fix(build): nasm GitHub fallback needs autogen.sh, bump DEPS_VERSION to v8

The GitHub source archive for nasm doesn't include a pre-generated
configure script (unlike the official nasm.us tarball). When the
primary download fails and we fall back to GitHub, we need to run
./autogen.sh first to generate the configure script.

Changes:
- Run autogen.sh when using GitHub nasm source archive
- Add autoconf to brew install (required by autogen.sh)
- Bump DEPS_VERSION to v8 in ci.yml and build-prebuilds.yml
- Add glibc variant download for Linux in ci.yml

Author: pproenca

.github/workflows/build-ffmpeg.yml

@@ -241,7 +241,7 @@ jobs:
 
       - name: Install build dependencies
         run: |
-          brew install automake libtool nasm cmake pkg-config
+          brew install autoconf automake libtool nasm cmake pkg-config
 
       - name: Cache compiled libraries
         uses: actions/cache@v5
@@ -277,14 +277,16 @@ jobs:
           if curl -fSL --retry 3 --retry-delay 5 "$NASM_URL" -o nasm.tar.bz2 2>/dev/null; then
             echo "Downloaded nasm from primary source"
             tar xjf nasm.tar.bz2
+            cd nasm-${NASM_VERSION}
           else
             echo "Primary nasm download failed, trying GitHub mirror..."
             curl -fSL --retry 3 "$NASM_GITHUB" -o nasm.tar.gz
             tar xzf nasm.tar.gz
-            mv nasm-nasm-${NASM_VERSION} nasm-${NASM_VERSION}
+            cd nasm-nasm-${NASM_VERSION}
+            # GitHub source archive requires autogen.sh to create configure script
+            ./autogen.sh
           fi
 
-          cd nasm-${NASM_VERSION}
           ./configure --prefix="$TARGET"
           make -j$(sysctl -n hw.ncpu)
           make install

.github/workflows/build-prebuilds.yml

@@ -42,7 +42,7 @@ jobs:
     name: "prebuild-${{ matrix.platform }}"
     runs-on: ${{ matrix.os }}
     env:
-      DEPS_VERSION: ${{ inputs.deps_version || 'v7' }}
+      DEPS_VERSION: ${{ inputs.deps_version || 'v8' }}
     strategy:
       fail-fast: false
       matrix:

.github/workflows/ci.yml

@@ -36,7 +36,7 @@ jobs:
     name: "build-${{ matrix.platform }}-nodejs-${{ matrix.nodejs_version }}"
     runs-on: ${{ matrix.os }}
     env:
-      DEPS_VERSION: v7  # Bump when running new build-ffmpeg workflow
+      DEPS_VERSION: v8  # Bump when running new build-ffmpeg workflow
     strategy:
       fail-fast: false
       matrix:
@@ -82,7 +82,8 @@ jobs:
         with:
           repo: ${{ github.repository }}
           version: tags/deps-${{ env.DEPS_VERSION }}
-          file: ffmpeg-${{ matrix.platform }}.tar.gz
+          # Use glibc variant for Linux (musl libs can't link into glibc shared objects)
+          file: ffmpeg-${{ matrix.platform }}${{ runner.os == 'Linux' && '-glibc' || '' }}.tar.gz
           target: ffmpeg-${{ matrix.platform }}.tar.gz
           token: ${{ secrets.GITHUB_TOKEN }}