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|
AC_DEFUN([ACX_FORTRAN_SYMBOLS], [
# Dubiously checks for Fortran linking conventions and BLAS+LAPACK at the same time
# mostly to avoid the need for having a fortran compiler installed
# Check for no underscore first since IBM BG ESSL seems to define dgemm with/without underscore
# but dsyev only without underscore ... but AMD ACML also defines both but with different
# interfaces (fortran and c) ... ugh. Hardwire linking for bgp and restore to original order.
AC_MSG_NOTICE([Checking Fortran-C linking conventions (dgemm -> ?)])
fsym=no
if test $host = "powerpc-bgp-linux-gnu"; then
fsym="lc"
AC_MSG_NOTICE([Fortran linking convention is $fsym])
AC_DEFINE([FORTRAN_LINKAGE_LC],[1],[Fortran-C linking convention lower case (no underscore)])
fi
if test $host = "powerpc64-bgq-linux-gnu"; then
fsym="lc"
AC_MSG_NOTICE([Fortran linking convention is $fsym])
AC_DEFINE([FORTRAN_LINKAGE_LC],[1],[Fortran-C linking convention lower case (no underscore)])
fi
if test $fsym = no; then
AC_CHECK_FUNC([dgemm_],[fsym="lcu"])
fi
if test $fsym = no; then
AC_CHECK_FUNC([dgemm],[fsym="lc"])
fi
if test $fsym = no; then
AC_CHECK_FUNC([dgemm__],[fsym="lcuu"])
fi
if test $fsym = no; then
AC_CHECK_FUNC([DGEMM],[fsym="uc"])
fi
if test $fsym = no; then
AC_CHECK_FUNC([DGEMM_],[fsym="ucu"])
fi
# Well there is nothing in the existing path that gives us what we are
# looking for so try looking for some standard examples so that common
# Linux, Apple and configurations work automatically. We save the
# BLAS library name instead of adding it directly to LIBS since it
# will need to be appened after any LAPACK library that is yet to
# be found.
# OS X
if test $fsym$ON_A_MAC = noyes; then
LDFLAGS="$LDFLAGS -framework Accelerate"
fsym="lcu"
AC_MSG_NOTICE([Using Accelerate framework for BLAS support])
fi
# Linux
BLASLIB=""
if test $fsym = no; then
AC_LANG_SAVE
AC_LANG([C++])
for blaslib in openblas blas; do
AC_CHECK_LIB([$blaslib],
[dgemm_],
[fsym="lcu"; BLASLIB="-l$blaslib"; AC_MSG_NOTICE([Found dgemm_ in $blaslib]); break],
[AC_MSG_NOTICE([Unable to find dgemm_ in $blaslib])],
[-lpthread])
done
AC_LANG_RESTORE
fi
# others ... insert here or extend above for loop if correct symbol is dgemm_
if test $fsym = no; then
AC_MSG_ERROR([Could not find dgemm with any known linking conventions])
fi
AC_MSG_NOTICE([Fortran linking convention is $fsym])
# Now verify that we have at least one of the required lapack routines and again attempt to search for candidate libraries if nothing is found
if test $fsym = lc; then
AC_DEFINE([FORTRAN_LINKAGE_LC],[1],[Fortran-C linking convention lower case (no underscore)])
lapacksym=dsyev
fi
if test $fsym = lcu; then
AC_DEFINE([FORTRAN_LINKAGE_LCU],[1],[Fortran-C linking convention lower case with single underscore])
lapacksym=dsyev_
fi
if test $fsym = lcuu; then
AC_DEFINE([FORTRAN_LINKAGE_LCUU],[1],[Fortran-C linking convention lower case with double underscore])
lapacksym=dsyev__
fi
if test $fsym = uc; then
AC_DEFINE([FORTRAN_LINKAGE_UC],[1],[Fortran-C linking convention upper case])
lapacksym=DSYEV
fi
if test $fsym = ucu; then
AC_DEFINE([FORTRAN_LINKAGE_UCU],[1],[Fortran-C linking convention upper case with single underscore])
lapacksym=DSYEV_
fi
LAPACKLIB=""
foundlapack=no
AC_CHECK_FUNC([$lapacksym],[foundlapack=yes],AC_MSG_NOTICE([Could not find dsyev with selected linking convention in default library path]))
LAPACKLIB=""
if test $foundlapack = no; then
AC_LANG_SAVE
AC_LANG([C++])
for lapacklib in lapack; do
AC_CHECK_LIB([$lapacklib],
[$lapacksym],
[foundlapack=yes; LAPACKLIB="-l$lapacklib"; AC_MSG_NOTICE([Found $lapacksym in $lapacklib]); break],
[AC_MSG_NOTICE([Unable to find $lapacksym in $lapackib])],
[$BLASLIB -lpthread])
done
AC_LANG_RESTORE
fi
if test $foundlapack = no; then
AC_MSG_NOTICE([Could not find $lapacksym in any known library ... specify LAPACK library via LIBS])
fi
if test "x$LIBS" != "x"; then
LIBS="$LIBS $LAPACKLIB $BLASLIB"
else
LIBS="$LAPACKLIB $BLASLIB"
fi
])
|
