Popcode was created by Extra Reality Limited and has no connection to PopCap® Games, Inc.
官网：http://www.popcode.info/
日期: 2011 年 11 月 16 日
QCAR
高通放出的SDK，支持Android和iOS，最重要的免费，可以用于商业用途。
Qualcomm's augmented reality (AR) SDK empowers developers to create compelling mobile AR experiences based on Qualcomm's industry leading R&D.
官网：https://developer.qualcomm.com/develop/mobile-technologies/augmented-reality
missing required architecture i386 in file
问题描述：今天研究QCAR的iPhone版本，下载Demo后编译报错，如下：
ld: warning: ignoring file ../../build/lib/arm/libQCAR.a, missing required architecture i386 in file
Undefined symbols for architecture i386:
"QCAR::deinit()", referenced from:
-[EAGLView onDestroy] in EAGLView.o
"QCAR::onResume()", referenced from:
-[EAGLView onResume] in EAGLView.o
-[EAGLView updateApplicationStatus:] in EAGLView.o
"QCAR::onPause()", referenced from:
-[EAGLView onPause] in EAGLView.o
"QCAR::setHint(unsigned int, int)", referenced from:
-[EAGLView updateApplicationStatus:] in EAGLView.o
"QCAR::onSurfaceCreated()", referenced from:
-[EAGLView initApplication] in EAGLView.o
"QCAR::onSurfaceChanged(int, int)", referenced from:
-[EAGLView initApplication] in EAGLView.o
"QCAR::setInitParameters(int)", referenced from:
-[EAGLView initQCAR] in EAGLView.o
"QCAR::init()", referenced from:
-[EAGLView initQCAR] in EAGLView.o
"QCAR::Tracker::getInstance()", referenced from:
-[EAGLView loadTracker] in EAGLView.o
-[EAGLView startCamera] in EAGLView.o
-[EAGLView stopCamera] in EAGLView.o
"QCAR::CameraDevice::getInstance()", referenced from:
-[EAGLView startCamera] in EAGLView.o
-[EAGLView stopCamera] in EAGLView.o
-[EAGLView configureVideoBackground] in EAGLView.o
-[OverlayView actionSheet:clickedButtonAtIndex:] in OverlayView.o
"QCAR::Tool::getProjectionGL(QCAR::CameraCalibration const&, float, float)", referenced from:
-[EAGLView startCamera] in EAGLView.o
"QCAR::Renderer::getInstance()", referenced from:
-[EAGLView configureVideoBackground] in EAGLView.o
-[EAGLView renderFrameQCAR] in EAGLView.o
"QCAR::requiresAlpha()", referenced from:
-[EAGLView initRendering] in EAGLView.o
"QCAR::State::~State()", referenced from:
-[EAGLView renderFrameQCAR] in EAGLView.o
"QCAR::State::getNumActiveTrackables() const", referenced from:
-[EAGLView renderFrameQCAR] in EAGLView.o
"QCAR::State::getActiveTrackable(int) const", referenced from:
-[EAGLView renderFrameQCAR] in EAGLView.o
"QCAR::Tool::convertPose2GLMatrix(QCAR::Matrix34F const&)", referenced from:
-[EAGLView renderFrameQCAR] in EAGLView.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
问题分析：开始以为是没有找到库，重新引用库，无效。后查Google，要删除掉Targets-Build Settings-Library Search Paths，照做，无效。最后找到以下这段：
|
It seems the library is built for phone deployment (ARM) but you are trying to link it to a simulator executable (x86). This won't work. Rebuild the library for the simulator.
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问题解决：切换成Device编译，搞定。