diff --git a/CMakeLists.txt b/CMakeLists.txt
index fbd64b6..7a4f463 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,10 +7,24 @@ include_directories (${CMAKE_BINARY_DIR}/include)
 link_directories (${CMAKE_BINARY_DIR}/lib)
 
 option (STATIC_BUILD "Build Planet Blupi statically" ON)
+option (EMSCRIPTEN "Build Planet Blupi for emscripten toolchain" OFF)
+
+if (EMSCRIPTEN)
+  set (BUILD_JS ON)
+  set (PLATFORM emscripten)
+elseif (APPLE)
+  set (BUILD_DARWIN ON)
+  set (PLATFORM darwin)
+elseif (UNIX)
+  set (BUILD_LINUX ON)
+  set (PLATFORM linux)
+elseif (MINGW OR WIN32)
+  set (BUILD_WINDOWS ON)
+  set (PLATFORM windows)
+endif ()
 
 # It's an hack in order to be able to link statically planetblupi on darwin.
-if (APPLE)
-  set (ISAPPLE 1)
+if (BUILD_DARWIN)
   set (CMD_LDFLAGS "-L${CMAKE_BINARY_DIR}/lib -framework AudioToolBox -framework AudioUnit -framework CoreAudio -framework CoreFoundation -framework Cocoa -framework OpenGL -framework IOKit -framework CoreVideo -framework Carbon")
 
   if (OLD_SDK)
@@ -21,136 +35,240 @@ if (APPLE)
     set (CMD_CFLAGS "-isysroot ${CMAKE_OSX_SYSROOT} -mmacosx-version-min=${OSX_SDK_VERSION} ${CMAKE_C_FLAGS}")
   endif ()
   set (CMD_CPPFLAGS "-I${CMAKE_BINARY_DIR}/include")
+elseif (BUILD_JS)
+  set (EMSCRIPTEN_FLAGS
+   "-s USE_ZLIB=1 -s USE_LIBPNG=1 -s USE_SDL=2 -s USE_SDL_IMAGE=2 -s SDL2_IMAGE_FORMATS=['png'] -s USE_OGG=1 -s USE_VORBIS=1 -s TOTAL_MEMORY=256MB -s WASM=1"
+  )
+  set (CMD_CXXFLAGS ${EMSCRIPTEN_FLAGS})
+  set (CMD_CFLAGS ${EMSCRIPTEN_FLAGS})
+  set (CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} ${EMSCRIPTEN_FLAGS})
+  set (CMAKE_C_FLAGS ${CMAKE_C_FLAGS} ${EMSCRIPTEN_FLAGS})
 endif ()
 
 configure_file (cmd.sh.in cmd.sh @ONLY)
 set (CMD ${CMAKE_BINARY_DIR}/cmd.sh)
 
+###############
+## Dependencies
+###############
+
 macro (DLEXT in out)
   if (NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/externals/${out}")
     file (DOWNLOAD "${in}" "${CMAKE_CURRENT_SOURCE_DIR}/externals/${out}" SHOW_PROGRESS)
   endif ()
 endmacro (DLEXT)
 
-DLEXT (http://www.zlib.net/zlib-1.2.11.tar.gz zlib.tar.gz)
-DLEXT (https://github.com/vietjtnguyen/argagg/archive/0.4.6.tar.gz argagg.tar.gz)
-DLEXT (https://curl.haxx.se/download/curl-7.55.0.tar.xz curl.tar.xz)
-DLEXT (http://mirror.switch.ch/ftp/mirror/gnu/gettext/gettext-0.19.8.1.tar.xz gettext.tar.xz)
-DLEXT (ftp://ftp-osl.osuosl.org/pub/libpng/src/libpng16/libpng-1.6.34.tar.xz libpng.tar.xz)
-DLEXT (http://www.ffmpeg.org/releases/ffmpeg-3.4.1.tar.xz ffmpeg.tar.xz)
-DLEXT (http://downloads.xiph.org/releases/ogg/libogg-1.3.3.tar.xz libogg.tar.xz)
-DLEXT (http://downloads.xiph.org/releases/vorbis/libvorbis-1.3.5.tar.xz libvorbis.tar.xz)
-DLEXT (https://www.libsdl.org/release/SDL2-2.0.8.tar.gz SDL2.tar.bz2)
-DLEXT (https://www.libsdl.org/projects/SDL_image/release/SDL2_image-2.0.3.tar.gz SDL2_image.tar.gz)
-DLEXT (https://www.libsdl.org/projects/SDL_mixer/release/SDL2_mixer-2.0.2.tar.gz SDL2_mixer.tar.gz)
+set (HAS_KITCHENSINK ON)
 
