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authorFelix Fietkau <nbd@openwrt.org>2006-10-13 22:51:49 +0200
committerFelix Fietkau <nbd@openwrt.org>2016-03-20 17:29:15 +0100
commit60c1f0f64d23003a19a07d6b9638542130f6641d (patch)
tree8fb2787f4c49baded97cd55e0c371fe1cffce2b6 /include/prereq.mk
parentd58a09110ccfa95f06c983fe796806f2e035c9d2 (diff)
parentb3ce218b51746d3a576221ea542facf3a1703ab2 (diff)
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finally move buildroot-ng to trunk
Diffstat (limited to 'include/prereq.mk')
-rw-r--r--include/prereq.mk54
1 files changed, 54 insertions, 0 deletions
diff --git a/include/prereq.mk b/include/prereq.mk
new file mode 100644
index 0000000..eda7ca3
--- /dev/null
+++ b/include/prereq.mk
@@ -0,0 +1,54 @@
+#
+# Copyright (C) 2006 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+$(TMP_DIR):
+ mkdir -p $@
+
+prereq:
+ if [ -f $(TMP_DIR)/.prereq-error ]; then \
+ echo; \
+ 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
+ export PREREQ_CHECK=1
+ ifeq ($$(CHECK_$(1)),)
+ prereq: prereq-$(1)
+
+ prereq-$(1): $(TMP_DIR) FORCE
+ echo -n "Checking '$(1)'... "
+ if $(NO_TRACE_MAKE) -f $(firstword $(MAKEFILE_LIST)) check-$(1) >/dev/null 2>/dev/null; then \
+ echo 'ok.'; \
+ else \
+ echo 'failed.'; \
+ echo -e "$(strip $(2))" >> $(TMP_DIR)/.prereq-error; \
+ fi
+
+ check-$(1): FORCE
+ $(call Require/$(1))
+ CHECK_$(1):=1
+
+ .SILENT: prereq-$(1) check-$(1)
+ endif
+endef
+
+
+define RequireCommand
+ define Require/$(1)
+ which $(1)
+ endef
+
+ $$(eval $$(call Require,$(1),$(2)))
+endef
+