mirror of https://github.com/python/cpython
bpo-40280: Add --enable-wasm-dynamic-linking (GH-32253)
This commit is contained in:
Christian Heimes
GitHub
parent
48269ea9fd
commit
c9844cb8aa
|
|
@ -52,11 +52,13 @@ General Options
|
|||
Set the Python executable suffix to *SUFFIX*.
|
||||
|
||||
The default suffix is ``.exe`` on Windows and macOS (``python.exe``
|
||||
executable), ``.wasm`` on Emscripten (``python.wasm`` executable), and
|
||||
an empty string on other platforms (``python`` executable).
|
||||
executable), ``.js`` on Emscripten node, ``.html`` on Emscripten browser,
|
||||
``.wasm`` on WASI, and an empty string on other platforms (``python``
|
||||
executable).
|
||||
|
||||
.. versionchanged:: 3.11
|
||||
The default suffix on Emscripten platform is ``.wasm``.
|
||||
The default suffix on WASM platform is one of ``.js``, ``.html``
|
||||
or ``.wasm``.
|
||||
|
||||
.. cmdoption:: --with-tzpath=<list of absolute paths separated by pathsep>
|
||||
|
||||
|
|
@ -141,6 +143,27 @@ General Options
|
|||
|
||||
.. versionadded:: 3.11
|
||||
|
||||
WebAssemby Options
|
||||
------------------
|
||||
|
||||
.. cmdoption:: --with-emscripten-target=[browser|node]
|
||||
|
||||
Set build flavor for ``wasm32-emscripten``.
|
||||
|
||||
* ``browser`` (default): preload minimal stdlib, default MEMFS.
|
||||
* ``node``: NODERAWFS and pthread support.
|
||||
|
||||
.. versionadded:: 3.11
|
||||
|
||||
.. cmdoption:: --enable-wasm-dynamic-linking
|
||||
|
||||
Turn on dynamic linking support for WASM.
|
||||
|
||||
Dynamic linking enables ``dlopen``. File size of the executable
|
||||
increases due to limited dead code elimination and additional features.
|
||||
|
||||
.. versionadded:: 3.11
|
||||
|
||||
|
||||
Install Options
|
||||
---------------
|
||||
|
|
|
|||
|
|
@ -0,0 +1,2 @@
|
|||
Add configure option :option:`--enable-wasm-dynamic-linking` to enable
|
||||
``dlopen`` and MAIN_MODULE / SIDE_MODULE on ``wasm32-emscripten``.
|
||||
|
|
@ -81,24 +81,31 @@ node --experimental-wasm-threads --experimental-wasm-bulk-memory builddir/emscri
|
|||
|
||||
## wasm32-emscripten limitations and issues
|
||||
|
||||
- Heap and stack are limited.
|
||||
- Most stdlib modules with a dependency on external libraries are missing:
|
||||
``ctypes``, ``readline``, ``sqlite3``, ``ssl``, and more.
|
||||
- Shared extension modules are not implemented yet. All extension modules
|
||||
are statically linked into the main binary.
|
||||
The experimental configure option ``--enable-wasm-dynamic-linking`` enables
|
||||
dynamic extensions.
|
||||
- Processes are not supported. System calls like fork, popen, and subprocess
|
||||
fail with ``ENOSYS`` or ``ENOSUP``.
|
||||
- Only ``AF_INET`` and ``AF_INET6`` with ``SOCK_STREAM`` (TCP) or
|
||||
``SOCK_DGRAM`` (UDP) are available. ``AF_UNIX`` is not supported.
|
||||
- ``socketpair`` does not work.
|
||||
- Blocking sockets are not available and non-blocking sockets don't work
|
||||
correctly, e.g. ``socket.accept`` crashes the runtime. ``gethostbyname``
|
||||
does not resolve to a real IP address. IPv6 is not available.
|
||||
- The ``select`` module is limited. ``select.select()`` crashes the runtime
|
||||
due to lack of exectfd support.
|
||||
- The ``*at`` variants of functions (e.g. ``openat``) are not available.
|
||||
The ``dir_fd`` argument of *os* module functions can't be used.
|
||||
- Signal support is limited. ``signal.alarm``, ``itimer``, ``sigaction``
|
||||
are not available or do not work correctly. ``SIGTERM`` exits the runtime.
|
||||
- Most user, group, and permission related function and modules are not
|
||||
supported or don't work as expected, e.g.``pwd`` module, ``grp`` module,
|
||||
``os.setgroups``, ``os.chown``, and so on.
|
||||
``os.setgroups``, ``os.chown``, and so on. ``lchown`` and `lchmod`` are
|
||||
not available.
|
||||
- ``umask`` is a no-op.
|
||||
- hard links (``os.link``) are not supported.
|
||||
- Offset and iovec I/O functions (e.g. ``os.pread``, ``os.preadv``) are not
|
||||
available.
|
||||
- ``os.mknod`` and ``os.mkfifo``
|
||||
|
|
@ -108,17 +115,9 @@ node --experimental-wasm-threads --experimental-wasm-bulk-memory builddir/emscri
|
|||
- ``mmap`` module is unstable. flush (``msync``) can crash the runtime.
|
||||
- Resource-related functions like ``os.nice`` and most functions of the
|
||||
``resource`` module are not available.
|
||||
- Some time and datetime features are broken. ``strftime`` and ``strptime``
|
||||
have known bugs, e.g.
|
||||
[%% quoting](https://github.com/emscripten-core/emscripten/issues/16155),
|
||||
[%U off-by-one](https://github.com/emscripten-core/emscripten/issues/16156).
|
||||
Extended glibc formatting features are not available.
|
||||
- glibc extensions for date and time formatting are not available.
|
||||
- ``locales`` module is affected by musl libc issues,
|
||||
[bpo-46390](https://bugs.python.org/issue46390).
|
||||
- ``uuid`` module is affected by
|
||||
[memory leak](https://github.com/emscripten-core/emscripten/issues/16081)
|
||||
and crasher in Emscripten's ``freeaddrinfo``,
|
||||
- Recursive ``glob`` leaks file descriptors.
|
||||
- Python's object allocator ``obmalloc`` is disabled by default.
|
||||
- ``ensurepip`` is not available.
|
||||
|
||||
|
|
|
|||
|
|
@ -91,7 +91,3 @@ ac_cv_func_linkat=no
|
|||
|
||||
# alarm signal is not delivered, may need a callback into the event loop?
|
||||
ac_cv_func_alarm=no
|
||||
|
||||
# To use dlopen, you need to use Emscripten's linking support,
|
||||
# see https://emscripten.org/docs/compiling/Dynamic-Linking.html
|
||||
ac_cv_func_dlopen=no
|
||||
|
|
|
|||
|
|
@ -1017,6 +1017,7 @@ with_framework_name
|
|||
enable_framework
|
||||
with_cxx_main
|
||||
with_emscripten_target
|
||||
enable_wasm_dynamic_linking
|
||||
with_suffix
|
||||
enable_shared
|
||||
with_static_libpython
|
||||
|
|
@ -1730,6 +1731,9 @@ Optional Features:
|
|||
Unix install. optional INSTALLDIR specifies the
|
||||
installation path. see Mac/README.rst (default is
|
||||
no)
|
||||
--enable-wasm-dynamic-linking
|
||||
Enable dynamic linking support for WebAssembly
|
||||
(default is no)
|
||||
--enable-shared enable building a shared Python library (default is
|
||||
no)
|
||||
--enable-profiling enable C-level code profiling with gprof (default is
|
||||
|
|
@ -6290,6 +6294,30 @@ fi
|
|||
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_sys_emscripten_target" >&5
|
||||
$as_echo "$ac_sys_emscripten_target" >&6; }
|
||||
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --enable-wasm-dynamic-linking" >&5
|
||||
$as_echo_n "checking for --enable-wasm-dynamic-linking... " >&6; }
|
||||
# Check whether --enable-wasm-dynamic-linking was given.
|
||||
if test "${enable_wasm_dynamic_linking+set}" = set; then :
|
||||
enableval=$enable_wasm_dynamic_linking;
|
||||
case $ac_sys_system in #(
|
||||
Emscripten) :
|
||||
;; #(
|
||||
WASI) :
|
||||
as_fn_error $? "WASI dynamic linking is not implemented yet." "$LINENO" 5 ;; #(
|
||||
*) :
|
||||
as_fn_error $? "--enable-wasm-dynamic-linking only applies to Emscripten and WASI" "$LINENO" 5
|
||||
;;
|
||||
esac
|
||||
|
||||
else
|
||||
|
||||
enable_wasm_dynamic_linking=missing
|
||||
|
||||
fi
|
||||
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_wasm_dynamic_linking" >&5
|
||||
$as_echo "$enable_wasm_dynamic_linking" >&6; }
|
||||
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-suffix" >&5
|
||||
$as_echo_n "checking for --with-suffix... " >&6; }
|
||||
|
||||
|
|
@ -7760,18 +7788,20 @@ then
|
|||
fi
|
||||
|
||||
# WASM flags
|
||||
# TODO: Add -s MAIN_MODULE=2 for dlopen() support.
|
||||
# The option disables code elimination, which increases code size of main
|
||||
# binary. All objects must be built with -fPIC.
|
||||
case $ac_sys_system/$ac_sys_emscripten_target in #(
|
||||
Emscripten/browser*) :
|
||||
|
||||
LDFLAGS_NODIST="$LDFLAGS_NODIST -s ALLOW_MEMORY_GROWTH=1"
|
||||
LINKFORSHARED="--preload-file \$(WASM_ASSETS_DIR)"
|
||||
LDFLAGS_NODIST="$LDFLAGS_NODIST -sALLOW_MEMORY_GROWTH=1"
|
||||
LINKFORSHARED="--preload-file=\$(WASM_ASSETS_DIR)"
|
||||
if test "x$enable_wasm_dynamic_linking" = xyes; then :
|
||||
|
||||
as_fn_append LINKFORSHARED " -sMAIN_MODULE=1"
|
||||
|
||||
fi
|
||||
WASM_ASSETS_DIR=".\$(prefix)"
|
||||
WASM_STDLIB="\$(WASM_ASSETS_DIR)/local/lib/python\$(VERSION)/os.py"
|
||||
if test "$Py_DEBUG" = 'true' -o "$ac_sys_emscripten_target" = "browser-debug"; then
|
||||
LDFLAGS_NODIST="$LDFLAGS_NODIST -s ASSERTIONS=1"
|
||||
LDFLAGS_NODIST="$LDFLAGS_NODIST -sASSERTIONS=1"
|
||||
LINKFORSHARED="$LINKFORSHARED -gsource-map --emit-symbol-map"
|
||||
else
|
||||
LINKFORSHARED="$LINKFORSHARED -O2 -g0"
|
||||
|
|
@ -7779,11 +7809,16 @@ case $ac_sys_system/$ac_sys_emscripten_target in #(
|
|||
;; #(
|
||||
Emscripten/node*) :
|
||||
|
||||
LDFLAGS_NODIST="$LDFLAGS_NODIST -s ALLOW_MEMORY_GROWTH=1 -s NODERAWFS=1 -s USE_PTHREADS=1"
|
||||
LINKFORSHARED="-s PROXY_TO_PTHREAD=1 -s EXIT_RUNTIME=1"
|
||||
LDFLAGS_NODIST="$LDFLAGS_NODIST -sALLOW_MEMORY_GROWTH=1 -sNODERAWFS=1 -sUSE_PTHREADS=1"
|
||||
LINKFORSHARED="-sPROXY_TO_PTHREAD=1 -sEXIT_RUNTIME=1"
|
||||
if test "x$enable_wasm_dynamic_linking" = xyes; then :
|
||||
|
||||
as_fn_append LINKFORSHARED " -sMAIN_MODULE=1"
|
||||
|
||||
fi
|
||||
CFLAGS_NODIST="$CFLAGS_NODIST -pthread"
|
||||
if test "$Py_DEBUG" = 'true' -o "$ac_sys_emscripten_target" = "node-debug"; then
|
||||
LDFLAGS_NODIST="$LDFLAGS_NODIST -s ASSERTIONS=1"
|
||||
