Linux versino and Gif output

build.sh

@@ -1,14 +1,32 @@
 #!/usr/bin/env bash
-# Builds VibEdit for Windows from any OS (pure Go, no C toolchain needed).
+# Builds VibEdit for Windows and/or Linux from any OS (pure Go, no C toolchain
+# needed).
 #
-#   ./build.sh             -> dist/vibedit.exe
-#   ./build.sh --package   -> also downloads a Windows ffmpeg build and creates
-#                             dist/VibEdit-windows-x64.zip (exe + ffmpeg, ready to run)
+#   ./build.sh                     -> dist/vibedit.exe (Windows x64)
+#   ./build.sh linux               -> dist/vibedit     (Linux x64)
+#   ./build.sh all                 -> both
+#   ./build.sh [target] --package  -> also downloads ffmpeg for that OS and creates
+#                                     dist/VibEdit-windows-x64.zip and/or
+#                                     dist/VibEdit-linux-x64.tar.xz (ready to run)
 set -euo pipefail
 cd "$(dirname "$0")"
 
 VERSION=1.0.0
 FFMPEG_URL=https://www.gyan.dev/ffmpeg/builds/ffmpeg-release-essentials.zip
+# Static release build (needs glibc 2.28+) with the same GPU encoders as the
+# Windows one. BtbN keeps only the newest release branches, so bump the
+# version here when this URL stops working.
+FFMPEG_LINUX_URL=https://github.com/BtbN/FFmpeg-Builds/releases/download/latest/ffmpeg-n9.0-latest-linux64-gpl-9.0.tar.xz
+
+TARGET=windows
+PACKAGE=0
+for arg in "$@"; do
+  case "$arg" in
+    windows|linux|all) TARGET=$arg ;;
+    --package) PACKAGE=1 ;;
+    *) echo "usage: $0 [windows|linux|all] [--package]" >&2; exit 2 ;;
+  esac
+done
 
 GO=${GO:-go}
 if ! command -v "$GO" >/dev/null 2>&1 && [ -x "$HOME/.local/go/bin/go" ]; then
@@ -16,27 +34,30 @@ if ! command -v "$GO" >/dev/null 2>&1 && [ -x "$HOME/.local/go/bin/go" ]; then
 fi
 
 mkdir -p dist
-GOOS=windows GOARCH=amd64 CGO_ENABLED=0 "$GO" build -trimpath \
-  -ldflags "-s -w -X main.version=$VERSION" -o dist/vibedit.exe .
-echo "Built dist/vibedit.exe"
 
-if [ "${1:-}" != "--package" ]; then
-  exit 0
-fi
+# download URL NAME: fetches URL to dist/cache/NAME unless it is already there.
+download() {
+  mkdir -p dist/cache
+  if [ ! -f "dist/cache/$2" ]; then
+    echo "Downloading $1 ..."
+    wget -q --show-progress -O "dist/cache/$2.tmp" "$1"
+    mv "dist/cache/$2.tmp" "dist/cache/$2"
+  fi
+}
 
-mkdir -p dist/cache
-if [ ! -f dist/cache/ffmpeg-essentials.zip ]; then
-  echo "Downloading ffmpeg for Windows from gyan.dev ..."
-  wget -q --show-progress -O dist/cache/ffmpeg-essentials.zip.tmp "$FFMPEG_URL"
-  mv dist/cache/ffmpeg-essentials.zip.tmp dist/cache/ffmpeg-essentials.zip
-fi
+build_windows() {
+  GOOS=windows GOARCH=amd64 CGO_ENABLED=0 "$GO" build -trimpath \
+    -ldflags "-s -w -X main.version=$VERSION" -o dist/vibedit.exe .
+  echo "Built dist/vibedit.exe"
+  [ "$PACKAGE" = 1 ] || return 0
 
