我已经使用MacOS的二进制安装程序安装了ArrayFire library,它将库放入/usr/local/lib
。我可以编译和运行简单的例子,例如
#include <arrayfire.h>
#include <stdio.h>
int main() {
unsigned int count;
af_get_backend_count(&count);
printf("backends: %d\n", count);
return 0;
}
给出
$ /usr/local/clang4/bin/clang -laf -o minimal minimal.c
$ ./minimal
backends: 2
现在我想在R中做同样的事情。我有
#include <arrayfire.h>
#include <Rinternals.h>
SEXP count_backends() {
unsigned int count;
af_get_backend_count(&count);
Rprintf("backends: %d\n", count);
return R_NilValue;
}
我用
编译$ PKG_LIBS=-laf R CMD SHLIB minimal.c
/usr/local/clang4/bin/clang -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG -I/usr/local/include -fPIC -Wall -g -O2 -c minimal.c -o minimal.o
/usr/local/clang4/bin/clang -dynamiclib -Wl,-headerpad_max_install_names -undefined dynamic_lookup -single_module -multiply_defined suppress -L/Library/Frameworks/R.framework/Resources/lib -L/usr/local/clang4/lib -o minimal.so minimal.o -laf -F/Library/Frameworks/R.framework/.. -framework R -Wl,-framework -Wl,CoreFoundation
但是,我无法加载生成的库。错误讯息:
> dyn.load("minimal.so")
Error in dyn.load("minimal.so") :
unable to load shared object '/Users/ralf/Documents/af-simple/minimalR/minimal.so':
dlopen(/Users/ralf/Documents/af-simple/minimalR/minimal.so, 6): Library not loaded: @rpath/libaf.3.dylib
Referenced from: /Users/ralf/Documents/af-simple/minimalR/minimal.so
Reason: image not found
为什么在构建二进制文件时没有出现此类问题时找不到libaf
?如何加载库?
注意:
-rpath /usr/local/lib
添加到PKG_LIBS
找到了一种解决方法。如果这是唯一的解决方案,我会对由此产生的问题提出后续问题。LD_LIBRARY_PATH
或DYLD_LIBRARY_PATH
设置为/usr/local/lib
无效。