[f06d52] | 1 | # ===========================================================================
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| 2 | # http://www.gnu.org/software/autoconf-archive/ax_blas.html
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| 3 | # ===========================================================================
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| 4 | #
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| 5 | # SYNOPSIS
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| 6 | #
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| 7 | # AX_BLAS([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
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| 8 | #
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| 9 | # DESCRIPTION
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| 10 | #
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| 11 | # This macro looks for a library that implements the BLAS linear-algebra
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| 12 | # interface (see http://www.netlib.org/blas/). On success, it sets the
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| 13 | # BLAS_LIBS output variable to hold the requisite library linkages.
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| 14 | #
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| 15 | # To link with BLAS, you should link with:
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| 16 | #
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| 17 | # $BLAS_LIBS $LIBS $FLIBS
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| 18 | #
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| 19 | # in that order. FLIBS is the output variable of the
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| 20 | # AC_F77_LIBRARY_LDFLAGS macro (called if necessary by AX_BLAS), and is
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| 21 | # sometimes necessary in order to link with F77 libraries. Users will also
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| 22 | # need to use AC_F77_DUMMY_MAIN (see the autoconf manual), for the same
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| 23 | # reason.
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| 24 | #
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| 25 | # Many libraries are searched for, from ATLAS to CXML to ESSL. The user
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| 26 | # may also use --with-blas=<lib> in order to use some specific BLAS
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| 27 | # library <lib>. In order to link successfully, however, be aware that you
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| 28 | # will probably need to use the same Fortran compiler (which can be set
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| 29 | # via the F77 env. var.) as was used to compile the BLAS library.
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| 30 | #
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| 31 | # ACTION-IF-FOUND is a list of shell commands to run if a BLAS library is
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| 32 | # found, and ACTION-IF-NOT-FOUND is a list of commands to run it if it is
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| 33 | # not found. If ACTION-IF-FOUND is not specified, the default action will
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| 34 | # define HAVE_BLAS.
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| 35 | #
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| 36 | # LICENSE
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| 37 | #
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| 38 | # Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
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| 39 | #
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| 40 | # This program is free software: you can redistribute it and/or modify it
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| 41 | # under the terms of the GNU General Public License as published by the
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| 42 | # Free Software Foundation, either version 3 of the License, or (at your
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| 43 | # option) any later version.
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| 44 | #
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| 45 | # This program is distributed in the hope that it will be useful, but
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| 46 | # WITHOUT ANY WARRANTY; without even the implied warranty of
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| 47 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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| 48 | # Public License for more details.
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| 49 | #
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| 50 | # You should have received a copy of the GNU General Public License along
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| 51 | # with this program. If not, see <http://www.gnu.org/licenses/>.
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| 52 | #
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| 53 | # As a special exception, the respective Autoconf Macro's copyright owner
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| 54 | # gives unlimited permission to copy, distribute and modify the configure
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| 55 | # scripts that are the output of Autoconf when processing the Macro. You
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| 56 | # need not follow the terms of the GNU General Public License when using
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| 57 | # or distributing such scripts, even though portions of the text of the
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| 58 | # Macro appear in them. The GNU General Public License (GPL) does govern
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| 59 | # all other use of the material that constitutes the Autoconf Macro.
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| 60 | #
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| 61 | # This special exception to the GPL applies to versions of the Autoconf
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| 62 | # Macro released by the Autoconf Archive. When you make and distribute a
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| 63 | # modified version of the Autoconf Macro, you may extend this special
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| 64 | # exception to the GPL to apply to your modified version as well.
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| 65 |
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| 66 | #serial 14
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| 67 |
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| 68 | AU_ALIAS([ACX_BLAS], [AX_BLAS])
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| 69 | AC_DEFUN([AX_BLAS], [
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| 70 | AC_PREREQ(2.50)
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| 71 | AC_REQUIRE([AC_F77_LIBRARY_LDFLAGS])
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| 72 | AC_REQUIRE([AC_CANONICAL_HOST])
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| 73 | ax_blas_ok=no
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| 74 |
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| 75 | AC_ARG_WITH(blas,
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| 76 | [AS_HELP_STRING([--with-blas=<lib>], [use BLAS library <lib>])])
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| 77 | case $with_blas in
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| 78 | yes | "") ;;
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| 79 | no) ax_blas_ok=disable ;;
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| 80 | -* | */* | *.a | *.so | *.so.* | *.o) BLAS_LIBS="$with_blas" ;;
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| 81 | *) BLAS_LIBS="-l$with_blas" ;;
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| 82 | esac
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| 83 |
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| 84 | # Get fortran linker names of BLAS functions to check for.
