From ec0bf480229353c6de8c1836bd16fb31f4d26f58 Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <kwojtus@protonmail.com>
Date: Sun, 2 Jun 2019 12:51:14 +0200
Subject: support 2 compilers

---
 Makefile | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 2d9a5ea..a0d7d51 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,31 @@
+ifneq ($(FC), ifort)
+ifneq ($(FC), gfortran)
+
+ifneq ($(shell which ifort 2>/dev/null),)
+FC = ifort
+endif
+
+ifneq ($(shell which gfortran 2>/dev/null),)
 FC = gfortran
+endif
+
+endif
+endif
+
+
+ifndef FFLAGS
+
+ifeq ($(FC), gfortran)
 FFLAGS = -std=f2008 -Wall -pedantic -fbounds-check -fimplicit-none \
-	 -I/usr/include -lfftw3 -lm
+	 -ffree-form -O2 -I/usr/include -lfftw3 -lm
+endif
+
+ifeq ($(FC), ifort)
+FFLAGS = -std08  -module . -implicitnone -pedantic -check bounds \
+	 -O2 -I/usr/include -lfftw3 -lm
+endif
+
+endif
 
 all : fourier
 
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