diff --git a/.github/workflows/dispatch-build-and-test.yml b/.github/workflows/dispatch-build-and-test.yml
index b6c364b1b..66ab0d136 100644
--- a/.github/workflows/dispatch-build-and-test.yml
+++ b/.github/workflows/dispatch-build-and-test.yml
@@ -35,7 +35,7 @@ jobs:
     with:
       cpu: ${{ matrix.cpu }}
       test_name: ${{matrix.compiler.name}}${{matrix.compiler.version}}/C++${{matrix.std}}
-      build_script: "./ci/build.sh -cxx ${{matrix.compiler.exe}} -std ${{matrix.std}} -arch ${{matrix.gpu_build_archs}} -i ${{matrix.compiler.name}}${{matrix.compiler.version}}-cuda${{matrix.cuda}}"
-      test_script:  "./ci/test.sh  -cxx ${{matrix.compiler.exe}} -std ${{matrix.std}} -arch ${{matrix.gpu_build_archs}} -i ${{matrix.compiler.name}}${{matrix.compiler.version}}-cuda${{matrix.cuda}}"
+      build_script: "./ci/build.sh --cxx ${{matrix.compiler.exe}} --std ${{matrix.std}} -arch ${{matrix.gpu_build_archs}} -i ${{matrix.compiler.name}}${{matrix.compiler.version}}-cuda${{matrix.cuda}}"
+      test_script:  "./ci/test.sh  --cxx ${{matrix.compiler.exe}} --std ${{matrix.std}} -arch ${{matrix.gpu_build_archs}} -i ${{matrix.compiler.name}}${{matrix.compiler.version}}-cuda${{matrix.cuda}}"
       container_image: rapidsai/devcontainers:${{inputs.devcontainer_version}}-cpp-${{matrix.compiler.name}}${{matrix.compiler.version}}-cuda${{matrix.cuda}}-${{matrix.os}}
       run_tests: ${{ contains(matrix.jobs, 'test') && !contains(github.event.head_commit.message, 'skip-tests') }}
diff --git a/ci/build.sh b/ci/build.sh
index d6d449fcf..81176ebda 100755
--- a/ci/build.sh
+++ b/ci/build.sh
@@ -37,20 +37,20 @@ function usage {
     echo
     echo "Options:"
     echo "  -v/--verbose: enable shell echo for debugging"
-    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 "  -c/-clean: Clean (re-)build"
-    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 "  -p/-par: Build parallelism (Defaults to \$PARALLEL_LEVEL if set, otherwise the system's number of CPU cores)"
+    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 "  -c/--clean: Clean (re-)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 "  --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
     echo "Examples:"
     echo "  $ PARALLEL_LEVEL=8 CXX=g++-9 $0"
-    echo "  $ $0 -cxx g++-9 -par 8 -i my_build"
-    echo "  $ $0 -cxx g++-8 -std 14 -arch 80-real -v -cuda /usr/local/bin/nvcc"
+    echo "  $ $0 --cxx g++-9 -p 8 -i my_build --debug"
+    echo "  $ $0 --cxx g++-8 --prefix /usr/local --arch 80-real -v --cuda /usr/local/bin/nvcc"
     exit 1
 }
 
@@ -63,15 +63,15 @@ echo "Args: ${args[@]}"
 while [ "${#args[@]}" -ne 0 ]; do
     case "${args[0]}" in
     -v | --verbose) VERBOSE=1; args=("${args[@]:1}");;
-    -prefix) BUILD_PREFIX="${args[1]}"; args=("${args[@]:2}");;
-    -i | -infix) BUILD_INFIX="${args[1]}"; args=("${args[@]:2}");;
-    -d | -debug) DEBUG_BUILD=1; args=("${args[@]:1}");;
-    -c | -clean) CLEAN_BUILD=1; args=("${args[@]:1}");;
-    -cuda) CUDA_COMPILER="${args[1]}"; args=("${args[@]:2}");;
-    -cxx)  HOST_COMPILER="${args[1]}"; args=("${args[@]:2}");;
-    -arch) CUDA_ARCHS="${args[1]}";    args=("${args[@]:2}");;
-    -std)  CXX_STANDARD="${args[1]}";  args=("${args[@]:2}");;
-    -p | -par)  PARALLEL_LEVEL="${args[1]}";  args=("${args[@]:2}");;
+    --prefix) BUILD_PREFIX="${args[1]}"; args=("${args[@]:2}");;
+    -i | --infix) BUILD_INFIX="${args[1]}"; args=("${args[@]:2}");;
+    -d | --debug) DEBUG_BUILD=1; args=("${args[@]:1}");;
+    -c | --clean) CLEAN_BUILD=1; args=("${args[@]:1}");;
+    -p | --parallel)  PARALLEL_LEVEL="${args[1]}";  args=("${args[@]:2}");;
+    --cuda) CUDA_COMPILER="${args[1]}"; args=("${args[@]:2}");;
+    --cxx)  HOST_COMPILER="${args[1]}"; args=("${args[@]:2}");;
+    --arch) CUDA_ARCHS="${args[1]}";    args=("${args[@]:2}");;
+    --std)  CXX_STANDARD="${args[1]}";  args=("${args[@]:2}");;
     -h | -help | --help) usage ;;
     *) echo "Unrecognized option: ${args[0]}"; usage ;;
     esac
@@ -96,7 +96,7 @@ if [ "$BUILD_INFIX" = "latest" ] || [ -z "$BUILD_INFIX" ]; then
 fi
 
 # Trigger clean (re-)build
-if [ "${CLEAN_BUILD:-0}" -eq 1 ]; then
+if [ "$CLEAN_BUILD" -eq 1 ]; then
     rm -rf BUILD_DIR
 fi