Created attachment 409 [details] config.log + visa package details + lsb_release Visa library is installed but isn't detected by ./configure in libsigrok.
That's an upstream "bug" in librevisa (we could in theory use a non-pkg-config based detection in libsigrok), it doesn't ship with a .pc file for pkg-config, see e.g. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=749144 The library is not actively maintained anyway apparently, last release was 2013, we might want to consider to use something else or integrate some code into libsigrok directly at some point. I'm also pretty sure nobody has used the VISA code in libsigrok in the last 5 years or so, not sure if it would work (or how much of it would work). Anyway, if you do want to test the current state either way you can manually create a librevisa.pc file and copy it to e.g. /usr/lib/x86_64-linux-gnu/pkgconfig. Contents e.g. something like this: prefix=/usr exec_prefix=${prefix} libdir=${prefix}/lib/x86_64-linux-gnu includedir=${prefix}/include Name: librevisa Description: Version: 0.0.20130812 Libs: -L${libdir} -lvisa Cflags: -I${includedir}