用的是 EasyAR SDK v2.1.0（试用Pro版本），HelloSlam官方例子
最后link的时候报错，是缺少什么库？还是设置问题？
Undefined symbols for architecture armv7:
"_sgels_", referenced from:
l2440 in libEasyARUnity.a(libEasyARUnity.a-armv7-master.o)
"_sgesv_", referenced from:
l2439 in libEasyARUnity.a(libEasyARUnity.a-armv7-master.o)
"_sgeev_", referenced from:
l2434 in libEasyARUnity.a(libEasyARUnity.a-armv7-master.o)
"_sgesvd_", referenced from:
l2423 in libEasyARUnity.a(libEasyARUnity.a-armv7-master.o)
l2424 in libEasyARUnity.a(libEasyARUnity.a-armv7-master.o)
l2430 in libEasyARUnity.a(libEasyARUnity.a-armv7-master.o)
l2436 in libEasyARUnity.a(libEasyARUnity.a-armv7-master.o)
l2438 in libEasyARUnity.a(libEasyARUnity.a-armv7-master.o)
l2451 in libEasyARUnity.a(libEasyARUnity.a-armv7-master.o)
l2460 in libEasyARUnity.a(libEasyARUnity.a-armv7-master.o)
...
"_ssyev_", referenced from:
l2414 in libEasyARUnity.a(libEasyARUnity.a-armv7-master.o)
l2417 in libEasyARUnity.a(libEasyARUnity.a-armv7-master.o)
l2420 in libEasyARUnity.a(libEasyARUnity.a-armv7-master.o)
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)