CMakeLists.txt

# Copyright 2018 Osmocom Project
#
# This file is part of osmo-fl2k
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


########################################################################
# Project setup
########################################################################
cmake_minimum_required(VERSION 2.6)
project(libosmo-fl2k C)

include(GNUInstallDirs)

#select the release build type by default to get optimization flags
if(NOT CMAKE_BUILD_TYPE)
   set(CMAKE_BUILD_TYPE "Release")
   message(STATUS "Build type not specified: defaulting to release.")
endif(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE ${CMAKE_BUILD_TYPE} CACHE STRING "")

list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/Modules)

if(NOT LIB_INSTALL_DIR)
   set(LIB_INSTALL_DIR lib)
endif()

# Set the version information here
set(VERSION_INFO_MAJOR_VERSION 0) # increment major on api compatibility changes
set(VERSION_INFO_MINOR_VERSION 1) # increment minor on feature-level changes
set(VERSION_INFO_PATCH_VERSION git) # increment patch for bug fixes and docs
include(Version) # setup version info

########################################################################
# Compiler specific setup
########################################################################
if(CMAKE_COMPILER_IS_GNUCC AND NOT WIN32)
    ADD_DEFINITIONS(-Wall)
    ADD_DEFINITIONS(-Wextra)
    ADD_DEFINITIONS(-Wno-unused-parameter)
    ADD_DEFINITIONS(-Wno-unused)
    ADD_DEFINITIONS(-Wsign-compare)
    ADD_DEFINITIONS(-Wdeclaration-after-statement)
    #http://gcc.gnu.org/wiki/Visibility
    add_definitions(-fvisibility=hidden)
endif()

########################################################################
# Find build dependencies
########################################################################
find_package(PkgConfig)
find_package(LibUSB)
if(WIN32 AND NOT MINGW)
    set(THREADS_USE_PTHREADS_WIN32 true)
endif()
find_package(Threads)

if(NOT LIBUSB_FOUND)
    message(FATAL_ERROR "LibUSB 1.0 required to compile libosmo-fl2k")
endif()
if(NOT THREADS_FOUND)
    message(FATAL_ERROR "pthreads(-win32) required to compile libosmo-fl2k")
endif()
########################################################################
# Setup the include and linker paths
########################################################################
include_directories(
    ${CMAKE_SOURCE_DIR}/include
    ${LIBUSB_INCLUDE_DIR}
    ${THREADS_PTHREADS_INCLUDE_DIR}
)

#link_directories(
#    ...
#)

# Set component parameters
#set(INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/include CACHE INTERNAL "" FORCE)

########################################################################
# Create uninstall target
########################################################################
configure_file(
    ${CMAKE_SOURCE_DIR}/cmake/cmake_uninstall.cmake.in
    ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake
@ONLY)

add_custom_target(uninstall
    ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake
)

########################################################################
# Install udev rules
########################################################################
option(INSTALL_UDEV_RULES "Install udev rules for libosmo-fl2k" OFF)
if (INSTALL_UDEV_RULES)
    set(UDEV_RULES_PATH
        "/etc/udev/rules.d"
        CACHE STRING
        "Target directory for udev rule installation. Ensure you have permissions to write to this directory."
        )
    install (
        FILES osmo-fl2k.rules
        DESTINATION ${UDEV_RULES_PATH}
        COMPONENT "udev"
        )
else (INSTALL_UDEV_RULES)
    message (STATUS "Udev rules not being installed, install them with -DINSTALL_UDEV_RULES=ON")
endif (INSTALL_UDEV_RULES)

########################################################################
# Add subdirectories
########################################################################
add_subdirectory(include)
add_subdirectory(src)

########################################################################
# Create Pkg Config File
########################################################################
FOREACH(inc ${LIBUSB_INCLUDE_DIR})
    LIST(APPEND FL2K_PC_CFLAGS "-I${inc}")
ENDFOREACH(inc)

FOREACH(lib ${LIBUSB_LIBRARY_DIRS})
    LIST(APPEND FL2K_PC_LIBS "-L${lib}")
ENDFOREACH(lib)

# use space-separation format for the pc file
STRING(REPLACE ";" " " FL2K_PC_CFLAGS "${FL2K_PC_CFLAGS}")
STRING(REPLACE ";" " " FL2K_PC_LIBS "${FL2K_PC_LIBS}")

# unset these vars to avoid hard-coded paths to cross environment
IF(CMAKE_CROSSCOMPILING)
    UNSET(FL2K_PC_CFLAGS)
    UNSET(FL2K_PC_LIBS)
ENDIF(CMAKE_CROSSCOMPILING)

set(prefix ${CMAKE_INSTALL_PREFIX})
set(exec_prefix \${prefix})
set(libdir \${exec_prefix}/${LIB_INSTALL_DIR})
set(includedir \${prefix}/include)

CONFIGURE_FILE(
    ${CMAKE_CURRENT_SOURCE_DIR}/libosmo-fl2k.pc.in
    ${CMAKE_CURRENT_BINARY_DIR}/libosmo-fl2k.pc
@ONLY)

INSTALL(
    FILES ${CMAKE_CURRENT_BINARY_DIR}/libosmo-fl2k.pc
    DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig
)

########################################################################
# Print Summary
########################################################################
MESSAGE(STATUS "Building for version: ${VERSION} / ${LIBVER}")
MESSAGE(STATUS "Using install prefix: ${CMAKE_INSTALL_PREFIX}")