Add temporary install directory for FFmpeg

Author: staszczuk

.github/scripts/setup_environment.sh

@@ -40,6 +40,7 @@ set -xe
 # CICD ONLY ARGUMENTS
 : "${CICD_BUILD:=0}"
 : "${CICD_BUILD_BUILD_ICE_DRIVER:=0}"
+: "${INSTALL_DIR:=''}"
 
 script_name=$(basename "${BASH_SOURCE[0]}")
 script_path=$(readlink -qe "${BASH_SOURCE[0]}")

.github/workflows/base_build.yml

@@ -30,6 +30,7 @@ env:
   TOOLS_BUILD_AND_INSTALL_MTL_MONITORS: 0
   TOOLS_BUILD_AND_INSTALL_MTL_READCAP: 1
   TOOLS_BUILD_AND_INSTALL_MTL_CPU_EMULATOR: 1
+  INSTALL_DIR: ''
 
 permissions:
   contents: read
@@ -62,6 +63,9 @@ jobs:
         with:
           egress-policy: audit
 
+      - name: 'Create temporary install directory'
+        run: 'echo "INSTALL_DIR=$(mktemp -d --tmpdir mtl-XXXXXXXXXX)" >> "$GITHUB_ENV"'
+
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
       - name: Build Release
@@ -74,8 +78,8 @@ jobs:
           path: |
             build/
             ecosystem/gstreamer_plugin/builddir/
-            FFmpeg/
             tests/tools/RxTxApp/build/
+            ${{ env.INSTALL_DIR }}/ffmpeg/
 
   ubuntu-ebpf-xdp-build:
     needs: changes

ecosystem/ffmpeg_plugin/build.sh

@@ -5,10 +5,13 @@
 
 set -e
 
+: "${INSTALL_DIR:=''}"
+
 # Default values
 ffmpeg_ver="7.0"
 enable_gpu=false
 script_path="$(dirname "$(readlink -f "$0")")"
+extra_config_flags=""
 
 # Help message function
 usage() {
@@ -65,9 +68,12 @@ build_ffmpeg() {
 
 	if [ "$enable_gpu" = true ]; then
 		echo "Building with MTL_GPU_DIRECT_ENABLED"
-		extra_config_flags="--extra-cflags=-DMTL_GPU_DIRECT_ENABLED"
-	else
-		extra_config_flags=""
+		extra_config_flags+="--extra-cflags=-DMTL_GPU_DIRECT_ENABLED "
+	fi
+
+	if [ -n "$INSTALL_DIR" ]; then
+		echo "Installing in $INSTALL_DIR"
+		extra_config_flags+="--prefix=${INSTALL_DIR}/ffmpeg/"
 	fi
 
 	./configure --enable-shared --disable-static --enable-nonfree --enable-pic --enable-gpl --enable-libopenh264 --enable-encoder=libopenh264 --enable-mtl $extra_config_flags