LDFLAGS_NODIST="$LDFLAGS_NODIST -sASSERTIONS=1"
|
||||
LINKFORSHARED="$LINKFORSHARED -gseparate-dwarf --emit-symbol-map"
|
||||
else
|
||||
LINKFORSHARED="$LINKFORSHARED -O2 -g0"
|
||||
|
|
@ -7808,6 +7843,18 @@ $as_echo "#define _WASI_EMULATED_PROCESS_CLOCKS 1" >>confdefs.h
|
|||
;;
|
||||
esac
|
||||
|
||||
case $enable_wasm_dynamic_linking in #(
|
||||
yes) :
|
||||
ac_cv_func_dlopen=yes ;; #(
|
||||
no) :
|
||||
ac_cv_func_dlopen=no ;; #(
|
||||
missing) :
|
||||
|
||||
;; #(
|
||||
*) :
|
||||
;;
|
||||
esac
|
||||
|
||||
|
||||
|
||||
|
||||
|
|
@ -10469,10 +10516,6 @@ then
|
|||
Linux*|GNU*|QNX*|VxWorks*|Haiku*)
|
||||
LDSHARED='$(CC) -shared'
|
||||
LDCXXSHARED='$(CXX) -shared';;
|
||||
Emscripten*)
|
||||
LDSHARED='$(CC) -shared -s SIDE_MODULE=1'
|
||||
LDCXXSHARED='$(CXX) -shared -s SIDE_MODULE=1'
|
||||
;;
|
||||
FreeBSD*)
|
||||
if [ "`$CC -dM -E - </dev/null | grep __ELF__`" != "" ]
|
||||
then
|
||||
|
|
@ -10511,16 +10554,32 @@ then
|
|||
SCO_SV*)
|
||||
LDSHARED='$(CC) -Wl,-G,-Bexport'
|
||||
LDCXXSHARED='$(CXX) -Wl,-G,-Bexport';;
|
||||
WASI*)
|
||||
if test "x$enable_wasm_dynamic_linking" = xyes; then :
|
||||
|
||||
|
||||
fi;;
|
||||
CYGWIN*)
|
||||
LDSHARED="gcc -shared -Wl,--enable-auto-image-base"
|
||||
LDCXXSHARED="g++ -shared -Wl,--enable-auto-image-base";;
|
||||
*) LDSHARED="ld";;
|
||||
esac
|
||||
fi
|
||||
|
||||
if test "$enable_wasm_dynamic_linking" = "yes" -a "$ac_sys_system" = "Emscripten"; then
|
||||
BLDSHARED='$(CC) -shared -sSIDE_MODULE=1 -sWASM=1'
|
||||
fi
|
||||
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $LDSHARED" >&5
|
||||
$as_echo "$LDSHARED" >&6; }
|
||||
LDCXXSHARED=${LDCXXSHARED-$LDSHARED}
|
||||
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking BLDSHARED flags" >&5
|
||||
$as_echo_n "checking BLDSHARED flags... " >&6; }
|
||||
BLDSHARED=${BLDSHARED-$LDSHARED}
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $BLDSHARED" >&5
|
||||
$as_echo "$BLDSHARED" >&6; }
|
||||
|
||||
# CCSHARED are the C *flags* used to create objects to go into a shared
|
||||
# library (module) -- this is only needed for a few systems
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking CCSHARED" >&5
|
||||
|
|
@ -10540,6 +10599,12 @@ then
|
|||
fi;;
|
||||
Linux-android*) ;;
|
||||
Linux*|GNU*) CCSHARED="-fPIC";;
|
||||
Emscripten*|WASI*)
|
||||
if test "x$enable_wasm_dynamic_linking" = xyes; then :
|
||||
|
||||
CCSHARED="-fPIC"
|
||||
|
||||
fi;;
|
||||
FreeBSD*|NetBSD*|OpenBSD*|DragonFly*) CCSHARED="-fPIC";;
|
||||
Haiku*) CCSHARED="-fPIC";;
|
||||
OpenUNIX*|UnixWare*)
|
||||
|
|
@ -10647,6 +10712,13 @@ then
|
|||
CFLAGSFORSHARED='$(CCSHARED)'
|
||||
esac
|
||||
fi
|
||||
|
||||
if test "x$enable_wasm_dynamic_linking" = xyes; then :
|
||||
|
||||
CFLAGSFORSHARED='$(CCSHARED)'
|
||||
|
||||
fi
|
||||
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CFLAGSFORSHARED" >&5
|
||||
