[v0.30] Add support for AMD GPUs

Adds very basic support for AMD (experimental). The only install
requirement is ROCm. Unlike NVIDIA, we don't need the CUDA equivalent
(HIP) to make gpufetch work, which reduces the installation
requirements quite significantly.

Major changes:

* CMakeLists:
  - Make CUDA not compiled by default (since we now may want to target
    AMD only)
  - Set build flags on gpufetch cmake target instead of doing
    "set(CMAKE_CXX_FLAGS". This fixes a warning coming from ROCm.
  - Assumes that the ROCm CMake files are installed (should be fixed
    later)

* hsa folder: AMD support is implemented via HSA (Heterogeneous System
  Architecture) calls. Therefore, HSA is added as a new backend to
  gpufetch. We only print basic stuff for now, so we may need more
  things in the future to give full support for AMD GPUs.

NOTE: This commit will probably break AUR packages since we used to
build CUDA by default, which is no longer the case. The AUR package
should be updated and use -DENABLE_CUDA_BACKEND or -DENABLE_HSA_BACKEND
as appropriate.

src/common/printer.cpp

@@ -10,6 +10,7 @@
 
 #include "../intel/uarch.hpp"
 #include "../intel/intel.hpp"
+#include "../hsa/hsa.hpp"
 #include "../cuda/cuda.hpp"
 #include "../cuda/uarch.hpp"
 
@@ -233,6 +234,9 @@ void choose_ascii_art(struct ascii* art, struct color** cs, struct terminal* ter
   if(art->vendor == GPU_VENDOR_NVIDIA) {
     art->art = choose_ascii_art_aux(&logo_nvidia_l, &logo_nvidia, term, lf);
   }
+  else if(art->vendor == GPU_VENDOR_AMD) {
+    art->art = choose_ascii_art_aux(&logo_amd_l, &logo_amd, term, lf);
+  }
   else if(art->vendor == GPU_VENDOR_INTEL) {
     art->art = choose_ascii_art_aux(&logo_intel_l, &logo_intel, term, lf);
   }
@@ -478,6 +482,42 @@ bool print_gpufetch_cuda(struct gpu_info* gpu, STYLE s, struct color** cs, struc
 }
 #endif
 
+#ifdef BACKEND_HSA
+bool print_gpufetch_amd(struct gpu_info* gpu, STYLE s, struct color** cs, struct terminal* term) {
+  struct ascii* art = set_ascii(get_gpu_vendor(gpu), s);
+
+  if(art == NULL)
+    return false;
+
+  char* gpu_name = get_str_gpu_name(gpu);
+  char* sms = get_str_cu(gpu);
+  char* max_frequency = get_str_freq(gpu);
+
+  setAttribute(art, ATTRIBUTE_NAME, gpu_name);
+  setAttribute(art, ATTRIBUTE_FREQUENCY, max_frequency);
+  setAttribute(art, ATTRIBUTE_STREAMINGMP, sms);
+
+  const char** attribute_fields = ATTRIBUTE_FIELDS;
+  uint32_t longest_attribute = longest_attribute_length(art, attribute_fields);
+  uint32_t longest_field = longest_field_length(art, longest_attribute);
+  choose_ascii_art(art, cs, term, longest_field);
+
+  if(!ascii_fits_screen(term->w, *art->art, longest_field)) {
+    // Despite of choosing the smallest logo, the output does not fit
+    // Choose the shorter field names and recalculate the longest attr
+    attribute_fields = ATTRIBUTE_FIELDS_SHORT;
+    longest_attribute = longest_attribute_length(art, attribute_fields);
+  }
+
+  print_ascii_generic(art, longest_attribute, term->w - art->art->width, attribute_fields);
+
+  free(art->attributes);
+  free(art);
+
+  return true;
+}
+#endif
+
 struct terminal* get_terminal_size() {
   struct terminal* term = (struct terminal*) emalloc(sizeof(struct terminal));
 
@@ -517,11 +557,22 @@ bool print_gpufetch(struct gpu_info* gpu, STYLE s, struct color** cs) {
       return false;
     #endif
   }
-  else {
+  else if(gpu->vendor == GPU_VENDOR_AMD) {
+    #ifdef BACKEND_HSA
+      return print_gpufetch_amd(gpu, s, cs, term);
+    #else
+      return false;
+    #endif
+  }
+  else if(gpu->vendor == GPU_VENDOR_INTEL) {
     #ifdef BACKEND_INTEL
       return print_gpufetch_intel(gpu, s, cs, term);
     #else
       return false;
     #endif
   }
+  else {
+    printErr("Invalid GPU vendor: %d", gpu->vendor);
+    return false;
+  }
 }