sync whiterussian sdk with kamikaze
[openwrt/svn-archive/archive.git] / openwrt / package / sdk / files / include / prereq.mk
1 #
2 # Copyright (C) 2006 OpenWrt.org
3 #
4 # This is free software, licensed under the GNU General Public License v2.
5 # See /LICENSE for more information.
6 #
7
8 $(TMP_DIR):
9 mkdir -p $@
10
11 prereq:
12 if [ -f $(TMP_DIR)/.prereq-error ]; then \
13 echo; \
14 cat $(TMP_DIR)/.prereq-error; \
15 echo; \
16 rm -rf $(TMP_DIR); \
17 false; \
18 fi
19 rm -rf $(TMP_DIR)
20 mkdir -p $(TMP_DIR)
21
22 .SILENT: $(TMP_DIR) prereq
23
24 define Require
25 export PREREQ_CHECK=1
26 ifeq ($$(CHECK_$(1)),)
27 prereq: prereq-$(1)
28
29 prereq-$(1): $(TMP_DIR) FORCE
30 echo -n "Checking '$(1)'... "
31 if $(NO_TRACE_MAKE) -f $(firstword $(MAKEFILE_LIST)) check-$(1) >/dev/null 2>/dev/null; then \
32 echo 'ok.'; \
33 else \
34 echo 'failed.'; \
35 echo -e "$(strip $(2))" >> $(TMP_DIR)/.prereq-error; \
36 fi
37
38 check-$(1): FORCE
39 $(call Require/$(1))
40 CHECK_$(1):=1
41
42 .SILENT: prereq-$(1) check-$(1)
43 endif
44 endef
45
46
47 define RequireCommand
48 define Require/$(1)
49 which $(1)
50 endef
51
52 $$(eval $$(call Require,$(1),$(2)))
53 endef
54