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fix pgml conflicts with plpython#931

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Merged
levkk merged 3 commits intopostgresml:masterfromSasasu:sa/fix_plpy
Aug 28, 2023
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2 changes: 1 addition & 1 deletion.github/workflows/ubuntu-packages-and-docker-image.yml
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Original file line numberDiff line numberDiff line change
Expand Up@@ -88,7 +88,7 @@ jobs:
libpython3.10-dev \
python3.10-dev \
ruby \
mold
lld

curl -sLO https://github.com/deb-s3/deb-s3/releases/download/0.11.4/deb-s3-0.11.4.gem
sudo gem install deb-s3-0.11.4.gem
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Expand Up@@ -278,7 +278,7 @@ postgresql-server-dev-${POSTGRES_VERSION}
python3
python3-pip
libpython3
mold
lld
```

##### Rust
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4 changes: 2 additions & 2 deletionspgml-extension/.cargo/config
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Expand Up@@ -3,7 +3,7 @@
rustflags = ["-C", "link-args=-Wl,-undefined,dynamic_lookup"]

[target.x86_64-unknown-linux-gnu]
rustflags = ["-C", "link-args=-Wl,-undefined,dynamic_lookup,-fuse-ld=/usr/bin/mold"]
rustflags = ["-C", "link-args=-Wl,-undefined,dynamic_lookup,-fuse-ld=lld"]

[target.aarch64-unknown-linux-gnu]
rustflags = ["-C", "link-args=-Wl,-undefined,dynamic_lookup,-fuse-ld=/usr/bin/mold"]
rustflags = ["-C", "link-args=-Wl,-undefined,dynamic_lookup,-fuse-ld=lld"]
12 changes: 12 additions & 0 deletionspgml-extension/build.rs
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Expand Up@@ -4,4 +4,16 @@ fn main() {
println!("cargo:rustc-link-search=/opt/homebrew/opt/openblas/lib");
println!("cargo:rustc-link-search=/opt/homebrew/opt/libomp/lib");
}

// PostgreSQL is using dlopen(RTLD_GLOBAL). this will parse some
// of symbols into the previous opened .so file, but the others will use a
// relative offset in pgml.so, and will cause a null-pointer crash.
//
// hid all symbol to avoid symbol conflicts.
//
// append mode (link-args) only works with clang ld (lld)
println!(
"cargo:link-args=-Wl,--version-script={}/ld.map",
std::env::current_dir().unwrap().to_string_lossy(),
);
}
8 changes: 8 additions & 0 deletionspgml-extension/ld.map
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@@ -0,0 +1,8 @@
{
global:
Pg_magic_func;
_PG_init;
*_wrapper;
local:
*;
};
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