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Posted to commits@graphar.apache.org by "SYaoJun (via GitHub)" <gi...@apache.org> on 2026/02/13 15:49:14 UTC

[PR] feat(rust): enable rust can build on MacOS and change the arrow link … [incubator-graphar]

SYaoJun opened a new pull request, #857:
URL: https://github.com/apache/incubator-graphar/pull/857

   …path.
   
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   As discussions: https://github.com/apache/incubator-graphar/discussions/844
   
   On macOS, the Rust bindings couldn't find the Arrow path. So I implemented a generic solution that works on both macOS and Ubuntu.
   
   ### Reason for this PR
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   Explaining clearly why this change is beneficial is important for the reviewers to understand the context.
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Re: [PR] feat(rust): Enable Rust build on macOS and update Arrow linking [incubator-graphar]

Posted by "SYaoJun (via GitHub)" <gi...@apache.org>.
SYaoJun commented on PR #857:
URL: https://github.com/apache/incubator-graphar/pull/857#issuecomment-3920557869

   > BTW, I’d suggest avoiding force-pushes, since rewriting history can make it harder for maintainers to track what changed (and it may invalidate existing review comments).
   
   good suggestion. I will avoid forcing push code.


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Re: [PR] feat(rust): Enable Rust build on macOS and update Arrow linking [incubator-graphar]

Posted by "Sober7135 (via GitHub)" <gi...@apache.org>.
Sober7135 commented on code in PR #857:
URL: https://github.com/apache/incubator-graphar/pull/857#discussion_r2811065974


##########
rust/build.rs:
##########
@@ -63,6 +69,22 @@ fn build_graphar() -> Vec<PathBuf> {
         .define("CMAKE_BUILD_TYPE", cmake_build_type)
         .define("GRAPHAR_BUILD_STATIC", "ON")
         .define("GRAPHAR_ENABLE_SANITIZER", "OFF");
+
+    let arrow_prefix = if let Ok(arrow_home) = env::var("ARROW_HOME") {
+        Some(arrow_home)
+    } else if let Ok(arrow_lib) = pkg_config::probe_library("arrow") {
+        arrow_lib
+            .include_paths
+            .first()
+            .map(|path| path.parent().unwrap_or(path).to_string_lossy().to_string())

Review Comment:
   
   I think this method is somewhat heuristic. Maybe we should try using `pkg-config --variable=prefix arrow`. on my mac:
   
   <img width="306" height="59" alt="Image" src="https://github.com/user-attachments/assets/7f8ac684-1d55-4db1-abc4-46c3be005f02" />
   
   For using `pkg-config` crate:
   ```Rust
   pkg_config::get_variable("arrow", "prefix")
   ```



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Re: [PR] feat(rust): Enable Rust build on macOS and update Arrow linking [incubator-graphar]

Posted by "SYaoJun (via GitHub)" <gi...@apache.org>.
SYaoJun commented on PR #857:
URL: https://github.com/apache/incubator-graphar/pull/857#issuecomment-3909571575

   > > I noticed the Rust bindings don’t have a MacOS CI setup. Do you think this is necessary? Perhaps we could add a matrix configuration to the existing Rust Ubuntu CI to cover MacOS as well. @Sober7135
   > 
   > Yes.
   > 
   > But I think we should refactor the current CI (first?)—e.g., introduce a shared workflow (maybe setup_linux/windows/macos.yml) for installing dependencies, since the Python/C++/Rust CI dependencies are very similar. Alternatively, we could provide a Docker-based setup. We should open a new issue to track this.
   > 
   > Also, since it’s currently Chinese New Year, I think xiaokang may be on vacation, so we may need to wait for his input.
   > 
   > BTW, happy Lunar New Year! No rush on this.
   
   OK, best wish to you! There are many tasks to do in 2026.


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Re: [PR] feat(rust): Enable Rust build on macOS and update Arrow linking [incubator-graphar]

Posted by "SYaoJun (via GitHub)" <gi...@apache.org>.
SYaoJun commented on PR #857:
URL: https://github.com/apache/incubator-graphar/pull/857#issuecomment-3909574837

   PR has updated.


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Re: [PR] feat(rust): Enable Rust build on macOS and update Arrow linking [incubator-graphar]

Posted by "SYaoJun (via GitHub)" <gi...@apache.org>.
SYaoJun commented on PR #857:
URL: https://github.com/apache/incubator-graphar/pull/857#issuecomment-3906643334

   @Sober7135  could you please review the updated code again?


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Re: [PR] feat(rust): Enable Rust build on macOS and update Arrow linking [incubator-graphar]

Posted by "SYaoJun (via GitHub)" <gi...@apache.org>.
SYaoJun commented on PR #857:
URL: https://github.com/apache/incubator-graphar/pull/857#issuecomment-3908242164

   I noticed the Rust bindings don’t have a MacOS CI setup. Do you think this is necessary? Perhaps we could add a matrix configuration to the existing Rust Ubuntu CI to cover MacOS as well. @Sober7135 


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Re: [PR] feat(rust): Enable Rust build on macOS and update Arrow linking [incubator-graphar]

Posted by "Copilot (via GitHub)" <gi...@apache.org>.
Copilot commented on code in PR #857:
URL: https://github.com/apache/incubator-graphar/pull/857#discussion_r2806818660


##########
rust/build.rs:
##########
@@ -20,9 +20,25 @@
 use std::env;
 use std::path::{Path, PathBuf};
 
+/// Query a pkg-config variable for the `arrow` package.
+fn pkg_config_arrow(variable: &str) -> Option<String> {
+    std::process::Command::new("pkg-config")
+        .args([&format!("--variable={variable}"), "arrow"])
+        .output()
+        .ok()
+        .filter(|o| o.status.success())
+        .and_then(|o| String::from_utf8(o.stdout).ok())
+        .map(|s| s.trim().to_string())
+        .filter(|s| !s.is_empty())
+}
+
 fn link_libraries() {
-    // TODO: Link to system Arrow, `libarrow` is under `/usr/lib/x86_64-linux-gnu/` on Ubuntu
-    println!("cargo:rustc-link-search=native=/usr/lib/x86_64-linux-gnu/");
+    if let Some(dir) = pkg_config_arrow("libdir") {
+        println!("cargo:rustc-link-search=native={dir}");
+    } else if let Ok(dir) = env::var("ARROW_LIB_DIR") {
+        println!("cargo:rustc-link-search=native={dir}");
+    }

Review Comment:
   The `ARROW_LIB_DIR` environment variable is used to determine the library search path, but there's no corresponding `cargo:rerun-if-env-changed=ARROW_LIB_DIR` directive. This means that if a user changes the `ARROW_LIB_DIR` environment variable, the build script won't be re-executed, potentially causing the build to use stale library paths. Add `println!("cargo:rerun-if-env-changed=ARROW_LIB_DIR");` after line 40 to ensure the build script reruns when this environment variable changes.
   ```suggestion
       }
       println!("cargo:rerun-if-env-changed=ARROW_LIB_DIR");
   ```



##########
rust/build.rs:
##########
@@ -20,9 +20,25 @@
 use std::env;
 use std::path::{Path, PathBuf};
 
+/// Query a pkg-config variable for the `arrow` package.
+fn pkg_config_arrow(variable: &str) -> Option<String> {
+    std::process::Command::new("pkg-config")
+        .args([&format!("--variable={variable}"), "arrow"])
+        .output()
+        .ok()
+        .filter(|o| o.status.success())
+        .and_then(|o| String::from_utf8(o.stdout).ok())
+        .map(|s| s.trim().to_string())
+        .filter(|s| !s.is_empty())
+}
+
 fn link_libraries() {
-    // TODO: Link to system Arrow, `libarrow` is under `/usr/lib/x86_64-linux-gnu/` on Ubuntu
-    println!("cargo:rustc-link-search=native=/usr/lib/x86_64-linux-gnu/");
+    if let Some(dir) = pkg_config_arrow("libdir") {
+        println!("cargo:rustc-link-search=native={dir}");
+    } else if let Ok(dir) = env::var("ARROW_LIB_DIR") {
+        println!("cargo:rustc-link-search=native={dir}");

Review Comment:
   When `pkg-config` is unavailable or fails to find Arrow, and `ARROW_LIB_DIR` is also not set, the `link_libraries` function proceeds without setting any library search path. This will cause the linker to search only in system default paths, which may fail on systems where Arrow is installed in non-standard locations. Consider adding a warning or informational message when both pkg-config and ARROW_LIB_DIR fallbacks fail, to help users diagnose build issues. For example: `eprintln!("cargo:warning=Could not determine Arrow library directory via pkg-config or ARROW_LIB_DIR. Relying on system default library paths.");`
   ```suggestion
           println!("cargo:rustc-link-search=native={dir}");
       } else {
           eprintln!("cargo:warning=Could not determine Arrow library directory via pkg-config or ARROW_LIB_DIR. Relying on system default library paths.");
   ```



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Re: [PR] feat(rust): Enable Rust build on macOS and update Arrow linking [incubator-graphar]

Posted by "Sober7135 (via GitHub)" <gi...@apache.org>.
Sober7135 commented on PR #857:
URL: https://github.com/apache/incubator-graphar/pull/857#issuecomment-3920485419

   BTW, I’d suggest avoiding force-pushes, since rewriting history can make it harder for maintainers to track what changed (and it may invalidate existing review comments).


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Re: [PR] feat(rust): Enable Rust build on macOS and update Arrow linking [incubator-graphar]

Posted by "Sober7135 (via GitHub)" <gi...@apache.org>.
Sober7135 commented on PR #857:
URL: https://github.com/apache/incubator-graphar/pull/857#issuecomment-3909364137

   > I noticed the Rust bindings don’t have a MacOS CI setup. Do you think this is necessary? Perhaps we could add a matrix configuration to the existing Rust Ubuntu CI to cover MacOS as well. @Sober7135
   
   Yes.
   
   But I think we should refactor the current CI (first?)—e.g., introduce a shared workflow (maybe setup_linux/windows/macos.yml) for installing dependencies, since the Python/C++/Rust CI dependencies are very similar. Alternatively, we could provide a Docker-based setup. We should open a new issue to track this.
   
   Also, since it’s currently Chinese New Year, I think xiaokang may be on vacation, so we may need to wait for his input.
   
   BTW, happy Lunar New Year! No rush on this.


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Re: [PR] feat(rust): Enable Rust build on macOS and update Arrow linking [incubator-graphar]

Posted by "Sober7135 (via GitHub)" <gi...@apache.org>.
Sober7135 commented on code in PR #857:
URL: https://github.com/apache/incubator-graphar/pull/857#discussion_r2820843867


##########
rust/build.rs:
##########
@@ -63,6 +64,13 @@ fn build_graphar() -> Vec<PathBuf> {
         .define("CMAKE_BUILD_TYPE", cmake_build_type)
         .define("GRAPHAR_BUILD_STATIC", "ON")
         .define("GRAPHAR_ENABLE_SANITIZER", "OFF");
+
+    let arrow_prefix = pkg_config::get_variable("arrow", "prefix").ok();
+
+    if let Some(prefix) = arrow_prefix {
+        build.define("CMAKE_PREFIX_PATH", prefix);
+    }

Review Comment:
   ```Rust
   if let Ok(prefix) = pkg_config::get_variable("arrow", "prefix") {
       build.define("CMAKE_PREFIX_PATH", prefix);
   }
   ```
   For simplicity, this is better.



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Re: [PR] feat(rust): Enable Rust build on macOS and update Arrow linking [incubator-graphar]

Posted by "SYaoJun (via GitHub)" <gi...@apache.org>.
SYaoJun commented on PR #857:
URL: https://github.com/apache/incubator-graphar/pull/857#issuecomment-3908088027

   > Actually, I’m not very familiar with dependency handling, so this is a bit of an immature/personal suggestion.
   > 
   > Maybe we should rely fully on pkg-config, rather than `ARROW_HOME` and `ARROW_LIB_DIR`, since:
   > 
   > * Arrow always provides a *.pc file.
   > * We can get `CMAKE_PREFIX_PATH` via `pkg-config --variable=prefix arrow` (in Rust: `pkg_config::get_variable("arrow", "prefix")`).
   > * We can link Arrow via: `pkg_config::Config::new().statik(true).cargo_metadata(true)`
   > 
   > If the `*.pc` file isn’t in a standard location (e.g. `/usr/share/pkgconfig`), we can set `PKG_CONFIG_PATH`.
   > 
   > For example, if Arrow is installed at `/opt/arrow` and the `pkgconfig` files are under `/opt/arrow/lib64/pkgconfig`:
   > 
   > ```shell
   > export PKG_CONFIG_PATH="/opt/arrow/lib64/pkgconfig:${PKG_CONFIG_PATH}" # set `PKG_CONFIG_PATH`
   > pkg-config --variable=prefix arrow
   > # output: /opt/arrow
   > ```
   > 
   > Any thoughts?
   
   Your suggestion is really helpful. I'll follow your advice and implement a generic version of the code.


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Re: [PR] feat(rust): Enable Rust build on macOS and update Arrow linking [incubator-graphar]

Posted by "SYaoJun (via GitHub)" <gi...@apache.org>.
SYaoJun commented on PR #857:
URL: https://github.com/apache/incubator-graphar/pull/857#issuecomment-3901729925

   > Nice work! A couple of suggestions:
   > 
   > 1. We could use the `pkg-config` crate instead of invoking `process::Command` directly: https://crates.io/crates/pkg-config
   > 2. We should try `env::var("ARROW_LIB_DIR")` first. If it’s not set, then fall back to `pkg-config`. That seems more reasonable.
   
   Thank you for the enlightening suggestions! I have updated my PR accordingly.
   


