To be able to build the library on a Raspberry Pi itself, you need to do the following:
- Install the packages tcl-dev, libi2c-dev, and autoconf, if necessary:
sudo apt install tcl-dev libi2c-dev autoconf
- Download the piio sources.
- Unpack the tarball:
tar xvf piio.tar.gz
- Go to the source directory:
- Get the standard tclconfig files:
wget -qO- http://core.tcl.tk/tclconfig/tarball/tclconfig.tar.gz | tar xzv
- Create the configure script from configure.in:
- I prefer to build in a separate directory:
mkdir build;cd build
- Run configure:
- Build the library:
- Optionally install it:
sudo make install
Compiling on the Raspberry Pi itself is slow. Since the code of the piio library isn't very big, it's not a big problem. But of course, it's also possible to cross compile the library on a more powerful linux system. To do that, you need a cross compile environment. One way to create that is using the build-cc script. Make sure you have installed all necessary development packages before running the script.
You'll also need a stubs library compiled for a Raspberry Pi. You can generate that by cross compiling Tcl first.
Next, run the following commands:
wget -qO- http://core.tcl.tk/tclconfig/tarball/tclconfig.tar.gz | tar xzv autoconf mkdir build cd build eval $(~/root/cross-compilers/setup-cc armv6-hardfloat-linux-gnueabi) ../configure -host=armv6-hardfloat-linux-gnueabi --with-tcl=~/rpi/tcl8.5.15/build make