minor fix build commands

README.md

@@ -108,7 +108,7 @@ target_link_libraries(hello-kokkos-fft PUBLIC Kokkos::kokkos KokkosFFT::fft)
 
 For compilation, we basically rely on the CMake options for Kokkos. For example, the compile options for A100 GPU is as follows.
 ```
-cmake -B build
+cmake -B build \
       -DCMAKE_CXX_COMPILER=g++ \
       -DCMAKE_BUILD_TYPE=Release \
       -DKokkos_ENABLE_CUDA=ON \

docs/intro/building.rst

@@ -28,12 +28,12 @@ Let's assume Kokkos is installed under ``<path/to/kokkos>`` with ``OpenMP`` back
 
     export KOKKOSFFT_INSTALL_PREFIX=<path/to/kokkos-fft>
 
-    mkdir build_KokkosFFT && cd build_KokkosFFT
-    cmake -DCMAKE_CXX_COMPILER=<your c++ compiler> \
+    cmake -B build_KokkosFFT \
+          -DCMAKE_CXX_COMPILER=<your c++ compiler> \
           -DCMAKE_PREFIX_PATH=<path/to/kokkos> \
-          -DCMAKE_INSTALL_PREFIX=${KOKKOSFFT_INSTALL_PREFIX} ..
-    cmake --build . -j 8
-    cmake --install .
+          -DCMAKE_INSTALL_PREFIX=${KOKKOSFFT_INSTALL_PREFIX}
+    cmake --build build_KokkosFFT -j 8
+    cmake --install build_KokkosFFT
 
 Here is an example to use KokkosFFT in the following CMake project.
 
@@ -62,10 +62,10 @@ The code can be built as
 
 .. code-block:: bash
 
-    mkdir build && cd build
-    cmake -DCMAKE_CXX_COMPILER=<your c++ compiler> \
-          -DCMAKE_PREFIX_PATH="<path/to/kokkos>;<path/to/kokkos-fft>" ..
-    cmake --build . -j 8
+    cmake -B build \
+          -DCMAKE_CXX_COMPILER=<your c++ compiler> \
+          -DCMAKE_PREFIX_PATH="<path/to/kokkos>;<path/to/kokkos-fft>"
+    cmake --build build -j 8
 
 CMake options
 -------------

docs/intro/quick_start.rst

@@ -63,12 +63,12 @@ For compilation, we basically rely on the CMake options for Kokkos. For example,
 
 .. code-block:: bash
 
-    mkdir build && cd build
-    cmake -DCMAKE_CXX_COMPILER=g++ \
+    cmake -B build \
+          -DCMAKE_CXX_COMPILER=g++ \
           -DCMAKE_BUILD_TYPE=Release \
           -DKokkos_ENABLE_CUDA=ON \
-          -DKokkos_ARCH_AMPERE80=ON ..
-    cmake --build . -j 8
+          -DKokkos_ARCH_AMPERE80=ON
+    cmake --build build -j 8
 
 This way, all the functionalities are executed on A100 GPUs.