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208 lines
6.8 KiB
Plaintext
208 lines
6.8 KiB
Plaintext
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# ===========================================================================
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# http://www.gnu.org/software/autoconf-archive/ax_blas.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_BLAS([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
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#
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# DESCRIPTION
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#
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# This macro looks for a library that implements the BLAS linear-algebra
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# interface (see http://www.netlib.org/blas/). On success, it sets the
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# BLAS_LIBS output variable to hold the requisite library linkages.
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#
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# To link with BLAS, you should link with:
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#
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# $BLAS_LIBS $LIBS $FLIBS
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#
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# in that order. FLIBS is the output variable of the
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# AC_F77_LIBRARY_LDFLAGS macro (called if necessary by AX_BLAS), and is
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# sometimes necessary in order to link with F77 libraries. Users will also
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# need to use AC_F77_DUMMY_MAIN (see the autoconf manual), for the same
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# reason.
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#
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# Many libraries are searched for, from ATLAS to CXML to ESSL. The user
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# may also use --with-blas=<lib> in order to use some specific BLAS
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# library <lib>. In order to link successfully, however, be aware that you
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# will probably need to use the same Fortran compiler (which can be set
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# via the F77 env. var.) as was used to compile the BLAS library.
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#
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# ACTION-IF-FOUND is a list of shell commands to run if a BLAS library is
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# found, and ACTION-IF-NOT-FOUND is a list of commands to run it if it is
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# not found. If ACTION-IF-FOUND is not specified, the default action will
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# define HAVE_BLAS.
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#
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# LICENSE
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#
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# Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation, either version 3 of the License, or (at your
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# option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# As a special exception, the respective Autoconf Macro's copyright owner
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# gives unlimited permission to copy, distribute and modify the configure
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# scripts that are the output of Autoconf when processing the Macro. You
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# need not follow the terms of the GNU General Public License when using
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# or distributing such scripts, even though portions of the text of the
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# Macro appear in them. The GNU General Public License (GPL) does govern
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# all other use of the material that constitutes the Autoconf Macro.
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#
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# This special exception to the GPL applies to versions of the Autoconf
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# Macro released by the Autoconf Archive. When you make and distribute a
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# modified version of the Autoconf Macro, you may extend this special
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# exception to the GPL to apply to your modified version as well.
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#serial 12
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AU_ALIAS([ACX_BLAS], [AX_BLAS])
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AC_DEFUN([AX_BLAS], [
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AC_PREREQ(2.50)
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AC_REQUIRE([AC_F77_LIBRARY_LDFLAGS])
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ax_blas_ok=no
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AC_ARG_WITH(blas,
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[AS_HELP_STRING([--with-blas=<lib>], [use BLAS library <lib>])])
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case $with_blas in
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yes | "") ;;
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no) ax_blas_ok=disable ;;
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-* | */* | *.a | *.so | *.so.* | *.o) BLAS_LIBS="$with_blas" ;;
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*) BLAS_LIBS="-l$with_blas" ;;
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esac
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# Get fortran linker names of BLAS functions to check for.
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AC_F77_FUNC(sgemm)
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AC_F77_FUNC(dgemm)
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ax_blas_save_LIBS="$LIBS"
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LIBS="$LIBS $FLIBS"
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# First, check BLAS_LIBS environment variable
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if test $ax_blas_ok = no; then
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if test "x$BLAS_LIBS" != x; then
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save_LIBS="$LIBS"; LIBS="$BLAS_LIBS $LIBS"
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AC_MSG_CHECKING([for $sgemm in $BLAS_LIBS])
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AC_TRY_LINK_FUNC($sgemm, [ax_blas_ok=yes], [BLAS_LIBS=""])
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AC_MSG_RESULT($ax_blas_ok)
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LIBS="$save_LIBS"
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fi
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fi
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# BLAS linked to by default? (happens on some supercomputers)
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if test $ax_blas_ok = no; then
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save_LIBS="$LIBS"; LIBS="$LIBS"
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AC_MSG_CHECKING([if $sgemm is being linked in already])
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AC_TRY_LINK_FUNC($sgemm, [ax_blas_ok=yes])
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AC_MSG_RESULT($ax_blas_ok)
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LIBS="$save_LIBS"
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fi
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# BLAS in OpenBLAS library? (http://xianyi.github.com/OpenBLAS/)
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if test $ax_blas_ok = no; then
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AC_CHECK_LIB(openblas, $sgemm, [ax_blas_ok=yes
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BLAS_LIBS="-lopenblas"])
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fi
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# BLAS in ATLAS library? (http://math-atlas.sourceforge.net/)
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if test $ax_blas_ok = no; then
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AC_CHECK_LIB(atlas, ATL_xerbla,
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[AC_CHECK_LIB(f77blas, $sgemm,
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[AC_CHECK_LIB(cblas, cblas_dgemm,
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[ax_blas_ok=yes
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BLAS_LIBS="-lcblas -lf77blas -latlas"],
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[], [-lf77blas -latlas])],
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[], [-latlas])])
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fi
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# BLAS in PhiPACK libraries? (requires generic BLAS lib, too)
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if test $ax_blas_ok = no; then
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AC_CHECK_LIB(blas, $sgemm,
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[AC_CHECK_LIB(dgemm, $dgemm,
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[AC_CHECK_LIB(sgemm, $sgemm,
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[ax_blas_ok=yes; BLAS_LIBS="-lsgemm -ldgemm -lblas"],
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[], [-lblas])],
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[], [-lblas])])
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fi
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# BLAS in Intel MKL library?
