# 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