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Code Issues Releases Activity

gh-126691: Remove --with-emscripten-target (#126787)

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This unifies the code for nodejs and the code for the browser. After this
commit, the browser example doesn't work; this will be fixed in a
subsequent update.
This commit is contained in:
Hood Chatham 2024-11-16 02:44:05 +01:00 committed by GitHub
parent d6bcc154e9
commit 544b001b23
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GPG Key ID: B5690EEEBB952194
6 changed files with 38 additions and 173 deletions
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9
Doc/using/configure.rst
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@ -454,15 +454,6 @@ Options for third-party dependencies
WebAssembly Options
-------------------
.. option:: --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
.. option:: --enable-wasm-dynamic-linking
Turn on dynamic linking support for WASM.

3
Misc/NEWS.d/next/Build/2024-11-13-15-47-09.gh-issue-126691.ni4K-b.rst Normal file
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@ -0,0 +1,3 @@
Removed the ``--with-emscripten-target`` configure flag. We unified the
``node`` and ``browser`` options and the same build can now be used, independent
of target runtime.

6
Tools/wasm/README.md
View File

@ -21,12 +21,6 @@ https://github.com/psf/webassembly for more information.
### Build
For now the build system has two target flavors. The ``Emscripten/browser``
target (``--with-emscripten-target=browser``) is optimized for browsers.
It comes with a reduced and preloaded stdlib without tests and threading
support. The ``Emscripten/node`` target has threading enabled and can
access the file system directly.
To cross compile to the ``wasm32-emscripten`` platform you need
[the Emscripten compiler toolchain](https://emscripten.org/),
a Python interpreter, and an installation of Node version 18 or newer. Emscripten

10
Tools/wasm/emscripten/node_pre.js
View File

@ -1,9 +1,15 @@
// If process is undefined, we're not running in the node runtime let it go I
// guess?
if (typeof process !== "undefined") {
const nodeVersion = Number(process.versions.node.split('.',1)[0]);
const nodeVersion = Number(process.versions.node.split(".", 1)[0]);
if (nodeVersion < 18) {
process.stderr.write(`Node version must be >= 18, got version ${process.version}\n`);
process.stderr.write(
`Node version must be >= 18, got version ${process.version}\n`,
);
process.exit(1);
}
Module.preRun = () => {
FS.mkdirTree("/lib/");
FS.mount(NODEFS, { root: __dirname + "/lib/" }, "/lib/");
};
}

110
configure generated vendored
View File

@ -1082,7 +1082,6 @@ with_universal_archs
with_framework_name
enable_framework
with_app_store_compliance
with_emscripten_target
enable_wasm_dynamic_linking
enable_wasm_pthreads
with_suffix
@ -1868,8 +1867,6 @@ Optional Packages:
Enable any patches required for compiliance with app
stores. Optional PATCH-FILE specifies the custom
patch to apply.
--with-emscripten-target=[browser|node]
Emscripten platform
--with-suffix=SUFFIX set executable suffix to SUFFIX (default is empty,
yes is mapped to '.exe')
--without-static-libpython
@ -7223,48 +7220,6 @@ case $ac_sys_system/$ac_sys_release in #(
;;
esac
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --with-emscripten-target" >&5
printf %s "checking for --with-emscripten-target... " >&6; }
# Check whether --with-emscripten-target was given.
if test ${with_emscripten_target+y}
then :
withval=$with_emscripten_target;
if test "x$ac_sys_system" = xEmscripten
then :
case $with_emscripten_target in #(
browser) :
ac_sys_emscripten_target=browser ;; #(
node) :
ac_sys_emscripten_target=node ;; #(
browser-debug) :
ac_sys_emscripten_target=browser-debug ;; #(
node-debug) :
ac_sys_emscripten_target=node-debug ;; #(
*) :
as_fn_error $? "Invalid argument: --with-emscripten-target=browser|node" "$LINENO" 5
;;
esac
else $as_nop
as_fn_error $? "--with-emscripten-target only applies to Emscripten" "$LINENO" 5
fi
else $as_nop
if test "x$ac_sys_system" = xEmscripten
then :
ac_sys_emscripten_target=browser
fi
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_sys_emscripten_target" >&5
printf "%s\n" "$ac_sys_emscripten_target" >&6; }
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for --enable-wasm-dynamic-linking" >&5
printf %s "checking for --enable-wasm-dynamic-linking... " >&6; }
# Check whether --enable-wasm-dynamic-linking was given.
@ -7334,12 +7289,10 @@ esac
else $as_nop
case $ac_sys_system/$ac_sys_emscripten_target in #(
Emscripten/browser*) :
case $ac_sys_system in #(
Emscripten) :
EXEEXT=.js ;; #(
Emscripten/node*) :
EXEEXT=.js ;; #(
WASI/*) :
WASI) :
EXEEXT=.wasm ;; #(
*) :
EXEEXT=
@ -7674,8 +7627,8 @@ printf %s "checking HOSTRUNNER... " >&6; }
if test -z "$HOSTRUNNER"
then
case $ac_sys_system/$ac_sys_emscripten_target in #(
Emscripten/node*) :
case $ac_sys_system in #(
Emscripten) :
if test -n "$ac_tool_prefix"; then
# Extract the first word of "${ac_tool_prefix}node", so it can be a program name with args.
@ -7791,7 +7744,7 @@ then :
as_fn_append HOSTRUNNER " --experimental-wasm-memory64"
fi
;; #(
WASI/*) :
WASI) :
HOSTRUNNER='wasmtime run --wasm max-wasm-stack=16777216 --wasi preview2=n --env PYTHONPATH=/$(shell realpath --relative-to $(abs_srcdir) $(abs_builddir))/$(shell cat pybuilddir.txt):/Lib --dir $(srcdir)::/' ;; #(
*) :
HOSTRUNNER=''
@ -7807,13 +7760,8 @@ if test -n "$HOSTRUNNER"; then
fi
# LIBRARY_DEPS, LINK_PYTHON_OBJS and LINK_PYTHON_DEPS variable
case $ac_sys_system/$ac_sys_emscripten_target in #(
Emscripten/browser*) :
LIBRARY_DEPS='$(PY3LIBRARY) $(WASM_STDLIB) python.html python.worker.js' ;; #(
*) :
LIBRARY_DEPS='$(PY3LIBRARY) $(EXPORTSYMS)'
;;
esac
LIBRARY_DEPS='$(PY3LIBRARY) $(EXPORTSYMS)'
LINK_PYTHON_DEPS='$(LIBRARY_DEPS)'
if test "$PY_ENABLE_SHARED" = 1 || test "$enable_framework" ; then
LIBRARY_DEPS="\$(LDLIBRARY) $LIBRARY_DEPS"
@ -9500,34 +9448,10 @@ then :
as_fn_append LINKFORSHARED " -sPROXY_TO_PTHREAD"
fi
case $ac_sys_emscripten_target in #(
browser*) :
if test "x$ac_sys_emscripten_target" = xbrowser-debug
then :
wasm_debug=yes
fi
as_fn_append LINKFORSHARED " --preload-file=\$(WASM_ASSETS_DIR)"
WASM_ASSETS_DIR=".\$(prefix)"
WASM_STDLIB="\$(WASM_ASSETS_DIR)/local/lib/python\$(VERSION)/os.py"
WASM_LINKFORSHARED_DEBUG="-gsource-map --emit-symbol-map"
;; #(
node*) :
if test "x$ac_sys_emscripten_target" = xnode-debug
then :
wasm_debug=yes
fi
as_fn_append LDFLAGS_NODIST " --pre-js=\$(srcdir)/Tools/wasm/emscripten/node_pre.js"
as_fn_append LDFLAGS_NODIST " -sALLOW_MEMORY_GROWTH -sNODERAWFS"
as_fn_append LINKFORSHARED " -sEXIT_RUNTIME"
WASM_LINKFORSHARED_DEBUG="-gseparate-dwarf --emit-symbol-map"
;; #(
*) :
;;
esac
as_fn_append LDFLAGS_NODIST " -sALLOW_MEMORY_GROWTH"
as_fn_append LDFLAGS_NODIST " -sEXIT_RUNTIME"
as_fn_append LDFLAGS_NODIST " --pre-js=\$(srcdir)/Tools/wasm/emscripten/node_pre.js"
WASM_LINKFORSHARED_DEBUG="-gseparate-dwarf --emit-symbol-map"
if test "x$wasm_debug" = xyes
then :
@ -29058,15 +28982,7 @@ else $as_nop
fi
else $as_nop
case $ac_sys_system/$ac_sys_emscripten_target in #(
Emscripten/browser*) :
TEST_MODULES=no ;; #(
*) :
TEST_MODULES=yes
;;
esac
TEST_MODULES=yes
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $TEST_MODULES" >&5

