[master][CMake]Remove extra spaces between 'if'

CMakeLists.txt

@@ -16,11 +16,11 @@ set(CMAKE_CXX_EXTENSIONS ON)  # GNU extensions used by src/operator/random/shuff
 # some compilers claim they support c++17 without actually implementing crucial
 # parts of the standard leading to hard to understand compilation errors.
 if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
-  if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.0)
+  if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.0)
     message(FATAL_ERROR "MXNet 2 requires a C++17 compatible compiler. Please update to GCC version 7 or newer.")
   endif()
 elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
-  if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 6.0)
+  if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 6.0)
     message(FATAL_ERROR "MXNet 2 requires a C++17 compatible compiler. Please update to Clang version 6 or newer.")
   endif()
 endif()
@@ -116,7 +116,7 @@ if(USE_CUDA)
   cmake_minimum_required(VERSION 3.13.2)  # CUDA 10 (Turing) detection available starting 3.13.2
   include(CheckLanguage)
   check_language(CUDA)
-  if (NOT CMAKE_CUDA_COMPILER AND UNIX AND EXISTS "/usr/local/cuda/bin/nvcc")
+  if(NOT CMAKE_CUDA_COMPILER AND UNIX AND EXISTS "/usr/local/cuda/bin/nvcc")
     set(ENV{CUDACXX} "/usr/local/cuda/bin/nvcc")
     message(WARNING "CMAKE_CUDA_COMPILER guessed: " $ENV{CUDACXX} "\n"
       "Please fix your cuda installation: https://docs.nvidia.com/cuda/cuda-installation-guide-linux/index.html#mandatory-post")
@@ -562,7 +562,7 @@ if(USE_OPERATOR_TUNING AND USE_OPENMP)
   add_definitions(-DMXNET_USE_OPERATOR_TUNING=1)
 endif()
 
-if (NOT (EXTRA_OPERATORS STREQUAL ""))
+if(NOT (EXTRA_OPERATORS STREQUAL ""))
     mxnet_source_group("Extra"   GLOB_RECURSE "${EXTRA_OPERATORS}/*.cc")
     mxnet_source_group("Extra\\Cuda"   GLOB_RECURSE "${EXTRA_OPERATORS}/*.cu")
     FILE(GLOB_RECURSE EXTRA_SRC "${EXTRA_OPERATORS}/*.cc")
@@ -818,7 +818,7 @@ if(USE_CUDA)
   target_include_directories(customop_gpu_lib PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include/mxnet ${CMAKE_CURRENT_SOURCE_DIR}/example/extensions/lib_custom_op)
 endif()
 if(UNIX)
-  if (USE_CUDA)
+  if(USE_CUDA)
     target_compile_options(customop_gpu_lib PUBLIC -shared)
   endif()
 elseif(MSVC)
@@ -948,11 +948,11 @@ install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/3rdparty/dmlc-core/include/ DESTIN
 install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/3rdparty/mshadow/mshadow/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/mshadow)
 install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/mxnet/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/mxnet)
 install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/3rdparty/tvm/nnvm/include/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
-if (INSTALL_EXAMPLES)
+if(INSTALL_EXAMPLES)
   install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/example  DESTINATION ${CMAKE_INSTALL_DATADIR}/${PROJECT_NAME})
 endif()
 
-if (USE_SIGNAL_HANDLER)
+if(USE_SIGNAL_HANDLER)
     add_definitions(-DMXNET_USE_SIGNAL_HANDLER=1)
 endif()
 

cmake/Utils.cmake

@@ -370,7 +370,7 @@ endfunction()
 
 function(assign_source_group group)
     foreach(_source IN ITEMS ${ARGN})
-        if (IS_ABSOLUTE "${_source}")
+        if(IS_ABSOLUTE "${_source}")
             file(RELATIVE_PATH _source_rel "${CMAKE_CURRENT_SOURCE_DIR}" "${_source}")
         else()
             set(_source_rel "${_source}")

tests/CMakeLists.txt

@@ -25,7 +25,7 @@ if(GTEST_FOUND AND NOT MSVC)
   include_directories(${GTEST_INCLUDE_DIR})
   include_directories(cpp/include)
 
-  if (NOT PRIVATE_RUNTIME_DIR)
+  if(NOT PRIVATE_RUNTIME_DIR)
    set(PRIVATE_RUNTIME_DIR ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
   endif()