--- auxdir/x_ac_pmix.m4	2021-03-22 14:11:09.167025991 +0100
+++ /tmp/x_ac_pmix.m4	2021-03-22 13:38:03.437550010 +0100
@@ -45,7 +45,7 @@
             _x_ac_pmix_libs_save="$LIBS"
             LIBS="-L$d/$d1 -lpmix $LIBS"
             AC_LINK_IFELSE(
-              [AC_LANG_CALL([], PMIx_Get_version)],
+              [AC_LANG_PROGRAM([[#include<pmix_common.h>]], [[(void)PMIx_Get_version()]])],
               AS_VAR_SET(x_ac_cv_pmix_dir, $d)
               AS_VAR_SET(x_ac_cv_pmix_libdir, $d/$d1))