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if test $ax_blas_ok = no; then
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AC_CHECK_LIB(mkl, $sgemm, [ax_blas_ok=yes;BLAS_LIBS="-lmkl -lguide -lpthread"],,[-lguide -lpthread])
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fi
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# BLAS in Apple vecLib library?
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if test $ax_blas_ok = no; then
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save_LIBS="$LIBS"; LIBS="-framework vecLib $LIBS"
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AC_MSG_CHECKING([for $sgemm in -framework vecLib])
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AC_TRY_LINK_FUNC($sgemm, [ax_blas_ok=yes;BLAS_LIBS="-framework vecLib"])
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AC_MSG_RESULT($ax_blas_ok)
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LIBS="$save_LIBS"
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fi
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# BLAS in Alpha CXML library?
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if test $ax_blas_ok = no; then
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AC_CHECK_LIB(cxml, $sgemm, [ax_blas_ok=yes;BLAS_LIBS="-lcxml"])
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fi
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# BLAS in Alpha DXML library? (now called CXML, see above)
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if test $ax_blas_ok = no; then
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AC_CHECK_LIB(dxml, $sgemm, [ax_blas_ok=yes;BLAS_LIBS="-ldxml"])
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fi
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# BLAS in Sun Performance library?
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if test $ax_blas_ok = no; then
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if test "x$GCC" != xyes; then # only works with Sun CC
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AC_CHECK_LIB(sunmath, acosp,
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[AC_CHECK_LIB(sunperf, $sgemm,
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[BLAS_LIBS="-xlic_lib=sunperf -lsunmath"
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ax_blas_ok=yes],[],[-lsunmath])])
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fi
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fi
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# BLAS in SCSL library? (SGI/Cray Scientific Library)
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if test $ax_blas_ok = no; then
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AC_CHECK_LIB(scs, $sgemm, [ax_blas_ok=yes; BLAS_LIBS="-lscs"])
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fi
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# BLAS in SGIMATH library?
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if test $ax_blas_ok = no; then
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AC_CHECK_LIB(complib.sgimath, $sgemm,
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[ax_blas_ok=yes; BLAS_LIBS="-lcomplib.sgimath"])
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fi
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# BLAS in IBM ESSL library? (requires generic BLAS lib, too)
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if test $ax_blas_ok = no; then
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AC_CHECK_LIB(blas, $sgemm,
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[AC_CHECK_LIB(essl, $sgemm,
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[ax_blas_ok=yes; BLAS_LIBS="-lessl -lblas"],
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[], [-lblas $FLIBS])])
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fi
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# Generic BLAS library?
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if test $ax_blas_ok = no; then
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AC_CHECK_LIB(blas, $sgemm, [ax_blas_ok=yes; BLAS_LIBS="-lblas"])
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fi
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AC_SUBST(BLAS_LIBS)
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LIBS="$ax_blas_save_LIBS"
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# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
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if test x"$ax_blas_ok" = xyes; then
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ifelse([$1],,AC_DEFINE(HAVE_BLAS,1,[Define if you have a BLAS library.]),[$1])
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:
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else
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ax_blas_ok=no
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$2
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fi
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])dnl AX_BLAS
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