-if (NOT APPLE)
-  DLEXT (https://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.15.tar.gz libiconv.tar.gz)
+DLEXT (https://github.com/vietjtnguyen/argagg/archive/0.4.6.tar.gz argagg.tar.gz)
+set (HAS_ARGAGG ON)
+DLEXT (http://www.ffmpeg.org/releases/ffmpeg-3.4.1.tar.xz ffmpeg.tar.xz)
+set (HAS_FFMPEG ON)
+
+if (BUILD_JS)
+  DLEXT (https://www.libsdl.org/projects/SDL_mixer/release/SDL2_mixer-2.0.1.tar.gz SDL2_mixer.tar.gz)
+else ()
+  DLEXT (https://www.libsdl.org/projects/SDL_mixer/release/SDL2_mixer-2.0.2.tar.gz SDL2_mixer.tar.gz)
+endif ()
+set (HAS_SDLMIXER ON)
+
+if (NOT BUILD_JS)
+  DLEXT (http://www.zlib.net/zlib-1.2.11.tar.gz zlib.tar.gz)
+  set (HAS_ZLIB ON)
+  DLEXT (https://curl.haxx.se/download/curl-7.55.0.tar.xz curl.tar.xz)
+  set (HAS_CURL ON)
+  DLEXT (http://mirror.switch.ch/ftp/mirror/gnu/gettext/gettext-0.19.8.1.tar.xz gettext.tar.xz)
+  set (HAS_GETTEXT ON)
+  DLEXT (ftp://ftp-osl.osuosl.org/pub/libpng/src/libpng16/libpng-1.6.34.tar.xz libpng.tar.xz)
+  set (HAS_PNG ON)
+  DLEXT (http://downloads.xiph.org/releases/ogg/libogg-1.3.3.tar.xz libogg.tar.xz)
+  set (HAS_OGG ON)
+  DLEXT (http://downloads.xiph.org/releases/vorbis/libvorbis-1.3.5.tar.xz libvorbis.tar.xz)
+  set (HAS_VORBIS ON)
+  DLEXT (https://www.libsdl.org/release/SDL2-2.0.8.tar.gz SDL2.tar.bz2)
+  set (HAS_SDL ON)
+  DLEXT (https://www.libsdl.org/projects/SDL_image/release/SDL2_image-2.0.3.tar.gz SDL2_image.tar.gz)
+  set (HAS_SDLIMAGE ON)
 endif ()
 
-if (UNIX AND NOT APPLE)
+if (BUILD_LINUX AND BUILD_WINDOWS)
+  DLEXT (https://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.15.tar.gz libiconv.tar.gz)
+  set (HAS_ICONV ON)
+endif ()
+
+if (BUILD_LINUX)
   DLEXT (ftp://ftp.alsa-project.org/pub/lib/alsa-lib-1.1.4.1.tar.bz2 alsa-lib.tar.bz2)
+  set (HAS_ALSA ON)
   DLEXT (http://www.mega-nerd.com/libsndfile/files/libsndfile-1.0.28.tar.gz libsndfile.tar.gz)
+  set (HAS_SNDFILE ON)
   DLEXT (https://freedesktop.org/software/pulseaudio/releases/pulseaudio-11.1.tar.xz pulseaudio.tar.xz)
   DLEXT (http://www.linuxfromscratch.org/patches/blfs/svn/pulseaudio-11.1-glibc_2.27_fix-1.patch pulseaudio.patch)
+  set (HAS_PULSEAUDIO ON)
 endif ()
 
-#########
-## zlib
-#########
+message (STATUS "Build projects for ${PLATFORM}")
+if (HAS_ZLIB)
+  message (STATUS " * zlib")
+endif ()
+if (HAS_GETTEXT)
+  message (STATUS " * gettext")
+endif ()
+if (HAS_ARGAGG)
+  message (STATUS " * argagg")
+endif ()
+if (HAS_CURL)
+  message (STATUS " * libcurl")
+endif ()
+if (HAS_ICONV)
+  message (STATUS " * libiconv")
+endif ()
+if (HAS_PNG)
+  message (STATUS " * libpng")
+endif ()
+if (HAS_FFMPEG)
+  message (STATUS " * FFmpeg")
+endif ()
+if (HAS_SDL)
+  message (STATUS " * SDL2")
+endif ()
+if (HAS_SDLIMAGE)
+  message (STATUS " * SDL2_image")
+endif ()
+if (HAS_SDLMIXER)
+  message (STATUS " * SDL2_mixer")
+endif ()
+if (HAS_KITCHENSINK)
+  message (STATUS " * SDL_kitchensink")
+endif ()
+if (HAS_ALSA)
+  message (STATUS " * libasound")
+endif ()
+if (HAS_SNDFILE)
+  message (STATUS " * libsndfile")
+endif ()
+if (HAS_PULSEAUDIO)
+  message (STATUS " * libpulse")
+endif ()
+if (HAS_OGG)
+  message (STATUS " * libogg")
+endif ()
+if (HAS_VORBIS)
+  message (STATUS " * libvorbis")
+endif ()
 
