script: document SIGUSR1

[thirdparty/util-linux.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 34923e349d3708766160cbcce2b7e70eaa7b4c7c..c96022b1fe06122ae3fe56e5943ee1a7eba3510e 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -497,6 +497,8 @@ AC_CHECK_FUNCS([ \
        nanosleep \
        ntp_gettime \
        personality \
+       pidfd_open \
+       pidfd_send_signal \
        posix_fadvise \
        prctl \
        qsort_r \
@@ -539,6 +541,9 @@ AS_IF([test "x$ul_cv_syscall_setns" = xno], [
    have_setns_syscall="no"
 ])
 
+UL_CHECK_SYSCALL([pidfd_open])
+UL_CHECK_SYSCALL([pidfd_send_signal])
+
 AC_CHECK_FUNCS([isnan], [],
        [AC_CHECK_LIB([m], [isnan], [MATH_LIBS="-lm"])]
        [AC_CHECK_LIB([m], [__isnan], [MATH_LIBS="-lm"])]