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From 8fc46d871639dbe799f6ff0a61b046412ef5dcc6 Mon Sep 17 00:00:00 2001
From: Martin Jansa <martin.jansa@gmail.com>
Date: Mon, 5 May 2025 08:16:30 +0200
Subject: [PATCH] build_support: handle empty max_priority value as None
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
When cross-compiling these tests they fail when the host cannot execute
the binaries built for target.
On my local ubuntu-22.04 docker container running
build_support/src/sniff_mq_prio_max results in:
posix_ipc-1.2.0 $ ./build_support/src/foo
bash: ./build_support/src/foo: cannot execute binary file: Exec format error
which triggers the Exception in compile_and_run and returns None
While on some other ubuntu-22.04 containers I see:
posix_ipc-1.2.0$ ./build_support/src/sniff_mq_prio_max
/usr/lib/ld-linux-aarch64.so.1: No such file or directory
and the compile_and_run returns
b''
which then causes
posix_ipc-1.2.0/build_support/discover_system_info.py", line 244, in sniff_mq_prio_max
if max_priority < 0:
^^^^^^^^^^^^^^^^
Handle the empty value the same as None to avoid this.
Signed-off-by: Martin Jansa <martin.jansa@gmail.com>
Upstream-Status: Submitted [https://github.com/osvenskan/posix_ipc/pull/77]
---
build_support/discover_system_info.py | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/build_support/discover_system_info.py b/build_support/discover_system_info.py
index 6d059d9..f8a3c83 100644
--- a/build_support/discover_system_info.py
+++ b/build_support/discover_system_info.py
@@ -223,7 +223,7 @@ def sniff_mq_prio_max():
except ValueError:
max_priority = None
- if max_priority is None:
+ if not max_priority:
# Looking for a #define didn't work; ask sysconf() instead.
# Note that sys.sysconf_names doesn't exist under Cygwin.
if hasattr(os, "sysconf_names") and \
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