-if (WIN32)
-  ExternalProject_Add (zlib_Project
-    URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/zlib.tar.gz
-    PREFIX ${CMAKE_BINARY_DIR}
-    CONFIGURE_COMMAND
-    BUILD_COMMAND ${CMD} make -fwin32/Makefile.gcc
-    INSTALL_COMMAND ${CMD} make install -fwin32/Makefile.gcc
-    BUILD_IN_SOURCE 1
-    INSTALL_DIR ${CMAKE_BINARY_DIR}
-  )
-else ()
-  ExternalProject_Add (zlib_Project
-    URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/zlib.tar.gz
-    PREFIX ${CMAKE_BINARY_DIR}
-    CONFIGURE_COMMAND ${CMD} ./configure
-      --prefix=${CMAKE_BINARY_DIR}
-      --static
-    BUILD_COMMAND ${CMD} make
-    INSTALL_COMMAND ${CMD} make install
-    BUILD_IN_SOURCE 1
-    INSTALL_DIR ${CMAKE_BINARY_DIR}
-  )
+set (planetblupi_DEPS)
+
+#######
+## zlib
+#######
+
+if (HAS_ZLIB)
+  if (BUILD_WINDOWS)
+    ExternalProject_Add (zlib_Project
+      URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/zlib.tar.gz
+      PREFIX ${CMAKE_BINARY_DIR}
+      CONFIGURE_COMMAND
+      BUILD_COMMAND ${CMD} make -fwin32/Makefile.gcc
+      INSTALL_COMMAND ${CMD} make install -fwin32/Makefile.gcc
+      BUILD_IN_SOURCE 1
+      INSTALL_DIR ${CMAKE_BINARY_DIR}
+    )
+  else ()
+    ExternalProject_Add (zlib_Project
+      URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/zlib.tar.gz
+      PREFIX ${CMAKE_BINARY_DIR}
+      CONFIGURE_COMMAND ${CMD} ./configure
+        --prefix=${CMAKE_BINARY_DIR}
+        --static
+      BUILD_COMMAND ${CMD} make
+      INSTALL_COMMAND ${CMD} make install
+      BUILD_IN_SOURCE 1
+      INSTALL_DIR ${CMAKE_BINARY_DIR}
+    )
+  endif ()
 endif ()
 
 #########
 ## argagg
 #########
 
-ExternalProject_Add (argagg_Project
-  URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/argagg.tar.gz
-  PREFIX ${CMAKE_BINARY_DIR}
-  CMAKE_ARGS "-DCMAKE_INSTALL_PREFIX:PATH=${CMAKE_BINARY_DIR}"
-)
+if (HAS_ARGAGG)
+  ExternalProject_Add (argagg_Project
+    URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/argagg.tar.gz
+    PREFIX ${CMAKE_BINARY_DIR}
+    CMAKE_ARGS "-DCMAKE_INSTALL_PREFIX:PATH=${CMAKE_BINARY_DIR}"
+  )
+
+  set (planetblupi_DEPS ${planetblupi_DEPS} argagg_Project)
+endif ()
 
 ##########
 ## libcurl
 ##########
 
-ExternalProject_Add (libcurl_Project
-  URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/curl.tar.xz
-  PREFIX ${CMAKE_BINARY_DIR}
-  CONFIGURE_COMMAND ${CMD} ./configure
-    --prefix=${CMAKE_BINARY_DIR}
-    --disable-shared
-    --enable-static
-    --enable-http
-    --disable-ftp
-    --disable-file
-    --disable-ldap
-    --disable-ldaps
-    --disable-rtsp
-    --disable-proxy
-    --disable-dict
-    --disable-telnet
-    --disable-tftp
-    --disable-pop3
-    --disable-imap
-    --disable-smb
-    --disable-smtp
-    --disable-gopher
-    --disable-manual
-    --disable-libcurl-option
-    --enable-ipv6
-    --disable-sspi
-    --disable-ntlm-wb
-    --disable-unix-socket
-    --without-winssl
-    --without-darwinssl
-    --without-ssl
-    --without-gnutls
-    --without-polarssl
-    --without-mbedtls
-    --without-cyassl
-    --without-axtls
-    --without-libpsl
-    --without-libmetalink
-    --without-libssh2
-    --without-librtmp
-    --without-nghttp2
-    --without-libidn2
-  BUILD_COMMAND ${CMD} make
-  INSTALL_COMMAND ${CMD} make install
-  BUILD_IN_SOURCE 1
-  INSTALL_DIR ${CMAKE_BINARY_DIR}
-  DEPENDS zlib_Project
-)
+if (HAS_CURL)
+  set (libcurl_DEPENDS)
+  if (HAS_ZLIB)
+    set (libcurl_DEPENDS ${libcurl_DEPENDS} zlib_Project)
+  endif ()
+
+  ExternalProject_Add (libcurl_Project
+    URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/curl.tar.xz
+    PREFIX ${CMAKE_BINARY_DIR}
+    CONFIGURE_COMMAND ${CMD} ./configure
+      --prefix=${CMAKE_BINARY_DIR}
+      --disable-shared
+      --enable-static
+      --enable-http
+      --disable-ftp
+      --disable-file
+      --disable-ldap
+      --disable-ldaps
+      --disable-rtsp
+      --disable-proxy
+      --disable-dict
+      --disable-telnet
+      --disable-tftp
+      --disable-pop3
+      --disable-imap
+      --disable-smb
+      --disable-smtp
+      --disable-gopher
+      --disable-manual
+      --disable-libcurl-option
+      --enable-ipv6
+      --disable-sspi
+      --disable-ntlm-wb
+      --disable-unix-socket
+      --without-winssl
+      --without-darwinssl
+      --without-ssl
+      --without-gnutls
+      --without-polarssl
+      --without-mbedtls
+      --without-cyassl
+      --without-axtls
+      --without-libpsl
+      --without-libmetalink
+      --without-libssh2
+      --without-librtmp
+      --without-nghttp2
+      --without-libidn2
+    BUILD_COMMAND ${CMD} make
+    INSTALL_COMMAND ${CMD} make install
+    BUILD_IN_SOURCE 1
+    INSTALL_DIR ${CMAKE_BINARY_DIR}
+    DEPENDS ${libcurl_DEPENDS}
+  )
+
+  set (planetblupi_DEPS ${planetblupi_DEPS} libcurl_Project)
+endif ()
 
