travis: rework scripts to re-enable macOS

* Adds a script to clone and build FFmpeg as well as
  to configure and build mpv itself. Currently only used
  for macOS and contain hard-coded macOS specific options.
* Still works with the Linux containers.
* Moves our language back to "c" from "generic"
* Defines our Linux distribution as "bionic" to get the latest
  Ubuntu base distribution to be the runner for our containers.
* Adds the homebrew add-on for macOS package installation for
  dependencies. Installs everything required but FFmpeg, as we want
  to have our own FFmpeg snapshots.

1 files changed, 38 insertions, 0 deletions

diff --git a/ci/get_ffmpeg.sh b/ci/get_ffmpeg.sh
new file mode 100755
index 0000000000..ef575701d9
--- /dev/null
+++ b/ci/get_ffmpeg.sh
@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+
+set -e
+
+FFMPEG_SRC_DIR="${HOME}/deps/src/ffmpeg"
+FFMPEG_BUILD_DIR="${FFMPEG_SRC_DIR}/${TRAVIS_OS_NAME}"
+FFMPEG_SYSROOT="${HOME}/deps/sysroot"
+FFMPEG_HASH="18928e2bb4568cbe5e9061c3e6b63559392af3d2"
+
+# Get the sauce if not around
+if [[ ! -d "${FFMPEG_SRC_DIR}" ]] ; then
+    git clone "https://git.videolan.org/git/ffmpeg.git" "${FFMPEG_SRC_DIR}"
+fi
+
+# pop into FFmpeg's source dir and clean up & check out our wanted revision
+pushd "${FFMPEG_SRC_DIR}"
+git reset --hard HEAD && git clean -dfx
+git checkout "${FFMPEG_HASH}"
+popd
+
+# If a build dir of the same type is around, clean it up
+if [[ -d "${FFMPEG_BUILD_DIR}" ]] ; then
+    rm -rf "${FFMPEG_BUILD_DIR}"
+fi
+
+# Create and move into the build dir, configure and build!
+mkdir -p "${FFMPEG_BUILD_DIR}" && pushd "${FFMPEG_BUILD_DIR}"
+
+PKG_CONFIG_PATH="${FFMPEG_SYSROOT}/lib/pkgconfig/" ../configure \
+  --disable-{autodetect,stripping} \
+  --cc="${CC}" \
+  --cxx="${CXX}" \
+  --prefix="${FFMPEG_SYSROOT}" \
+  --enable-{zlib,securetransport,videotoolbox}
+
+make -j4 && make install && popd
+
+exit 0