/prereq.mk check-$(1) >/dev/null 2>/dev/null; then \
+ prereq-$(1): $(if $(PREREQ_PREV),prereq-$(PREREQ_PREV)) FORCE
+ printf "Checking '$(1)'... "
+ if $(NO_TRACE_MAKE) -f $(firstword $(MAKEFILE_LIST)) check-$(1) >/dev/null 2>/dev/null; then \
echo 'ok.'; \
else \
echo 'failed.'; \
- echo -e "$(strip $(2))" >> $(TMP_DIR)/.prereq-error; \
+ echo "$(PKG_NAME): $(strip $(2))" >> $(TMP_DIR)/.prereq-error; \
fi
check-$(1): FORCE
CHECK_$(1):=1
.SILENT: prereq-$(1) check-$(1)
+ .NOTPARALLEL:
endif
+
+ PREREQ_PREV=$(1)
endef
$$(eval $$(call Require,$(1),$(2)))
endef
-# Required for the toolchain
-define Require/working-make
- echo 'all: test' > $(TMP_DIR)/check.mk
- echo 'e0 = $$$$(foreach s,foobar,$$$$(eval $$$$s:))' >> $(TMP_DIR)/check.mk
- echo 'e1 = $$$$(foreach s,foobar, $$$$(eval $$$$s:))' >> $(TMP_DIR)/check.mk
- echo 'test: $$$$(strip $$$$(e0)) $$$$(strip $$$$(e1))' >> $(TMP_DIR)/check.mk
- $(MAKE) -f $(TMP_DIR)/check.mk
-endef
-
-$(eval $(call Require,working-make, \
- Your make version is buggy. Please install GNU make v3.81 or later. \
-))
+define RequireHeader
+ define Require/$(1)
+ [ -e "$(1)" ]
+ endef
-define Require/working-gcc
- echo 'int main(int argc, char **argv) { return 0; }' | \
- gcc -x c -o $(TMP_DIR)/a.out -
+ $$(eval $$(call Require,$(1),$(2)))
endef
-$(eval $(call Require,working-gcc, \
- No working GNU C Compiler (gcc) was found on your system. \
-))
-
-define Require/working-g++
- echo 'int main(int argc, char **argv) { return 0; }' | \
- g++ -x c++ -o $(TMP_DIR)/a.out -lstdc++ -
+define QuoteHostCommand
+'$(subst ','"'"',$(strip $(1)))'
endef
-$(eval $(call Require,working-g++, \
- No working GNU C++ Compiler (g++) was found on your system. \
-))
+# 1: display name
+# 2: failure message
+# 3: test
+define TestHostCommand
+ define Require/$(1)
+ ($(3)) >/dev/null 2>/dev/null
+ endef
-define Require/zlib
- echo 'int main(int argc, char **argv) { gzdopen(0, "rb"); return 0; }' | \
- gcc -include zlib.h -x c -o $(TMP_DIR)/a.out -lz -
+ $$(eval $$(call Require,$(1),$(2)))
endef
-$(eval $(call Require,zlib, \
- No zlib development files were not found on your system. \
-))
-
-
-$(eval $(call RequireCommand,bison, \
- Please install GNU bison. \
-))
-
-$(eval $(call RequireCommand,flex, \
- Please install flex. \
-))
-
-$(eval $(call RequireCommand,python, \
- Please install python. \
-))
-
-$(eval $(call RequireCommand,unzip, \
- Please install unzip. \
-))
-
-$(eval $(call RequireCommand,bzip2, \
- Please install bzip2. \
-))
-
-$(eval $(call RequireCommand,patch, \
- Please install patch. \
-))
+# 1: canonical name
+# 2: failure message
+# 3+: candidates
+define SetupHostCommand
+ define Require/$(1)
+ [ -f "$(STAGING_DIR_HOST)/bin/$(strip $(1))" ] && exit 0; \
+ for cmd in $(call QuoteHostCommand,$(3)) $(call QuoteHostCommand,$(4)) \
+ $(call QuoteHostCommand,$(5)) $(call QuoteHostCommand,$(6)) \
+ $(call QuoteHostCommand,$(7)) $(call QuoteHostCommand,$(8)) \
+ $(call QuoteHostCommand,$(9)); do \
+ if [ -n "$$$$$$$$cmd" ]; then \
+ bin="$$$$$$$$(PATH="$(subst $(space),:,$(filter-out $(STAGING_DIR_HOST)/%,$(subst :,$(space),$(PATH))))" \
+ which "$$$$$$$${cmd%% *}")"; \
+ if [ -x "$$$$$$$$bin" ] && eval "$$$$$$$$cmd" >/dev/null 2>/dev/null; then \
+ mkdir -p "$(STAGING_DIR_HOST)/bin"; \
+ ln -sf "$$$$$$$$bin" "$(STAGING_DIR_HOST)/bin/$(strip $(1))"; \
+ exit 0; \
+ fi; \
+ fi; \
+ done; \
+ exit 1
+ endef
-$(eval $(call RequireCommand,perl, \
- Please install perl. \
-))
+ $$(eval $$(call Require,$(1),$(if $(2),$(2),Missing $(1) command)))
+endef