libffcall1b 2.2-1 (amd64 binary) in ubuntu impish

 ffcall is a collection of libraries which can be used to build
 foreign function call interfaces in embedded interpreters.
 .
 This package installs a shared version of the main libffcall library,
 which consists of two parts:
 .
    avcall - calling C functions with variable arguments
 .
    callback - closures with variable arguments as first-class C functions