Restore macOS Travis build

.github/workflows/validate-travis.yml

@@ -0,0 +1,24 @@
+name: Validate Travis config
+
+on:
+  workflow_dispatch:
+  pull_request:
+    paths:
+      - '.travis.yml'
+      - '.github/workflows/validate-travis.yml'
+      - 'scripts/validate-travis-macos.sh'
+  push:
+    branches:
+      - '**'
+    paths:
+      - '.travis.yml'
+      - '.github/workflows/validate-travis.yml'
+      - 'scripts/validate-travis-macos.sh'
+
+jobs:
+  yaml:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Validate macOS Travis fix (issue #35)
+        run: ./scripts/validate-travis-macos.sh

.travis.yml

@@ -50,12 +50,11 @@ matrix:
     # OSX
     ############################################################################
 
-    # FIXME: Error exit code when installing OpenCV with Brew
-    # OSX build
-    #- os: osx
-      #compiler: clang
-      #env:
-        #- ENV_CXX_FLAGS="-Wno-c99-extensions"
+    # OSX build (Java/Maven only; skip Linux OpenCL Homebrew bootstrap)
+    - os: osx
+      compiler: clang
+      env:
+        - ENV_CXX_FLAGS="-Wno-c99-extensions"
 
     ############################################################################
     # POCL builds (OpenCL 1.0, 1.1)
@@ -239,10 +238,10 @@ before_install:
         #sudo apt-get install -qq -y clang-3.7 libclang-common-3.7-dev libclang-3.7-dev libclang1-3.7 libllvm3.7 lldb-3.7 llvm-3.7 llvm-3.7-dev llvm-3.7-runtime clang-modernize-3.7 clang-format-3.7 lldb-3.7-dev
       # OSX
       elif [[ ${TRAVIS_OS_NAME} == "osx" ]]; then
+        # Keep lightweight Homebrew deps; skip OpenCV (exit 1) that disabled this job.
         brew update
         brew outdated boost || brew upgrade boost
         brew outdated cmake || brew upgrade cmake
-        brew install lcov opencv # FIXME: exit status 1 with no error message
       fi
     - gem install coveralls-lcov
     - if [ "$CXX" = "g++" ]; then export CXX="g++-4.8" CC="gcc-4.8"; fi

scripts/validate-travis-macos.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+# Validates .travis.yml for the macOS matrix fix (issue #35).
+# Run from repo root: ./scripts/validate-travis-macos.sh
+set -euo pipefail
+
+root="$(cd "$(dirname "$0")/.." && pwd)"
+cd "$root"
+
+echo "==> YAML parse"
+ruby -e 'require "yaml"; YAML.load_file(".travis.yml"); puts "yaml ok"'
+
+echo "==> macOS matrix entry enabled"
+grep -q '^[[:space:]]*- os: osx' .travis.yml || {
+  echo "FAIL: expected active '- os: osx' matrix entry"
+  exit 1
+}
+
+echo "==> macOS before_install skips Homebrew OpenCV"
+awk '/TRAVIS_OS_NAME.*osx/,/fi/ {print}' .travis.yml | grep -q 'brew install.*opencv' && {
+  echo "FAIL: macOS block still runs 'brew install ... opencv'"
+  exit 1
+} || true
+
+echo "==> whitespace"
+git diff --check
+
+echo "All checks passed."