Merge pull request OpenMathLib#5540 from Thyre/support-flang-new-integer-8

Makefile: Recognize `-fdefault-integer-8` for LLVMs flang

Author: martin-frbg

Makefile.system

@@ -887,7 +887,7 @@ NO_BINARY_MODE  = 1
 BINARY_DEFINED  = 1
 ifdef INTERFACE64
 ifneq ($(INTERFACE64), 0)
-ifeq ($(F_COMPILER), GFORTRAN)
+ifeq ($(F_COMPILER), $(filter $(F_COMPILER),GFORTRAN FLANGNEW))
 FCOMMON_OPT +=  -fdefault-integer-8
 endif
 ifeq ($(F_COMPILER), FLANG)
@@ -902,7 +902,7 @@ NO_BINARY_MODE  = 1
 BINARY_DEFINED  = 1
 ifdef INTERFACE64
 ifneq ($(INTERFACE64), 0)
-ifeq ($(F_COMPILER), GFORTRAN)
+ifeq ($(F_COMPILER), $(filter $(F_COMPILER),GFORTRAN FLANGNEW))
 FCOMMON_OPT +=  -fdefault-integer-8
 endif
 ifeq ($(F_COMPILER), FLANG)
@@ -917,7 +917,7 @@ NO_BINARY_MODE  = 1
 BINARY_DEFINED  = 1
 ifdef INTERFACE64
 ifneq ($(INTERFACE64), 0)
-ifeq ($(F_COMPILER), GFORTRAN)
+ifeq ($(F_COMPILER), $(filter $(F_COMPILER),GFORTRAN FLANGNEW))
 FCOMMON_OPT +=  -fdefault-integer-8
 endif
 ifeq ($(F_COMPILER), FLANG)