linux-kernel - [tip: core/rcu] tools/nolibc: Fix position of -lgcc in the documented example

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Message-ID: <161313342475.23325.2973395003549310012.tip-bot2@tip-bot2>
Date:   Fri, 12 Feb 2021 12:37:04 -0000
From:   "tip-bot2 for Willy Tarreau" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Valentin Schneider <valentin.schneider@....com>,
        Mark Rutland <mark.rutland@....com>, Willy Tarreau <w@....eu>,
        "Paul E. McKenney" <paulmck@...nel.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: core/rcu] tools/nolibc: Fix position of -lgcc in the documented example

The following commit has been merged into the core/rcu branch of tip:

Commit-ID:     3c6ce7a5363723a05bfe3ee03a8d4a9b66841ae4
Gitweb:        https://git.kernel.org/tip/3c6ce7a5363723a05bfe3ee03a8d4a9b66841ae4
Author:        Willy Tarreau <w@....eu>
AuthorDate:    Thu, 21 Jan 2021 08:20:31 +01:00
Committer:     Paul E. McKenney <paulmck@...nel.org>
CommitterDate: Thu, 21 Jan 2021 10:06:45 -08:00

tools/nolibc: Fix position of -lgcc in the documented example

The documentation header in the nolibc.h file provides an example command
line, but it places the -lgcc argument before the source files, which
can fail with libgcc.a (e.g. on ARM when uidiv is needed). This commit
therefore moves the -lgcc to the end of the command line, hopefully
before this example leaks into makefiles.  This is a port of nolibc's
upstream commit b5e282089223 to the Linux kernel.

Fixes: 66b6f755ad45 ("rcutorture: Import a copy of nolibc")
Tested-by: Valentin Schneider <valentin.schneider@....com>
Tested-by: Mark Rutland <mark.rutland@....com> [arm64]
Signed-off-by: Willy Tarreau <w@....eu>
Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
 tools/include/nolibc/nolibc.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/include/nolibc/nolibc.h b/tools/include/nolibc/nolibc.h
index 618acad..8b7a983 100644
--- a/tools/include/nolibc/nolibc.h
+++ b/tools/include/nolibc/nolibc.h
@@ -71,7 +71,7 @@
  *
  * A simple static executable may be built this way :
  *      $ gcc -fno-asynchronous-unwind-tables -fno-ident -s -Os -nostdlib \
- *            -static -include nolibc.h -lgcc -o hello hello.c
+ *            -static -include nolibc.h -o hello hello.c -lgcc
  *
  * A very useful calling convention table may be found here :
  *      http://man7.org/linux/man-pages/man2/syscall.2.html