# This file adds the functions to build the GMP library

# Copyright 2008 Yann E. MORIN

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

do_gmp_get() { :; }

do_gmp_extract() { :; }

do_gmp_for_build() { :; }

do_gmp_for_host() { :; }

# Overide functions depending on configuration

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

# Download GMP

do_gmp_get() {

    CT_GetFile "gmp-${CT_GMP_VERSION}" {ftp,http}://{ftp.sunet.se/pub,ftp.gnu.org}/gnu/gmp

}

# Extract GMP

do_gmp_extract() {

    CT_Extract "gmp-${CT_GMP_VERSION}"

    CT_Patch "gmp" "${CT_GMP_VERSION}"

}

# Build GMP for running on build

# - always build statically

# - we do not have build-specific CFLAGS

# - install in build-tools prefix

do_gmp_for_build() {

    local -a gmp_opts

    case "${CT_TOOLCHAIN_TYPE}" in

        native|cross)   return 0;;

    esac

    CT_DoStep INFO "Installing GMP for build"

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

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

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

    do_gmp_backend "${gmp_opts[@]}"

    CT_Popd

    CT_EndStep

}

# Build GMP for running on host

do_gmp_for_host() {

    local -a gmp_opts

    CT_DoStep INFO "Installing GMP for host"

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

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

    gmp_opts+=( "prefix=${CT_COMPLIBS_DIR}" )

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

    do_gmp_backend "${gmp_opts[@]}"

    CT_Popd

    CT_EndStep

}

# Build GMP

#     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_gmp_backend() {

    local host

    local prefix

    local cflags

    local arg

    for arg in "$@"; do

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

    done

    CT_DoLog EXTRA "Configuring GMP"

    CT_DoExecLog CFG                                \

    CFLAGS="${cflags} -fexceptions"                 \

    "${CT_SRC_DIR}/gmp-${CT_GMP_VERSION}/configure" \

        --build=${CT_BUILD}                         \

        --host=${host}                              \

        --prefix="${prefix}"                        \

        --enable-fft                                \

        --enable-mpbsd                              \

        --enable-cxx                                \

        --disable-shared                            \

        --enable-static

    CT_DoLog EXTRA "Building GMP"

    CT_DoExecLog ALL make ${JOBSFLAGS}

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

        CT_DoLog EXTRA "Checking GMP"

        CT_DoExecLog ALL make ${JOBSFLAGS} -s check

    fi

    CT_DoLog EXTRA "Installing GMP"

    CT_DoExecLog ALL make install

}

fi # CT_GMP