OpenWrt can only be built on a case-sensitive filesystem \
))
+define Require/getopt
+ getopt --help 2>&1 | grep long >/dev/null
+endef
+$(eval $(call Require,getopt, \
+ Please install GNU getopt \
+))
+
+define Require/fileutils
+ gcp --help || cp --help
+endef
+$(eval $(call Require,fileutils, \
+ Please install GNU fileutils \
+))
+
define Require/working-gcc
echo 'int main(int argc, char **argv) { return 0; }' | \
gcc -x c -o $(TMP_DIR)/a.out -