73
configure.ac
View File

@ -1282,30 +1282,6 @@ AS_CASE([$ac_sys_system/$ac_sys_release],
]
)
AC_MSG_CHECKING([for --with-emscripten-target])
AC_ARG_WITH([emscripten-target],
[AS_HELP_STRING([--with-emscripten-target=@<:@browser|node@:>@], [Emscripten platform])],
[
AS_VAR_IF([ac_sys_system], [Emscripten], [
AS_CASE([$with_emscripten_target],
[browser], [ac_sys_emscripten_target=browser],
[node], [ac_sys_emscripten_target=node],
dnl Debug builds with source map / dwarf symbols. Py_DEBUG builds easily
dnl run out of stack space. Detached sybmols and map prohibit some
dnl optimizations and increase file size. Options are undocumented so we
dnl are free to remove them in the future.
[browser-debug], [ac_sys_emscripten_target=browser-debug],
[node-debug], [ac_sys_emscripten_target=node-debug],
[AC_MSG_ERROR([Invalid argument: --with-emscripten-target=browser|node])]
)
], [
AC_MSG_ERROR([--with-emscripten-target only applies to Emscripten])
])
], [
AS_VAR_IF([ac_sys_system], [Emscripten], [ac_sys_emscripten_target=browser])
])
AC_MSG_RESULT([$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__.
@ -1350,10 +1326,9 @@ AC_ARG_WITH([suffix],
[EXEEXT=$with_suffix]
)
], [
AS_CASE([$ac_sys_system/$ac_sys_emscripten_target],
[Emscripten/browser*], [EXEEXT=.js],
[Emscripten/node*], [EXEEXT=.js],
[WASI/*], [EXEEXT=.wasm],
AS_CASE([$ac_sys_system],
[Emscripten], [EXEEXT=.js],
[WASI], [EXEEXT=.wasm],
[EXEEXT=]
)
])
@ -1638,8 +1613,8 @@ AC_MSG_CHECKING([HOSTRUNNER])
AC_ARG_VAR([HOSTRUNNER], [Program to run CPython for the host platform])
if test -z "$HOSTRUNNER"
then
AS_CASE([$ac_sys_system/$ac_sys_emscripten_target],
[Emscripten/node*], [
AS_CASE([$ac_sys_system],
[Emscripten], [
AC_PATH_TOOL([NODE], [node], [node])
HOSTRUNNER="$NODE"
AS_VAR_IF([host_cpu], [wasm64], [AS_VAR_APPEND([HOSTRUNNER], [" --experimental-wasm-memory64"])])
@ -1647,7 +1622,7 @@ then
dnl TODO: support other WASI runtimes
dnl wasmtime starts the process with "/" as CWD. For OOT builds add the
dnl directory containing _sysconfigdata to PYTHONPATH.
[WASI/*], [HOSTRUNNER='wasmtime run --wasm max-wasm-stack=16777216 --wasi preview2=n --env PYTHONPATH=/$(shell realpath --relative-to $(abs_srcdir) $(abs_builddir))/$(shell cat pybuilddir.txt):/Lib --dir $(srcdir)::/'],
[WASI], [HOSTRUNNER='wasmtime run --wasm max-wasm-stack=16777216 --wasi preview2=n --env PYTHONPATH=/$(shell realpath --relative-to $(abs_srcdir) $(abs_builddir))/$(shell cat pybuilddir.txt):/Lib --dir $(srcdir)::/'],
