File 0476-hipe_llvm_main-fix-tmpfs-dir-on-FreeBSD.patch of Package erlang

From 3d054bfa6ce74a11107b8b276426bcc498cadd56 Mon Sep 17 00:00:00 2001
From: Iblis Lin <iblis@hs.ntnu.edu.tw>
Date: Wed, 26 Sep 2018 10:33:03 +0800
Subject: [PATCH] hipe_llvm_main: fix tmpfs dir on FreeBSD

Upstream this patch from FreeBSD Ports:
https://svnweb.freebsd.org/ports/head/lang/erlang-runtime21/files/patch-lib_hipe_llvm_hipe__llvm__main.erl?revision=473434&view=markup
---
 .gitignore                       |  1 +
 lib/hipe/llvm/hipe_llvm_main.erl | 10 +++++++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/lib/hipe/llvm/hipe_llvm_main.erl b/lib/hipe/llvm/hipe_llvm_main.erl
index 54c435c127..1d7a51b5b1 100644
--- a/lib/hipe/llvm/hipe_llvm_main.erl
+++ b/lib/hipe/llvm/hipe_llvm_main.erl
@@ -527,7 +527,7 @@ unique_folder(FunName, Arity, Options) ->
       true ->  %% Store folder in current directory
         DirName;
       false -> %% Temporarily store folder in tempfs (/dev/shm/)
-        "/dev/shm/" ++ DirName
+        tmpfs_folder() ++ DirName
     end,
   %% Make sure it does not exist
   case dir_exists(Dir) of
@@ -537,6 +537,14 @@ unique_folder(FunName, Arity, Options) ->
       Dir
   end.
 
+tmpfs_folder() ->
+  case os:type() of
+    {unix, linux} ->
+      "/dev/shm/";
+    {unix, _} -> %% Fallback to tmp dir. e.g. FreeBSD
+      "/tmp/"
+  end.
+
 %% @doc Function that checks that a given Filename is an existing Directory
 %%      Name (from http://rosettacode.org/wiki/Ensure_that_a_file_exists#Erlang)
 dir_exists(Filename) ->
-- 
2.16.4