mirror of https://github.com/libsdl-org/SDL
configure/cmake: Hook up Emscripten threads (disabled by default).
Fixes #3795.
This commit is contained in:
Ryan C. Gordon
parent
354cabd4a7
commit
a81fe27271
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@ -153,7 +153,14 @@ else()
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set(UNIX_OR_MAC_SYS OFF)
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endif()
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if (UNIX_OR_MAC_SYS AND NOT EMSCRIPTEN) # JavaScript does not yet have threading support, so disable pthreads when building for Emscripten.
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# Emscripten pthreads work, but you need to have a non-pthread fallback build
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# for systems without support. It's not currently enough to not use
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# pthread functions in a pthread-build; it won't start up on unsupported
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# browsers. As such, you have to explicitly enable it on Emscripten builds
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# for the time being. This default with change to ON once this becomes
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# commonly supported in browsers or the Emscripten teams makes a single
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# binary work everywhere.
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if (UNIX_OR_MAC_SYS AND NOT EMSCRIPTEN)
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set(SDL_PTHREADS_ENABLED_BY_DEFAULT ON)
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else()
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set(SDL_PTHREADS_ENABLED_BY_DEFAULT OFF)
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@ -289,11 +296,14 @@ set(OPT_DEF_ASM TRUE)
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if(EMSCRIPTEN)
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# Set up default values for the currently supported set of subsystems:
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# Emscripten/Javascript does not have assembly support, a dynamic library
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# loading architecture, low-level CPU inspection or multithreading.
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# loading architecture, or low-level CPU inspection.
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# SDL_THREADS_ENABLED_BY_DEFAULT now defaults to ON, but pthread support might be disabled by default.
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# !!! FIXME: most of these subsystems should default to ON if there are dummy implementations to be used.
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set(OPT_DEF_ASM FALSE)
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set(SDL_SHARED_ENABLED_BY_DEFAULT OFF)
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set(SDL_ATOMIC_ENABLED_BY_DEFAULT OFF)
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set(SDL_THREADS_ENABLED_BY_DEFAULT OFF)
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set(SDL_LOADSO_ENABLED_BY_DEFAULT OFF)
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set(SDL_CPUINFO_ENABLED_BY_DEFAULT OFF)
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set(SDL_DLOPEN_ENABLED_BY_DEFAULT OFF)
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@ -1154,6 +1164,8 @@ elseif(EMSCRIPTEN)
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endif()
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endif()
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CheckPTHREAD()
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elseif(UNIX AND NOT APPLE AND NOT ANDROID AND NOT RISCOS)
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if(SDL_AUDIO)
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if(SYSV5 OR SOLARIS OR HPUX)
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@ -919,6 +919,9 @@ macro(CheckPTHREAD)
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elseif(HAIKU)
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set(PTHREAD_CFLAGS "-D_REENTRANT")
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set(PTHREAD_LDFLAGS "")
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elseif(EMSCRIPTEN)
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set(PTHREAD_CFLAGS "-D_REENTRANT -pthread")
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set(PTHREAD_LDFLAGS "-pthread")
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else()
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set(PTHREAD_CFLAGS "-D_REENTRANT")
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set(PTHREAD_LDFLAGS "-lpthread")
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@ -771,6 +771,7 @@ infodir
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docdir
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oldincludedir
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includedir
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runstatedir
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localstatedir
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sharedstatedir
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sysconfdir
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@ -986,6 +987,7 @@ datadir='${datarootdir}'
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sysconfdir='${prefix}/etc'
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sharedstatedir='${prefix}/com'
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localstatedir='${prefix}/var'
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runstatedir='${localstatedir}/run'
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includedir='${prefix}/include'
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oldincludedir='/usr/include'
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docdir='${datarootdir}/doc/${PACKAGE}'
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@ -1238,6 +1240,15 @@ do
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| -silent | --silent | --silen | --sile | --sil)
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silent=yes ;;
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-runstatedir | --runstatedir | --runstatedi | --runstated \
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| --runstate | --runstat | --runsta | --runst | --runs \
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| --run | --ru | --r)
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ac_prev=runstatedir ;;
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-runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
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| --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
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| --run=* | --ru=* | --r=*)
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runstatedir=$ac_optarg ;;
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-sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
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ac_prev=sbindir ;;
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-sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
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@ -1375,7 +1386,7 @@ fi
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for ac_var in exec_prefix prefix bindir sbindir libexecdir datarootdir \
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datadir sysconfdir sharedstatedir localstatedir includedir \
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oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
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libdir localedir mandir
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libdir localedir mandir runstatedir
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do
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eval ac_val=\$$ac_var
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# Remove trailing slashes.
