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openwrt-xburst/include/prereq.mk
nbd b26d576fd7 some minor fixes, cleanups, package build abstraction
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9051 3c298f89-4303-0410-b956-a3cf2f4a3e73
2007-09-28 01:23:56 +00:00

63 lines
1.1 KiB
Makefile

#
# Copyright (C) 2006-2007 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
ifneq ($(__prereq_inc),1)
__prereq_inc:=1
prereq:
if [ -f $(TMP_DIR)/.prereq-error ]; then \
echo; \
cat $(TMP_DIR)/.prereq-error; \
rm -f $(TMP_DIR)/.prereq-error; \
echo; \
false; \
fi
.SILENT: prereq
endif
define Require
export PREREQ_CHECK=1
ifeq ($$(CHECK_$(1)),)
prereq: prereq-$(1)
prereq-$(1): FORCE
echo -n "Checking '$(1)'... "
if $(NO_TRACE_MAKE) -f $(firstword $(MAKEFILE_LIST)) check-$(1) >/dev/null 2>/dev/null; then \
echo 'ok.'; \
else \
echo 'failed.'; \
echo -e "$(PKG_NAME): $(strip $(2))" | perl -ne 's/\\\s*/\n/g,print' >> $(TMP_DIR)/.prereq-error; \
fi
check-$(1): FORCE
$(call Require/$(1))
CHECK_$(1):=1
.SILENT: prereq-$(1) check-$(1)
endif
endef
define RequireCommand
define Require/$(1)
which $(1)
endef
$$(eval $$(call Require,$(1),$(2)))
endef
define RequireHeader
define Require/$(1)
[ -e "$(1)" ]
endef
$$(eval $$(call Require,$(1),$(2)))
endef
.NOTPARALLEL: