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162 lines
4.8 KiB
Plaintext
162 lines
4.8 KiB
Plaintext
17 years ago
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dnl @synopsis ACX_BLAS([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
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dnl
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dnl This macro looks for a library that implements the BLAS
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dnl linear-algebra interface (see http://www.netlib.org/blas/). On
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dnl success, it sets the BLAS_LIBS output variable to hold the
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dnl requisite library linkages.
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dnl
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dnl To link with BLAS, you should link with:
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dnl
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dnl $BLAS_LIBS $LIBS $FLIBS
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dnl
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dnl in that order. FLIBS is the output variable of the
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dnl AC_F77_LIBRARY_LDFLAGS macro (called if necessary by ACX_BLAS), and
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dnl is sometimes necessary in order to link with F77 libraries. Users
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dnl will also need to use AC_F77_DUMMY_MAIN (see the autoconf manual),
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dnl for the same reason.
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dnl
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dnl Many libraries are searched for, from ATLAS to CXML to ESSL. The
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dnl user may also use --with-blas=<lib> in order to use some specific
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dnl BLAS library <lib>. In order to link successfully, however, be
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dnl aware that you will probably need to use the same Fortran compiler
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dnl (which can be set via the F77 env. var.) as was used to compile the
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dnl BLAS library.
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dnl
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dnl ACTION-IF-FOUND is a list of shell commands to run if a BLAS
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dnl library is found, and ACTION-IF-NOT-FOUND is a list of commands to
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dnl run it if it is not found. If ACTION-IF-FOUND is not specified, the
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dnl default action will define HAVE_BLAS.
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dnl
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dnl This macro requires autoconf 2.50 or later.
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dnl
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dnl @category InstalledPackages
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dnl @author Steven G. Johnson <stevenj@alum.mit.edu>
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dnl @version 2001-12-13
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dnl @license GPLWithACException
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dnl modified by salvatore.filippone@uniroma2.it
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dnl shifted check for ESSL as it was generating erroneous results on
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dnl AIX SP5.
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dnl
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AC_DEFUN([ACX_BLAS], [
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AC_PREREQ(2.50)
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AC_REQUIRE([AC_F77_LIBRARY_LDFLAGS])
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acx_blas_ok=no
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AC_ARG_WITH(blas,
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[AC_HELP_STRING([--with-blas=<lib>], [use BLAS library <lib>])])
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case $with_blas in
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yes | "") ;;
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no) acx_blas_ok=disable ;;
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-* | */* | *.a | *.so | *.so.* | *.o) BLAS_LIBS="$with_blas" ;;
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*) BLAS_LIBS="-l$with_blas" ;;
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esac
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# Get fortran linker names of BLAS functions to check for.
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AC_F77_FUNC(sgemm)
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AC_F77_FUNC(dgemm)
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acx_blas_save_LIBS="$LIBS"
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LIBS="$LIBS $FLIBS"
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# First, check BLAS_LIBS environment variable
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if test $acx_blas_ok = no; then
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if test "x$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, [acx_blas_ok=yes], [BLAS_LIBS=""])
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AC_MSG_RESULT($acx_blas_ok)
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LIBS="$save_LIBS"
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fi
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fi
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# BLAS in ATLAS library? (http://math-atlas.sourceforge.net/)
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if test $acx_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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[acx_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 $acx_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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[acx_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 Alpha CXML library?
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if test $acx_blas_ok = no; then
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AC_CHECK_LIB(cxml, $sgemm, [acx_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 $acx_blas_ok = no; then
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AC_CHECK_LIB(dxml, $sgemm, [acx_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 $acx_blas_ok = no; then
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if test "x$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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acx_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 $acx_blas_ok = no; then
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AC_CHECK_LIB(scs, $sgemm, [acx_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 $acx_blas_ok = no; then
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AC_CHECK_LIB(complib.sgimath, $sgemm,
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[acx_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 $acx_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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[acx_blas_ok=yes; BLAS_LIBS="-lessl -lblas"],
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[], [-lblas $FLIBS])])
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fi
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# BLAS linked to by default? (happens on some supercomputers)
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if test $acx_blas_ok = no; then
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save_LIBS="$LIBS"; LIBS="$LIBS"
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AC_TRY_LINK_FUNC($sgemm, [acx_blas_ok=yes], [BLAS_LIBS=""])
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dnl AC_CHECK_FUNC($sgemm, [acx_blas_ok=yes])
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LIBS="$save_LIBS"
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fi
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# Generic BLAS library?
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if test $acx_blas_ok = no; then
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AC_CHECK_LIB(blas, $sgemm, [acx_blas_ok=yes; BLAS_LIBS="-lblas"])
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fi
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AC_SUBST(BLAS_LIBS)
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LIBS="$acx_blas_save_LIBS"
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# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
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if test x"$acx_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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acx_blas_ok=no
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$2
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fi
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])dnl ACX_BLAS
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