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-rw-r--r--include/prereq.mk118
1 files changed, 118 insertions, 0 deletions
diff --git a/include/prereq.mk b/include/prereq.mk
new file mode 100644
index 000000000..c51953b61
--- /dev/null
+++ b/include/prereq.mk
@@ -0,0 +1,118 @@
+#
+# Copyright (C) 2006 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/verbose.mk
+
+$(TMP_DIR):
+ mkdir -p $@
+
+prereq:
+ @echo
+ @if [ -f $(TMP_DIR)/.prereq-error ]; then \
+ cat $(TMP_DIR)/.prereq-error; \
+ echo; \
+ rm -rf $(TMP_DIR); \
+ false; \
+ fi
+ @rm -rf $(TMP_DIR)
+ @mkdir -p $(TMP_DIR)
+
+define Require
+ ifeq ($$(CHECK_$(1)),)
+ prereq: prereq-$(1)
+
+ prereq-$(1): $(TMP_DIR) FORCE
+ @echo -n "Checking '$(1)'... "
+ @if $(NO_TRACE_MAKE) -f $(INCLUDE_DIR)/prereq.mk check-$(1) >/dev/null 2>/dev/null; then \
+ echo 'ok.'; \
+ else \
+ echo 'failed.'; \
+ echo -e "$(strip $(2))" >> $(TMP_DIR)/.prereq-error; \
+ fi
+
+ check-$(1): FORCE
+ $(call Require/$(1))
+ CHECK_$(1):=1
+ endif
+endef
+
+
+define RequireCommand
+ define Require/$(1)
+ which $(1)
+ endef
+
+ $$(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
+ $(NO_TRACE_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 Require/working-gcc
+ echo 'int main(int argc, char **argv) { return 0; }' | \
+ gcc -x c -o $(TMP_DIR)/a.out -
+endef
+
+$(eval $(call Require,working-gcc, \
+ No working GNU C Compiler was found on your system. \
+))
+
+define Require/working-g++
+ echo 'int main(int argc, char **argv) { return 0; }' | \
+ g++ -x c++ -o $(TMP_DIR)/a.out -lstdc++ -
+endef
+
+$(eval $(call Require,working-g++, \
+ No working GNU C++ Compiler was found on your system. \
+))
+
+define Require/zlib
+ echo 'int main(int argc, char **argv) { gzdopen(0, "rb"); return 0; }' | \
+ gcc -x c -o $(TMP_DIR)/a.out -lz -
+endef
+
+$(eval $(call Require,zlib, \
+ The development version of zlib was not found on your system. \
+))
+
+
+$(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. \
+))
+
+