Index: /issm/trunk-jpl/m4/issm_options.m4
===================================================================
--- /issm/trunk-jpl/m4/issm_options.m4	(revision 25646)
+++ /issm/trunk-jpl/m4/issm_options.m4	(revision 25647)
@@ -206,11 +206,11 @@
 
 	if test "${IS_MAC}" == "yes"; then
-		AC_MSG_CHECKING([if system lib.c has fmemopen])
+		AC_MSG_CHECKING([if system libc has fmemopen])
 		if [[ $(system_profiler SPSoftwareDataType | $(which grep) "System Version:" | sed -e "s/[[:space:]]*System Version: macOS //" | cut -d "." -f 2) -ge 13 ]]; then
 			SYSTEM_FMEMOPEN="yes"
-			AC_DEFINE([_SYSTEM_FMEMOPEN_], [1], [does system lib.c have fmemopen])
+			AC_DEFINE([_SYSTEM_FMEMOPEN_], [1], [does system libc have fmemopen])
 		else
 			SYSTEM_FMEMOPEN="no"
-			AC_DEFINE([_SYSTEM_FMEMOPEN_], [0], [does system lib.c have fmemopen])
+			AC_DEFINE([_SYSTEM_FMEMOPEN_], [0], [does system libc have fmemopen])
 		fi
 		AM_CONDITIONAL([SYSTEM_HAS_FMEMOPEN], [test "${SYSTEM_FMEMOPEN}" == "yes"])
Index: /issm/trunk-jpl/src/c/Makefile.am
===================================================================
--- /issm/trunk-jpl/src/c/Makefile.am	(revision 25646)
+++ /issm/trunk-jpl/src/c/Makefile.am	(revision 25647)
@@ -25,5 +25,5 @@
 #GLIBC sources {{{
 if MAC
-if !SYSTEM_FMEMOPEN
+if !SYSTEM_HAS_FMEMOPEN
 issm_sources += \
 	./ext/fmemopen/fmemopen.c