From b6854df4298858ac09a1013a1cf9c3aa1752eef8 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 27 Nov 2018 08:39:39 +0000
Subject: [PATCH] .travis.yml: discard config.cache if CC changed

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66028 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 .travis.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.travis.yml b/.travis.yml
index d0514c31a2..5fc4486aa9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -339,6 +339,7 @@ before_script:
     gcc*)   the_gcc=(ccache $CC ${GCC_FLAGS[@]} -fno-diagnostics-color) ;;
     clang*) the_gcc=(ccache $CC ${GCC_FLAGS[@]} -fno-color-diagnostics) ;;
     esac
+  - "[ ! -f config.cache ] || [ \"$CC\" = \"`sed -n s/^ac_cv_prog_CC=//p config.cache`\" ] || (set -x; exec rm config.cache)"
   - "$SETARCH ../configure -C --disable-install-doc --prefix=/tmp/ruby-prefix --with-gcc=\"${the_gcc[*]}\" $CONFIG_FLAG"
   - "cp -pr config.cache config.status .ext/include ../config_1st"
   - "$SETARCH make reconfig"