summaryrefslogtreecommitdiff
blob: 9a8240b59e5588ec9732aca9a7a4f80b18899ef6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
# Copyright 1999-2006 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sci-libs/lapack-atlas/lapack-atlas-3.6.0.ebuild,v 1.10 2006/08/17 00:45:07 markusle Exp $

inherit eutils flag-o-matic toolchain-funcs

DESCRIPTION="Full LAPACK implementation using available ATLAS routines"
HOMEPAGE="http://math-atlas.sourceforge.net/"
MY_PN=${PN/lapack-/}
SRC_URI1="mirror://sourceforge/math-atlas/${MY_PN}${PV}.tar.bz2"
SRC_URI2="http://www.netlib.org/lapack/lapack.tgz"
SRC_URI="${SRC_URI1} ${SRC_URI2}
	mirror://gentoo/lapack-20020531-20021004.patch.bz2
	mirror://gentoo/lapack-gentoo.patch
	mirror://gentoo/${MY_PN}3.6.0-shared-libs.patch.bz2"

LICENSE="BSD"
SLOT="0"
KEYWORDS="~alpha amd64 ppc ppc64 sparc x86"
IUSE="ifc doc"

DEPEND="virtual/libc
	>=sys-devel/libtool-1.5
	~sci-libs/blas-atlas-3.6.0
	sci-libs/lapack-config
	ifc? ( dev-lang/ifc )"

RDEPEND="virtual/libc
	virtual/blas
	ifc? ( dev-lang/ifc )" # Need Intel runtime libraries

PROVIDE="virtual/lapack"

S=${WORKDIR}/ATLAS
S_LAPACK=${WORKDIR}/LAPACK

TOP_PATH="${DESTTREE}/lib/lapack"
# Path where libraries will be installed:
RPATH="${TOP_PATH}/atlas"

ifc_info() {
	if [ -z "${IFCFLAGS}" ]
	then
		einfo
		einfo "You may want to set some ifc optimization flags by running this"
		einfo "ebuild as, for example:"
		einfo
		einfo "IFCFLAGS=\"-O3 -tpp7 -xW\" emerge lapack-atlas"
		einfo "(Pentium 4 exclusive optimizations)."
		einfo
		einfo "ifc defaults to -O2, with code tuned for Pentium 4, but that"
		einfo "will run on any processor."
		einfo
		einfo "Beware that ifc's -O3 is very aggressive, sometimes resulting in"
		einfo "significantly worse performance."
		einfo
	fi
}

pkg_setup() {
	# We need g77 to compile the LAPACK routines from ATLAS.
	# `use ifc` only causes the non-ATLAS routines (from the
	#  reference set) to be built with ifc.
	if [ -z `which g77` ]; then
		eerror "g77 not found on the system!"
		eerror "Please add fortran to your USE flags and reemerge gcc!"
		die
	fi
}

src_unpack() {
	use ifc && ifc_info
	unpack ${A}

	cd ${WORKDIR}
	epatch ${FILESDIR}/unbuffered.patch
	epatch ${DISTDIR}/atlas3.6.0-shared-libs.patch.bz2
	epatch ${DISTDIR}/lapack-20020531-20021004.patch.bz2
	epatch ${DISTDIR}/lapack-gentoo.patch
	cp ${FILESDIR}/war ${S}
	chmod a+x ${S}/war
}

atlas_fail() {
	eerror
	eerror "ATLAS auto-config failed."
	eerror "Please run 'interactive=1 emerge lapack-atlas' to configure"
	eerror "manually."
	eerror
	die "ATLAS auto-config failed."
}

src_compile() {
	cd ${S}
	if [ -n "${interactive}" ]
	then
		echo "${interactive}"
		make config CC="$(tc-getCC) -DUSE_LIBTOOL -DINTERACTIVE" || die
	else
		# Use ATLAS defaults for all questions:
		(echo | make config CC="$(tc-getCC) -DUSE_LIBTOOL") || atlas_fail
	fi

	TMPSTR=$(ls Make.Linux*)
	ATLAS_ARCH=${TMPSTR#'Make.'}

	CC="libtool --mode=compile --tag=CC $(tc-getCC) -I/usr/include/atlas"

	cd ${S}/src/lapack/${ATLAS_ARCH}
	make lib CC="${CC}" || die

	cd ${S}/interfaces/lapack/C/src/${ATLAS_ARCH}
	make lib CC="${CC}" || die

	cd ${S}/interfaces/lapack/F77/src/${ATLAS_ARCH}

	make lib CC="${CC}" F77="libtool --mode=compile --tag=F77 g77" || die

	cd ${S_LAPACK}
	if use ifc
	then
		FC="ifc"
		FFLAGS="${IFCFLAGS}"
		NOOPT="-O0" # Do NOT change this. It is applied to two files with
					# routines to determine machine constants.
	else
		FC="g77"
		# g77 hates opts, esp. machine-specific
		ALLOWED_FLAGS="-O -O1 -O2 -fstack-protector -fno-unit-at-a-time \
						-pipe -g -Wall"
		strip-flags
		FFLAGS="${CFLAGS}"
		NOOPT=""
	fi
	make lapacklib FORTRAN="libtool --mode=compile --tag=F77 ${FC}" OPTS="${FFLAGS}" \
		NOOPT="${NOOPT}" || die

	cd ${S_LAPACK}/SRC
	cp -sf ${S}/gentoo/liblapack.a/*.o .
	cp -sf ${S}/gentoo/liblapack.a/*.lo .
	cp -sf ${S}/gentoo/liblapack.a/.libs/*.o .libs/

	if use ifc
	then
		ifc ${FFLAGS} -shared .libs/*.o -Wl,-soname -Wl,liblapack.so.0 \
			-o liblapack.so.0.0.0 -lblas -lcblas -latlas \
			-L$(gcc-config -L) -lg2c
		ar cru liblapack.a *.o
		ranlib liblapack.a
	else
		libtool --mode=link --tag=CC $(tc-getCC) -o liblapack.la *.lo \
			-rpath ${RPATH} -lblas -lcblas -latlas -lg2c
	fi
}

src_install () {
	dodir ${RPATH}

	cd ${S_LAPACK}/SRC
	if use ifc
	then
		strip --strip-unneeded liblapack.so.0.0.0
		strip --strip-debug liblapack.a

		exeinto ${RPATH}
		doexe liblapack.so.0.0.0
		dosym liblapack.so.0.0.0 ${RPATH}/liblapack.so.0
		dosym liblapack.so.0.0.0 ${RPATH}/liblapack.so

		insinto ${RPATH}
		doins liblapack.a
	else
		libtool --mode=install install -s liblapack.la ${D}/${RPATH}
	fi

	insinto ${TOP_PATH}
	doins ${FILESDIR}/f77-ATLAS

	insinto /usr/include/atlas
	cd ${S}/include
	doins clapack.h || die "failed to install clapack.h"

	cd ${S}
	dodoc README
	cd ${S}/doc
	dodoc AtlasCredits.txt ChangeLog
	if use doc;
	then
		dodoc lapackqref.ps
	fi
}

pkg_postinst() {
	/usr/bin/lapack-config ATLAS

	einfo
	einfo "To link with ATLAS LAPACK from C or Fortran, simply use:"
	einfo
	einfo "-llapack"
	einfo
	einfo "C users: your header is /usr/include/atlas/clapack.h"
	einfo
}