Merge pull request #395 from philss/ps-remove-unsupported-nifs

Remove remaning code from unsupported NIF versions

README.md

@@ -52,10 +52,10 @@ Rustler aims to support the newest three OTP versions as well as Elixir versions
 Rustler uses `erlang:system_info(nif_version)` to detect the supported NIF version of the Erlang/OTP
 system for which the NIF is to be compiled. It is possible to restrict the NIF version to an older
 version if the NIF is to be compiled for an older version of Erlang. For example, if the target NIF
-version should be `2.7` (Erlang/OTP 17.3), this can be defined using an environment variable:
+version should be `2.14` (Erlang/OTP 21), this can be defined using an environment variable:
 
 ```
-RUSTLER_NIF_VERSION=2.7 mix compile
+RUSTLER_NIF_VERSION=2.14 mix compile
 ```
 
 #### Community

rustler/build.rs

@@ -3,9 +3,7 @@ use std::env;
 use std::process::Command;
 
 // keep this sorted by version number
-const NIF_VERSION: &[&str] = &[
-    "2.7", "2.8", "2.9", "2.10", "2.11", "2.12", "2.13", "2.14", "2.15", "2.16",
-];
+const NIF_VERSION: &[&str] = &["2.14", "2.15", "2.16"];
 
 fn main() {
     let latest_version = NIF_VERSION.last().unwrap().to_string();

rustler_mix/lib/rustler.ex

@@ -125,13 +125,6 @@ defmodule Rustler do
   """
   def nif_versions,
     do: [
-      '2.7',
-      '2.8',
-      '2.9',
-      '2.10',
-      '2.11',
-      '2.12',
-      '2.13',
       '2.14',
       '2.15',
       '2.16'

rustler_sys/gen_api.erl

@@ -15,7 +15,6 @@
     getenv                 |  % enif_getenv() functions
     time                   |  % new timer API
     {ulongsize, integer()} |  % number of bytes in a C ulong
-    dirty_schedulers       |  % enif_is_on_dirty_scheduler().  Only for 2.7-2.10
     dirty_scheduler_opt    |  % dirty scheduler nifentry option flag.  For >=2.7
     nif_2_11               .  % general 2.11 API additions