From owner-freebsd-ports@FreeBSD.ORG  Thu Jan 11 00:49:39 2007
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Date: Thu, 11 Jan 2007 09:48:54 +0900 (JST)
Message-Id: <20070111.094854.115975485.chat95@mac.com>
To: ports@freebsd.org, portmgr@freebsd.org
From: NAKATA Maho <chat95@mac.com>
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Sender: Maho NAKATA <maho.nakata@gmail.com>
Cc: 
Subject: Linking against BLAS/LAPACK and optimized BLAS - ATLAS (was Re:
 Migration tips for gfortran42)
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Hi here is some tips again

* Linking blas/lapack or atlas
.if exists(${LOCALBASE}/lib/libatlas_r.so) && !defined(WITH_BLAS)
WITH_ATLAS=     yes
.endif
.if defined(WITH_ATLAS)
LIB_DEPENDS+=   atlas.2:${PORTSDIR}/math/atlas
BLAS=		-lf77blas -latlas
LAPACK=		-lalapack
.else
LIB_DEPENDS+=   blas.2:${PORTSDIR}/math/blas
LIB_DEPENDS+=   lapack.4:${PORTSDIR}/math/lapack
BLAS_LIBS=      -lblas
LAPACK=		-lalapack
.endif

atlas build is very fragile and CPU/platform dependent. and
pointyhat doesn't build usually and I think atlas from packagecluster
can also be unusbale or low performance
for some cases (if you have 4 CPU and if package cluster have 2 CPU)  
using LAPACK/BLAS is good for package building for casual users.

thanks,
-- NAKATA, Maho (maho@FreeBSD.org)