Build Failure Due to Undefined Reference to close_range with alsa-lib 1.2.15

[darkshram]

Description

I encountered a build failure while compiling alsa-lib 1.2.15 due to an undefined reference to close_range. My environment uses glibc 2.30, which should support this function.

Error Message

ucm/.libs/libucm.a(ucm_exec.o): In function `uc_mgr_exec':
/builddir/build/BUILD/alsa-lib-1.2.15/src/ucm/ucm_exec.c:263: undefined reference to `close_range'
collect2: error: ld returned 1 exit status

Solution

To resolve the issue, I applied the following patch, which effectively reverses the change that introduced close_range:

diff -Naur alsa-lib-1.2.15.orig/src/ucm/ucm_exec.c alsa-lib-1.2.15/src/ucm/ucm_exec.c
--- alsa-lib-1.2.15.orig/src/ucm/ucm_exec.c     2025-12-07 13:41:56.000000000 -0600
+++ alsa-lib-1.2.15/src/ucm/ucm_exec.c  2025-12-08 15:03:30.632324127 -0600
@@ -259,12 +259,8 @@
                close(f);

-#if defined(_GNU_SOURCE)
-               close_range(3, maxfd, 0);
-#else
                for (f = 3; f < maxfd; f++)
                        close(f);
-#endif

                /* install default handlers for the forked process */
                signal(SIGINT, SIG_DFL);

This workaround restored compatibility and allowed the build to complete successfully.

Additional Information

Please consider this issue for further review. If close_range is required, clearer compatibility notes might be beneficial. Thank you!