travis: Use -O3 option (GH-5599)

We don't use debugger on Travis. (cherry picked from commit 8ff53564)

travis: Use -O3 option (GH-5599)
We don't use debugger on Travis. (cherry picked from commit 8ff53564)
730fb07c · INADA Naoki · GitHub · 36af1187 · 730fb07c
Commit 730fb07c authored Apr 25, 2018 by INADA Naoki Committed by GitHub Apr 25, 2018
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.travis.yml .travis.yml +5 -0

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--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,11 @@ cache:
  - pip
  - ccache

+env:
+  global:
+    # Use -O3 because we don't use debugger on Travis-CI
+    - CFLAGS="-O3"
+
 branches:
  only:
    - master