#
#The main purpose of this file is to build and install all third party packages that are needed in order to 
#build the executables that we will debug on Windows in order to test and analyze the software in a more capable 
#debugger (Visual Studio). Using this file with cmake makes us independent of the UNIX-only tool LTIB when 
#building those particular executables on Windows (and Linux for that matter). LTIB is used only to build the 
#full system image for running under Embedded Linux on the device.
#
#This file allows us to use CMake as a portable package manager for 3rd party packages.
#It is required on Windows to address the fact that Windows does not have a native package manager.
#
#This file can also be used on Linux to pull in all third party dependencies
#so we can avoid using LTIB during the edit-compile-debug cycle, thereby minimizing 
#the turnaround time and maximizing developer efficiency. 
#

#
#Tools assumed to be pre-installed in order to build OSD on Windows:
#
#* CMake 3.9.3 or later (required in order to find all the boost libraries)
#* Visual Studio 2015 Community edition (freely available from https://www.visualstudio.com/en-us/products/visual-studio-community-vs.aspx)
#* ActivePython 2.7.8 or later (but not 3.x) (freely available from http://www.activestate.com/activeperl)
#* ActivePerl version 5.24.1 or later (freely available from http://www.activestate.com/activepython)
#  with the following CPAN packages:
#  CPAN requiremens for rdm:
#  cpan[1]> install XML::Simple
#  cpan[2]> install Parse::Lex
#  cpan[3]> install Convert::Binary::C
#  CPAN requirements for openssl:
#  cpan[4]> install Text::Template
#  cpan[5]> install Test::More
#
#Assuming that the above tools are in place, you can build OSD as follows:
#
#cmake -G "NMake Makefiles" -DCMAKE_INSTALL_PREFIX=c:\work\local c:\work\prep
#cmake --build .
#
#The end result can be a found under c:\work\local as a fully populated
#directory hierarchy organized according to FHS (Filesystem Hierachy Standard)
#
#https://en.wikipedia.org/wiki/Filesystem_Hierarchy_Standard
#
#Note that FHS is just a convention, which can be followed regardless of the
#host operating system.
#
#Note that a large part of the work that went into composing OSD is rooted in
#the fact that the Microsoft tools give rise to a number of "schisms" that OSD
#must treat consistently across libraries so that all those libraries can be
#combined in the same program. The choice of C runtime is one such schism. All
#the libraries of OSD compile to use the same variant of the C runtime
#library. All the OSD libraries use the default MSVC runtime, which is
#dynamically linked. Each library included in OSD has been carefuly configured
#to ensure that all libraries rely on the same version of the C runtime
#library. Since Visual Studio 2015, the dynamically linked runtime has been
#much improved and no longer suffers from ever-returning compatibility
#problems across versions of MSVC.
#
#From the above follows that programs that rely on OSD should use the default
#(dynamically linked) C runtime library when building with MSVC.
#
#Note that all OSD libraries are statically linked with the notable exception 
#of the C runtime library. Choosing static linking over dynamic is rooted in
#the fact that with Microsoft tools, symbols must be explicitly exported from
#dynamically linked libraries. Due to C++ name mangling, exporting quickly
#becomes challenging. Dynamically linked C++ libraries pose problems with
#compatibility between the library and the programs that use them. Using
#static libraries also eliminates the need for "name decoration" in header
#files via the __declspec MSVC directive. Finally, bear in mind that some of 
#the motivation behind dynamically linked libraries is that it frees the build
#process from worrying about transitive library dependencies (such
#dependencies are instead resolved by the loader at runtime). CMake handles a
#lot of the issues with transitive library dependencies for us at link time,
#so the argument that dynamic linking simplifies the build process is reduced.
#

project(extlib)
cmake_minimum_required(VERSION 3.9.3) #Must understand the boost library layout
include(ExternalProject)

if (CMAKE_CROSSCOMPILING)
  message (STATUS "CMake is cross compiling with CMAKE_FIND_ROOT_PATH=" ${CMAKE_FIND_ROOT_PATH})
else ()
  message (STATUS "CMake is NOT cross compiling")
endif (CMAKE_CROSSCOMPILING)

if (WIN32)
  if (CMAKE_CL_64)
    message (STATUS "Will generate 64 bit code")
  else (CMAKE_CL_64)
    message (STATUS "Will generate 32 bit code")
  endif (CMAKE_CL_64)
endif (WIN32)

#Install all the build tools required to build the OSD libraries. These tools
#are not for manual use from the command prompt via the PATH environment
#variable, but are only invoked via a given absolute path from the build
#scripts of the OSD libraries that DEPENDS on them. CMake library build
#scripts should preferably use find_program() to determine the absolute path.
#Packages using other build systems can use the absolute path listed below.