[HOSTRUNNER='']
)
fi
@ -1660,10 +1635,8 @@ if test -n "$HOSTRUNNER"; then
fi
# LIBRARY_DEPS, LINK_PYTHON_OBJS and LINK_PYTHON_DEPS variable
AS_CASE([$ac_sys_system/$ac_sys_emscripten_target],
[Emscripten/browser*], [LIBRARY_DEPS='$(PY3LIBRARY) $(WASM_STDLIB) python.html python.worker.js'],
[LIBRARY_DEPS='$(PY3LIBRARY) $(EXPORTSYMS)']
)
LIBRARY_DEPS='$(PY3LIBRARY) $(EXPORTSYMS)'
LINK_PYTHON_DEPS='$(LIBRARY_DEPS)'
if test "$PY_ENABLE_SHARED" = 1 || test "$enable_framework" ; then
LIBRARY_DEPS="\$(LDLIBRARY) $LIBRARY_DEPS"
@ -2365,24 +2338,11 @@ AS_CASE([$ac_sys_system],
AS_VAR_APPEND([LDFLAGS_NODIST], [" -sUSE_PTHREADS"])
AS_VAR_APPEND([LINKFORSHARED], [" -sPROXY_TO_PTHREAD"])
])
AS_CASE([$ac_sys_emscripten_target],
[browser*], [
AS_VAR_IF([ac_sys_emscripten_target], [browser-debug], [wasm_debug=yes])
AS_VAR_APPEND([LINKFORSHARED], [" --preload-file=\$(WASM_ASSETS_DIR)"])
WASM_ASSETS_DIR=".\$(prefix)"
WASM_STDLIB="\$(WASM_ASSETS_DIR)/local/lib/python\$(VERSION)/os.py"
dnl separate-dwarf does not seem to work in Chrome DevTools Support.
WASM_LINKFORSHARED_DEBUG="-gsource-map --emit-symbol-map"
],
[node*], [
AS_VAR_IF([ac_sys_emscripten_target], [node-debug], [wasm_debug=yes])
AS_VAR_APPEND([LDFLAGS_NODIST], [" --pre-js=\$(srcdir)/Tools/wasm/emscripten/node_pre.js"])
AS_VAR_APPEND([LDFLAGS_NODIST], [" -sALLOW_MEMORY_GROWTH -sNODERAWFS"])
AS_VAR_APPEND([LINKFORSHARED], [" -sEXIT_RUNTIME"])
WASM_LINKFORSHARED_DEBUG="-gseparate-dwarf --emit-symbol-map"
]
)
AS_VAR_APPEND([LDFLAGS_NODIST], [" -sALLOW_MEMORY_GROWTH"])
dnl not completely sure whether or not we want -sEXIT_RUNTIME, keeping it for now.
AS_VAR_APPEND([LDFLAGS_NODIST], [" -sEXIT_RUNTIME"])
AS_VAR_APPEND([LDFLAGS_NODIST], [" --pre-js=\$(srcdir)/Tools/wasm/emscripten/node_pre.js"])
WASM_LINKFORSHARED_DEBUG="-gseparate-dwarf --emit-symbol-map"
AS_VAR_IF([wasm_debug], [yes], [
AS_VAR_APPEND([LDFLAGS_NODIST], [" -sASSERTIONS"])
@ -7463,12 +7423,7 @@ AC_MSG_CHECKING([for --disable-test-modules])
AC_ARG_ENABLE([test-modules],
[AS_HELP_STRING([--disable-test-modules], [don't build nor install test modules])], [
AS_VAR_IF([enable_test_modules], [yes], [TEST_MODULES=yes], [TEST_MODULES=no])
], [
AS_CASE([$ac_sys_system/$ac_sys_emscripten_target],
[Emscripten/browser*], [TEST_MODULES=no],
[TEST_MODULES=yes]
)
])
], [TEST_MODULES=yes])
AC_MSG_RESULT([$TEST_MODULES])
AC_SUBST([TEST_MODULES])