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# ===========================================================================
# http://autoconf-archive.cryp.to/acx_blas.html
# ===========================================================================
#
# SYNOPSIS
#
# ACX_CBLAS([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
#
# DESCRIPTION
#
# This macro looks for a library that implements the CBLAS linear-algebra
# interface (see http://www.netlib.org/blas/). On success, it sets the
# CBLAS_LIBS output variable to hold the requisite library linkages.
#
# To link with BLAS, you should link with:
#
# $CBLAS_LIBS $LIBS
#
# Many libraries are searched for, from ATLAS to CXML to ESSL. The user
# may also use --with-blas=<lib> in order to use some specific CBLAS
# library <lib>. In order to link successfully, however, be aware that you
# will probably need to use the same Fortran compiler (which can be set
# via the F77 env. var.) as was used to compile the BLAS library.
#
# ACTION-IF-FOUND is a list of shell commands to run if a CBLAS library is
# found, and ACTION-IF-NOT-FOUND is a list of commands to run it if it is
# not found. If ACTION-IF-FOUND is not specified, the default action will
# define HAVE_CBLAS.
#
# This macro requires autoconf 2.50 or later.
#
# LAST MODIFICATION
#
# 2008-04-12
#
# COPYLEFT
#
# Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
# Copyright (c) 2008 Free Software Foundation, Inc.
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
#
# As a special exception, the respective Autoconf Macro's copyright owner
# gives unlimited permission to copy, distribute and modify the configure
# scripts that are the output of Autoconf when processing the Macro. You
# need not follow the terms of the GNU General Public License when using
# or distributing such scripts, even though portions of the text of the
# Macro appear in them. The GNU General Public License (GPL) does govern
# all other use of the material that constitutes the Autoconf Macro.
#
# This special exception to the GPL applies to versions of the Autoconf
# Macro released by the Autoconf Macro Archive. When you make and
# distribute a modified version of the Autoconf Macro, you may extend this
# special exception to the GPL to apply to your modified version as well.
AC_DEFUN([ACX_CBLAS], [
AC_PREREQ(2.50)
dnl AC_REQUIRE([AC_F77_LIBRARY_LDFLAGS])
AC_REQUIRE([AC_CANONICAL_HOST])
acx_cblas_ok=no
AC_ARG_WITH(cblas,
[AC_HELP_STRING([--with-cblas=<lib>], [use CBLAS library <lib>])])
case $with_cblas in
yes | "") ;;
no) acx_cblas_ok=disable ;;
-* | */* | *.a | *.so | *.so.* | *.o) CBLAS_LIBS="$with_cblas" ;;
*) CBLAS_LIBS="-l$with_cblas" ;;
esac
acx_cblas_save_LIBS="$LIBS"
LIBS="$LIBS $FLIBS"
# First, check CBLAS_LIBS environment variable
if test $acx_cblas_ok = no; then
if test "x$CBLAS_LIBS" != x; then
save_LIBS="$LIBS"; LIBS="$CBLAS_LIBS $LIBS"
AC_MSG_CHECKING([for cblas_sgemm in $CBLAS_LIBS])
AC_TRY_LINK_FUNC(cblas_sgemm, [acx_cblas_ok=yes], [CBLAS_LIBS=""])
AC_MSG_RESULT($acx_cblas_ok)
LIBS="$save_LIBS"
fi
fi
# CBLAS linked to by default? (happens on some supercomputers)
if test $acx_cblas_ok = no; then
save_LIBS="$LIBS"; LIBS="$LIBS"
AC_CHECK_FUNC(cblas_sgemm, [acx_cblas_ok=yes])
LIBS="$save_LIBS"
fi
# CBLAS in ATLAS library? (http://math-atlas.sourceforge.net/)
if test $acx_cblas_ok = no; then
AC_CHECK_LIB(atlas, ATL_xerbla,
[AC_CHECK_LIB(cblas, cblas_dgemm,
[acx_cblas_ok=yes
CBLAS_LIBS="-lcblas -latlas"],
[], [-latlas])],
[], [-latlas])
fi
# CBLAS in ATLAS library in /usr/lib64/atlas (if not cross-compiling)
if test $acx_cblas_ok = no && test "$cross_compiling" = no; then
unset ac_cv_lib_atlas_ATL_xerbla
unset ac_cv_lib_cblas_cblas_dgemm
AC_CHECK_LIB(atlas, ATL_xerbla,
[AC_CHECK_LIB(cblas, cblas_dgemm,
[acx_cblas_ok=yes
CBLAS_LIBS="-L/usr/lib64/atlas -lcblas -latlas"],
[], [-L/usr/lib64/atlas -latlas])],
[], [-L/usr/lib64/atlas -latlas])
fi
# CBLAS in ATLAS library in /usr/lib/atlas (if not cross-compiling)
if test $acx_cblas_ok = no && test "$cross_compiling" = no; then
unset ac_cv_lib_atlas_ATL_xerbla
unset ac_cv_lib_cblas_cblas_dgemm
AC_CHECK_LIB(atlas, ATL_xerbla,
[AC_CHECK_LIB(cblas, cblas_dgemm,
[acx_cblas_ok=yes
CBLAS_LIBS="-L/usr/lib/atlas -lcblas -latlas"],
[], [-L/usr/lib/atlas -latlas])],
[], [-L/usr/lib/atlas -latlas])
fi
# CBLAS in PhiPACK libraries? (requires generic BLAS lib, too)
if test $acx_cblas_ok = no; then
AC_CHECK_LIB(cblas, cblas_sgemm,
[AC_CHECK_LIB(dgemm, cblas_dgemm,
[AC_CHECK_LIB(sgemm, cblas_sgemm,
[acx_cblas_ok=yes; CBLAS_LIBS="-lsgemm -ldgemm -lblas"],
[], [-lblas])],
[], [-lblas])])
