# Copyright 2010-2011 Free Software Foundation, Inc.
# 
# This file is part of GNU Radio
# 
# GNU Radio 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 3, or (at your option)
# any later version.
# 
# GNU Radio 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 GNU Radio; see the file COPYING.  If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street,
# Boston, MA 02110-1301, USA.

########################################################################
if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR})
    message(FATAL_ERROR "Prevented in-tree build. This is bad practice.")
endif(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR})

########################################################################
# Project setup
########################################################################
cmake_minimum_required(VERSION 2.6)
project(gnuradio CXX C)
enable_testing()

#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)

# Set the version information here
set(VERSION_INFO_MAJOR_VERSION 3)
set(VERSION_INFO_API_COMPAT    6)
set(VERSION_INFO_MINOR_VERSION git)
set(VERSION_INFO_MAINT_VERSION 0)
include(GrVersion) #setup version info

# Append -O2 optimization flag for Debug builds
SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -O2")
SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -O2")

########################################################################
# Import executables from a native build (for cross compiling)
# http://www.vtk.org/Wiki/CMake_Cross_Compiling#Using_executables_in_the_build_created_during_the_build
########################################################################
if(IMPORT_EXECUTABLES)
    include(${IMPORT_EXECUTABLES})
endif(IMPORT_EXECUTABLES)

#set file that the native build will fill with exports
set(EXPORT_FILE ${CMAKE_BINARY_DIR}/ImportExecutables.cmake)
file(WRITE ${EXPORT_FILE}) #blank the file (subdirs will append)

########################################################################
# Compiler specific setup
########################################################################
include(GrMiscUtils) #compiler flag check

if(CMAKE_COMPILER_IS_GNUCXX AND NOT WIN32)
    #http://gcc.gnu.org/wiki/Visibility
    GR_ADD_CXX_COMPILER_FLAG_IF_AVAILABLE(-fvisibility=hidden HAVE_VISIBILITY_HIDDEN)
endif()

if(CMAKE_COMPILER_IS_GNUCXX)
    GR_ADD_CXX_COMPILER_FLAG_IF_AVAILABLE(-Wsign-compare HAVE_WARN_SIGN_COMPARE)
    GR_ADD_CXX_COMPILER_FLAG_IF_AVAILABLE(-Wall HAVE_WARN_ALL)
    GR_ADD_CXX_COMPILER_FLAG_IF_AVAILABLE(-Wno-uninitialized HAVE_WARN_NO_UNINITIALIZED)
endif(CMAKE_COMPILER_IS_GNUCXX)

if(MSVC)
    include_directories(${CMAKE_SOURCE_DIR}/cmake/msvc) #missing headers
    add_definitions(-D_WIN32_WINNT=0x0501) #minimum version required is windows xp
    add_definitions(-DNOMINMAX) #disables stupidity and enables std::min and std::max
    add_definitions( #stop all kinds of compatibility warnings
        -D_SCL_SECURE_NO_WARNINGS
        -D_CRT_SECURE_NO_WARNINGS
        -D_CRT_SECURE_NO_DEPRECATE
        -D_CRT_NONSTDC_NO_DEPRECATE
    )
    add_definitions(-DHAVE_CONFIG_H)
    add_definitions(/MP) #build with multiple processors
endif(MSVC)

########################################################################
# Install directories
########################################################################
include(GrPlatform) #define LIB_SUFFIX
set(GR_RUNTIME_DIR      bin)
set(GR_LIBRARY_DIR      lib${LIB_SUFFIX})
set(GR_INCLUDE_DIR      include)
set(GR_DATA_DIR         share)
set(GR_PKG_DATA_DIR     ${GR_DATA_DIR}/${CMAKE_PROJECT_NAME})
set(GR_DOC_DIR          ${GR_DATA_DIR}/doc)
set(GR_PKG_DOC_DIR      ${GR_DOC_DIR}/${CMAKE_PROJECT_NAME}-${DOCVER})
set(GR_CONF_DIR         etc)
set(GR_PKG_CONF_DIR     ${GR_CONF_DIR}/${CMAKE_PROJECT_NAME}/conf.d)
set(GR_LIBEXEC_DIR      libexec)
set(GR_PKG_LIBEXEC_DIR  ${GR_LIBEXEC_DIR}/${CMAKE_PROJECT_NAME})
set(GRC_BLOCKS_DIR      ${GR_PKG_DATA_DIR}/grc/blocks)

