# dpcp.m4 - Library to operate with DevX

# 

# Copyright (C) Mellanox Technologies Ltd. 2001-2020.  ALL RIGHTS RESERVED.

# See file LICENSE for terms.

#

##########################

# libdpcp usage support

#

AC_DEFUN([DPCP_CAPABILITY_SETUP],

[

AC_ARG_WITH([dpcp],

    AS_HELP_STRING([--with-dpcp(=DIR)],

                   [Search for dpcp headers and libraries in DIR (default NO)]),

    [],

    [with_dpcp=no]

)

if test "x$vma_cv_directverbs" != x3 && test "x$with_dpcp" != xno; then

    AC_MSG_ERROR([dpcp can be used under RDMA-core subsystem only])

fi

vma_cv_dpcp=0

AS_IF([test "x$with_dpcp" == xno],

    [],

    [

    if test -z "$with_dpcp" || test "$with_dpcp" = "yes"; then

        with_dpcp=/usr

    fi

    FUNC_CHECK_WITHDIR([dpcp], [$with_dpcp], [include/mellanox/dpcp.h])

    vma_cv_dpcp_save_CPPFLAGS="$CPPFLAGS"

    vma_cv_dpcp_save_CXXFLAGS="$CXXFLAGS"

    vma_cv_dpcp_save_CFLAGS="$CFLAGS"

    vma_cv_dpcp_save_LDFLAGS="$LDFLAGS"

    vma_cv_dpcp_save_LIBS="$LIBS"

    vma_cv_dpcp_CPPFLAGS="-I$with_dpcp/include"

    vma_cv_dpcp_LIBS="-ldpcp -lmlx5"

    vma_cv_dpcp_LDFLAGS="-L$with_dpcp/lib -Wl,--rpath,$with_dpcp/lib"

    if test -d "$with_dpcp/lib64"; then

        vma_cv_dpcp_LDFLAGS="-L$with_dpcp/lib64 -Wl,--rpath,$with_dpcp/lib64"

    fi

    CPPFLAGS="$vma_cv_dpcp_CPPFLAGS $CPPFLAGS"

    CXXFLAGS="-std=c++11 $CXXFLAGS"

    LDFLAGS="$vma_cv_dpcp_LDFLAGS $LDFLAGS"

    LIBS="$vma_cv_dpcp_LIBS $LIBS"

    AC_LANG_PUSH([C++])

    AC_CHECK_HEADER(

        [mellanox/dpcp.h],

        [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <mellanox/dpcp.h>]],

             [[dpcp::provider *provider;

               dpcp::provider::get_instance(provider);]])],

             [vma_cv_dpcp=1])

        ])

    AC_LANG_POP()

    CPPFLAGS="$vma_cv_dpcp_save_CPPFLAGS"

    CXXFLAGS="$vma_cv_dpcp_save_CXXFLAGS"

    CFLAGS="$vma_cv_dpcp_save_CFLAGS"

    LDFLAGS="$vma_cv_dpcp_save_LDFLAGS"

    LIBS="$vma_cv_dpcp_save_LIBS"

    ])

AC_MSG_CHECKING([for dpcp support])

if test "$vma_cv_dpcp" -ne 0; then

    CPPFLAGS="$CPPFLAGS $vma_cv_dpcp_CPPFLAGS"

    LDFLAGS="$LDFLAGS $vma_cv_dpcp_LDFLAGS"

    AC_SUBST([DPCP_LIBS], ["-ldpcp"])

    AC_DEFINE_UNQUOTED([DEFINED_DPCP], [1], [Define to 1 to use DPCP])

    AC_MSG_RESULT([yes])

else

    AS_IF([test "x$with_dpcp" == xno],

        [AC_MSG_RESULT([no])],

        [AC_MSG_ERROR([dpcp support requested but not present])])

fi

])