 ###########
 ## libiconv
 ###########
 
-if (NOT APPLE)
+if (HAS_ICONV)
   ExternalProject_Add (libiconv_Project
     URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/libiconv.tar.gz
     PREFIX ${CMAKE_BINARY_DIR}
@@ -169,97 +287,120 @@ endif ()
 ## gettext
 ##########
 
-set (gettext_DEPENDS)
-if (NOT APPLE)
-  set (gettext_DEPENDS ${gettext_DEPENDS} libiconv_Project)
-endif ()
+if (HAS_GETTEXT)
+  set (gettext_DEPENDS)
+  if (HAS_ICONV)
+    set (gettext_DEPENDS ${gettext_DEPENDS} libiconv_Project)
+  endif ()
 
-ExternalProject_Add (gettext_Project
-  URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/gettext.tar.xz
-  PREFIX ${CMAKE_BINARY_DIR}
-  CONFIGURE_COMMAND cd gettext-runtime && ${CMD} ./configure
-    --prefix=${CMAKE_BINARY_DIR}
-    --disable-shared
-    --enable-static
-  BUILD_COMMAND ${CMD} make -C gettext-runtime
-  INSTALL_COMMAND ${CMD} make -C gettext-runtime install
-  BUILD_IN_SOURCE 1
-  INSTALL_DIR ${CMAKE_BINARY_DIR}
-  DEPENDS ${gettext_DEPENDS}
-)
+  ExternalProject_Add (gettext_Project
+    URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/gettext.tar.xz
+    PREFIX ${CMAKE_BINARY_DIR}
+    CONFIGURE_COMMAND cd gettext-runtime && ${CMD} ./configure
+      --prefix=${CMAKE_BINARY_DIR}
+      --disable-shared
+      --enable-static
+    BUILD_COMMAND ${CMD} make -C gettext-runtime
+    INSTALL_COMMAND ${CMD} make -C gettext-runtime install
+    BUILD_IN_SOURCE 1
+    INSTALL_DIR ${CMAKE_BINARY_DIR}
+    DEPENDS ${gettext_DEPENDS}
+  )
+
+  set (planetblupi_DEPS ${planetblupi_DEPS} gettext_Project)
+endif ()
 
 #########
 ## libpng
 #########
 
-ExternalProject_Add (libpng_Project
-  URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/libpng.tar.xz
-  PREFIX ${CMAKE_BINARY_DIR}
-  CONFIGURE_COMMAND ${CMD} ./configure
-    --prefix=${CMAKE_BINARY_DIR}
-    --disable-shared
-    --enable-static
-  BUILD_COMMAND ${CMD} make
-  INSTALL_COMMAND ${CMD} make install
-  BUILD_IN_SOURCE 1
-  INSTALL_DIR ${CMAKE_BINARY_DIR}
-  DEPENDS zlib_Project
-)
+if (HAS_PNG)
+  ExternalProject_Add (libpng_Project
+    URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/libpng.tar.xz
+    PREFIX ${CMAKE_BINARY_DIR}
+    CONFIGURE_COMMAND ${CMD} ./configure
+      --prefix=${CMAKE_BINARY_DIR}
+      --disable-shared
+      --enable-static
+    BUILD_COMMAND ${CMD} make
+    INSTALL_COMMAND ${CMD} make install
+    BUILD_IN_SOURCE 1
+    INSTALL_DIR ${CMAKE_BINARY_DIR}
+    DEPENDS zlib_Project
+  )
+
+  set (planetblupi_DEPS ${planetblupi_DEPS} libpng_Project)
+endif ()
 
 #########
 ## FFmpeg
 #########
 
-ExternalProject_Add (FFmpeg_Project
-  URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/ffmpeg.tar.xz
-  PREFIX ${CMAKE_BINARY_DIR}
-  CONFIGURE_COMMAND ${CMD} ./configure
-    --prefix=${CMAKE_BINARY_DIR}
-    --disable-shared
-    --enable-static
-    --disable-iconv
-    --disable-programs
-    --disable-doc
-    --disable-x86asm
-    --disable-avdevice
-    --disable-avfilter
-    --disable-network
-    --disable-everything
-    --enable-decoder=cinepak,msvideo1,vorbis
-    --enable-demuxer=matroska
-    --enable-protocol=file
-    --disable-crystalhd
-    --disable-xvmc
-    --disable-vaapi
-    --disable-videotoolbox
-    --disable-vdpau
-    --disable-vda
-    --disable-nvenc
-    --disable-dxva2
-    --disable-d3d11va
-    --disable-audiotoolbox
-    --disable-zlib
-    --disable-bzlib
-    --disable-lzma
-    --disable-xlib
-    --disable-sdl2
-    --disable-libxcb
-    --disable-libxcb-shm
-    --disable-libxcb-xfixes
-    --disable-libxcb-shape
-    --disable-jack
-    --disable-sndio
-  BUILD_COMMAND ${CMD} make
-  INSTALL_COMMAND ${CMD} make install
-  BUILD_IN_SOURCE 1
-  INSTALL_DIR ${CMAKE_BINARY_DIR}
-)
+if (HAS_FFMPEG)
+  set (FFMPEG_CONFIGURE)
+  if (BUILD_JS)
+    set (FFMPEG_CONFIGURE
+      --cc=emcc
+      --enable-cross-compile
+      --target-os=none
+      --arch=x86_64
+      --disable-asm
+      --disable-pthreads
+    )
+  endif ()
+
+  ExternalProject_Add (FFmpeg_Project
+    URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/ffmpeg.tar.xz
+    PREFIX ${CMAKE_BINARY_DIR}
+    CONFIGURE_COMMAND ${CMD} ./configure
+      --prefix=${CMAKE_BINARY_DIR}
+      --disable-shared
+      --enable-static
+      --disable-iconv
+      --disable-programs
+      --disable-doc
+      --disable-x86asm
+      --disable-avdevice
+      --disable-avfilter
+      --disable-network
+      --disable-everything
+      --enable-decoder=cinepak,msvideo1,vorbis
+      --enable-demuxer=matroska
+      --enable-protocol=file
+      --disable-crystalhd
+      --disable-xvmc
+      --disable-vaapi
+      --disable-videotoolbox
+      --disable-vdpau
+      --disable-vda
+      --disable-nvenc
+      --disable-dxva2
+      --disable-d3d11va
+      --disable-audiotoolbox
+      --disable-zlib
+      --disable-bzlib
+      --disable-lzma
+      --disable-xlib
+      --disable-sdl2
+      --disable-libxcb
+      --disable-libxcb-shm
+      --disable-libxcb-xfixes
+      --disable-libxcb-shape
+      --disable-jack
+      --disable-sndio
+      ${FFMPEG_CONFIGURE}
+    BUILD_COMMAND ${CMD} make
+    INSTALL_COMMAND ${CMD} make install
+    BUILD_IN_SOURCE 1
+    INSTALL_DIR ${CMAKE_BINARY_DIR}
+  )
+endif ()
 
