From 4b163093abda47cc01d9866a94d7615b99a14a1b Mon Sep 17 00:00:00 2001
From: Maho Nakata <maho@FreeBSD.org>
Date: Thu, 12 Jul 2007 01:57:10 +0000
Subject: Add USE_FORTRAN knob. All ports that use FORTRAN should use this
 knob.

Approved by: gerald, portmgr (pav)
---
 Mk/bsd.gcc.mk  | 76 +++++++++++++++++++++++++++++++++++++++++-----------------
 Mk/bsd.port.mk |  2 +-
 2 files changed, 55 insertions(+), 23 deletions(-)

(limited to 'Mk')

diff --git a/Mk/bsd.gcc.mk b/Mk/bsd.gcc.mk
index 09977e1b99dd..b6ab72da1480 100644
--- a/Mk/bsd.gcc.mk
+++ b/Mk/bsd.gcc.mk
@@ -9,12 +9,25 @@
 # If your port needs a specific version of GCC, you can easily specify
 # that with the "USE_GCC=" statement. If you need a certain minimal version,
 # but don't care if about the upperversion, just the + sign behind
-# the version.
+# the version.  Note that the Fortran compiler is specified with the
+# USE_FORTRAN knob.
 #
 # For example:
 #	USE_GCC=	3.3		# port requires GCC 3.3 to build with.
 #	USE_GCC=	3.4+	# port requires GCC 3.4 or later to build with.
 #
+# If your port needs a Fortran compiler, please specify that with the
+# USE_FORTRAN= knob.  Here is the list of options for that knob:
+#
+#       USE_FORTRAN=	yes	# use gfortran42 (/lang/gcc42)
+#       USE_FORTRAN=	gfortran42
+#       USE_FORTRAN=	g77	# use g77-34 (lang/gcc34; FreeBSD>=7)
+#				# or system f77 (/usr/bin/f77; FreeBSD<=6)
+#	USE_FORTRAN=	ifort	# use the Intel compiler (lang/ifc)
+#
+# Due to object file incompatiblity between Fortran compilers, we strongly
+# recommend to use only one of them on any system.
+#
 # If you are wondering what your port exactly does, use "make test-gcc"
 # to see some debugging.
 #
@@ -51,8 +64,43 @@ GCCVERSION_040200=	700042 999999 4.2
 #
 
 #
-# See if we can use a later version
+# bsd.gcc.mk can also be used only for FC, F77 settings; in this case we
+# do not define USE_GCC.
 #
+
+.if defined (USE_FORTRAN)
+# gfortran42 from lang/gcc42 is the default for now.
+. if ${USE_FORTRAN} == yes || ${USE_FORTRAN} == gfortran42
+BUILD_DEPENDS+=	gfortran42:${PORTSDIR}/lang/gcc42
+FC:=	gfortran42
+F77:=	gfortran42
+. endif
+
+# Intel Fortran compiler from lang/ifc.
+. if ${USE_FORTRAN} == ifort
+BUILD_DEPENDS+=	${LOCALBASE}/intel_fc_80/bin/ifort:${PORTSDIR}/lang/ifc
+FC:=	${LOCALBASE}/intel_fc_80/bin/ifort
+F77:=	${LOCALBASE}/intel_fc_80/bin/ifort
+. endif
+
+# In some case we want to use g77 from lang/gcc34 (FreeBSD>=7) or f77
+# (FreeBSD<=6).
+. if ${USE_FORTRAN} == g77
+.  if (${OSVERSION} > 700000)
+BUILD_DEPENDS+=	g77-34:${PORTSDIR}/lang/gcc34
+FC:=	g77-34
+F77:=	g77-34
+.else
+F77:=	f77
+FC:=	f77
+.  endif
+. endif
+
+MAKE_ENV+=	 F77="${F77}" FC="${FC}"
+.endif
+
+.if defined(USE_GCC)
+# See if we can use a later version
 _USE_GCC:=	${USE_GCC:S/+//}
 .if ${USE_GCC} != ${_USE_GCC}
 _GCC_ORLATER:=	true
@@ -127,44 +175,27 @@ _USE_GCC:=${_GCC_FOUND}
 
 #
 # Determine if the installed OS already has this GCCVERSION, and if not
-# then set BUILD_DEPENDS, CC, CXX, F77, and FC.
+# then set BUILD_DEPENDS, CC, and CXX.
 #
 .for v in ${GCCVERSIONS}
 . if ${_USE_GCC} == ${_GCCVERSION_${v}_V}
 .  if ${OSVERSION} < ${_GCCVERSION_${v}_L} || ${OSVERSION} > ${_GCCVERSION_${v}_R}
-# If Fortran support is requested, regardless of the value of USE_GCC
-# we use lang/gcc42 which is the first release which features the new
-# Fortran frontend and has Fortran enabled by default.
-.   if defined(WITH_FORTRAN)
-V:=			42
-_GCC_BUILD_DEPENDS:=	gcc42
-_GCC_PORT_DEPENDS:=	gfortran${V}
-.else
 V:=			${_GCCVERSION_${v}_V:S/.//}
 _GCC_BUILD_DEPENDS:=	gcc${V}
 _GCC_PORT_DEPENDS:=	gcc${V}
-.   endif
 CC:=			gcc${V}
 CXX:=			g++${V}
-# Up to GCC 4.0, we had g77, g77-33, g77-34, and the like.  Starting
-# with GCC 4.0, we have gfortran, gfortran40, gfortran41, and the like.
-.   if ${_USE_GCC} < 4.0
-F77:=			g77-${V}
-FC:=			${F77}
-.   else
-FC:=			gfortran${V}
-F77:=			${FC}
-.   endif
 .  endif
 . endif
 .endfor
 .undef V
 
+
 .if defined(_GCC_BUILD_DEPENDS)
 BUILD_DEPENDS+=	${_GCC_PORT_DEPENDS}:${PORTSDIR}/lang/${_GCC_BUILD_DEPENDS}
 .endif
 
-MAKE_ENV+=	CC="${CC}" CXX="${CXX}" F77="${F77}" FC="${FC}"
+MAKE_ENV+=	CC="${CC}" CXX="${CXX}"
 
 test-gcc:
 	@echo USE_GCC=${USE_GCC}
@@ -184,3 +215,4 @@ test-gcc:
 .endfor
 	@echo Using GCC version ${_USE_GCC}
 	@echo CC:${CC} - CXX:${CXX} - F77:${F77} - FC:${FC} - BUILD_DEPENDS:${BUILD_DEPENDS}
+.endif
diff --git a/Mk/bsd.port.mk b/Mk/bsd.port.mk
index 12597cb6fa1f..cef3fccae2ed 100644
--- a/Mk/bsd.port.mk
+++ b/Mk/bsd.port.mk
@@ -1769,7 +1769,7 @@ BUILD_DEPENDS+=		gmake:${PORTSDIR}/devel/gmake
 CONFIGURE_ENV+=	MAKE=${GMAKE}
 .endif
 
-.if defined(USE_GCC)
+.if defined(USE_GCC) || defined(USE_FORTRAN)
 .include "${PORTSDIR}/Mk/bsd.gcc.mk"
 .endif
 
-- 
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