package configurator

README.org

* Configurator

Configurator is a small library that helps writing OCaml scripts that
test features available on the system, in order to generate config.h
files for instance.

Configurator allows one to:
- test if a C program compiles
- query pkg-config
- import #define from OCaml header files
- generate config.h file

For instance:

#+begin_src ocaml
open Base
module C = Configurator

let clock_gettime_code = {|
#include <time.h>

int main()
{
  struct timespec ts;
  clock_gettime(CLOCK_REALTIME, &ts);
  return 0;
}
|}

let () =
  C.main ~name:"foo" (fun c ->
    let has_clock_gettime = C.c_test c clock_gettime_code ~link_flags:["-lrt"] in

    C.C_define.gen_header_file c ~fname:"config.h"
      [ "HAS_CKOCK_GETTIME", Switch has_ckock_gettime ]);
#+end_src