在 Xcode 项目中使用动态库 (DevIL/OpenIL)

Question

我正在尝试编译使用 OpenGL、SDL 和 IL（又名 DevIL，又名 OpenIL）库的示例源代码。 OpenGL 和 SDL 可用作本机框架，但 DevIL 则不然。所以这就是我所做的：

我通过自制软件安装了 DevIL。首先，我更改了公式，因为我需要 ILUT:

brew edit devil

编辑这些行

def install
  system "./configure", "--disable-debug", "--disable-dependency-tracking",
                        "--prefix=#{prefix}", "--enable-ILU"
  system "make install"
end

然后像这样

def install
  system "./configure", "--disable-debug", "--disable-dependency-tracking",
                        "--prefix=#{prefix}", "--enable-ILU", "--enable-ILUT"
  system "make install"
end

并安装所有

[sudo] brew install devil

内容，这为我提供了 /usr/local/include/ 中的 DevIL 标头和 中的动态库/usr/local/lib/。接下来，我通过以下步骤将库添加到我的项目中：

• 右键单击我唯一的目标
• 单击“添加>现有框架”
• 选择“Dylibs”
• 添加libIL.dylib，libILU。 dylib 和 libILUT.dylib

（还有 libIL.1.dylib、libILU.1.dylib 和 libILUT .1.dylib 在列表中可用，这正常吗？）

然后我在“项目>编辑项目设置>构建>其他链接器标志”中添加了以下标志：

-lil -lilu -lilut

当我尝试编译和链接项目我收到以下错误：

Ld "build/Debug/XCode OpenGL OOP Framework.app/Contents/MacOS/XCode OpenGL OOP Framework" normal i386
cd "/Users/padde/Documents/Studium/sem5/computergrafik/opengl intro/xcode projects/XCode OpenGL OOP Framework"
/Developer/usr/bin/g++-4.2 -arch i386 "-L/Users/padde/Documents/Studium/sem5/computergrafik/opengl intro/xcode projects/XCode OpenGL OOP Framework/build/Debug" "-F/Users/padde/Documents/Studium/sem5/computergrafik/opengl intro/xcode projects/XCode OpenGL OOP Framework/build/Debug" -filelist "/Users/padde/Documents/Studium/sem5/computergrafik/opengl intro/xcode projects/XCode OpenGL OOP Framework/build/XCode OpenGL OOP Framework.build/Debug/XCode OpenGL OOP Framework.build/Objects-normal/i386/XCode OpenGL OOP Framework.LinkFileList" -framework Foundation -framework AppKit -framework GLUT -framework OpenGL -framework SDL -lIL -lILU -lILUT -o "/Users/padde/Documents/Studium/sem5/computergrafik/opengl intro/xcode projects/XCode OpenGL OOP Framework/build/Debug/XCode OpenGL OOP Framework.app/Contents/MacOS/XCode OpenGL OOP Framework"

ld: warning: in /usr/local/lib/libIL.dylib, file was built for unsupported file format which is not the architecture being linked (i386)
ld: warning: in /usr/local/lib/libILU.dylib, file was built for unsupported file format which is not the architecture being linked (i386)
ld: warning: in /usr/local/lib/libILUT.dylib, file was built for unsupported file format which is not the architecture being linked (i386)
Undefined symbols:
  "_ilInit", referenced from:
      RenderEngine::initManagers()       in RenderEngine.o
  "_ilGetData", referenced from:
      TextureManager::loadTexture(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned int, unsigned int, unsigned int, bool, bool)in TextureManager.o
  "_ilBindImage", referenced from:
      TextureManager::loadTexture(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned int, unsigned int, unsigned int, bool, bool)in TextureManager.o
  "_ilLoadImage", referenced from:
      TextureManager::loadTexture(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned int, unsigned int, unsigned int, bool, bool)in TextureManager.o
  "_ilGenImages", referenced from:
      TextureManager::loadTexture(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned int, unsigned int, unsigned int, bool, bool)in TextureManager.o
  "_ilGetInteger", referenced from:
      TextureManager::loadTexture(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned int, unsigned int, unsigned int, bool, bool)in TextureManager.o
      TextureManager::loadTexture(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned int, unsigned int, unsigned int, bool, bool)in TextureManager.o
      TextureManager::loadTexture(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned int, unsigned int, unsigned int, bool, bool)in TextureManager.o
      TextureManager::loadTexture(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned int, unsigned int, unsigned int, bool, bool)in TextureManager.o
  "_ilDeleteImages", referenced from:
      TextureManager::loadTexture(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned int, unsigned int, unsigned int, bool, bool)in TextureManager.o
      TextureManager::loadTexture(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned int, unsigned int, unsigned int, bool, bool)in TextureManager.o
      TextureManager::loadTexture(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, unsigned int, unsigned int, unsigned int, bool, bool)in TextureManager.o
  "_main", referenced from:
      start in crt1.10.6.o
     (maybe you meant: _SDL_main)
ld: symbol(s) not found
collect2: ld returned 1 exit status

显然， .dylib 文件未正确构建，因此未找到符号，但我该如何使其工作？我犯了什么错误吗？有没有办法以不同的方式构建库，以便它们与我的项目一起使用，或者我可以以某种方式更改我的项目的构建架构吗？

非常感谢您的帮助！

Answer 1

我通过将酿造公式编辑为以下内容解决了该问题：

def install
  system "./configure", "--disable-debug", "--disable-dependency-tracking",
                        "--prefix=#{prefix}", "--enable-ILU", "--enable-ILUT",
                        "CFLAGS=-arch i386", "CXXFLAGS=-arch i386"
  system "make install"
end