linux-kernel - [PATCH v2 0/4] tools/nolibc: assorted fixes and small updates

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Message-Id: <20251102104611.24454-1-w@1wt.eu>
Date: Sun,  2 Nov 2025 11:46:07 +0100
From: Willy Tarreau <w@....eu>
To: linux@...ssschuh.net
Cc: shuah@...nel.org, linux-kernel@...r.kernel.org, Willy Tarreau <w@....eu>
Subject: [PATCH v2 0/4] tools/nolibc: assorted fixes and small updates

Trying to port a program to nolibc triggered a few trivial errors that                                       
are worth being addressed:                                                                                                                 
  - inttypes.h is missing, while being generally recommended over stdint.h                                                                 
    for being more portable. Here we add it, which simply includes stdint.h.                                                               
                                                                                                                                           
  - sys/select.h is supposed to be where struct fd_set and FD_CLR() etc                                                                    
    are defined. Till now it was still in types.h. Let's create the file                                                                   
    and move these definitions there.                                                                                                      
                                                                                                                                           
  - memchr() was still missing, thus a trivial one was added.                                                                              
                                                                                                                                           
Finally the help message from "make help" reported an inaccurate                                                                           
installation path, omitting the dependency on $OUTPUT. This was                                                                            
fixed as well.

---
v2:
  - rebase this old changeset onto latest updates from Thomas
  - moved select() definition do sys/select.h as well and include
    nolibc.h to avoid having just a dummy file like in v1

Willy Tarreau (4):
  tools/nolibc: fix misleading help message regarding installation path
  tools/nolibc: add the more portable inttypes.h
  tools/nolibc: add missing memchr() to string.h
  tools/nolibc: provide the portable sys/select.h

 tools/include/nolibc/Makefile                |   4 +-
 tools/include/nolibc/inttypes.h              |   8 ++
 tools/include/nolibc/nolibc.h                |   1 +
 tools/include/nolibc/string.h                |  15 +++
 tools/include/nolibc/sys.h                   |  45 --------
 tools/include/nolibc/sys/select.h            | 103 +++++++++++++++++++
 tools/include/nolibc/types.h                 |  47 ---------
 tools/testing/selftests/nolibc/nolibc-test.c |   2 +
 8 files changed, 132 insertions(+), 93 deletions(-)
 create mode 100644 tools/include/nolibc/inttypes.h
 create mode 100644 tools/include/nolibc/sys/select.h

-- 
2.17.5