add_subdirectory (mkisofs/3.02)              #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/bin/mkisofs>
add_subdirectory (mkpsxiso/trunk)            #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/bin/mkpsxiso>
add_subdirectory (uudecode/4.1)              #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/bin/uudecode>
add_subdirectory (flex/2.6.3)                #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/bin/flex>
add_subdirectory (bison/3.0.4)               #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/bin/bison>
add_subdirectory (file2c/trunk)              #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/bin/file2c>
add_subdirectory (ragel/6.9)                 #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/bin/ragel>
add_subdirectory (yasm/1.3.0)                #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/bin/yasm>
add_subdirectory (nasm/2.12.2)               #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/bin/nasm>
add_subdirectory (sed/3.0.2)                 #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/bin/sed>
add_subdirectory (ruby/1.9.3)                #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/bin/ruby>
add_subdirectory (perl/5.25.10)              #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/bin/perl>
add_subdirectory (python/2.7.12)             #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/python2/bin/python>
add_subdirectory (python/3.5.2)              #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/bin/python>
add_subdirectory (gawk/3.1.0)                #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/bin/gawk>
add_subdirectory (swig/3.0.12)               #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/bin/swig>
add_subdirectory (scons/2.5.1)               #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/python2/Scripts/scons>
add_subdirectory (llvm/7.0.1)                #Libraries required by all LLVM tools (clang/lld)
add_subdirectory (clang/7.0.1)               #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/bin/clang++>
add_subdirectory (lld/7.0.1)                 #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/bin/lld>
add_subdirectory (openwatcom/20191021)       #To use: Specify -DCMAKE_TOOLCHAIN_FILE:PATH=${WATCOM_TOOLCHAIN_FILE}
add_subdirectory (miniconda/4.5.11)          #$<SHELL_PATH:${CONDA_CMD}> install -y <conda_package>
add_subdirectory (keras/2.2.2)               #$<SHELL_PATH:${CONDA_CMD}> python_code_using_keras.py
add_subdirectory (posix-runtime/20180531)    #$<SHELL_PATH:${POSIX_CMD> echo hello>
add_subdirectory (posix-dev/20180531)        #$<SHELL_PATH:${POSIX_CMD> gcc>
add_subdirectory (bmake/20180919)            #$<SHELL_PATH:${POSIX_CMD> make>
add_subdirectory (autotools/20180531)        #$<SHELL_PATH:${BASH_CMD}> ./configure
add_subdirectory (yocto/dunfell)             #Linux tools required for building embedded Linux kernels with Yocto

#Create and install clang toolchain files for use when cross-compiling.
#Creating a toolchain file relies on cmake finding the clang compiler and an
#llvm linker (which must be installed above). The clang compiler must support
#the target specified in the generated toolchain file, so we must take care to
#build LLVM with support for the most popular CPU targets (X86/ARM/AARCH64).
#AARCH64 allows us to generate code for the 64 bit Raspberry Pi3.
#Two toolchain files are generated, their full paths available via two macros:
#${CLANG_TOOLCHAIN_FILE} - to compile stuff that relies on a C library
#${CLANG_FREESTANDING_TOOLCHAIN_FILE} - to compile stuff that does NOT rely on a C library (operating system kernels)

add_subdirectory (clang-toolchain/trunk)     #To use: Specify -DCMAKE_TOOLCHAIN_FILE:PATH=${CLANG_TOOLCHAIN_FILE} or ${CLANG_FREESTANDING_TOOLCHAIN_FILE}

#The OSD libraries. They are built from publicly available sources using the
#build tools preferred by the library creators. For details, see
#http://cmake.3232098.n2.nabble.com/ExternalProject-dependency-question-td6934209.html
#The configure/build step of the following packages can make use of the build
#tools installed above via the given absolute path for each tool.