 ############
 ## libasound
 ############
 
-if (UNIX AND NOT APPLE)
+if (HAS_ALSA)
   ExternalProject_Add (libasound_Project
     URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/alsa-lib.tar.bz2
     PREFIX ${CMAKE_BINARY_DIR}
@@ -274,48 +415,56 @@ if (UNIX AND NOT APPLE)
     BUILD_IN_SOURCE 1
     INSTALL_DIR ${CMAKE_BINARY_DIR}
   )
+
+  set (planetblupi_DEPS ${planetblupi_DEPS} libasound_Project)
 endif ()
 
 #########
 ## libogg
 #########
 
-ExternalProject_Add (libogg_Project
-  URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/libogg.tar.xz
-  PREFIX ${CMAKE_BINARY_DIR}
-  CONFIGURE_COMMAND ${CMD} ./configure
-    --prefix=${CMAKE_BINARY_DIR}
-    --disable-shared
-    --enable-static
-  BUILD_COMMAND ${CMD} make
-  INSTALL_COMMAND ${CMD} make install INSTALLDIR=${CMAKE_BINARY_DIR}
-  BUILD_IN_SOURCE 1
-  INSTALL_DIR ${CMAKE_BINARY_DIR}
-)
+if (HAS_OGG)
+  ExternalProject_Add (libogg_Project
+    URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/libogg.tar.xz
+    PREFIX ${CMAKE_BINARY_DIR}
+    CONFIGURE_COMMAND ${CMD} ./configure
+      --prefix=${CMAKE_BINARY_DIR}
+      --disable-shared
+      --enable-static
+    BUILD_COMMAND ${CMD} make
+    INSTALL_COMMAND ${CMD} make install INSTALLDIR=${CMAKE_BINARY_DIR}
+    BUILD_IN_SOURCE 1
+    INSTALL_DIR ${CMAKE_BINARY_DIR}
+  )
+endif ()
 
 ############
 ## libvorbis
 ############
 
-ExternalProject_Add (libvorbis_Project
-  URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/libvorbis.tar.xz
-  PREFIX ${CMAKE_BINARY_DIR}
-  CONFIGURE_COMMAND ${CMD} ./configure
-    --prefix=${CMAKE_BINARY_DIR}
-    --disable-shared
-    --enable-static
-  BUILD_COMMAND ${CMD} make
-  INSTALL_COMMAND ${CMD} make install INSTALLDIR=${CMAKE_BINARY_DIR}
-  BUILD_IN_SOURCE 1
-  INSTALL_DIR ${CMAKE_BINARY_DIR}
-  DEPENDS libogg_Project
-)
+if (HAS_VORBIS)
+  ExternalProject_Add (libvorbis_Project
+    URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/libvorbis.tar.xz
+    PREFIX ${CMAKE_BINARY_DIR}
+    CONFIGURE_COMMAND ${CMD} ./configure
+      --prefix=${CMAKE_BINARY_DIR}
+      --disable-shared
+      --enable-static
+    BUILD_COMMAND ${CMD} make
+    INSTALL_COMMAND ${CMD} make install INSTALLDIR=${CMAKE_BINARY_DIR}
+    BUILD_IN_SOURCE 1
+    INSTALL_DIR ${CMAKE_BINARY_DIR}
+    DEPENDS libogg_Project
+  )
+
+  set (planetblupi_DEPS ${planetblupi_DEPS} libvorbis_Project)
+endif ()
 
 #############
 ## libsndfile
 #############
 
-if (UNIX AND NOT APPLE)
+if (HAS_SNDFILE)
   ExternalProject_Add (libsndfile_Project
     URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/libsndfile.tar.gz
     PREFIX ${CMAKE_BINARY_DIR}
@@ -339,7 +488,7 @@ endif ()
 ## libpulse
 ###########
 
