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From f49e6094a5504a697f7dcc29096db294326f09af Mon Sep 17 00:00:00 2001
From: HougeLangley <hougelangley1987@gmail.com>
Date: Sat, 17 Oct 2026 08:24:31 +0800
Subject: [PATCH] ALSA: run the hotplug regression test under CTest only
The hotplug regression test added in 6.1.0 was wired as an ALL custom
target that the library target also depends on, so it ran on every
build - including 'cmake --install'. The test probes the real ALSA
sequencer (/dev/snd/seq): packaging sandboxes and CI cannot open it,
and the abort kills the install (Gentoo Portage: ACCESS DENIED
/dev/snd/seq, RtMidiError, src_install dies). It also ran regardless
of RTMIDI_BUILD_TESTING.
- only call rtmidi_add_hotplug_test() when RTMIDI_BUILD_TESTING is on,
with the other test programs
- drop ALL from the rtmidi_hotplug_check custom target and drop its
add_dependencies() on the library, so the test runs via CTest (or on
demand with 'cmake --build . --target rtmidi_hotplug_check'), never
during the default build or install
Verified with -DRTMIDI_BUILD_TESTING=no (no test target, clean
DESTDIR install, no sequencer access) and with the default (test
fixture builds, build and install do not probe the sequencer,
'ctest -R rtmidi_alsahotplug' passes).
---
CMakeLists.txt | 14 ++++++++------
tests/AlsaHotplug.cmake | 7 +++++--
2 files changed, 13 insertions(+), 8 deletions(-)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index b4ca1015..5a80b9c1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -362,12 +362,6 @@ if(RTMIDI_BUILD_MODULES)
endif()
endif()
-# Compile and run hotplug regression tests whenever the ALSA library is built.
-if("alsa" IN_LIST API_LIST)
- include(tests/AlsaHotplug.cmake)
- rtmidi_add_hotplug_test(rtmidi "${CMAKE_CURRENT_SOURCE_DIR}")
-endif()
-
# Add tests if requested.
option(RTMIDI_BUILD_TESTING "Build test programs" ON)
if (NOT DEFINED RTMIDI_BUILD_TESTING OR RTMIDI_BUILD_TESTING STREQUAL "")
@@ -397,6 +391,14 @@ if(RTMIDI_BUILD_TESTING)
set_tests_properties(cgetmessage PROPERTIES SKIP_RETURN_CODE 77)
add_test(NAME sysexinterleaved COMMAND sysexinterleaved)
set_tests_properties(sysexinterleaved PROPERTIES SKIP_RETURN_CODE 77)
+ # The ALSA hotplug regression test probes the real ALSA sequencer, so it
+ # builds with the other test programs and runs under CTest only - never
+ # as part of the default build or of 'install' (packaging sandboxes and
+ # CI have no usable /dev/snd/seq; Gentoo Portage aborts src_install on it).
+ if("alsa" IN_LIST API_LIST)
+ include(tests/AlsaHotplug.cmake)
+ rtmidi_add_hotplug_test(rtmidi "${CMAKE_CURRENT_SOURCE_DIR}")
+ endif()
endif()
# Set standard installation directories.
diff --git a/tests/AlsaHotplug.cmake b/tests/AlsaHotplug.cmake
index 8cce9675..afbb70b3 100644
--- a/tests/AlsaHotplug.cmake
+++ b/tests/AlsaHotplug.cmake
@@ -23,9 +23,12 @@ function(rtmidi_add_hotplug_test library source_dir)
enable_testing()
add_test(NAME rtmidi_alsahotplug COMMAND rtmidi_alsahotplug)
set_tests_properties(rtmidi_alsahotplug PROPERTIES SKIP_RETURN_CODE 77 TIMEOUT 30)
- add_custom_target(rtmidi_hotplug_check ALL
+ # Deliberately not in ALL and not a dependency of the library: this runs the
+ # test against the real ALSA sequencer, which is not available in packaging
+ # sandboxes or CI. Run it on demand (`cmake --build . --target
+ # rtmidi_hotplug_check`) or through CTest.
+ add_custom_target(rtmidi_hotplug_check
COMMAND "${CMAKE_COMMAND}" "-DTEST_EXECUTABLE=$<TARGET_FILE:rtmidi_alsahotplug>"
-P "${source_dir}/tests/RunAlsaHotplug.cmake"
DEPENDS rtmidi_alsahotplug VERBATIM)
- add_dependencies(${library} rtmidi_hotplug_check)
endfunction()
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