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@ -1528,6 +1539,7 @@ Fine tuning of the installation directories:
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--sysconfdir=DIR read-only single-machine data [PREFIX/etc]
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--sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com]
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--localstatedir=DIR modifiable single-machine data [PREFIX/var]
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--runstatedir=DIR modifiable per-process data [LOCALSTATEDIR/run]
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--libdir=DIR object code libraries [EPREFIX/lib]
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--includedir=DIR C header files [PREFIX/include]
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--oldincludedir=DIR C header files for non-gcc [/usr/include]
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@ -1682,8 +1694,9 @@ Optional Features:
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--enable-ibus enable IBus support [default=yes]
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--enable-fcitx enable fcitx support [default=yes]
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--enable-joystick-mfi include macOS MFI joystick support [default=yes]
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--enable-pthreads use POSIX threads for multi-threading [default=yes]
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--enable-pthread-sem use pthread semaphores [default=yes]
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--enable-pthreads use POSIX threads for multi-threading
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[default=maybe]
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--enable-pthread-sem use pthread semaphores [default=maybe]
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--enable-directx use DirectX for Windows audio/video [default=yes]
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--enable-xinput use Xinput for Windows [default=yes]
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--enable-wasapi use the Windows WASAPI audio driver [default=yes]
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@ -20257,34 +20270,8 @@ else
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$as_echo_n "(cached) " >&6
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else
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# One or both of the vars are not set, and there is no cached value.
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ac_x_includes=no
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ac_x_libraries=no
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# Do we need to do anything special at all?
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ac_save_LIBS=$LIBS
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LIBS="-lX11 $LIBS"
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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#include <X11/Xlib.h>
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int
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main ()
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{
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XrmInitialize ()
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_link "$LINENO"; then :
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# We can compile and link X programs with no special options.
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ac_x_includes=
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ac_x_libraries=
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fi
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rm -f core conftest.err conftest.$ac_objext \
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conftest$ac_exeext conftest.$ac_ext
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LIBS="$ac_save_LIBS"
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# If that didn't work, only try xmkmf and filesystem searches
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# for native compilation.
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if test x"$ac_x_includes" = xno && test "$cross_compiling" = no; then :
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rm -f -r conftest.dir
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ac_x_includes=no ac_x_libraries=no
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rm -f -r conftest.dir
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if mkdir conftest.dir; then
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cd conftest.dir
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cat >Imakefile <<'_ACEOF'
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@ -20323,7 +20310,7 @@ _ACEOF
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rm -f -r conftest.dir
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fi
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# Standard set of common directories for X headers.
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# Standard set of common directories for X headers.
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# Check X11 before X11Rn because it is often a symlink to the current release.
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ac_x_header_dirs='
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/usr/X11/include
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@ -20350,8 +20337,6 @@ ac_x_header_dirs='
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/usr/local/include/X11R5
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/usr/local/include/X11R4
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/opt/X11/include
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/usr/X386/include
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/usr/x386/include
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/usr/XFree86/include/X11
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@ -20425,17 +20410,15 @@ rm -f core conftest.err conftest.$ac_objext \
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conftest$ac_exeext conftest.$ac_ext
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fi # $ac_x_libraries = no
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fi
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# Record the results.
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case $ac_x_includes,$ac_x_libraries in #(
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no,* | *,no | *\'*) :
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no,* | *,no | *\'*)
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# Didn't find X, or a directory has "'" in its name.
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ac_cv_have_x="have_x=no" ;; #(
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*) :
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ac_cv_have_x="have_x=no";; #(
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*)
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# Record where we found X for the cache.
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ac_cv_have_x="have_x=yes\
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ac_x_includes='$ac_x_includes'\
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ac_x_libraries='$ac_x_libraries'" ;;
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ac_x_libraries='$ac_x_libraries'"
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esac
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fi
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;; #(
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@ -23541,20 +23524,39 @@ $as_echo "#define SDL_JOYSTICK_MFI 1" >>confdefs.h
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CheckPTHREAD()
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{
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# Check whether --enable-pthreads was given.