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| 85 | AC_F77_FUNC(sgemm)
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| 86 | AC_F77_FUNC(dgemm)
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| 87 |
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| 88 | ax_blas_save_LIBS="$LIBS"
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| 89 | LIBS="$LIBS $FLIBS"
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| 90 |
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| 91 | # First, check BLAS_LIBS environment variable
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| 92 | if test $ax_blas_ok = no; then
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| 93 | if test "x$BLAS_LIBS" != x; then
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| 94 | save_LIBS="$LIBS"; LIBS="$BLAS_LIBS $LIBS"
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| 95 | AC_MSG_CHECKING([for $sgemm in $BLAS_LIBS])
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| 96 | AC_TRY_LINK_FUNC($sgemm, [ax_blas_ok=yes], [BLAS_LIBS=""])
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| 97 | AC_MSG_RESULT($ax_blas_ok)
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| 98 | LIBS="$save_LIBS"
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| 99 | fi
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| 100 | fi
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| 101 |
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| 102 | # BLAS linked to by default? (happens on some supercomputers)
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| 103 | if test $ax_blas_ok = no; then
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| 104 | save_LIBS="$LIBS"; LIBS="$LIBS"
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| 105 | AC_MSG_CHECKING([if $sgemm is being linked in already])
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| 106 | AC_TRY_LINK_FUNC($sgemm, [ax_blas_ok=yes])
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| 107 | AC_MSG_RESULT($ax_blas_ok)
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| 108 | LIBS="$save_LIBS"
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| 109 | fi
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| 110 |
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| 111 | # BLAS in OpenBLAS library? (http://xianyi.github.com/OpenBLAS/)
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| 112 | if test $ax_blas_ok = no; then
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| 113 | AC_CHECK_LIB(openblas, $sgemm, [ax_blas_ok=yes
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| 114 | BLAS_LIBS="-lopenblas"])
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| 115 | fi
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| 116 |
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| 117 | # BLAS in ATLAS library? (http://math-atlas.sourceforge.net/)
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| 118 | if test $ax_blas_ok = no; then
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| 119 | AC_CHECK_LIB(atlas, ATL_xerbla,
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| 120 | [AC_CHECK_LIB(f77blas, $sgemm,
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| 121 | [AC_CHECK_LIB(cblas, cblas_dgemm,
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| 122 | [ax_blas_ok=yes
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| 123 | BLAS_LIBS="-lcblas -lf77blas -latlas"],
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| 124 | [], [-lf77blas -latlas])],
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| 125 | [], [-latlas])])
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| 126 | fi
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| 127 |
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| 128 | # BLAS in PhiPACK libraries? (requires generic BLAS lib, too)
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| 129 | if test $ax_blas_ok = no; then
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| 130 | AC_CHECK_LIB(blas, $sgemm,
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| 131 | [AC_CHECK_LIB(dgemm, $dgemm,
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| 132 | [AC_CHECK_LIB(sgemm, $sgemm,
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| 133 | [ax_blas_ok=yes; BLAS_LIBS="-lsgemm -ldgemm -lblas"],
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| 134 | [], [-lblas])],
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| 135 | [], [-lblas])])
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| 136 | fi
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| 137 |
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| 138 | # BLAS in Intel MKL library?
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| 139 | if test $ax_blas_ok = no; then
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| 140 | # MKL for gfortran
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| 141 | if test x"$ac_cv_fc_compiler_gnu" = xyes; then
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| 142 | # 64 bit
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| 143 | if test $host_cpu = x86_64; then
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| 144 | AC_CHECK_LIB(mkl_gf_lp64, $sgemm,
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| 145 | [ax_blas_ok=yes;BLAS_LIBS="-lmkl_gf_lp64 -lmkl_sequential -lmkl_core -lpthread"],,
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| 146 | [-lmkl_gf_lp64 -lmkl_sequential -lmkl_core -lpthread])
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| 147 | # 32 bit
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| 148 | elif test $host_cpu = i686; then
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| 149 | AC_CHECK_LIB(mkl_gf, $sgemm,
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| 150 | [ax_blas_ok=yes;BLAS_LIBS="-lmkl_gf -lmkl_sequential -lmkl_core -lpthread"],,
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| 151 | [-lmkl_gf -lmkl_sequential -lmkl_core -lpthread])
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| 152 | fi
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| 153 | # MKL for other compilers (Intel, PGI, ...?)
