Pick up some changes made to the tcpdump .travis.yml.

1)
    Don't bother with "GCC" on macOS.

    The "gcc" on the Travis buildbots is just Apple's "gcc", which is an
    alternate front end to Clang, rather than being GCC-for-macOS.

2)
    Only do 64-bit x86 Coverity build.

    If we're doing a Coverity build, only do it once.  Now that we're
    building for multiple instruction sets, we need to check the instruction
    set to ensure that.

3)
    Cut down the build matrix for macOS.

    macOS currently runs only on 64-bit x86, so eliminate all the other
    architecture builds for it.  (It may run on 64-bit ARM in the future,
    but is unlikely ever to run on z/Architecture, and probably won't be
    re-introduced to the world of the Power ISA, much less little-endian
    Power ISA.)

diff --git a/.travis.yml b/.travis.yml
index 2484b5e78a16ba88e57a18bd5e7c9ea44d229e0d..64991eec1e6303c0f8978c73088ce974633def14 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,9 @@
 language: c
 
+#
+# Try building on these 4 architectures; all are 64-bit, and all but
+# "s390x", a/k/a z/Architecture, are little-endian.
+#
 arch:
   - amd64
   - ppc64le
@@ -16,6 +20,28 @@ compiler:
   - gcc
   - clang
 
+#
+# Linux runs on all of the architectures listed above; macOS currently
+# runs only on 64-bit x86, although the Spaceshipologists are all in a
+# tizzy about the possibility of Arm-based Macs.  Suppress the macOS
+# builds that don't work.
+#
+# In addition, with newer versions of macOS, Apple ships a "gcc" that's
+# just another front end to Clang, presumably for backwards
+# compatibility with build scripts etc. that expect the compiler to be
+# "gcc", so don't bother doing "gcc" builds on macOS.
+#
+jobs:
+  exclude:
+  - arch: ppc64le
+    os: osx
+  - arch: s390x
+    os: osx
+  - arch: arm64
+    os: osx
+  - compiler: gcc
+    os: osx
+
 cache: ccache
 
 env:
@@ -25,7 +51,7 @@ env:
     - secure: "SwNcek+I4lMVcnb5EGGmNm6ljWN6C/mnXzBr82a5rEQNKxAoJfdvvPpKIp0iEfg5j0PtYlcRHoIDyVZ/6QM/WEw0wrio9Z0cio9hkOS6kV8g2QouXfnoNtKJ5nNso7UD2GPJ9+M0GIR1GZ0Edvxr81sHlNAkpVKydYGBwCIMGyg="
     # Coverity run condition (avoid matrix multiple runs), need customized
     # build script. Need an update if new matrix cases.
-    - coverity_scan_run_condition='"$TRAVIS_OS_NAME" = linux -a "$CC" = gcc -a "$REMOTE" = enable -a "$CMAKE" = no'
+    - coverity_scan_run_condition='"$TRAVIS_CPU_ARCH" = amd64 -a "$TRAVIS_OS_NAME" = linux -a "$CC" = gcc -a "$REMOTE" = enable -a "$CMAKE" = no'
     # Coverity script test mode (if true no uploading, avoid reaching the quota)
     # usual processing: false.
     - coverity_scan_script_test_mode=false