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### setup project ###
cmake_minimum_required(VERSION 3.17.3) # 3.17 > for Python3_SOABI
set(CMAKE_CXX_STANDARD_REQUIRED ON)
project(fibby
VERSION 1.0
DESCRIPTION "FIB module"
LANGUAGES C Fortran
)
# Safety net
if(PROJECT_SOURCE_DIR STREQUAL PROJECT_BINARY_DIR)
message(
FATAL_ERROR
"In-source builds not allowed. Please make a new directory (called a build directory) and run CMake from there.\n"
)
endif()
# Grab Python
find_package(Python3 3.9 REQUIRED
COMPONENTS Interpreter Development NumPy)
# Grab the variables from a local Python installation
# F2PY headers
execute_process(
COMMAND "${Python3_EXECUTABLE}"
-c "import numpy.f2py; print(numpy.f2py.get_include())"
OUTPUT_VARIABLE F2PY_INCLUDE_DIR
OUTPUT_STRIP_TRAILING_WHITESPACE
)
# Project scope; consider using target_include_directories instead
include_directories(
BEFORE
${Python3_INCLUDE_DIRS}
${Python3_NumPy_INCLUDE_DIRS}
${F2PY_INCLUDE_DIR}
)
message(STATUS ${Python3_INCLUDE_DIRS})
message(STATUS ${F2PY_INCLUDE_DIR})
message(STATUS ${Python3_NumPy_INCLUDE_DIRS})
# Vars
set(f2py_module_name "fibby")
set(fortran_src_file "${CMAKE_SOURCE_DIR}/fib1.f")
set(f2py_module_c "${f2py_module_name}module.c")
set(generated_module_file "${f2py_module_name}${Python3_SOABI}")
# Generate sources
add_custom_target(
genpyf
DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/${f2py_module_c}"
)
add_custom_command(
OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${f2py_module_c}"
COMMAND ${Python3_EXECUTABLE} -m "numpy.f2py"
"${fortran_src_file}"
-m "fibby"
--lower # Important
DEPENDS fib1.f # Fortran source
)
# Set up target
add_library(${CMAKE_PROJECT_NAME} SHARED
"${CMAKE_CURRENT_BINARY_DIR}/${f2py_module_c}" # Generated
"${F2PY_INCLUDE_DIR}/fortranobject.c" # From NumPy
"${fortran_src_file}" # Fortran source(s)
)
# Depend on sources
add_dependencies(${CMAKE_PROJECT_NAME} genpyf)
set_target_properties(
${CMAKE_PROJECT_NAME}
PROPERTIES
PREFIX ""
OUTPUT_NAME "${CMAKE_PROJECT_NAME}"
LINKER_LANGUAGE C
)
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