-#
-# Copyright (C) 2006 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
+# SPDX-License-Identifier: GPL-2.0-only
#
+# Copyright (C) 2006-2020 OpenWrt.org
+
+ifneq ($(__prereq_inc),1)
+__prereq_inc:=1
prereq:
if [ -f $(TMP_DIR)/.prereq-error ]; then \
fi
.SILENT: prereq
+endif
+
+PREREQ_PREV=
+# 1: display name
+# 2: error message
define Require
export PREREQ_CHECK=1
ifeq ($$(CHECK_$(1)),)
prereq: prereq-$(1)
- prereq-$(1): FORCE
- echo -n "Checking '$(1)'... "
+ prereq-$(1): $(if $(PREREQ_PREV),prereq-$(PREREQ_PREV)) FORCE
+ printf "Checking '$(1)'... "
if $(NO_TRACE_MAKE) -f $(firstword $(MAKEFILE_LIST)) check-$(1) >/dev/null 2>/dev/null; then \
echo 'ok.'; \
else \
echo 'failed.'; \
- echo -e "$(strip $(2))" | perl -ne 's/\\\s*/\n/g,print' >> $(TMP_DIR)/.prereq-error; \
+ echo "$(PKG_NAME): $(strip $(2))" >> $(TMP_DIR)/.prereq-error; \
fi
check-$(1): FORCE
CHECK_$(1):=1
.SILENT: prereq-$(1) check-$(1)
+ .NOTPARALLEL:
endif
+
+ PREREQ_PREV=$(1)
endef
define RequireCommand
define Require/$(1)
- which $(1)
+ command -v $(1)
endef
$$(eval $$(call Require,$(1),$(2)))
endef
+define RequireHeader
+ define Require/$(1)
+ [ -e "$(1)" ]
+ endef
+
+ $$(eval $$(call Require,$(1),$(2)))
+endef
+
+# 1: header to test
+# 2: failure message
+# 3: optional compile time test
+# 4: optional link library test (example -lncurses)
+define RequireCHeader
+ define Require/$(1)
+ echo 'int main(int argc, char **argv) { $(3); return 0; }' | gcc -include $(1) -x c -o $(TMP_DIR)/a.out - $(4)
+ endef
+
+ $$(eval $$(call Require,$(1),$(2)))
+endef
+
+define CleanupPython2
+ define Require/python2-cleanup
+ if [ -f "$(STAGING_DIR_HOST)/bin/python" ] && \
+ $(STAGING_DIR_HOST)/bin/python -V 2>&1 | \
+ grep -q 'Python 2'; then \
+ rm $(STAGING_DIR_HOST)/bin/python; \
+ fi
+ endef
+
+ $$(eval $$(call Require,python2-cleanup))
+endef
+
+define QuoteHostCommand
+'$(subst ','"'"',$(strip $(1)))'
+endef
+
+# 1: display name
+# 2: failure message
+# 3: test
+define TestHostCommand
+ define Require/$(1)
+ ($(3)) >/dev/null 2>/dev/null
+ endef
+
+ $$(eval $$(call Require,$(1),$(2)))
+endef
+
+# 1: canonical name
+# 2: failure message
+# 3+: candidates
+define SetupHostCommand
+ define Require/$(1)
+ [ -f "$(STAGING_DIR_HOST)/bin/$(strip $(1))" ] && exit 0; \
+ for cmd in $(call QuoteHostCommand,$(3)) $(call QuoteHostCommand,$(4)) \
+ $(call QuoteHostCommand,$(5)) $(call QuoteHostCommand,$(6)) \
+ $(call QuoteHostCommand,$(7)) $(call QuoteHostCommand,$(8)) \
+ $(call QuoteHostCommand,$(9)) $(call QuoteHostCommand,$(10)) \
+ $(call QuoteHostCommand,$(11)) $(call QuoteHostCommand,$(12)); do \
+ if [ -n "$$$$$$$$cmd" ]; then \
+ bin="$$$$$$$$(PATH="$(subst $(space),:,$(filter-out $(STAGING_DIR_HOST)/%,$(subst :,$(space),$(PATH))))" \
+ command -v "$$$$$$$${cmd%% *}")"; \
+ if [ -x "$$$$$$$$bin" ] && eval "$$$$$$$$cmd" >/dev/null 2>/dev/null; then \
+ mkdir -p "$(STAGING_DIR_HOST)/bin"; \
+ ln -sf "$$$$$$$$bin" "$(STAGING_DIR_HOST)/bin/$(strip $(1))"; \
+ exit 0; \
+ fi; \
+ fi; \
+ done; \
+ exit 1
+ endef
+
+ $$(eval $$(call Require,$(1),$(if $(2),$(2),Missing $(1) command)))
+endef