-if (UNIX AND NOT APPLE)
+if (HAS_PULSEAUDIO)
   ExternalProject_Add (libpulse_Project
     URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/pulseaudio.tar.xz
     PREFIX ${CMAKE_BINARY_DIR}
@@ -387,162 +536,201 @@ if (UNIX AND NOT APPLE)
     INSTALL_DIR ${CMAKE_BINARY_DIR}
     DEPENDS libasound_Project libsndfile_Project
   )
+
+  set (planetblupi_DEPS ${planetblupi_DEPS} libpulse_Project)
 endif ()
 
 #######
 ## SDL2
 #######
 
-if (UNIX AND NOT APPLE)
-  set (SDL2_CONFIGURE --enable-video-x11
-                      --enable-x11-shared
-                      --enable-video-wayland
-                      --enable-wayland-shared
-                      --enable-video-opengl
-                      --enable-oss
-                      --enable-alsa
-                      --disable-alsa-shared
-                      --disable-sndio
-                      --disable-sndio-shared
-                      --enable-pulseaudio
-                      --disable-pulseaudio-shared
-                      --disable-jack
-                      --disable-jack-shared)
-elseif (MINGW)
-  set (SDL2_CONFIGURE --enable-directx
-                      --enable-render-d3d
-                      --enable-video-opengl)
-elseif (APPLE)
-  set (SDL2_CONFIGURE --enable-video-opengl
-                      --enable-video-cocoa)
-endif ()
+if (HAS_SDL)
+  if (BUILD_LINUX)
+    set (SDL2_CONFIGURE
+      --enable-video-x11
+      --enable-x11-shared
+      --enable-video-wayland
+      --enable-wayland-shared
+      --enable-video-opengl
+      --enable-oss
+      --enable-alsa
+      --disable-alsa-shared
+      --disable-sndio
+      --disable-sndio-shared
+      --enable-pulseaudio
+      --disable-pulseaudio-shared
+      --disable-jack
+      --disable-jack-shared
+    )
+  elseif (BUILD_WINDOWS)
+    set (SDL2_CONFIGURE
+      --enable-directx
+      --enable-render-d3d
+      --enable-video-opengl
+    )
+  elseif (BUILD_DARWIN)
+    set (SDL2_CONFIGURE
+      --enable-video-opengl
+      --enable-video-cocoa
+    )
+  endif ()
 
-set (SDL2_DEPENDS zlib_Project)
-if (UNIX AND NOT APPLE)
-  set (SDL2_DEPENDS ${SDL2_DEPENDS} libasound_Project libpulse_Project)
-endif ()
+  set (SDL2_DEPENDS)
+  if (HAS_ZLIB)
+    set (SDL2_DEPENDS zlib_Project)
+  endif ()
+  if (HAS_ALSA)
+    set (SDL2_DEPENDS ${SDL2_DEPENDS} libasound_Project)
+  endif ()
+  if (HAS_PULSEAUDIO)
+    set (SDL2_DEPENDS ${SDL2_DEPENDS} libpulse_Project)
+  endif ()
 
-ExternalProject_Add (SDL2_Project
-  URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/SDL2.tar.bz2
-  PREFIX ${CMAKE_BINARY_DIR}
-  CONFIGURE_COMMAND ${CMD} ./configure
-    --prefix=${CMAKE_BINARY_DIR}
-    --disable-shared
-    --enable-static
-    --disable-joystick
-    --disable-haptic
-    ${SDL2_CONFIGURE}
-  BUILD_COMMAND ${CMD} make
-  INSTALL_COMMAND ${CMD} make install
-  BUILD_IN_SOURCE 1
-  INSTALL_DIR ${CMAKE_BINARY_DIR}
-  DEPENDS ${SDL2_DEPENDS}
-)
+  ExternalProject_Add (SDL2_Project
+    URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/SDL2.tar.bz2
+    PREFIX ${CMAKE_BINARY_DIR}
+    CONFIGURE_COMMAND ${CMD} ./configure
+      --prefix=${CMAKE_BINARY_DIR}
+      --disable-shared
+      --enable-static
+      --disable-joystick
+      --disable-haptic
+      ${SDL2_CONFIGURE}
+    BUILD_COMMAND ${CMD} make
+    INSTALL_COMMAND ${CMD} make install
+    BUILD_IN_SOURCE 1
+    INSTALL_DIR ${CMAKE_BINARY_DIR}
+    DEPENDS ${SDL2_DEPENDS}
+  )
+endif ()
 
