sudo ldconfig /usr/local/lib
After installation, you must update the shared library cache so the system can find the new ImageMagick libraries.
sudo ./configure
https://www.imagemagick.org/download/ImageMagick-7.1.1-15.tar.gz
sudo make install
sudo ./configure --with-modules --prefix=/usr/local
The official ImageMagick 7.1.1-15 release files, including the tar.gz source code and related binaries, are available through the following authoritative channels: