dongjoon-hyun commented on code in PR #2249:
URL: https://github.com/apache/orc/pull/2249#discussion_r2136861282
##########
README.md:
##########
@@ -115,3 +115,43 @@ Cmake option BUILD_ENABLE_AVX512 can be set to "ON" or
(default value)"OFF" at t
Environment variable ORC_USER_SIMD_LEVEL can be set to "AVX512" or (default
value)"NONE" at the run time. At run time, it defines the SIMD level to
dispatch the code which can apply SIMD optimization.
Note that if ORC_USER_SIMD_LEVEL is set to "NONE" at run time, AVX512 will not
take effect at run time even if BUILD_ENABLE_AVX512 is set to "ON" at compile
time.
+
+### Building with Meson
+
+While CMake is the official build system for orc, there is unofficial support
for using Meson to build select parts of the project. To build a debug version
of the library and test it using Meson, from the project root you can run:
+
+```shell
+meson setup builddir
Review Comment:
1. To be consistent with the existing build directory of this `README.md`,
please use `build` instead of `builddir`.
2. Otherwise, we need to add `builddir` to `.gitignore` additionally. So, we
prefer (1).
```
$ git status
On branch add-meson
Untracked files:
(use "git add <file>..." to include in what will be committed)
builddir/
```
3. We need to update `build_and_test.yml` file together with `build`.
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