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case "$host" in
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*-*-emscripten*)
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enable_pthreads_default=no
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;;
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*)
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enable_pthreads_default=yes
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;;
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esac
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# Check whether --enable-pthreads was given.
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if test "${enable_pthreads+set}" = set; then :
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enableval=$enable_pthreads;
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else
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enable_pthreads=yes
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enable_pthreads=maybe
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fi
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# Check whether --enable-pthread-sem was given.
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if test "${enable_pthread_sem+set}" = set; then :
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enableval=$enable_pthread_sem;
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else
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enable_pthread_sem=yes
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enable_pthread_sem=maybe
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fi
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if test x$enable_pthreads = xmaybe; then
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enable_pthreads=$enable_pthreads_default
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fi
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if test x$enable_pthread_sem = xmaybe; then
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enable_pthread_sem=$enable_pthreads
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fi
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case "$host" in
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*-*-android*)
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pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
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@ -23620,6 +23622,10 @@ fi
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pthread_cflags="-D_REENTRANT"
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pthread_lib=""
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;;
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*-*-emscripten*)
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pthread_cflags="-D_REENTRANT -pthread"
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pthread_lib="-pthread"
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;;
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*)
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pthread_cflags="-D_REENTRANT"
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pthread_lib="-lpthread"
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@ -25868,6 +25874,7 @@ $as_echo "#define SDL_AUDIO_DRIVER_EMSCRIPTEN 1" >>confdefs.h
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CheckDummyVideo
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CheckDiskAudio
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CheckDummyAudio
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CheckPTHREAD
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CheckDLOPEN
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CheckClockGettime
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CheckEmscriptenGLES
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39
configure.ac
39
configure.ac
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@ -2941,13 +2941,39 @@ dnl See what type of thread model to use on Linux and Solaris
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CheckPTHREAD()
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{
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dnl Check for pthread support
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dnl Emscripten pthreads work, but you need to have a non-pthread fallback build
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dnl for systems without support. It's not currently enough to not use
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dnl pthread functions in a pthread-build; it won't start up on unsupported
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dnl browsers. As such, you have to explicitly enable it on Emscripten builds
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dnl for the time being. This default with change to ON once this becomes
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dnl commonly supported in browsers or the Emscripten teams makes a single
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dnl binary work everywhere.
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case "$host" in
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*-*-emscripten*)
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enable_pthreads_default=no
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;;
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*)
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enable_pthreads_default=yes
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;;
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esac
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AC_ARG_ENABLE(pthreads,
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[AS_HELP_STRING([--enable-pthreads], [use POSIX threads for multi-threading [default=yes]])],
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, enable_pthreads=yes)
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[AS_HELP_STRING([--enable-pthreads], [use POSIX threads for multi-threading [default=maybe]])],
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, enable_pthreads=maybe)
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dnl This is used on Linux for glibc binary compatibility (Doh!)
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AC_ARG_ENABLE(pthread-sem,
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[AS_HELP_STRING([--enable-pthread-sem], [use pthread semaphores [default=yes]])],
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, enable_pthread_sem=yes)
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[AS_HELP_STRING([--enable-pthread-sem], [use pthread semaphores [default=maybe]])],
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, enable_pthread_sem=maybe)
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if test x$enable_pthreads = xmaybe; then
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enable_pthreads=$enable_pthreads_default
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fi
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if test x$enable_pthread_sem = xmaybe; then
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enable_pthread_sem=$enable_pthreads
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fi
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case "$host" in
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*-*-android*)
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pthread_cflags="-D_REENTRANT -D_THREAD_SAFE"
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@ -3013,6 +3039,10 @@ CheckPTHREAD()
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pthread_cflags="-D_REENTRANT"
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pthread_lib=""
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;;
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*-*-emscripten*)
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pthread_cflags="-D_REENTRANT -pthread"
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pthread_lib="-pthread"
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;;
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*)
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pthread_cflags="-D_REENTRANT"
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pthread_lib="-lpthread"
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@ -4302,6 +4332,7 @@ case "$host" in
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CheckDummyVideo
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CheckDiskAudio
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CheckDummyAudio
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CheckPTHREAD
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CheckDLOPEN
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CheckClockGettime
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CheckEmscriptenGLES
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