<div dir="ltr">Hello all,<br><br>I used CMake's ExternalProject_Add to download and build boost in my project. The URL I used is '<a href="http://sourceforge.net/projects/boost/files/boost/1.55.0/boost_1_55_0.zip/download">http://sourceforge.net/projects/boost/files/boost/1.55.0/boost_1_55_0.zip/download</a>' and it works. However I got an error several days ago like:<br><br>CMake Error: Problem with archive_read_open_file(): Unrecognized archive format<br><br>It seems that what I download by CMake becomes 'HTML document, ASCII text' rather than 'Zip archive data, at least v2.0 to extract'. Could you tell me which URL should I use in ExternalProject_Add?<br><br>Thanks,<br>Yi-Hong<br></div>