add_subdirectory (freedos/2042)              #Real mode DOS kernel without command shell
add_subdirectory (fbird/2017-07-27)          #$<SHELL_PATH:${CMAKE_INSTALL_PREFIX}/boot/fbird> is a PC BIOS boot sector game
add_subdirectory (getopt/folklore)
add_subdirectory (bsd-config/11.2)
add_subdirectory (dtc/1.4.7)
add_subdirectory (ogg/1.3.3)
add_subdirectory (vorbis/1.3.6)
add_subdirectory (stk/4.6.0)
add_subdirectory (libsndfile/1.0.28)
add_subdirectory (clapack/3.2.1)
add_subdirectory (fftw/3.3.8)
add_subdirectory (tnt/1.2.6)
add_subdirectory (jama/1.2.5)
add_subdirectory (zlib/1.2.7)
add_subdirectory (libpng/1.6.16)
add_subdirectory (openssl/1.1.0d)
add_subdirectory (iconv/44)
add_subdirectory (libxml/2.9.3)
add_subdirectory (libxslt/1.1.29)
add_subdirectory (tinyxml2/7.0.1)
add_subdirectory (xerces/3.1.1)
add_subdirectory (xsd/3.3.0)
add_subdirectory (bzip2/1.0.6)
add_subdirectory (postgresql/2018-03-06)
add_subdirectory (stdint/26)
add_subdirectory (expat/2.1.0)
#APR is not actively maintained
#add_subdirectory (apr/1.5.2)
#APR is not actively maintained
#add_subdirectory (apr-iconv/1.2.1)
#APR is not actively maintained
#add_subdirectory (apr-util/1.5.4)
#BDB requires vcbuild - skip for now
#add_subdirectory (bdb/4.8.30)
#No longer available for download
#add_subdirectory (neon/0.29.6)
add_subdirectory (sqlite/3.8.8.3)
#Strange compiler error with VS2013 - skip for now
#add_subdirectory (libssh/0.5.2)
#Serf 0.7.0 Does not compile with OpenSSL 1.1.0
#Serf 1.3.9 requires APR which has been retired from OSD
#add_subdirectory (serf/0.7.0)
#add_subdirectory (serf/1.3.9)
add_subdirectory (pcre/8.35)
#HTTPD requires APR which has been retired from OSD
#add_subdirectory (httpd/2.4.25)
add_subdirectory (tre/0.8.0)
#No longer available for download
#add_subdirectory (unix98/unknown)
add_subdirectory (argtable/2.13)
add_subdirectory (gflags/2.2.1)
add_subdirectory (glog/0.3.5)
add_subdirectory (snappy/cmake)
#No longer available for download
#add_subdirectory (jack/1.9.8)
add_subdirectory (portaudio/v190600_20161030)
#add_subdirectory (gsmlib/1.10)
add_subdirectory (pthreads/2.9.1)
#Patched file missing
#add_subdirectory (libusb/1.0.9)
#Depends on libusb
#add_subdirectory (libftdi/0.20)
add_subdirectory (boost/1.63.0)
#Huge
add_subdirectory (wt/3.3.7rc1)
add_subdirectory (libjpeg/8c)
add_subdirectory (libtiff/4.0.9)
add_subdirectory (wxwidgets/3.1.1)
add_subdirectory (pixman/0.32.6)
add_subdirectory (freetype/2.5.5)
add_subdirectory (libgit2/0.22.1)
add_subdirectory (twit/trunk)
add_subdirectory (mongoose/5.6)
add_subdirectory (mxml/2.9)
add_subdirectory (curl/7.62.0)
#Hangs during build step
#add_subdirectory (mongodb/3.4.2)
add_subdirectory (node.js/4.3.0)
add_subdirectory (libcsv/3.0.3)
add_subdirectory (libgen/trunk)
add_subdirectory (protobuf/3.1.0)
add_subdirectory (onnx/1.2.2)
add_subdirectory (muparser/2.2.5)
add_subdirectory (libmodbus/3.0.6)
add_subdirectory (libarchive/3.2.2)
add_subdirectory (googletest/1.8.0)
add_subdirectory (cryptopp/5.6.5)
add_subdirectory (mariadb/10.1.19)
add_subdirectory (mosquitto/1.4.10)
add_subdirectory (harfbuzz/1.4.1)
add_subdirectory (qt/5.8.0)
add_subdirectory (ninja/1.7.2)
add_subdirectory (c-ares/trunk)
add_subdirectory (libcpuid/1.0.0)
add_subdirectory (jsoncpp/1.7.7)
add_subdirectory (libmicrohttpd/0.9.52)
add_subdirectory (miniupnpc/1.8)
add_subdirectory (catch/1.6.1)
add_subdirectory (jsonrpccpp/0.7.0)
add_subdirectory (leveldb/1.18)
add_subdirectory (json-spirit/98)
add_subdirectory (libscrypt/1.21)
add_subdirectory (mpir/2.7.2)
add_subdirectory (secp256k1/190)
#Ethereum is no longer available from github
#add_subdirectory (ethereum/develop)
#add_subdirectory (evmjit/develop)
add_subdirectory (shark/3.1.0)
add_subdirectory (opencv/3.3.0)
add_subdirectory (hdf5/1.8.16)
add_subdirectory (lmdb/0.9.18)
add_subdirectory (openblas/0.2.20)
add_subdirectory (caffe/win)
add_subdirectory (basicdsp/2.0)
add_subdirectory (aquila/20150507)
add_subdirectory (armadillo/9.100.5)
add_subdirectory (sfml/2.5.0)
add_subdirectory (sdl/2.0.8)
add_subdirectory (ffmpeg/4.0.2)
add_subdirectory (vtk/8.1.1)
add_subdirectory (libshout/2.4.1)
add_subdirectory (ices/2.0.2)
add_subdirectory (icecast/2.4.3)
add_subdirectory (yocto-pinger/trunk)        #Yocto top layer for a Raspberry Pi to act as an embedded Linux realtime ping target 
add_subdirectory (zmq/4.3.4)

#RDM requires perl for the configure step
#add_subdirectory (rdm/14)