1 files changed, 26 insertions, 1 deletions

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