Resolve merge conflict in build.sh

Author: sleeepyjack

ci/build.sh

@@ -72,9 +72,9 @@ function usage {
     echo "  --prefix: Build directory prefix (Defaults to <repo_root>/build)"
     echo "  -i/--infix: Build directory infix (Defaults to local)"
     echo "  -d/--debug: Debug build"
-    echo "  -p/--parallel: Build parallelism (Defaults to $PARALLEL_LEVEL if set, otherwise the system's number of CPU cores)"
-    echo "  --cuda: CUDA compiler (Defaults to $CUDACXX if set, otherwise nvcc)"
-    echo "  --cxx: Host compiler (Defaults to $CXX if set, otherwise g++)"
+    echo "  -p/--parallel: Build parallelism (Defaults to \$PARALLEL_LEVEL if set, otherwise the system's number of CPU cores)"
+    echo "  --cuda: CUDA compiler (Defaults to \$CUDACXX if set, otherwise nvcc)"
+    echo "  --cxx: Host compiler (Defaults to \$CXX if set, otherwise g++)"
     echo "  --arch: Target CUDA arches, e.g. \"60-real;70;80-virtual\" (Defaults to the system's native GPU archs)"
     echo "  --std: CUDA/C++ standard (Defaults to 17)"
     echo "  -v/-verbose/--verbose: Enable shell echo for debugging"