Add gfortran workaround for ABI violations in LAPACKE
for (see gcc bug 90329)
@@ -744,6 +744,8 @@ CCOMMON_OPT += -DF_INTERFACE_GFORT
FCOMMON_OPT += -Wall
# make single-threaded LAPACK calls thread-safe #1847
FCOMMON_OPT += -frecursive
+# work around ABI problem with passing single-character arguments
+FCOMMON_OPT += -fno-optimize-sibling-calls
#Don't include -lgfortran, when NO_LAPACK=1 or lsbcc
ifneq ($(NO_LAPACK), 1)
EXTRALIB += -lgfortran
