The mtx tests use atomic-int-isoc.h, which uses <semaphore.h>. It therefore
needs this patch:
2024-06-03 Bruno Haible <br...@clisp.org>
mtx tests: Fix a possible link error.
* modules/mtx-tests (Files): Add m4/semaphore.m4.
(configure.ac): Require gl_SEMAPHORE.
(Makefile.am): Link test-mtx with @LIB_SEMAPHORE@.
diff --git a/modules/mtx-tests b/modules/mtx-tests
index 063a56d67f..323d392087 100644
--- a/modules/mtx-tests
+++ b/modules/mtx-tests
@@ -2,6 +2,7 @@ Files:
tests/test-mtx.c
tests/atomic-int-isoc.h
tests/macros.h
+m4/semaphore.m4
Depends-on:
thrd
@@ -12,8 +13,9 @@ random
configure.ac:
AC_CHECK_HEADERS_ONCE([semaphore.h])
AC_CHECK_DECLS_ONCE([alarm])
+AC_REQUIRE([gl_SEMAPHORE])
Makefile.am:
TESTS += test-mtx
check_PROGRAMS += test-mtx
-test_mtx_LDADD = $(LDADD) @LIBSTDTHREAD@ @LIBTHREAD@
+test_mtx_LDADD = $(LDADD) @LIBSTDTHREAD@ @LIBTHREAD@ @LIB_SEMAPHORE@
