# 使用包管理器安装（推荐）
sudo apt update
sudo apt install graphicsmagick

# 查看安装版本
gm version

# 查看支持的格式
gm convert -list format | head -30

# CentOS/RHEL (需要 EPEL 源)
sudo yum install epel-release
sudo yum install GraphicsMagick

# Fedora
sudo dnf install GraphicsMagick GraphicsMagick-devel

# 使用 Homebrew（推荐）
brew install graphicsmagick

# 使用 MacPorts
sudo port install graphicsmagick

# 方法 1：Chocolatey
choco install graphicsmagick

# 方法 2：Scoop
scoop install graphicsmagick

# 方法 3：下载安装包
# 访问 http://www.graphicsmagick.org/download.html
# 下载 Windows 64-bit 静态编译版本，解压后将 bin/ 加入 PATH

gm version
gm convert -list format

# FreeBSD
sudo pkg install graphicsmagick

# OpenBSD
sudo pkg_add graphicsmagick

# 从 Mercurial 仓库获取最新代码
hg clone http://hg.code.sf.net/p/graphicsmagick/code graphicsmagick
cd graphicsmagick

# 或下载稳定版 tarball
wget http://sourceforge.net/projects/graphicsmagick/files/graphicsmagick/1.3.43/GraphicsMagick-1.3.43.tar.gz
tar xzf GraphicsMagick-1.3.43.tar.gz
cd GraphicsMagick-1.3.43

# Debian/Ubuntu
sudo apt install build-essential \
  libpng-dev libjpeg-dev libtiff-dev \
  libwebp-dev libfreetype6-dev \
  libxml2-dev libbz2-dev zlib1g-dev \
  liblzma-dev libzstd-dev ghostscript \
  librsvg2-dev liblcms2-dev

# CentOS/RHEL
sudo yum groupinstall "Development Tools"
sudo yum install libpng-devel libjpeg-devel libtiff-devel \
  libwebp-devel freetype-devel libxml2-devel \
  bzip2-devel zlib-devel xz-devel libzstd-devel \
  librsvg2-devel lcms2-devel ghostscript

# 查看所有可用的配置选项
./configure --help

# 推荐的生产环境配置
./configure \
  --prefix=/usr/local \
  --enable-shared \
  --enable-static \
  --with-quantum-depth=16 \
  --with-modules \
  --with-xml \
  --with-lcms2 \
  --with-ttf \
  --with-freetype \
  --with-webp \
  --with-zstd \
  --with-jbig \
  --with-openmp \
  --enable-openmp-slow \
  --disable-openmp-slow \
  --enable-symbol-prefix

# 编译与安装
make -j$(nproc)
sudo make install
sudo ldconfig

gm version | grep "QuantumDepth"

# 列出所有支持的格式
gm convert -list format

# 只显示可读（R）、可写（W）格式
gm convert -list format | grep "^.rw"

# 一键安装所有格式支持（Debian/Ubuntu）
sudo apt install -y \
  libjpeg-dev libjpeg-turbo-progs \
  libpng-dev libtiff-dev libwebp-dev \
  libopenjp2-7-dev librsvg2-dev \
  libheif-dev libjbig-dev liblcms2-dev \
  libfreetype6-dev libxml2-dev \
  libbz2-dev zlib1g-dev liblzma-dev libzstd-dev \
  ghostscript

# 查看 OpenMP 支持
gm convert -list resource

# 设置线程数（覆盖默认 CPU 核心数）
export OMP_NUM_THREADS=4
gm convert -resize 50% huge_input.jpg output.jpg

# 在脚本中控制
OMP_NUM_THREADS=8 gm mogrify -resize "800x600" *.jpg

# 生产环境推荐配置
export MAGICK_TMPDIR=/dev/shm/gm-tmp
export MAGICK_MAP_LIMIT=4GiB
export MAGICK_MEMORY_LIMIT=2GiB
export MAGICK_DISK_LIMIT=16GiB
export MAGICK_FILE_LIMIT=768
export OMP_NUM_THREADS=4

# 创建 RAM 盘用于临时文件（显著提升性能）
mkdir -p /dev/shm/gm-tmp

#!/bin/bash
echo "=== GraphicsMagick 安装验证 ==="
echo ""

# 1. 版本信息
echo "【1】版本信息"
gm version | head -5
echo ""

# 2. 格式支持
echo "【2】支持的格式数量"
format_count=$(gm convert -list format | tail -n +2 | wc -l)
echo "共支持 $format_count 种格式"
echo ""

# 3. 关键格式检查
echo "【3】关键格式支持"
for fmt in JPEG PNG TIFF WebP HEIF PDF SVG; do
  if gm convert -list format | grep -qi "$fmt"; then
    echo "  ✅ $fmt"
  else
    echo "  ❌ $fmt (未安装)"
  fi
done
echo ""

# 4. 资源限制
echo "【4】资源限制"
gm convert -list resource 2>/dev/null
echo ""

# 5. OpenMP 检查
echo "【5】OpenMP 支持"
gm version | grep -i openmp || echo "  未检测到 OpenMP 支持"
echo ""

# 6. 功能测试
echo "【6】功能测试"
gm convert -size 100x100 xc:red /tmp/gm_test.png && \
  echo "  ✅ PNG 写入正常" && rm -f /tmp/gm_test.png

gm convert -size 100x100 xc:blue /tmp/gm_test.jpg && \
  echo "  ✅ JPEG 写入正常" && rm -f /tmp/gm_test.jpg

echo ""
echo "=== 验证完成 ==="

# 检查缺少哪些格式
gm convert -list format | grep -v "^.r"

# 减少线程数
export OMP_NUM_THREADS=2

# 或禁用 OpenMP
export OMP_NUM_THREADS=1

# 安装字体
sudo apt install fonts-dejavu-core fonts-liberation

# 或指定字体路径
gm convert -font /path/to/font.ttf \
  -pointsize 24 -draw "text 10,30 'Hello'" \
  xc:white output.png