$as_echo "$CFLAGSFORSHARED" >&6; }
|
||||
|
||||
|
|
@ -15379,7 +15451,8 @@ $as_echo "yes" >&6; }
|
|||
fi
|
||||
|
||||
if test "$have_zlib" = "yes" -a "$ac_sys_system" = "Emscripten" -a "$ZLIB_LIBS" = "-lz"; then
|
||||
ZLIB_LIBS="-s USE_ZLIB=1"
|
||||
ZLIB_CFLAGS="-sUSE_ZLIB=1"
|
||||
ZLIB_LIBS="-sUSE_ZLIB=1"
|
||||
fi
|
||||
|
||||
if test "x$have_zlib" = xyes; then :
|
||||
|
|
@ -15612,7 +15685,8 @@ $as_echo "yes" >&6; }
|
|||
fi
|
||||
|
||||
if test "$have_bzip2" = "yes" -a "$ac_sys_system" = "Emscripten" -a "$BZIP2_LIBS" = "-lbz2"; then
|
||||
BZIP2_LIBS="-s USE_BZIP2=1"
|
||||
BZIP2_CFLAGS="-sUSE_BZIP2=1"
|
||||
BZIP2_LIBS="-sUSE_BZIP2=1"
|
||||
fi
|
||||
|
||||
|
||||
|
|
|
|||
81
configure.ac
81
configure.ac
|
|
@ -1107,6 +1107,25 @@ dnl are free to remove them in the future.
|
|||
])
|
||||
AC_MSG_RESULT([$ac_sys_emscripten_target])
|
||||
|
||||
dnl On Emscripten dlopen() requires -s MAIN_MODULE and -fPIC. The flags
|
||||
dnl disables dead code elimination and increases the size of the WASM module
|
||||
dnl by about 1.5 to 2MB. MAIN_MODULE defines __wasm_mutable_globals__.
|
||||
dnl See https://emscripten.org/docs/compiling/Dynamic-Linking.html
|
||||
AC_MSG_CHECKING([for --enable-wasm-dynamic-linking])
|
||||
AC_ARG_ENABLE([wasm-dynamic-linking],
|
||||
[AS_HELP_STRING([--enable-wasm-dynamic-linking],
|
||||
[Enable dynamic linking support for WebAssembly (default is no)])],
|
||||
[
|
||||
AS_CASE([$ac_sys_system],
|
||||
[Emscripten], [],
|
||||
[WASI], [AC_MSG_ERROR([WASI dynamic linking is not implemented yet.])],
|
||||
[AC_MSG_ERROR([--enable-wasm-dynamic-linking only applies to Emscripten and WASI])]
|
||||
)
|
||||
], [
|
||||
enable_wasm_dynamic_linking=missing
|
||||
])
|
||||
AC_MSG_RESULT([$enable_wasm_dynamic_linking])
|
||||
|
||||
AC_MSG_CHECKING([for --with-suffix])
|
||||
AC_ARG_WITH([suffix],
|
||||
[AS_HELP_STRING([--with-suffix=SUFFIX], [set executable suffix to SUFFIX (default is empty, yes is mapped to '.exe')])],
|
||||
|
|
@ -1890,29 +1909,32 @@ then
|
|||
fi
|
||||
|
||||
# WASM flags
|
||||
# TODO: Add -s MAIN_MODULE=2 for dlopen() support.
|
||||
# The option disables code elimination, which increases code size of main
|
||||
# binary. All objects must be built with -fPIC.
|
||||
AS_CASE([$ac_sys_system/$ac_sys_emscripten_target],
|
||||
[Emscripten/browser*], [
|
||||
LDFLAGS_NODIST="$LDFLAGS_NODIST -s ALLOW_MEMORY_GROWTH=1"
|
||||
LINKFORSHARED="--preload-file \$(WASM_ASSETS_DIR)"
|
||||
LDFLAGS_NODIST="$LDFLAGS_NODIST -sALLOW_MEMORY_GROWTH=1"
|
||||
LINKFORSHARED="--preload-file=\$(WASM_ASSETS_DIR)"
|
||||
AS_VAR_IF([enable_wasm_dynamic_linking], [yes], [
|
||||
AS_VAR_APPEND([LINKFORSHARED], [" -sMAIN_MODULE=1"])
|
||||
])
|
||||
WASM_ASSETS_DIR=".\$(prefix)"
|
||||
WASM_STDLIB="\$(WASM_ASSETS_DIR)/local/lib/python\$(VERSION)/os.py"
|
||||
dnl separate-dwarf does not seem to work in Chrome DevTools Support.