 #############
 ## SDL2_image
 #############
 
-ExternalProject_Add (SDL2_image_Project
-  URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/SDL2_image.tar.gz
-  PREFIX ${CMAKE_BINARY_DIR}
-  CONFIGURE_COMMAND ${CMD} ./configure
-    --prefix=${CMAKE_BINARY_DIR}
-    --disable-shared
-    --enable-static
-    --disable-sdltest
-    --disable-bmp
-    --disable-gif
-    --disable-jpg
-    --disable-jpg-shared
-    --disable-lbm
-    --disable-pcx
-    --enable-png
-    --disable-png-shared
-    --disable-pnm
-    --disable-tga
-    --disable-tif
-    --disable-tif-shared
-    --disable-xcf
-    --disable-xpm
-    --disable-xv
-    --disable-webp
-    --disable-webp-shared
-  BUILD_COMMAND ${CMD} make
-  INSTALL_COMMAND ${CMD} make install
-  BUILD_IN_SOURCE 1
-  INSTALL_DIR ${CMAKE_BINARY_DIR}
-  DEPENDS SDL2_Project libpng_Project
-)
+if (HAS_SDLIMAGE)
+  ExternalProject_Add (SDL2_image_Project
+    URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/SDL2_image.tar.gz
+    PREFIX ${CMAKE_BINARY_DIR}
+    CONFIGURE_COMMAND ${CMD} ./configure
+      --prefix=${CMAKE_BINARY_DIR}
+      --disable-shared
+      --enable-static
+      --disable-sdltest
+      --disable-bmp
+      --disable-gif
+      --disable-jpg
+      --disable-jpg-shared
+      --disable-lbm
+      --disable-pcx
+      --enable-png
+      --disable-png-shared
+      --disable-pnm
+      --disable-tga
+      --disable-tif
+      --disable-tif-shared
+      --disable-xcf
+      --disable-xpm
+      --disable-xv
+      --disable-webp
+      --disable-webp-shared
+    BUILD_COMMAND ${CMD} make
+    INSTALL_COMMAND ${CMD} make install
+    BUILD_IN_SOURCE 1
+    INSTALL_DIR ${CMAKE_BINARY_DIR}
+    DEPENDS SDL2_Project libpng_Project
+  )
+endif ()
 
 #############
 ## SDL2_mixer
 #############
 
-set (SDL2_mixer_DEPENDS SDL2_Project libogg_Project libvorbis_Project)
-if (NOT APPLE)
-  set (SDL2_mixer_DEPENDS ${SDL2_mixer_DEPENDS} libiconv_Project)
-endif ()
+if (HAS_SDLMIXER)
+  set (SDL2_mixer_DEPENDS)
+  if (HAS_SDL)
+    set (SDL2_mixer_DEPENDS ${SDL2_mixer_DEPENDS} SDL2_Project)
+  endif ()
+  if (HAS_OGG)
+    set (SDL2_mixer_DEPENDS ${SDL2_mixer_DEPENDS} libogg_Project)
+  endif ()
+  if (HAS_VORBIS)
+    set (SDL2_mixer_DEPENDS ${SDL2_mixer_DEPENDS} libvorbis_Project)
+  endif ()
+  if (HAS_ICONV)
+    set (SDL2_mixer_DEPENDS ${SDL2_mixer_DEPENDS} libiconv_Project)
+  endif ()
 
-ExternalProject_Add (SDL2_mixer_Project
-  URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/SDL2_mixer.tar.gz
-  PREFIX ${CMAKE_BINARY_DIR}
-  CONFIGURE_COMMAND ${CMD} ./configure
-    --prefix=${CMAKE_BINARY_DIR}
-    --disable-shared
-    --enable-static
-    --disable-sdltest
-    --disable-music-cmd
-    --enable-music-wave
-    --disable-music-mod
-    --disable-music-mod-modplug
-    --disable-music-mod-modplug-shared
-    --disable-music-mod-mikmod
-    --disable-music-mod-mikmod-shared
-    --enable-music-midi
-    --enable-music-midi-timidity
-    --enable-music-midi-native
-    --disable-music-midi-fluidsynth
-    --disable-music-midi-fluidsynth-shared
-    --enable-music-ogg
-    --disable-music-ogg-tremor
-    --disable-music-ogg-shared
-    --disable-music-flac
-    --disable-music-flac-shared
-    --disable-music-mp3
-    --disable-music-mp3-smpeg
-    --disable-music-mp3-smpeg-shared
-    --disable-smpegtest
-    --disable-music-mp3-mad-gpl
-  BUILD_COMMAND ${CMD} make
-  INSTALL_COMMAND ${CMD} make install
-  BUILD_IN_SOURCE 1
-  INSTALL_DIR ${CMAKE_BINARY_DIR}
-  DEPENDS ${SDL2_mixer_DEPENDS}
-)
+  ExternalProject_Add (SDL2_mixer_Project
+    URL ${CMAKE_CURRENT_SOURCE_DIR}/externals/SDL2_mixer.tar.gz
+    PREFIX ${CMAKE_BINARY_DIR}
+    CONFIGURE_COMMAND ${CMD} ./configure
+      --prefix=${CMAKE_BINARY_DIR}
+      --disable-shared
+      --enable-static
+      --disable-sdltest
+      --disable-music-cmd
+      --enable-music-wave
+      --disable-music-mod
+      --disable-music-mod-modplug
+      --disable-music-mod-modplug-shared
+      --disable-music-mod-mikmod
+      --disable-music-mod-mikmod-shared
+      --enable-music-midi
+      --enable-music-midi-timidity
+      --enable-music-midi-native
+      --disable-music-midi-fluidsynth
+      --disable-music-midi-fluidsynth-shared
+      --enable-music-ogg
+      --disable-music-ogg-tremor
+      --disable-music-ogg-shared
+      --disable-music-flac
+      --disable-music-flac-shared
+      --disable-music-mp3
+      --disable-music-mp3-smpeg
+      --disable-music-mp3-smpeg-shared
+      --disable-smpegtest
+      --disable-music-mp3-mad-gpl
+    BUILD_COMMAND ${CMD} make
+    INSTALL_COMMAND ${CMD} make install
+    BUILD_IN_SOURCE 1
+    INSTALL_DIR ${CMAKE_BINARY_DIR}
+    DEPENDS ${SDL2_mixer_DEPENDS}
+  )
+endif ()
 
