GraphicsMagick，架构x86_64的未定义符号

Question

我想在Xcode4中安装GraphicsMagick，当我执行命令'make'时出现此错误。

/usr/bin/ranlib: file: magick/.libs/libGraphicsMagick.a(magick_libGraphicsMagick_la-module.o) has no symbols 
/usr/bin/ranlib: file: magick/.libs/libGraphicsMagick.a(magick_libGraphicsMagick_la-PreRvIcccm.o) has no symbols 
libtool: link: ranlib magick/.libs/libGraphicsMagick.a 
ranlib: file: magick/.libs/libGraphicsMagick.a(magick_libGraphicsMagick_la-module.o) has no symbols 
ranlib: file: magick/.libs/libGraphicsMagick.a(magick_libGraphicsMagick_la-PreRvIcccm.o) has no symbols 


Undefined symbols for architecture x86_64: 
    "___builtin_object_size", referenced from: 
     _BlurImageScanlines.omp_fn.6 in libGraphicsMagick.a(magick_libGraphicsMagick_la-effect.o) 
     _XShearImage.omp_fn.0 in libGraphicsMagick.a(magick_libGraphicsMagick_la-shear.o) 
     _YShearImage.omp_fn.1 in libGraphicsMagick.a(magick_libGraphicsMagick_la-shear.o) 
ld: symbol(s) not found for architecture x86_64 
collect2: ld returned 1 exit status 
make[1]: *** [utilities/gm] Error 1 
make: *** [install] Error 2 

Answer 1

您可以在这里找到解决方案。

http://sourceforge.net/projects/graphicsmagick/forums/forum/250738/topic/5221775

Answer 2

GraphicsMagick工具将不会在OS编译X 10.7（狮子）或10.8（山狮）与默认LLVM GCC/G ++编译器。解决方法是使用锵编译器来代替：

./configure CC=clang [...other config options...] 

这也是一个好主意，用编译后make check运行单元测试只是为了安全起见。

这个技巧对我有用，希望它有帮助。