|
||||
if test "$Py_DEBUG" = 'true' -o "$ac_sys_emscripten_target" = "browser-debug"; then
|
||||
LDFLAGS_NODIST="$LDFLAGS_NODIST -s ASSERTIONS=1"
|
||||
LDFLAGS_NODIST="$LDFLAGS_NODIST -sASSERTIONS=1"
|
||||
LINKFORSHARED="$LINKFORSHARED -gsource-map --emit-symbol-map"
|
||||
else
|
||||
LINKFORSHARED="$LINKFORSHARED -O2 -g0"
|
||||
fi
|
||||
],
|
||||
[Emscripten/node*], [
|
||||
LDFLAGS_NODIST="$LDFLAGS_NODIST -s ALLOW_MEMORY_GROWTH=1 -s NODERAWFS=1 -s USE_PTHREADS=1"
|
||||
LINKFORSHARED="-s PROXY_TO_PTHREAD=1 -s EXIT_RUNTIME=1"
|
||||
LDFLAGS_NODIST="$LDFLAGS_NODIST -sALLOW_MEMORY_GROWTH=1 -sNODERAWFS=1 -sUSE_PTHREADS=1"
|
||||
LINKFORSHARED="-sPROXY_TO_PTHREAD=1 -sEXIT_RUNTIME=1"
|
||||
AS_VAR_IF([enable_wasm_dynamic_linking], [yes], [
|
||||
AS_VAR_APPEND([LINKFORSHARED], [" -sMAIN_MODULE=1"])
|
||||
])
|
||||
CFLAGS_NODIST="$CFLAGS_NODIST -pthread"
|
||||
if test "$Py_DEBUG" = 'true' -o "$ac_sys_emscripten_target" = "node-debug"; then
|
||||
LDFLAGS_NODIST="$LDFLAGS_NODIST -s ASSERTIONS=1"
|
||||
LDFLAGS_NODIST="$LDFLAGS_NODIST -sASSERTIONS=1"
|
||||
LINKFORSHARED="$LINKFORSHARED -gseparate-dwarf --emit-symbol-map"
|
||||
else
|
||||
LINKFORSHARED="$LINKFORSHARED -O2 -g0"
|
||||
|
|
@ -1927,6 +1949,12 @@ AS_CASE([$ac_sys_system/$ac_sys_emscripten_target],
|
|||
]
|
||||
)
|
||||
|
||||
AS_CASE([$enable_wasm_dynamic_linking],
|
||||
[yes], [ac_cv_func_dlopen=yes],
|
||||
[no], [ac_cv_func_dlopen=no],
|
||||
[missing], []
|
||||
)
|
||||
|
||||
AC_SUBST(BASECFLAGS)
|
||||
AC_SUBST(CFLAGS_NODIST)
|
||||
AC_SUBST(LDFLAGS_NODIST)
|
||||
|
|
@ -2929,10 +2957,6 @@ then
|
|||
Linux*|GNU*|QNX*|VxWorks*|Haiku*)
|
||||
LDSHARED='$(CC) -shared'
|
||||
LDCXXSHARED='$(CXX) -shared';;
|
||||
Emscripten*)
|
||||
LDSHARED='$(CC) -shared -s SIDE_MODULE=1'
|
||||
LDCXXSHARED='$(CXX) -shared -s SIDE_MODULE=1'
|
||||
;;
|
||||
FreeBSD*)
|
||||
if [[ "`$CC -dM -E - </dev/null | grep __ELF__`" != "" ]]
|
||||
then
|
||||
|
|
@ -2971,15 +2995,30 @@ then
|
|||
SCO_SV*)
|
||||
LDSHARED='$(CC) -Wl,-G,-Bexport'
|
||||
LDCXXSHARED='$(CXX) -Wl,-G,-Bexport';;
|
||||
WASI*)
|
||||
AS_VAR_IF([enable_wasm_dynamic_linking], [yes], [
|
||||
dnl not iplemented yet
|
||||
]);;
|
||||
CYGWIN*)
|
||||
LDSHARED="gcc -shared -Wl,--enable-auto-image-base"
|
||||
LDCXXSHARED="g++ -shared -Wl,--enable-auto-image-base";;
|
||||
*) LDSHARED="ld";;
|
||||
esac
|
||||
fi
|
||||
|
||||
dnl Emscripten's emconfigure sets LDSHARED. Set BLDSHARED outside the
|
||||
dnl test -z $LDSHARED block to configure BLDSHARED for side module support.
