# This file adds the functions to build the MPFR library

# Copyright 2008 Yann E. MORIN

# Licensed under the GPL v2. See COPYING in the root of this package

do_mpfr_get() { :; }

do_mpfr_extract() { :; }

do_mpfr_for_build() { :; }

do_mpfr_for_host() { :; }

# Overide function depending on configuration

if [ "${CT_MPFR}" = "y" ]; then

# Download MPFR

do_mpfr_get() {

    CT_GetFile "mpfr-${CT_MPFR_VERSION}" http://www.mpfr.org/mpfr-current/  \

                                 http://www.mpfr.org/mpfr-${CT_MPFR_VERSION}/

}

# Extract MPFR

do_mpfr_extract() {

    CT_Extract "mpfr-${CT_MPFR_VERSION}"

    CT_Patch "mpfr" "${CT_MPFR_VERSION}"

    # OK, Gentoo have a sanity check that libtool.m4 and ltmain.sh have the

    # same version number. Unfortunately, some tarballs of MPFR are not

    # built sanely, and thus ./configure fails on Gentoo.

    # See: http://sourceware.org/ml/crossgcc/2008-05/msg00080.html

    # and: http://sourceware.org/ml/crossgcc/2008-06/msg00005.html

    # This hack is not bad per se, but the MPFR guys would be better not to

    # do that in the future...

    # It seems that MPFR >= 2.4.0 do not need this...

    case "${CT_MPFR_VERSION}" in

        2.4.*)

            CT_Pushd "${CT_SRC_DIR}/mpfr-${CT_MPFR_VERSION}"

            if [ ! -f .autoreconf.ct-ng ]; then

                CT_DoLog DEBUG "Running autoreconf"

                CT_DoExecLog ALL autoreconf

                touch .autoreconf.ct-ng

            fi

            CT_Popd

            ;;

        1.*|2.0.*|2.1.*|2.2.*|2.3.*)

            CT_Pushd "${CT_SRC_DIR}/mpfr-${CT_MPFR_VERSION}"

            if [ ! -f .autotools.ct-ng ]; then

                CT_DoLog DEBUG "Re-building autotools files"

                CT_DoExecLog ALL autoreconf -fi

                # Starting with libtool-1.9f, config.{guess,sub} are no longer

                # installed without -i, but starting with libtool-2.2.6, they

                # are no longer removed without -i. Sight... Just use -i with

                # libtool >=2

                # See: http://sourceware.org/ml/crossgcc/2008-11/msg00046.html

                # and: http://sourceware.org/ml/crossgcc/2008-11/msg00048.html

                libtoolize_opt=

                case "$(libtoolize --version |head -n 1 |awk '{ print $(NF); }')" in

                    0.*)    ;;

                    1.*)    ;;

                    *)      libtoolize_opt=-i;;

                esac

                CT_DoExecLog ALL libtoolize -f ${libtoolize_opt}

                touch .autotools.ct-ng

            fi

            CT_Popd

            ;;

    esac

}

# Build MPFR for running on build

# - always build statically

# - we do not have build-specific CFLAGS

# - install in build-tools prefix

do_mpfr_for_build() {

    local -a mpfr_opts

    case "${CT_TOOLCHAIN_TYPE}" in

        native|cross)   return 0;;

    esac

    CT_DoStep INFO "Installing MPFR for build"

    CT_mkdir_pushd "${CT_BUILD_DIR}/build-mpfr-build-${CT_BUILD}"

    mpfr_opts+=( "host=${CT_BUILD}" )

    mpfr_opts+=( "prefix=${CT_BUILDTOOLS_PREFIX_DIR}" )

    do_mpfr_backend "${mpfr_opts[@]}"

    CT_Popd

    CT_EndStep

}

# Build MPFR for running on host

do_mpfr_for_host() {

    local -a mpfr_opts

    CT_DoStep INFO "Installing MPFR for host"

    CT_mkdir_pushd "${CT_BUILD_DIR}/build-mpfr-host-${CT_HOST}"

    mpfr_opts+=( "host=${CT_HOST}" )

    mpfr_opts+=( "prefix=${CT_HOST_COMPLIBS_DIR}" )

    mpfr_opts+=( "cflags=${CT_CFLAGS_FOR_HOST}" )

    do_mpfr_backend "${mpfr_opts[@]}"

    CT_Popd

    CT_EndStep

}

# Build MPFR

#     Parameter     : description               : type      : default

#     host          : machine to run on         : tuple     : (none)

#     prefix        : prefix to install into    : dir       : (none)

#     cflags        : host cflags to use        : string    : (empty)

do_mpfr_backend() {

    local host

    local prefix

    local cflags

    local arg

    for arg in "$@"; do

        eval "${arg// /\\ }"

    done

    # Under Cygwin, we can't build a thread-safe library

    case "${CT_HOST}" in

        *cygwin*)   mpfr_opts+=( --disable-thread-safe );;

        *mingw*)    mpfr_opts+=( --disable-thread-safe );;

        *darwin*)   mpfr_opts+=( --disable-thread-safe );;

        *)          mpfr_opts+=( --enable-thread-safe  );;

    esac

    CT_DoLog EXTRA "Configuring MPFR"

    CT_DoExecLog CFG                                    \

    CC="${host}-gcc"                                    \

    CFLAGS="${CT_CFLAGS_FOR_HOST}"                      \

    "${CT_SRC_DIR}/mpfr-${CT_MPFR_VERSION}/configure"   \

        --build=${CT_BUILD}                             \

        --host=${host}                                  \

        --prefix="${prefix}"                            \

        --with-gmp="${prefix}"                          \

        --disable-shared                                \

        --enable-static

    CT_DoLog EXTRA "Building MPFR"

    CT_DoExecLog ALL make ${JOBSFLAGS}

    if [ "${CT_COMPLIBS_CHECK}" = "y" ]; then

        CT_DoLog EXTRA "Checking MPFR"

        CT_DoExecLog ALL make ${JOBSFLAGS} -s check

    fi

    CT_DoLog EXTRA "Installing MPFR"

    CT_DoExecLog ALL make install

}

fi # CT_MPFR