########################################################################
# Variables replaced when configuring the package config files
########################################################################
file(TO_NATIVE_PATH "${CMAKE_INSTALL_PREFIX}"           prefix)
file(TO_NATIVE_PATH "\${prefix}"                        exec_prefix)
file(TO_NATIVE_PATH "\${exec_prefix}/${GR_LIBRARY_DIR}" libdir)
file(TO_NATIVE_PATH "\${prefix}/${GR_INCLUDE_DIR}"      includedir)

########################################################################
# 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
)

########################################################################
# Enable python component
########################################################################
find_package(PythonLibs)
find_package(SWIG)

if(SWIG_FOUND)
    message(STATUS "Minimum SWIG version required is 1.3.31")
    set(SWIG_VERSION_CHECK FALSE)
    if("${SWIG_VERSION}" VERSION_GREATER "1.3.30")
        set(SWIG_VERSION_CHECK TRUE)
    endif()
endif(SWIG_FOUND)

include(GrComponent)
GR_REGISTER_COMPONENT("python-support" ENABLE_PYTHON
    PYTHONLIBS_FOUND
    SWIG_FOUND
    SWIG_VERSION_CHECK
)

find_package(CppUnit)
GR_REGISTER_COMPONENT("testing-support" ENABLE_TESTING
    CPPUNIT_FOUND
)

########################################################################
# Add optional dlls specified in DLL_PATHS
########################################################################
foreach(path ${DLL_PATHS})
    file(GLOB _dlls "${path}/*.dll")
    list(APPEND ALL_DLL_FILES ${_dlls})
endforeach(path)
if(DEFINED ALL_DLL_FILES)
    include(GrPackage)
    CPACK_COMPONENT("extra_dlls"
        DISPLAY_NAME "Extra DLLs"
        DESCRIPTION  "Extra DLLs for runtime dependency requirements"
    )
    message(STATUS "")
    message(STATUS "Including the following dlls into the install:")
    foreach(_dll ${ALL_DLL_FILES})
        message(STATUS "  ${_dll}")
    endforeach(_dll)
    install(FILES ${ALL_DLL_FILES} DESTINATION ${GR_RUNTIME_DIR} COMPONENT "extra_dlls")
endif()

########################################################################
# Setup volk as a subproject
########################################################################
include(GrComponent)
GR_REGISTER_COMPONENT("volk" ENABLE_VOLK)

set(VOLK_INCLUDE_DIRS
    ${CMAKE_CURRENT_SOURCE_DIR}/volk/include
    ${CMAKE_CURRENT_BINARY_DIR}/volk/include
)

if(ENABLE_VOLK)

include(GrPackage)
CPACK_SET(CPACK_COMPONENT_GROUP_VOLK_DESCRIPTION "Vector optimized library of kernels")

CPACK_COMPONENT("volk_runtime"
    GROUP        "Volk"
    DISPLAY_NAME "Runtime"
    DESCRIPTION  "Dynamic link libraries"
)

CPACK_COMPONENT("volk_devel"
    GROUP        "Volk"
    DISPLAY_NAME "Development"
    DESCRIPTION  "C++ headers, package config, import libraries"
)


add_subdirectory(volk)
endif(ENABLE_VOLK)

########################################################################
# Distribute the README file
########################################################################
install(
    FILES README README.hacking
    DESTINATION ${GR_PKG_DOC_DIR}
    COMPONENT "docs"
)


########################################################################
# Add subdirectories (in order of deps)
########################################################################
add_subdirectory(docs)
add_subdirectory(gruel)
add_subdirectory(gnuradio-core)
add_subdirectory(grc)

add_subdirectory(gr-atsc)
add_subdirectory(gr-audio)
add_subdirectory(gr-comedi)
add_subdirectory(gr-digital)
add_subdirectory(gr-noaa)
add_subdirectory(gr-pager)
add_subdirectory(gr-qtgui)
add_subdirectory(gr-trellis)
add_subdirectory(gr-uhd)
add_subdirectory(gr-shd)
add_subdirectory(gr-utils)
add_subdirectory(gr-video-sdl)
add_subdirectory(gr-vocoder)
add_subdirectory(gr-fcd)
add_subdirectory(gr-wavelet)
add_subdirectory(gr-wxgui)

#finalize cpack after subdirs processed
include(GrPackage)
CPACK_FINALIZE()

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