Comments (5)
I thought the open source code defaulted to turning off Omnibus? We generally don't recommend using omnibus mode. Did you do something to explicitly enable it?
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I didn't turn it out explicitly but I can reproduce how it got turned on: by depending on an extension that in turn depends on a prebuilt_cxx_library
:
mkdir hello
touch hello/main.py
touch hello/main.cc
python_binary(
name="hello",
main_module="hello.main",
deps=[":hello_lib"],
)
python_library(
name="hello_lib",
srcs=["hello/main.py"],
visibility=["PUBLIC"],
deps=[":hello_ext"],
)
cxx_python_extension(
name="hello_ext",
srcs=["hello/main.cc"],
visibility=["PUBLIC"],
deps=[":pybind11"],
)
prebuilt_cxx_library(
name="pybind11",
header_dirs=["deps/include/"],
exported_headers=glob(["deps/include/pybind11/**/*.h"]),
header_only=True,
visibility=["PUBLIC"],
)
from buck2.
Omnibus is fairly experimental - it has advantages if you have absolutely huge C++ codebases, but normally can be safely turned off. Unfortunately our open source toolchain was defaulting to it being turned on, which was a mistake. I'm just putting up a diff which reads:
--- a/buck2/prelude/toolchains/python.bzl
+++ b/buck2/prelude/toolchains/python.bzl
@@ -62,7 +62,7 @@
make_pex_inplace = ctx.attrs.make_pex_inplace[RunInfo],
compile = RunInfo(args = ["echo", "COMPILEINFO"]),
package_style = "inplace",
- native_link_strategy = "merged",
+ native_link_strategy = "separate",
),
PythonPlatformInfo(name = "x86_64"),
]
Hopefully that resolves the problem by not using Omnibus.
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abd3850 applies that change - can you give it another go?
from buck2.
I can confirm that stops building libomnibus, thank you! I think the original bug (don't rewrite weak symbols to undefined symbols) is still valid so will leave closing of issue to you.
from buck2.
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