udo bash -ex build.sh failed

i used ubuntu18.04 and here is the part of the logs :

error: downloading 'https://netcologne.dl.sourceforge.net/project/lzmautils/xz-5.2.3.tar.gz' failed
status_code: 1
status_string: "Unsupported protocol"
log:
--- LOG BEGIN ---
Protocol "https" not supported or disabled in libcurl

i use "wget https://netcologne.dl.sourceforge.net/project/lzmautils/xz-5.2.3.tar.gz
--no-check-certificate" is well and how I modify in the code of the program (to add "--no-check-certificate")!
thanks a lot