CMakeLists.txt

# Minimum required CMake version
cmake_minimum_required(VERSION 3.5)

# Print an error message if we don't have the required version
if(${CMAKE_VERSION} VERSION_LESS 3.5)
    cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
endif()

# Define project name, version, and language
project(
  qfyaml
  VERSION 0.4.2
  LANGUAGES Fortran
)

# Most users of this software do not (should not?) have permissions to
# install in the cmake default of /usr/local (or equiv on other os's).
# Below, the default is changed to the bin subfolder, unless the user
# explicitly sets CMAKE_INSTALL_PREFIX in the cache.
if (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
    set (CMAKE_INSTALL_PREFIX "${PROJECT_SOURCE_DIR}/bin" CACHE PATH "default install path" FORCE )
endif()

# Set the path where CMake will look the build_submodule.cmake script
# and the scripts GNU.cmake and Intel.make which specify compiler info.
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${PROJECT_SOURCE_DIR}/cmake")

# Make sure we have one of the recognized compilers
include(${CMAKE_Fortran_COMPILER_ID} RESULT_VARIABLE found)
if(NOT found)
  message( FATAL_ERROR "Unrecognized Fortran compiler. Please use ifort, or gfortran.")
endif()

# Define a library for passing the compiler options to the code
add_library(BuildProperties
  INTERFACE
)

# Assign compiler options to BuildProperties
target_compile_options(BuildProperties
  INTERFACE
  $<$<STREQUAL:${CMAKE_Fortran_COMPILER_ID},Intel>:
     ${CMAKE_Fortran_FLAGS_Intel}
     $<$<CONFIG:Debug>:${CMake_Fortran_FLAGS_DEBUG_Intel}>
     $<$<CONFIG:RelWithDebInfo>:${CMAKE_Fortran_FLAGS_RELEASE_Intel}>
     $<$<CONFIG:Release>:${CMAKE_Fortran_FLAGS_RELEASE_Intel}>
  >
  $<$<STREQUAL:${CMAKE_Fortran_COMPILER_ID},GNU>:
     ${CMAKE_Fortran_FLAGS_GNU}
     $<$<CONFIG:Debug>:${CMAKE_Fortran_FLAGS_DEBUG_GNU}>
     $<$<CONFIG:RelWithDebInfo>:${CMAKE_Fortran_FLAGS_RELEASE_GNU}>
     $<$<CONFIG:Release>:${CMAKE_Fortran_FLAGS_RELEASE_GNU}>
  >
)

# Put all mod files in a build subdir called mod
set(CMAKE_Fortran_MODULE_DIRECTORY
  ${CMAKE_CURRENT_BINARY_DIR}/mod
)
target_include_directories(BuildProperties
  INTERFACE
  ${CMAKE_CURRENT_BINARY_DIR}/mod
)

# Compile code these folders
add_subdirectory(src)
add_subdirectory(test)