# Map the compiler to the internal compiler flag/option customization
# COMPILER is defined upon return
#
# Note: vendor compilers can be just rebranded customized Clang compiler.
# It requires more recent CMake to handle it properly. We need to handle such cases for older CMake.

if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
  set(COMPILER GNU)
elseif(CMAKE_CXX_COMPILER_ID MATCHES "XL")
  set(COMPILER IBM)
elseif(CMAKE_CXX_COMPILER_ID MATCHES "Intel")
  set(COMPILER Intel)
elseif(CMAKE_CXX_COMPILER_ID MATCHES "PGI" OR CMAKE_CXX_COMPILER_ID MATCHES "NVHPC")
  set(COMPILER NVHPC)
elseif(CMAKE_CXX_COMPILER_ID MATCHES "Cray")
  set(COMPILER Cray)
elseif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
  set(COMPILER Clang)
else()
  message("${CMAKE_CXX_COMPILER_ID}")
  message(WARNING "Unknown C/C++ compiler ${CMAKE_CXX_COMPILER_ID}, default flags will be used")
endif()
message(STATUS "C++ Compiler is identified by QMCPACK as : ${COMPILER}")

#------------------------------------
# Include compiler-specific cmake file
#------------------------------------
if(COMPILER MATCHES "IBM")
  include(IBMCompilers)
elseif(COMPILER MATCHES "Intel")
  include(IntelCompilers)
elseif(COMPILER MATCHES "GNU")
  include(GNUCompilers)
elseif(COMPILER MATCHES "Clang")
  include(ClangCompilers)
elseif(COMPILER MATCHES "NVHPC")
  include(NVHPCCompilers)
else()
  message(WARNING "No default file for compiler (${COMPILER})")
endif()