fix casing of check_cxx_compiler_flag

Summary: The CMake function `check_cxx_compiler_flag` is snake-case rather than uppercase.

Reviewed By: vitaut

Differential Revision: D26573998

fbshipit-source-id: 91d5e2cea933d35967d013b2344e50f52fb6ba77

CMake/FollyConfigChecks.cmake

@@ -29,7 +29,7 @@ endif()
 if(NOT CMAKE_SYSTEM_NAME STREQUAL "Windows")
   # clang only rejects unknown warning flags if -Werror=unknown-warning-option
   # is also specified.
-  CHECK_CXX_COMPILER_FLAG(
+  check_cxx_compiler_flag(
     -Werror=unknown-warning-option
     COMPILER_HAS_UNKNOWN_WARNING_OPTION)
   if (COMPILER_HAS_UNKNOWN_WARNING_OPTION)
@@ -37,8 +37,8 @@ if(NOT CMAKE_SYSTEM_NAME STREQUAL "Windows")
       "${CMAKE_REQUIRED_FLAGS} -Werror=unknown-warning-option")
   endif()
 
-  CHECK_CXX_COMPILER_FLAG(-Wshadow-local COMPILER_HAS_W_SHADOW_LOCAL)
-  CHECK_CXX_COMPILER_FLAG(
+  check_cxx_compiler_flag(-Wshadow-local COMPILER_HAS_W_SHADOW_LOCAL)
+  check_cxx_compiler_flag(
     -Wshadow-compatible-local
     COMPILER_HAS_W_SHADOW_COMPATIBLE_LOCAL)
   if (COMPILER_HAS_W_SHADOW_LOCAL AND COMPILER_HAS_W_SHADOW_COMPATIBLE_LOCAL)
@@ -46,31 +46,31 @@ if(NOT CMAKE_SYSTEM_NAME STREQUAL "Windows")
     list(APPEND FOLLY_CXX_FLAGS -Wshadow-compatible-local)
   endif()
 
-  CHECK_CXX_COMPILER_FLAG(-Wnoexcept-type COMPILER_HAS_W_NOEXCEPT_TYPE)
+  check_cxx_compiler_flag(-Wnoexcept-type COMPILER_HAS_W_NOEXCEPT_TYPE)
   if (COMPILER_HAS_W_NOEXCEPT_TYPE)
     list(APPEND FOLLY_CXX_FLAGS -Wno-noexcept-type)
   endif()
 
-  CHECK_CXX_COMPILER_FLAG(
+  check_cxx_compiler_flag(
       -Wnullability-completeness
       COMPILER_HAS_W_NULLABILITY_COMPLETENESS)
   if (COMPILER_HAS_W_NULLABILITY_COMPLETENESS)
     list(APPEND FOLLY_CXX_FLAGS -Wno-nullability-completeness)
   endif()
 
-  CHECK_CXX_COMPILER_FLAG(
+  check_cxx_compiler_flag(
       -Winconsistent-missing-override
       COMPILER_HAS_W_INCONSISTENT_MISSING_OVERRIDE)
   if (COMPILER_HAS_W_INCONSISTENT_MISSING_OVERRIDE)
     list(APPEND FOLLY_CXX_FLAGS -Wno-inconsistent-missing-override)
   endif()
 
-  CHECK_CXX_COMPILER_FLAG(-faligned-new COMPILER_HAS_F_ALIGNED_NEW)
+  check_cxx_compiler_flag(-faligned-new COMPILER_HAS_F_ALIGNED_NEW)
   if (COMPILER_HAS_F_ALIGNED_NEW)
     list(APPEND FOLLY_CXX_FLAGS -faligned-new)
   endif()
 
-  CHECK_CXX_COMPILER_FLAG(-fopenmp COMPILER_HAS_F_OPENMP)
+  check_cxx_compiler_flag(-fopenmp COMPILER_HAS_F_OPENMP)
   if (COMPILER_HAS_F_OPENMP)
       list(APPEND FOLLY_CXX_FLAGS -fopenmp)
   endif()

CMakeLists.txt

@@ -315,7 +315,7 @@ set(PCLMUL_FILES
   ${FOLLY_DIR}/hash/detail/Crc32CombineDetail.cpp
   ${FOLLY_DIR}/hash/detail/Crc32cDetail.cpp
 )
-CHECK_CXX_COMPILER_FLAG(-mpclmul COMPILER_HAS_M_PCLMUL)
+check_cxx_compiler_flag(-mpclmul COMPILER_HAS_M_PCLMUL)
 if (COMPILER_HAS_M_PCLMUL)
   message(
     STATUS