# Build script for libelf

 do_libelf_get() { :; }

 do_libelf_extract() { :; }

 do_libelf_for_build() { :; }

 do_libelf_for_host() { :; }

 do_libelf_for_target() { :; }

 if [ "${CT_LIBELF}" = "y" -o "${CT_LIBELF_TARGET}" = "y" ]; then

 do_libelf_get() {

     # The server hosting libelf will return an "HTTP 300 : Multiple Choices"

     # error code if we try to download a file that does not exists there.

     # So we have to request the file with an explicit extension.

     CT_GetFile "libelf-${CT_LIBELF_VERSION}" .tar.gz http://www.mr511.de/software/

 }

 do_libelf_extract() {

     CT_Extract "libelf-${CT_LIBELF_VERSION}"

     CT_Patch "libelf" "${CT_LIBELF_VERSION}"

 }

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

 # Build libelf for running on build

 # - always build statically

 # - we do not have build-specific CFLAGS

 # - install in build-tools prefix

 do_libelf_for_build() {

     local -a libelf_opts

     case "${CT_TOOLCHAIN_TYPE}" in

         native|cross)   return 0;;

     esac

     CT_DoStep INFO "Installing libelf for build"

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

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

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

     libelf_opts+=( "cflags=${CT_CFLAGS_FOR_BUILD}" )

     libelf_opts+=( "ldflags=${CT_LDFLAGS_FOR_BUILD}" )

     do_libelf_backend "${libelf_opts[@]}"

     CT_Popd

     CT_EndStep

 }

 # Build libelf for running on host

 do_libelf_for_host() {

     local -a libelf_opts

     CT_DoStep INFO "Installing libelf for host"

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

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

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

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

     libelf_opts+=( "ldflags=${CT_LDFLAGS_FOR_HOST}" )

     do_libelf_backend "${libelf_opts[@]}"

     CT_Popd

     CT_EndStep

 }

 fi # CT_LIBELF

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

 do_libelf_for_target() {

     local -a libelf_opts

     CT_DoStep INFO "Installing libelf for the target"

     CT_mkdir_pushd "${CT_BUILD_DIR}/build-libelf-target-${CT_TARGET}"

     libelf_opts+=( "destdir=${CT_SYSROOT_DIR}" )

     libelf_opts+=( "host=${CT_TARGET}" )

     libelf_opts+=( "prefix=/usr" )

     libelf_opts+=( "shared=y" )

     do_libelf_backend "${libelf_opts[@]}"

     CT_Popd

     CT_EndStep

 }

 fi # CT_LIBELF_TARGET

 # Build libelf

 #     Parameter     : description               : type      : default

 #     destdir       : out-of-tree install dir   : string    : /

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

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

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

 #     ldflags       : ldflags to use            : string    : (empty)

 #     shared        : also buils shared lib     : bool      : n

 do_libelf_backend() {

     local destdir="/"

     local host

     local prefix

     local cflags

     local ldflags

     local shared

     local -a extra_config

     local arg

     for arg in "$@"; do

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

     done

     CT_DoLog EXTRA "Configuring libelf"

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

         extra_config+=( --enable-shared )

     else

         extra_config+=( --disable-shared )

     fi

     CT_DoExecLog CFG                                        \

     CC="${host}-gcc"                                        \

     RANLIB="${host}-ranlib"                                 \

     CFLAGS="${cflags} -fPIC"                                \

     LDFLAGS="${ldflags}"                                    \

     "${CT_SRC_DIR}/libelf-${CT_LIBELF_VERSION}/configure"   \

         --build=${CT_BUILD}                                 \

         --host=${host}                                      \

         --target=${CT_TARGET}                               \

         --prefix="${prefix}"                                \

         --enable-compat                                     \

         --enable-elf64                                      \

         --enable-extended-format                            \

         --enable-static                                     \

         "${extra_config[@]}"

     CT_DoLog EXTRA "Building libelf"

     CT_DoExecLog ALL make

     CT_DoLog EXTRA "Installing libelf"

     CT_DoExecLog ALL make instroot="${destdir}" install

 }

 fi # CT_LIBELF || CT_LIBELF_TARGET