- Fix pthread_setname detection to fail on warnings.

configure

@@ -19092,6 +19092,8 @@ then :
 
 fi
 
+	BAKCFLAGS="$CFLAGS"
+	CFLAGS="$CFLAGS -Werror"
 	# MacOS only has 1 argument, the name.
 	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether pthread_setname_np has only 1 argument" >&5
 printf %s "checking whether pthread_setname_np has only 1 argument... " >&6; }
@@ -19240,6 +19242,7 @@ printf "%s\n" "no" >&6; }
 
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext
+	CFLAGS="$BAKCFLAGS"
 fi
 
 # check solaris thread library

configure.ac

@@ -736,6 +736,8 @@ if test x_$ub_have_pthreads != x_no; then
 	# Some OSes have the extra non-portable functions in a specific
 	# header file.
 	AC_CHECK_HEADERS([pthread_np.h],,, [AC_INCLUDES_DEFAULT])
+	BAKCFLAGS="$CFLAGS"
+	CFLAGS="$CFLAGS -Werror"
 	# MacOS only has 1 argument, the name.
 	AC_MSG_CHECKING([whether pthread_setname_np has only 1 argument])
 	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
@@ -796,6 +798,7 @@ if test x_$ub_have_pthreads != x_no; then
 	],[
 	    AC_MSG_RESULT(no)
 	])
+	CFLAGS="$BAKCFLAGS"
 fi
 
 # check solaris thread library

doc/Changelog

@@ -17,6 +17,7 @@
 	- Fix subnet store of servfail to not leak memory.
 	- Update generated man pages.
 	- Update generated configure, with autoconf.
+	- Fix pthread_setname detection to fail on warnings.
 
 17 April 2026: Yorgos
 	- Merge #1400: Support pthread_setname_np. Adds support for