Installing the Icestorm-based iCE40 toolchain using a nonstandard prefix

build-notes.txt

git clone https://github.com/cliffordwolf/icestorm.git icestorm
cd icestorm
PREFIX=~ make -j$(nproc)
PREFIX=~ sudo make install

Installing Arachne-PNR (place&route tool, predecessor to NextPNR):

git clone https://github.com/cseed/arachne-pnr.git arachne-pnr
cd arachne-pnr
PREFIX=~ make -j$(nproc)
PREFIX=~ sudo make install

Installing NextPNR (place&route tool, Arachne-PNR replacement):

git clone https://github.com/YosysHQ/nextpnr nextpnr
cd nextpnr
cmake -DARCH=ice40 -DCMAKE_INSTALL_PREFIX=~ -DICEBOX_ROOT=~/share/icebox .
PREFIX=~ make -j$(nproc)
PREFIX=~ sudo make install

Installing Yosys (Verilog synthesis):

git clone https://github.com/cliffordwolf/yosys.git yosys
cd yosys
PREFIX=~ make -j$(nproc)
PREFIX=~ sudo make install