# Quite analogous to the Makefile.defs file This file is used to define the
# common flags and options for the project The flags are defined as INTERFACE
# properties of the common library The flags are then used by the other
# libraries and executables

# Define the common flags and options for GCC
option(PROFILE "Enable profiling" OFF)
add_library(common_compiler_flags INTERFACE)

# Define the flags for the C compiler
if(CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64|amd64")

  if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
    target_compile_definitions(common_compiler_flags INTERFACE CC_GCC_LIKE_ASM)

    target_compile_options(
      common_compiler_flags
      INTERFACE -Wall -funroll-loops -Wcast-align
                -Werror=implicit-function-declaration -Werror=implicit-int)

    # If GCC version is greater than 4.2.0, enable the following flags
    if(CMAKE_C_COMPILER_VERSION VERSION_GREATER 4.2.0)
      target_compile_options(
        common_compiler_flags
        INTERFACE -m64 -minline-all-stringops -falign-loops -ftree-vectorize
                  -fno-strict-overflow -mtune=generic)
      target_link_options(common_compiler_flags INTERFACE -m64)
    endif()
  elseif(CMAKE_C_COMPILER_ID STREQUAL "Clang")
    target_compile_definitions(common_compiler_flags INTERFACE CC_GCC_LIKE_ASM)
    target_compile_options(common_compiler_flags INTERFACE -m64)
    target_link_options(common_compiler_flags INTERFACE -m64)
  endif()

elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "i386|i486|i586|i686")

  if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
    target_compile_definitions(common_compiler_flags INTERFACE CC_GCC_LIKE_ASM)

    target_compile_options(
      common_compiler_flags
      INTERFACE -Wall -funroll-loops -Wcast-align
                -Werror=implicit-function-declaration -Werror=implicit-int)

    # If GCC version is greater than 4.2.0, enable the following flags
    if(CMAKE_C_COMPILER_VERSION VERSION_GREATER 4.2.0)
      target_compile_options(
        common_compiler_flags
        INTERFACE -m32 -minline-all-stringops -falign-loops -ftree-vectorize
                  -fno-strict-overflow -mtune=generic)
    endif()
  elseif(CMAKE_C_COMPILER_ID STREQUAL "Clang")
    target_compile_definitions(common_compiler_flags INTERFACE CC_GCC_LIKE_ASM)
    target_compile_options(common_compiler_flags INTERFACE -m32)
    target_link_options(common_compiler_flags INTERFACE -m32)
  endif()

elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "aarch64")

  if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
    target_compile_definitions(common_compiler_flags INTERFACE CC_GCC_LIKE_ASM)

    # target_compile_options(common INTERFACE -O0 # <$<$<BOOL:${PROFILE}>:-pg> )

    # target_compile_options( common INTERFACE -marm -march=armv5t
    # -funroll-loops -fsigned-char )

    # # If GCC version is greater than 4.2.0, enable the following flags
    # if(CMAKE_C_COMPILER_VERSION VERSION_GREATER 4.2.0) target_compile_options(
    # common INTERFACE -ftree-vectorize -fno-strict-overflow ) endif()

  endif()
endif()