[cli] Add TI_GDB_TRIGGER environment variable (#766)

Co-authored-by: Yuanming Hu <[email protected]>

Author: archibate

python/taichi/lang/__init__.py

@@ -130,6 +130,9 @@ def boolean_config(key, name=None):
     boolean_config("verbose")
     boolean_config("fast_math")
     boolean_config("async")
+    gdb_trigger = os.environ.get("TI_GDB_TRIGGER")
+    if gdb_trigger is not None:
+        ti.set_gdb_trigger(len(gdb_trigger) and bool(int(gdb_trigger)))
     arch = os.environ.get("TI_ARCH")
     if arch is not None:
         print(f'Following TI_ARCH setting up for arch={arch}')

taichi/backends/cuda/cuda_driver.cpp

@@ -21,8 +21,10 @@ bool CUDADriver::detected() {
 CUDADriver::CUDADriver() {
 #if defined(TI_PLATFORM_LINUX)
   loader = std::make_unique<DynamicLoader>("libcuda.so");
-#else
+#elif defined(TI_PLATFORM_WINDOWS)
   loader = std::make_unique<DynamicLoader>("nvcuda.dll");
+#else
+  static_assert(false, "Taichi CUDA driver supports only Windows and Linux.");
 #endif
 
   if (detected()) {