new file mode 100644
@@ -0,0 +1,50 @@
+From 09cfcf7de2aab873a13949d5a128ccfb9e54732d Mon Sep 17 00:00:00 2001
+From: Martin Jansa <martin.jansa@gmail.com>
+Date: Mon, 5 May 2025 08:15:37 +0200
+Subject: [PATCH] build_support: use source filename instead of 'foo' for
+ discover tests
+
+* helps when debugging the issues
+* use the same order of CC arguments in compile_and_run and
+ does_build_succeed just for consistency
+* use pthread in both compile_and_run and does_build_succeed functions
+ it was added only to does_build_succeed in 5ec39f7af8cfd8525d225b1302fa93f7133b3849
+ not sure if it was intentional
+
+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 | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/build_support/discover_system_info.py b/build_support/discover_system_info.py
+index bc4d174..6d059d9 100644
+--- a/build_support/discover_system_info.py
++++ b/build_support/discover_system_info.py
+@@ -60,7 +60,7 @@ def does_build_succeed(filename, linker_options=""):
+ # Rather than testing whether or not it's needed, I just specify it
+ # everywhere since it's harmless to specify it when it's not needed.
+ cc = os.getenv("CC", "cc")
+- cmd = "%s -Wall -o ./build_support/src/foo ./build_support/src/%s %s -lpthread" % (cc, filename, linker_options)
++ cmd = "%s -Wall -o ./build_support/src/%s ./build_support/src/%s %s -lpthread" % (cc, filename[:-2], filename, linker_options)
+
+ p = subprocess.Popen(cmd, shell=True, stdout=STDOUT, stderr=STDERR)
+
+@@ -73,7 +73,7 @@ def compile_and_run(filename, linker_options=""):
+ # Utility function that returns the stdout output from running the
+ # compiled source file; None if the compile fails.
+ cc = os.getenv("CC", "cc")
+- cmd = "%s -Wall -o ./build_support/src/foo %s ./build_support/src/%s" % (cc, linker_options, filename)
++ cmd = "%s -Wall -o ./build_support/src/%s ./build_support/src/%s %s -lpthread" % (cc, filename[:-2], filename, linker_options)
+
+ p = subprocess.Popen(cmd, shell=True, stdout=STDOUT, stderr=STDERR)
+
+@@ -82,7 +82,7 @@ def compile_and_run(filename, linker_options=""):
+ return None
+
+ try:
+- s = subprocess.Popen(["./build_support/src/foo"],
++ s = subprocess.Popen(["./build_support/src/%s" % filename[:-2]],
+ stdout=subprocess.PIPE).communicate()[0]
+ return s.strip().decode()
+ except Exception:
new file mode 100644
@@ -0,0 +1,49 @@
+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 \
new file mode 100644
@@ -0,0 +1,62 @@
+From 760374e778fc28193cfea1416a739e206f9201c6 Mon Sep 17 00:00:00 2001
+From: Martin Jansa <martin.jansa@gmail.com>
+Date: Mon, 5 May 2025 08:28:56 +0200
+Subject: [PATCH] build_support: use does_build_succeed in compile_and_run
+
+* avoid the duplication and building the sniff_mq_prio_max.c twice
+
+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 | 27 ++++++++++-----------------
+ 1 file changed, 10 insertions(+), 17 deletions(-)
+
+diff --git a/build_support/discover_system_info.py b/build_support/discover_system_info.py
+index f8a3c83..f6e6c8c 100644
+--- a/build_support/discover_system_info.py
++++ b/build_support/discover_system_info.py
+@@ -72,22 +72,17 @@ def does_build_succeed(filename, linker_options=""):
+ def compile_and_run(filename, linker_options=""):
+ # Utility function that returns the stdout output from running the
+ # compiled source file; None if the compile fails.
+- cc = os.getenv("CC", "cc")
+- cmd = "%s -Wall -o ./build_support/src/%s ./build_support/src/%s %s -lpthread" % (cc, filename[:-2], filename, linker_options)
+-
+- p = subprocess.Popen(cmd, shell=True, stdout=STDOUT, stderr=STDERR)
+-
+- if p.wait():
++ if does_build_succeed(filename, linker_options=""):
++ try:
++ s = subprocess.Popen(["./build_support/src/%s" % filename[:-2]],
++ stdout=subprocess.PIPE).communicate()[0]
++ return s.strip().decode()
++ except Exception:
++ # execution resulted in an error
++ return None
++ else:
+ # uh-oh, compile failed
+ return None
+-
+- try:
+- s = subprocess.Popen(["./build_support/src/%s" % filename[:-2]],
+- stdout=subprocess.PIPE).communicate()[0]
+- return s.strip().decode()
+- except Exception:
+- # execution resulted in an error
+- return None
+
+
+ def get_sysctl_value(name):
+@@ -211,11 +206,9 @@ def sniff_mq_prio_max():
+ # ref: http://www.opengroup.org/onlinepubs/009695399/basedefs/limits.h.html
+ DEFAULT_PRIORITY_MAX = 32
+
+- max_priority = None
+ # OS X up to and including 10.8 doesn't support POSIX messages queues and
+ # doesn't define MQ_PRIO_MAX. Maybe this aggravation will cease in 10.9?
+- if does_build_succeed("sniff_mq_prio_max.c"):
+- max_priority = compile_and_run("sniff_mq_prio_max.c")
++ max_priority = compile_and_run("sniff_mq_prio_max.c")
+
+ if max_priority:
+ try:
@@ -9,4 +9,9 @@ UPSTREAM_CHECK_PYPI_PACKAGE = "${PYPI_PACKAGE}"
SRC_URI[sha256sum] = "b7444e2703c156b3cb9fcb568e85d716232f3e78f04529ebc881cfb2aedb3838"
+SRC_URI += " \
+ file://0001-build_support-use-source-filename-instead-of-foo-for.patch \
+ file://0002-build_support-handle-empty-max_priority-value-as-Non.patch \
+ file://0003-build_support-use-does_build_succeed-in-compile_and_.patch \
+"
inherit pypi python_setuptools_build_meta