From 8012afcabbc912e32961924a77858e334ee75356 Mon Sep 17 00:00:00 2001
From: Martin Kroeker <martin@ruby.chemie.uni-freiburg.de>
Date: Sun, 24 Sep 2023 10:15:12 +0200
Subject: [PATCH] Avoid using some gcc-specific flags with IBM xlf

---
 Makefile.power | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/Makefile.power b/Makefile.power
index 28a0bae08..33702c932 100644
--- a/Makefile.power
+++ b/Makefile.power
@@ -42,15 +42,14 @@ FCOMMON_OPT += -O2 -qrecur -qnosave
 else
 FCOMMON_OPT += -O2 -frecursive -fno-fast-math
 endif
-ifeq ($(C_COMPILER), GCC)
+
+ifeq ($(F_COMPILER), GFORTRAN)
 ifneq ($(GCCVERSIONGT4), 1)
 $(warning your compiler is too old to fully support POWER9, getting a newer version of gcc is recommended)
 FCOMMON_OPT += -mcpu=power8 -mtune=power8 
 else
 FCOMMON_OPT += -mcpu=power9 -mtune=power9 
 endif
-else
-FCOMMON_OPT += -mcpu=power9 -mtune=power9
 endif
 else
 FCOMMON_OPT += -O2 -Mrecursive
@@ -84,12 +83,16 @@ CCOMMON_OPT += -DUSE_OPENMP -fopenmp
 else
 CCOMMON_OPT += -DUSE_OPENMP -mp
 endif
+ifeq ($(F_COMPILER), IBM)
+FCOMMON_OPT += -DUSE_OPENMP 
+else
 ifneq ($(F_COMPILER), PGI)
 FCOMMON_OPT += -DUSE_OPENMP -fopenmp
 else
 FCOMMON_OPT += -DUSE_OPENMP -mp
 endif
 endif
+endif
 
 # workaround for C->FORTRAN ABI violation in LAPACKE
 ifeq ($(F_COMPILER), GFORTRAN)