fi
# BLAS in Intel MKL library?
if test $acx_cblas_ok = no; then
AC_CHECK_LIB(mkl, cblas_sgemm, [acx_cblas_ok=yes;CBLAS_LIBS="-lmkl"])
fi
# CBLAS in Apple vecLib library?
if test $acx_cblas_ok = no; then
save_LIBS="$LIBS"; LIBS="-framework vecLib $LIBS"
AC_CHECK_FUNC(cblas_sgemm, [acx_cblas_ok=yes;CBLAS_LIBS="-framework vecLib"])
LIBS="$save_LIBS"
fi
# CBLAS in Alpha CXML library?
if test $acx_cblas_ok = no; then
AC_CHECK_LIB(cxml, cblas_sgemm, [acx_cblas_ok=yes;CBLAS_LIBS="-lcxml"])
fi
# CBLAS in Alpha DXML library? (now called CXML, see above)
if test $acx_cblas_ok = no; then
AC_CHECK_LIB(dxml, cblas_sgemm, [acx_cblas_ok=yes;CBLAS_LIBS="-ldxml"])
fi
# CBLAS in Sun Performance library?
if test $acx_cblas_ok = no; then
if test "x$GCC" != xyes; then # only works with Sun CC
AC_CHECK_LIB(sunmath, acosp,
[AC_CHECK_LIB(sunperf, cblas_sgemm,
[CBLAS_LIBS="-xlic_lib=sunperf -lsunmath"
acx_cblas_ok=yes],[],[-lsunmath])])
fi
fi
# CBLAS in SCSL library? (SGI/Cray Scientific Library)
if test $acx_cblas_ok = no; then
AC_CHECK_LIB(scs, cblas_sgemm, [acx_cblas_ok=yes; CBLAS_LIBS="-lscs"])
fi
# CBLAS in SGIMATH library?
if test $acx_cblas_ok = no; then
AC_CHECK_LIB(complib.sgimath, cblas_sgemm,
[acx_cblas_ok=yes; CBLAS_LIBS="-lcomplib.sgimath"])
fi
# CBLAS in IBM ESSL library? (requires generic CBLAS lib, too)
if test $acx_cblas_ok = no; then
AC_CHECK_LIB(cblas, cblas_sgemm,
[AC_CHECK_LIB(essl, cblas_sgemm,
[acx_cblas_ok=yes; CBLAS_LIBS="-lessl -lblas"],
[], [-lblas $FLIBS])])
fi
# Generic CBLAS library?
if test $acx_cblas_ok = no; then
AC_CHECK_LIB(cblas, cblas_sgemm, [acx_cblas_ok=yes; CBLAS_LIBS="-lcblas"])
fi
# Generic BLAS library?
if test $acx_cblas_ok = no; then
AC_CHECK_LIB(blas, cblas_sgemm, [acx_cblas_ok=yes; CBLAS_LIBS="-lblas"])
fi
# GSL generic CBLAS library?
if test $acx_cblas_ok = no; then
AC_CHECK_LIB(gslcblas, cblas_sgemm, [acx_cblas_ok=yes; CBLAS_LIBS="-lgslcblas"])
fi
AC_SUBST(CBLAS_LIBS)
LIBS="$acx_cblas_save_LIBS"
# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
if test x"$acx_cblas_ok" = xyes; then
ifelse([$1],,AC_DEFINE(HAVE_CBLAS,1,[Define if you have a CBLAS library.]),[$1])
:
else
acx_cblas_ok=no
$2
fi
])dnl ACX_CBLAS
|