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| 154 | else
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| 155 | # 64-bit
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| 156 | if test $host_cpu = x86_64; then
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| 157 | AC_CHECK_LIB(mkl_intel_lp64, $sgemm,
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| 158 | [ax_blas_ok=yes;BLAS_LIBS="-lmkl_intel_lp64 -lmkl_sequential -lmkl_core -lpthread"],,
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| 159 | [-lmkl_intel_lp64 -lmkl_sequential -lmkl_core -lpthread])
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| 160 | # 32-bit
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| 161 | elif test $host_cpu = i686; then
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| 162 | AC_CHECK_LIB(mkl_intel, $sgemm,
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| 163 | [ax_blas_ok=yes;BLAS_LIBS="-lmkl_intel -lmkl_sequential -lmkl_core -lpthread"],,
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| 164 | [-lmkl_intel -lmkl_sequential -lmkl_core -lpthread])
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| 165 | fi
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| 166 | fi
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| 167 | fi
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| 168 | # Old versions of MKL
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| 169 | if test $ax_blas_ok = no; then
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| 170 | AC_CHECK_LIB(mkl, $sgemm, [ax_blas_ok=yes;BLAS_LIBS="-lmkl -lguide -lpthread"],,[-lguide -lpthread])
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| 171 | fi
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| 172 |
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| 173 | # BLAS in Apple vecLib library?
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| 174 | if test $ax_blas_ok = no; then
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| 175 | save_LIBS="$LIBS"; LIBS="-framework vecLib $LIBS"
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| 176 | AC_MSG_CHECKING([for $sgemm in -framework vecLib])
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| 177 | AC_TRY_LINK_FUNC($sgemm, [ax_blas_ok=yes;BLAS_LIBS="-framework vecLib"])
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| 178 | AC_MSG_RESULT($ax_blas_ok)
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| 179 | LIBS="$save_LIBS"
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| 180 | fi
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| 181 |
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| 182 | # BLAS in Alpha CXML library?
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| 183 | if test $ax_blas_ok = no; then
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| 184 | AC_CHECK_LIB(cxml, $sgemm, [ax_blas_ok=yes;BLAS_LIBS="-lcxml"])
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| 185 | fi
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| 186 |
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| 187 | # BLAS in Alpha DXML library? (now called CXML, see above)
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| 188 | if test $ax_blas_ok = no; then
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| 189 | AC_CHECK_LIB(dxml, $sgemm, [ax_blas_ok=yes;BLAS_LIBS="-ldxml"])
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| 190 | fi
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| 191 |
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| 192 | # BLAS in Sun Performance library?
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| 193 | if test $ax_blas_ok = no; then
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| 194 | if test "x$GCC" != xyes; then # only works with Sun CC
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| 195 | AC_CHECK_LIB(sunmath, acosp,
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| 196 | [AC_CHECK_LIB(sunperf, $sgemm,
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| 197 | [BLAS_LIBS="-xlic_lib=sunperf -lsunmath"
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| 198 | ax_blas_ok=yes],[],[-lsunmath])])
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| 199 | fi
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| 200 | fi
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| 201 |
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| 202 | # BLAS in SCSL library? (SGI/Cray Scientific Library)
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| 203 | if test $ax_blas_ok = no; then
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| 204 | AC_CHECK_LIB(scs, $sgemm, [ax_blas_ok=yes; BLAS_LIBS="-lscs"])
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| 205 | fi
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| 206 |
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| 207 | # BLAS in SGIMATH library?
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| 208 | if test $ax_blas_ok = no; then
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| 209 | AC_CHECK_LIB(complib.sgimath, $sgemm,
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| 210 | [ax_blas_ok=yes; BLAS_LIBS="-lcomplib.sgimath"])
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| 211 | fi
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| 212 |
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| 213 | # BLAS in IBM ESSL library? (requires generic BLAS lib, too)
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| 214 | if test $ax_blas_ok = no; then
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| 215 | AC_CHECK_LIB(blas, $sgemm,
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| 216 | [AC_CHECK_LIB(essl, $sgemm,
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| 217 | [ax_blas_ok=yes; BLAS_LIBS="-lessl -lblas"],
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| 218 | [], [-lblas $FLIBS])])
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| 219 | fi
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| 220 |
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| 221 | # Generic BLAS library?
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| 222 | if test $ax_blas_ok = no; then
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| 223 | AC_CHECK_LIB(blas, $sgemm, [ax_blas_ok=yes; BLAS_LIBS="-lblas"])
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| 224 | fi
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| 225 |
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| 226 | AC_SUBST(BLAS_LIBS)
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| 227 |
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| 228 | LIBS="$ax_blas_save_LIBS"
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| 229 |
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| 230 | # Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
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| 231 | if test x"$ax_blas_ok" = xyes; then
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| 232 | ifelse([$1],,AC_DEFINE(HAVE_BLAS,1,[Define if you have a BLAS library.]),[$1])
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| 233 | :
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| 234 | else
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| 235 | ax_blas_ok=no
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| 236 | $2
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| 237 | fi
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| 238 | ])dnl AX_BLAS
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