Silence GCC 7.x warnings when building simulator

Adds -Wno-expansion-to-defined and -Wimplicit-fallthrough=0 to sim
opts.

Change-Id: I62148e392446ae6a3fbe4c4d55770b72962e393d

1 files changed, 5 insertions, 0 deletions

diff --git a/tools/configure b/tools/configure
index 0db6501288..7b3df06dcd 100755
--- a/tools/configure
+++ b/tools/configure
@@ -265,6 +265,11 @@ simcc () {
  # Some linux setups like to warn about unused results. They are correct,
  # but cleaning this up is a lot of work.
  GCCOPTS="$GCCOPTS -Wno-unused-result"
+ # GCC 7.x spits out a lot of warnings about macros containing
+ # defined() and fall-throughs in switch statements. Fixing all these
+ # is a waste of time.
+ GCCOPTS="$GCCOPTS -Wno-expansion-to-defined -Wimplicit-fallthrough=0"
+
  GCCOPTIMIZE=''
  LDOPTS="$LDOPTS -lm" # button-sdl.c uses sqrt()
  sigaltstack=""