|
||||
if test "$enable_wasm_dynamic_linking" = "yes" -a "$ac_sys_system" = "Emscripten"; then
|
||||
BLDSHARED='$(CC) -shared -sSIDE_MODULE=1 -sWASM=1'
|
||||
fi
|
||||
|
||||
AC_MSG_RESULT($LDSHARED)
|
||||
LDCXXSHARED=${LDCXXSHARED-$LDSHARED}
|
||||
|
||||
AC_MSG_CHECKING([BLDSHARED flags])
|
||||
BLDSHARED=${BLDSHARED-$LDSHARED}
|
||||
AC_MSG_RESULT([$BLDSHARED])
|
||||
|
||||
# CCSHARED are the C *flags* used to create objects to go into a shared
|
||||
# library (module) -- this is only needed for a few systems
|
||||
AC_MSG_CHECKING(CCSHARED)
|
||||
|
|
@ -2998,6 +3037,10 @@ then
|
|||
fi;;
|
||||
Linux-android*) ;;
|
||||
Linux*|GNU*) CCSHARED="-fPIC";;
|
||||
Emscripten*|WASI*)
|
||||
AS_VAR_IF([enable_wasm_dynamic_linking], [yes], [
|
||||
CCSHARED="-fPIC"
|
||||
]);;
|
||||
FreeBSD*|NetBSD*|OpenBSD*|DragonFly*) CCSHARED="-fPIC";;
|
||||
Haiku*) CCSHARED="-fPIC";;
|
||||
OpenUNIX*|UnixWare*)
|
||||
|
|
@ -3099,6 +3142,12 @@ then
|
|||
CFLAGSFORSHARED='$(CCSHARED)'
|
||||
esac
|
||||
fi
|
||||
|
||||
dnl WASM dynamic linking requires -fPIC.
|
||||
AS_VAR_IF([enable_wasm_dynamic_linking], [yes], [
|
||||
CFLAGSFORSHARED='$(CCSHARED)'
|
||||
])
|
||||
|
||||
AC_MSG_RESULT($CFLAGSFORSHARED)
|
||||
|
||||
# SHLIBS are libraries (except -lc and -lm) to link to the python shared
|
||||
|
|
@ -4460,7 +4509,8 @@ PKG_CHECK_MODULES([ZLIB], [zlib >= 1.2.0], [
|
|||
])
|
||||
|
||||
if test "$have_zlib" = "yes" -a "$ac_sys_system" = "Emscripten" -a "$ZLIB_LIBS" = "-lz"; then
|
||||
ZLIB_LIBS="-s USE_ZLIB=1"
|
||||
ZLIB_CFLAGS="-sUSE_ZLIB=1"
|
||||
ZLIB_LIBS="-sUSE_ZLIB=1"
|
||||
fi
|
||||
|
||||
dnl binascii can use zlib for optimized crc32.
|
||||
|
|
@ -4482,7 +4532,8 @@ PKG_CHECK_MODULES([BZIP2], [bzip2], [have_bzip2=yes], [
|
|||
])
|
||||
|
||||
if test "$have_bzip2" = "yes" -a "$ac_sys_system" = "Emscripten" -a "$BZIP2_LIBS" = "-lbz2"; then
|
||||
BZIP2_LIBS="-s USE_BZIP2=1"
|
||||
BZIP2_CFLAGS="-sUSE_BZIP2=1"
|
||||
BZIP2_LIBS="-sUSE_BZIP2=1"
|
||||
fi
|
||||
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue