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#
#
# Copyright (C) 2000-2021 the YAMBO team
# http://www.yambo-code.org
#
# Authors (see AUTHORS file for details): DS
#
# This file is distributed under the terms of the GNU
# General Public License. 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 2, 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, write to the Free
# Software Foundation, Inc., 59 Temple Place - Suite 330,Boston,
# MA 02111-1307, USA or visit http://www.gnu.org/copyleft/gpl.txt.
#
AC_DEFUN([ACX_LIB_GPU], [
dnl Check if the library was given in the command line
dnl if not, use environment variables or defaults
AC_ARG_WITH(cuda_libs, [AS_HELP_STRING([--with-cuda-libs=<libs>],
[Use libcuda libraries <libs>],[32])])
AC_ARG_WITH(cuda_incs, [AS_HELP_STRING([--with-cuda-incs=<incs>],
[Use libcuda include options <incs>],[32])])
#
AC_ARG_WITH(cuda_libdir, [AS_HELP_STRING([--with-cuda-libdir=<path>],
[Path to the libcuda lib directory],[32])])
AC_ARG_WITH(cuda_includedir, [AS_HELP_STRING([--with-cuda-includedir=<path>],
[Path to the libcuda include directory],[32])])
#
AC_ARG_WITH(cuda_path, [AS_HELP_STRING([--with-cuda-path=<path>],
[Path to libcuda install directory],[32])])
#
AC_ARG_WITH(rocm_libdir, [AS_HELP_STRING([--with-rocm-libdir=<path>],
[Path to the rocm lib directory],[32])])
AC_ARG_WITH(rocm_includedir, [AS_HELP_STRING([--with-rocm-includedir=<path>],
[Path to the rocm include directory],[32])])
#
AC_ARG_WITH(rocm_path, [AS_HELP_STRING([--with-rocm-path=<path>],
[Path to rocm install directory],[32])])
#
#AC_ARG_ENABLE([cuda-libs-check],
# [AS_HELP_STRING([--enable-cuda-libs-check=yes],[The configure script will check CUDA installation and report problems @<:@default=yes@:>@])],
# [],[enable_cuda_libs_check=yes])
acx_libcuda_ok="no"
internal_libcuda="no"
compile_libcuda="no"
use_libcuda="no"
# Cuda and ROCm libraries are needed only in one of the three following cases
if test x"$enable_cuda_fortran" != "xno" || test x"$enable_openacc" != "xno" || test x"$enable_openmp" != "xno" ; then
#
dnl Heuristics to detect CUDA dir
if test "x$with_cuda_path" = "x" ; then with_cuda_path="$CUDA_PATH" ; fi
if test "x$with_cuda_path" = "x" ; then with_cuda_path="$CUDA_ROOT" ; fi
if test "x$with_cuda_path" = "x" ; then with_cuda_path="$CUDA_HOME" ; fi
LIBCUDA_PATH="$with_cuda_path"
#
dnl Heuristics to detect ROCm dir
if test "x$with_rocm_path" = "x" ; then with_rocm_path="$ROCM_PATH" ; fi
if test "x$with_rocm_path" = "x" ; then with_rocm_path="$ROCM_ROOT" ; fi
if test "x$with_rocm_path" = "x" ; then with_rocm_path="$ROCM_HOME" ; fi
LIBROCM_PATH="$with_rocm_path"
if test -d "$with_cuda_path"; then
libcuda_incdir="$with_cuda_path/include"
libcuda_libdir="$with_cuda_path/lib"
if ! test -d "$libcuda_libdir" ; then libcuda_libdir="$with_cuda_path/lib64" ; fi
fi
if test -d "$with_cuda_includedir"; then libcuda_incdir="$with_cuda_includedir" ; fi
if test -d "$with_cuda_libdir"; then libcuda_libdir="$with_cuda_libdir" ; fi
if test -d "$with_rocm_path"; then
librocm_incdir="$with_rocm_path/include"
librocm_libdir="$with_rocm_path/lib"
if ! test -d "$librocm_libdir" ; then librocm_libdir="$with_rocm_path/lib" ; fi
fi
if test -d "$with_rocm_includedir"; then librocm_incdir="$with_rocm_includedir" ; fi
if test -d "$with_rocm_libdir"; then librocm_libdir="$with_rocm_libdir" ; fi
LIBROCM_LIBS="-L$librocm_libdir -lrocblas"
LIBROCM_INCS="-I$librocm_incdir"
dnl Backup LIBS and FCFLAGS
acx_libcuda_save_LIBS="$LIBS"
acx_libcuda_save_FCFLAGS="$FCFLAGS"
#Test to be finalized, for now it is always going to succeed
dnl The tests
AC_LANG_PUSH(Fortran)
dnl The following program should work with all version of libcuda
testprog="AC_LANG_PROGRAM([],[
integer ierr
ierr=cuInit
ierr=cudaMalloc
ierr=cublasInit
ierr=cufftPlanMany
])"
LIBCUDA_INCS=""
if test x"$CUDA_INCS" != "x" ; then LIBCUDA_INCS="$CUDA_INCS" ; fi
if test x"$libcuda_incdir" != "x" ; then LIBCUDA_INCS="$imod$libcuda_incdir" ; fi
if test x"$with_cuda_incs" != "x" ; then LIBCUDA_INCS="$with_cuda_incs" ; fi
FCFLAGS="$LIBCUDA_INCS $acx_libcuda_save_FCFLAGS"
# set from environment variable, if not blank
if test ! -z "$CUDA_LIBS"; then
AC_MSG_CHECKING([for libcuda from environment])
LIBCUDA_LIBS="$CUDA_LIBS"
LIBS="$LIBCUDA_LIBS"
dnl $acx_libcuda_save_LIBS"
AC_LINK_IFELSE($testprog, [acx_libcuda_ok=yes], [])
fi
# set from --with-cuda-libs flag
if test x"$acx_libcuda_ok" = xno && test ! -z "$with_cuda_libs" ; then
AC_MSG_CHECKING([for libcuda from --with-cuda-libs])
LIBCUDA_LIBS="$with_cuda_libs"
LIBS="$LIBCUDA_LIBS"
dnl $acx_libcuda_save_LIBS"
AC_LINK_IFELSE($testprog, [acx_libcuda_ok=yes], [])
fi
# dynamic linkage, separate Fortran interface
if test x"$acx_libcuda_ok" = xno; then
AC_MSG_CHECKING([for libcuda from specified libcuda path, dynamic])
LIBCUDA_LIBS="-L$libcuda_libdir -lcufft -lcusolver -lcublas -lcudart -lcuda"
LIBS="$LIBCUDA_LIBS"
dnl $acx_libcuda_save_LIBS"
AC_LINK_IFELSE($testprog, [acx_libcuda_ok=yes], [])
fi
# static linkage, separate Fortran interface
if test x"$acx_libcuda_ok" = xno; then
AC_MSG_CHECKING([static])
LIBCUDA_LIBS="$libcuda_libdir/libcuda.a"
LIBS="$LIBCUDA_LIBS"
dnl $acx_libcuda_save_LIBS"
AC_LINK_IFELSE($testprog, [acx_libcuda_ok=yes], [])
fi
dnl Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
if test x"$acx_libcuda_ok" = xyes; then
use_libcuda=yes
compile_libcuda=no
internal_libcuda=no
#
AC_DEFINE(HAVE_LIBCUDA, 1, [Defined if you have the LIBCUDA library.])
AC_MSG_RESULT([yes.])
else
AC_MSG_RESULT([not found.])
use_libcuda=no
compile_libcuda=no
internal_libcuda=no
LIBCUDA_LIBS=""
LIBCUDA_INCS=""
LIBCUDA_PATH=""
fi
AC_LANG_POP(Fortran)
fi
#
# Internal libcuda not available at the moment
#
#if test x"$acx_libcuda_ok" = xno; then
# internal_libcuda="yes"
# LIBCUDA_LIBS="${extlibs_path}/${FCKIND}/${FC}/lib/libcuda.a"
# LIBCUDA_INCS="$imod${extlibs_path}/${FCKIND}/${FC}/include"
# if test -e "${extlibs_path}/${FCKIND}/${FC}/lib/libcuda.a"; then
# compile_libcuda="no"
# AC_MSG_RESULT([Compatible external DevXlib not found/specified. Found internal already compiled.])
# else
# compile_libcuda="yes"
# AC_MSG_RESULT([Compatible external DevXlib not found/specified. Internal to be compiled.])
# fi
#fi
AC_SUBST(LIBCUDA_LIBS)
AC_SUBST(LIBCUDA_INCS)
AC_SUBST(LIBCUDA_PATH)
AC_SUBST(LIBROCM_LIBS)
AC_SUBST(LIBROCM_INCS)
AC_SUBST(LIBROCM_PATH)
AC_SUBST(use_libcuda)
AC_SUBST(compile_libcuda)
AC_SUBST(internal_libcuda)
FCFLAGS="$acx_libcuda_save_FCFLAGS"
LIBS="$acx_libcuda_save_LIBS"
])
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