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Re: [PR] feat(rust): Enable Rust build on macOS and update Arrow linking [incubator-graphar]

Posted by "Sober7135 (via GitHub)" <gi...@apache.org>.
Sober7135 commented on PR #857:
URL: https://github.com/apache/incubator-graphar/pull/857#issuecomment-3907252234

   Could you clarify the intended difference between `ARROW_HOME` and `ARROW_LIB_DIR`?
   
   For my understanding:
   - `ARROW_HOME` is mainly used to set `CMAKE_PREFIX_PATH` 
   - `ARROW_LIB_DIR` is mainly used for Rust linker search paths
   
   If that is correct, would it make sense to centralize Arrow resolution in a helper (e.g., `find_arrow()`), and return both `cmake_prefix` and link_paths.


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Re: [PR] feat(rust): Enable Rust build on macOS and update Arrow linking [incubator-graphar]

Posted by "Sober7135 (via GitHub)" <gi...@apache.org>.
Sober7135 commented on PR #857:
URL: https://github.com/apache/incubator-graphar/pull/857#issuecomment-3901650901

   Nice work! A couple of suggestions:
   
   1. We could use the `pkg-config` crate instead of invoking `process::Command` directly: https://crates.io/crates/pkg-config
   2. We should try `env::var("ARROW_LIB_DIR")` first. If it’s not set, then fall back to `pkg-config`. That seems more reasonable.


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Re: [PR] feat(rust): Enable Rust build on macOS and update Arrow linking [incubator-graphar]

Posted by "Sober7135 (via GitHub)" <gi...@apache.org>.
Sober7135 merged PR #857:
URL: https://github.com/apache/incubator-graphar/pull/857


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Re: [PR] feat(rust): Enable Rust build on macOS and update Arrow linking [incubator-graphar]

Posted by "Sober7135 (via GitHub)" <gi...@apache.org>.
Sober7135 commented on PR #857:
URL: https://github.com/apache/incubator-graphar/pull/857#issuecomment-3907885119

   Actually, I’m not very familiar with dependency handling, so this is a bit of an immature/personal suggestion.
   
   Maybe we should rely fully on pkg-config, rather than `ARROW_HOME` and `ARROW_LIB_DIR`, since:
   - Arrow always provides a *.pc file.
   - We can get `CMAKE_PREFIX_PATH` via `pkg-config --variable=prefix arrow` (in Rust: `pkg_config::get_variable("arrow", "prefix")`).
   - We can link Arrow via: `pkg_config::Config::new().statik(true).cargo_metadata(true)`
   
   If the `*.pc` file isn’t in a standard location (e.g. `/usr/share/pkgconfig`), we can set `PKG_CONFIG_PATH`.
   
   For example:
   For example, if Arrow is installed at `/opt/arrow` and the `pkgconfig` files are under `/opt/arrow/lib64/pkgconfig`:
   ```bash
   export PKG_CONFIG_PATH="/opt/arrow/lib64/pkgconfig:${PKG_CONFIG_PATH}" # set `PKG_CONFIG_PATH`
   pkg-config --variable=prefix arrow
   # output: /opt/arrow
   ```
   
   Any thoughts?


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Re: [PR] feat(rust): Enable Rust build on macOS and update Arrow linking [incubator-graphar]

Posted by "codecov-commenter (via GitHub)" <gi...@apache.org>.
codecov-commenter commented on PR #857:
URL: https://github.com/apache/incubator-graphar/pull/857#issuecomment-3897941328

   ## [Codecov](https://app.codecov.io/gh/apache/incubator-graphar/pull/857?dropdown=coverage&src=pr&el=h1&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache) Report
   :white_check_mark: All modified and coverable lines are covered by tests.
   :white_check_mark: Project coverage is 80.21%. Comparing base ([`02bd3fe`](https://app.codecov.io/gh/apache/incubator-graphar/commit/02bd3fe10a72436f21cf1da889172159273ae224?dropdown=coverage&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache)) to head ([`b4394a9`](https://app.codecov.io/gh/apache/incubator-graphar/commit/b4394a9592309ad103893e1672636c0d9306d5bd?dropdown=coverage&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache)).
   :warning: Report is 1 commits behind head on main.
   
   <details><summary>Additional details and impacted files</summary>
   
   
   
   ```diff
   @@            Coverage Diff            @@
   ##               main     #857   +/-   ##
   =========================================
     Coverage     80.21%   80.21%           
     Complexity      615      615           
   =========================================
     Files            93       93           
     Lines         10257    10257           
     Branches       1049     1049           
   =========================================
     Hits           8228     8228           
     Misses         1789     1789           
     Partials        240      240           
   ```
   </details>
   
   [:umbrella: View full report in Codecov by Sentry](https://app.codecov.io/gh/apache/incubator-graphar/pull/857?dropdown=coverage&src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache).   
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   </details>


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