Update symbol names to include full path

When embedding CUDA code using the target_embed_sources function from cudawrappers, the symbol name now (after some recent changes) includes the path from the root of the repository. This makes the embedding compatible with edge-cases, like relative paths or nested repositories (e.g. using FetchContent. FOr this repository, the kernels are in a libtcc subdirectory, which was not taken into account in the symbol names.

libtcc/Correlator.cc

@@ -7,7 +7,7 @@
 #include <link.h>
 
 
-extern const char _binary_kernel_TCCorrelator_cu_start, _binary_kernel_TCCorrelator_cu_end;
+extern const char _binary_libtcc_kernel_TCCorrelator_cu_start, _binary_libtcc_kernel_TCCorrelator_cu_end;
 
 namespace tcc {
 
@@ -78,7 +78,7 @@ cu::Module Correlator::compileModule(unsigned nrBits,
 
   //std::for_each(options.begin(), options.end(), [] (const std::string &e) { std::cout << e << ' '; }); std::cout << std::endl;
 
-  const std::string source(&_binary_kernel_TCCorrelator_cu_start, &_binary_kernel_TCCorrelator_cu_end);
+  const std::string source(&_binary_libtcc_kernel_TCCorrelator_cu_start, &_binary_libtcc_kernel_TCCorrelator_cu_end);
   nvrtc::Program program(source, "TCCorrelator.cu");
 
   try {