-rm -rf dist/VibEdit dist/VibEdit-windows-x64.zip
-mkdir -p dist/VibEdit
-cp dist/vibedit.exe dist/VibEdit/
-cp package-readme.txt dist/VibEdit/README.txt
+  download "$FFMPEG_URL" ffmpeg-essentials.zip
+  rm -rf dist/VibEdit dist/VibEdit-windows-x64.zip
+  mkdir -p dist/VibEdit
+  cp dist/vibedit.exe dist/VibEdit/
+  cp package-readme.txt dist/VibEdit/README.txt
 
-python3 - <<'EOF'
+  python3 - <<'EOF'
 import os, zipfile
 
 src = zipfile.ZipFile("dist/cache/ffmpeg-essentials.zip")
@@ -56,4 +77,64 @@ with zipfile.ZipFile("dist/VibEdit-windows-x64.zip", "w", zipfile.ZIP_DEFLATED)
     for name in sorted(os.listdir("dist/VibEdit")):
         out.write(os.path.join("dist/VibEdit", name), "VibEdit/" + name)
 EOF
-echo "Packaged dist/VibEdit-windows-x64.zip"
+  echo "Packaged dist/VibEdit-windows-x64.zip"
+}
+
+build_linux() {
+  GOOS=linux GOARCH=amd64 CGO_ENABLED=0 "$GO" build -trimpath \
+    -ldflags "-s -w -X main.version=$VERSION" -o dist/vibedit .
+  echo "Built dist/vibedit"
+  [ "$PACKAGE" = 1 ] || return 0
+
+  local cache
+  cache=$(basename "$FFMPEG_LINUX_URL")
+  download "$FFMPEG_LINUX_URL" "$cache"
+  rm -rf dist/linux-x64 dist/VibEdit-linux-x64.tar.xz
+  mkdir -p dist/linux-x64/VibEdit
+  cp dist/vibedit linux/install.sh dist/linux-x64/VibEdit/
+  cp linux/README.txt dist/linux-x64/VibEdit/README.txt
+  cp winres/icon.png dist/linux-x64/VibEdit/vibedit.png
+
+  echo "Compressing (takes a minute or two) ..."
+  python3 - "dist/cache/$cache" <<'EOF'
+import os, sys, tarfile
+
+dst = "dist/linux-x64/VibEdit"
+wanted = {"ffmpeg": "ffmpeg", "ffprobe": "ffprobe", "LICENSE.txt": "ffmpeg-LICENSE.txt"}
+executables = {"vibedit", "ffmpeg", "ffprobe", "install.sh"}
+found = set()
+with tarfile.open(sys.argv[1]) as src:
+    for m in src.getmembers():
+        base = os.path.basename(m.name)
+        if m.isfile() and base in wanted and base not in found:
+            path = os.path.join(dst, wanted[base])
+            with open(path, "wb") as f:
+                f.write(src.extractfile(m).read())
+            os.chmod(path, 0o755 if wanted[base] in executables else 0o644)
+            found.add(base)
+missing = set(wanted) - found
+if missing:
+    raise SystemExit("ffmpeg archive is missing: " + ", ".join(sorted(missing)))
+
+def normalize(ti):
+    ti.uid = ti.gid = 0
+    ti.uname = ti.gname = ""
+    if ti.isdir() or os.path.basename(ti.name) in executables:
+        ti.mode = 0o755
+    else:
+        ti.mode = 0o644
+    return ti
+
+with tarfile.open("dist/VibEdit-linux-x64.tar.xz", "w:xz") as out:
+    out.add(dst, "VibEdit", recursive=False, filter=normalize)
+    for name in sorted(os.listdir(dst)):
+        out.add(os.path.join(dst, name), "VibEdit/" + name, filter=normalize)
+EOF
+  echo "Packaged dist/VibEdit-linux-x64.tar.xz"
+}
+
+case "$TARGET" in
+  windows) build_windows ;;
+  linux) build_linux ;;
+  all) build_windows; build_linux ;;
+esac