[libc-commits] [libc] [libc][docs] Add net/if.h documentation by to referring POSIX standard (PR #122406)

[via libc-commits]

https://github.com/StarOne01 created https://github.com/llvm/llvm-project/pull/122406

This pull request introduces the following changes to the project:

1. **Documentation Update**:
   - Added a new YAML file `if.yaml`  under `net` to document network interface functions and macros.
   - The `if.yaml` file includes the following functions and macros:
     - Functions:
       - `if_freenameindex`
       - `if_indextoname`
       - `if_nameindex`
       - `if_nametoindex`
     - Macros:
       - `IF_NAMESIZE`

2. **CMake Configuration Update**:
   - Updated the `CMakeLists.txt` file to create the necessary directory for the `net` headers.
   - Included the `net/if` documentation in the Sphinx build configuration.

3. **Index Update**:
   - Updated the `index.rst` file to include a reference to the newly added `net/if` documentation.

**Purpose**:
- This pull request adds documentation for network interface functions and macros, ensuring they are included in the project's documentation.
- Updates the CMake configuration to support the new documentation.

**Testing**:
- Verified that the new YAML file is correctly referenced in the `index.rst`.
- Ensured that the documentation builds without errors and includes the new network interface documentation.

>From 608ad4a1dabb4fa0c91645aa04cb29bec8d86c57 Mon Sep 17 00:00:00 2001
From: Prashanth <TheStarOne01 at proton.me>
Date: Fri, 10 Jan 2025 01:50:59 +0000
Subject: [PATCH] Add net/if header documentation and update CMake
 configuration and include it in index

---
 libc/docs/CMakeLists.txt      |  2 ++
 libc/docs/headers/index.rst   |  1 +
 libc/utils/docgen/net/if.yaml | 13 +++++++++++++
 3 files changed, 16 insertions(+)
 create mode 100644 libc/utils/docgen/net/if.yaml

diff --git a/libc/docs/CMakeLists.txt b/libc/docs/CMakeLists.txt
index 5a3f8275bb932e..a21d8e563626c5 100644
--- a/libc/docs/CMakeLists.txt
+++ b/libc/docs/CMakeLists.txt
@@ -19,6 +19,7 @@ if (SPHINX_FOUND)
     file(MAKE_DIRECTORY
       "${CMAKE_CURRENT_BINARY_DIR}/headers/arpa/"
       "${CMAKE_CURRENT_BINARY_DIR}/headers/sys/"
+      "${CMAKE_CURRENT_BINARY_DIR}/headers/net/"
     )
 
     # Change sphinx to build from $build_dir/libc/docs/ rather than
@@ -40,6 +41,7 @@ if (SPHINX_FOUND)
       float
       inttypes
       locale
+      net/if
       setjmp
       signal
       stdbit
diff --git a/libc/docs/headers/index.rst b/libc/docs/headers/index.rst
index 07ab6dd9b26742..b78ae86e968d9a 100644
--- a/libc/docs/headers/index.rst
+++ b/libc/docs/headers/index.rst
@@ -14,6 +14,7 @@ Implementation Status
    inttypes
    locale
    math/index.rst
+   net/if
    search
    setjmp
    signal
diff --git a/libc/utils/docgen/net/if.yaml b/libc/utils/docgen/net/if.yaml
new file mode 100644
index 00000000000000..085d27b2bb94fa
--- /dev/null
+++ b/libc/utils/docgen/net/if.yaml
@@ -0,0 +1,13 @@
+functions:
+  if_freenameindex:
+    in-latest-posix: ''
+  if_indextoname:
+    in-latest-posix: ''
+  if_nameindex:
+    in-latest-posix: ''
+  if_nametoindex:
+    in-latest-posix: ''
+
+macros:
+  IF_NAMESIZE:
+    in-latest-posix: ''
\ No newline at end of file