 ##################
 ## SDL_kitchensink
 ##################
 
-ExternalProject_Add (SDL_kitchensink_Project
-  URL ${CMAKE_SOURCE_DIR}/SDL_kitchensink
-  DOWNLOAD_COMMAND ""
-  SOURCE_DIR ${CMAKE_SOURCE_DIR}/SDL_kitchensink
-  PREFIX ${CMAKE_BINARY_DIR}
-  CMAKE_COMMAND ${CMD} cmake
-  CMAKE_ARGS -DDISABLE_SHARED=true
-             -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
-  INSTALL_DIR ${CMAKE_BINARY_DIR}
-  BUILD_ALWAYS 1
-  DEPENDS SDL2_Project FFmpeg_Project
-)
+if (HAS_KITCHENSINK)
+  set (SDL_kitchensink_DEPENDS FFmpeg_Project)
+  if (HAS_SDL)
+    set (SDL_kitchensink_DEPENDS ${SDL_kitchensink_DEPENDS} SDL2_Project)
+  endif ()
+
+  ExternalProject_Add (SDL_kitchensink_Project
+    URL ${CMAKE_SOURCE_DIR}/SDL_kitchensink
+    DOWNLOAD_COMMAND ""
+    SOURCE_DIR ${CMAKE_SOURCE_DIR}/SDL_kitchensink
+    PREFIX ${CMAKE_BINARY_DIR}
+    CMAKE_COMMAND ${CMD} cmake
+    CMAKE_ARGS -DDISABLE_SHARED=true
+               -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
+               -DCMAKE_C_FLAGS=${EMSCRIPTEN_FLAGS}
+    INSTALL_DIR ${CMAKE_BINARY_DIR}
+    BUILD_ALWAYS 1
+    DEPENDS ${SDL_kitchensink_DEPENDS}
+  )
+
+  set (planetblupi_DEPS ${planetblupi_DEPS} SDL_kitchensink_Project)
+endif ()
 
 ##############
 ## planetblupi
 ##############
 
-if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
+if (BUILD_LINUX)
   set (APPIMAGE_APPRUN_BIN     "AppRun-x86_64")
   set (APPIMAGE_APPRUN_URL     "https://github.com/probonopd/AppImageKit/releases/download/continuous/${APPIMAGE_APPRUN_BIN}")
   set (APPIMAGE_APPRUN_PROGRAM "${CMAKE_BINARY_DIR}/bin/${APPIMAGE_APPRUN_BIN}")
@@ -563,24 +751,6 @@ if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
   execute_process (COMMAND /bin/chmod 0755 "${APPIMAGE_TOOL_PROGRAM}")
 endif ()
 
-set (planetblupi_DEPS
-  argagg_Project
-  libcurl_Project
-  SDL2_Project
-  SDL2_image_Project
-  SDL2_mixer_Project
-  SDL_kitchensink_Project
-  libpng_Project
-  gettext_Project
-  libvorbis_Project
-)
-if (UNIX AND NOT APPLE)
-  list (APPEND planetblupi_DEPS
-    libasound_Project
-    libpulse_Project
-  )
-endif ()
-
 ExternalProject_Add (planetblupi_Project
   URL ${CMAKE_SOURCE_DIR}/planetblupi
   DOWNLOAD_COMMAND ""
@@ -591,9 +761,14 @@ ExternalProject_Add (planetblupi_Project
              -DAPPIMAGE_APPRUN_PROGRAM=${APPIMAGE_APPRUN_PROGRAM}
              -DAPPIMAGE_ASSISTANT_PROGRAM=${APPIMAGE_TOOL_PROGRAM}
              -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
-             -DPB_HTTP_VERSION_CHECK=yes
+             -DPB_HTTP_VERSION_CHECK=${HAS_CURL}
              -DSTATIC_BUILD=${STATIC_BUILD}
              -DSIGN_APP=${SIGN_APP}
+             -DEMSCRIPTEN_FLAGS=${EMSCRIPTEN_FLAGS}
+             -DBUILD_JS=${BUILD_JS}
+             -DBUILD_LINUX=${BUILD_LINUX}
+             -DBUILD_DARWIN=${BUILD_DARWIN}
+             -DBUILD_WINDOWS=${BUILD_WINDOWS}
   INSTALL_DIR ${CMAKE_BINARY_DIR}
   BUILD_ALWAYS 1
   DEPENDS ${planetblupi_DEPS}
diff --git a/SDL_kitchensink b/SDL_kitchensink
index c0f187f..616a3b4 160000
--- a/SDL_kitchensink
+++ b/SDL_kitchensink
@@ -1 +1 @@
-Subproject commit c0f187fd002b14ccb31fb1ecfe894e87ceac343e
+Subproject commit 616a3b439bde626f26726e2484713e6c9a475dcb
diff --git a/planetblupi b/planetblupi
index dd18a0b..8d67df2 160000
--- a/planetblupi
+++ b/planetblupi
@@ -1 +1 @@
-Subproject commit dd18a0bdaff105cc956d2c9628bcb2d2d9db25c0
+Subproject commit 8d67df23b13e623872e7323c5827000c3f4514ba
diff --git a/planetblupi-data b/planetblupi-data
index 5685f4d..0ebdd99 160000
--- a/planetblupi-data
+++ b/planetblupi-data
@@ -1 +1 @@
-Subproject commit 5685f4d6a0d2a5d6684618e4f3c84703665b8fc3
+Subproject commit 0ebdd99246682b7abc138678186446dbdcd79100