Makefile

# http://tmont.com/blargh/2014/1/uploading-to-s3-in-bash                                                                                      
# file=xxxx                                                                                                                                   
# bucket=xxxx                                                                                                                                 
# s3Key=xxxx                                                                                                                                  
# s3Secret=xxxx                                                                                                                               
resource=/${bucket}/${file}
contentType=binary/octet-stream
dateValue := $(shell date "+%a, %d %b %Y %H:%M:%S %z")
SHELL=bash # Enable echo -ne option                                                                                                           
signature:=$(shell echo -ne "PUT\n\n${contentType}\n${dateValue}\n${resource}" | openssl sha1 -hmac ${s3Secret} -binary | base64)
upload-update:
        curl -k -X PUT -T "${file}" \
          -H "Host: ${bucket}.s3.amazonaws.com" \
           -H "Date: ${dateValue}" \
           -H "Content-Type: ${contentType}" \
           -H "Authorization: AWS ${s3Key}:${signature}" \
           https://${bucket}.s3.amazonaws.com/${file}