From 353b3852fd03168585d868c5c7580e2f0599cb19 Mon Sep 17 00:00:00 2001
From: Daniel Hahler <git@thequod.de>
Date: Wed, 17 Jul 2019 18:43:18 +0200
Subject: [PATCH] ci: Travis: ccache: use CCACHE_HASHDIR  [skip appveyor]

This is the default since ccache 3.3, but Travis has 3.2.4.

This fixes compiler warnings from macros with later clang/gcc.

Using CCACHE_HASHDIR=1 fixes ccache v3.2.4, but CCACHE_NOHASHDIR=1 does
not break v3.7.1. The real issue/fix appears to be
ccache/ccache@284e3a0, and using the hashdir option seems to only work
around this.

Unblocks https://github.com/neovim/neovim/pull/10480, and
https://github.com/neovim/neovim/pull/10487.

Ref: https://github.com/ccache/ccache/commit/6d9cb3dfdd9
Closes https://github.com/neovim/neovim/pull/10533.
---
 .travis.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index d550a550d8..e6767404ae 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -46,6 +46,8 @@ env:
     - CCACHE_COMPRESS=1
     - CCACHE_SLOPPINESS=time_macros,file_macro
     - CCACHE_BASEDIR="$TRAVIS_BUILD_DIR"
+    # Default since 3.3, but Travis (Xenial) has 3.2.4; workaround (#10533).
+    - CCACHE_HASHDIR=1
 
 anchors:
   envs: &common-job-env