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scripts/build/companion_libs/libelf.sh
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Wed Dec 29 02:34:18 2010 +0100 (2010-12-29)
branch1.9
changeset 2256 004b41d847f8
parent 2216 81b4c0efa46f
child 2332 cc0587459152
permissions -rw-r--r--
complibs/libelf: build with -fPIC

libelf is used by gcc to build the lto-plugin used
by binutils' gold to perform LTO.

This requires that files in libelf be compiled with
-fPIC to generate a proper .so.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from c48aba92cbeb7b7dce956a63ec65d3296735cc16) 
     1 # Build script for libelf

     2 

     3 do_libelf_get() { :; }

     4 do_libelf_extract() { :; }

     5 do_libelf() { :; }

     6 do_libelf_target() { :; }

     7 

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

     9 

    10 do_libelf_get() {

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

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

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

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

    15 }

    16 

    17 do_libelf_extract() {

    18     CT_Extract "libelf-${CT_LIBELF_VERSION}"

    19     CT_Patch "libelf" "${CT_LIBELF_VERSION}"

    20 }

    21 

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

    23 

    24 do_libelf() {

    25     local -a libelf_opts

    26 

    27     CT_DoStep INFO "Installing libelf"

    28     mkdir -p "${CT_BUILD_DIR}/build-libelf"

    29     CT_Pushd "${CT_BUILD_DIR}/build-libelf"

    30 

    31     CT_DoLog EXTRA "Configuring libelf"

    32 

    33     if [ "${CT_COMPLIBS_SHARED}" = "y" ]; then

    34         libelf_opts+=( --enable-shared --disable-static )

    35     else

    36         libelf_opts+=( --disable-shared --enable-static )

    37     fi

    38 

    39     CC="${CT_HOST}-gcc"                                     \

    40     CFLAGS="-fPIC"                                          \

    41     CT_DoExecLog CFG                                        \

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

    43         --build=${CT_BUILD}                                 \

    44         --host=${CT_HOST}                                   \

    45         --target=${CT_TARGET}                               \

    46         --prefix="${CT_COMPLIBS_DIR}"                       \

    47         --enable-compat                                     \

    48         --enable-elf64                                      \

    49         --enable-extended-format                            \

    50         "${libelf_opts[@]}"

    51 

    52     CT_DoLog EXTRA "Building libelf"

    53     CT_DoExecLog ALL make

    54 

    55     CT_DoLog EXTRA "Installing libelf"

    56     CT_DoExecLog ALL make install

    57 

    58     CT_Popd

    59     CT_EndStep

    60 }

    61 

    62 fi # CT_LIBELF

    63 

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

    65 

    66 do_libelf_target() {

    67     CT_DoStep INFO "Installing libelf for the target"

    68     mkdir -p "${CT_BUILD_DIR}/build-libelf-for-target"

    69     CT_Pushd "${CT_BUILD_DIR}/build-libelf-for-target"

    70 

    71     CT_DoLog EXTRA "Configuring libelf"

    72     CC="${CT_TARGET}-gcc"                                   \

    73     CFLAGS="-fPIC"                                          \

    74     CT_DoExecLog ALL                                        \

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

    76         --build=${CT_BUILD}                                 \

    77         --host=${CT_TARGET}                                 \

    78         --target=${CT_TARGET}                               \

    79         --prefix=/usr                                       \

    80         --enable-compat                                     \

    81         --enable-elf64                                      \

    82         --enable-shared                                     \

    83         --enable-extended-format                            \

    84         --enable-static

    85 

    86     CT_DoLog EXTRA "Building libelf"

    87     CT_DoExecLog ALL make

    88 

    89     CT_DoLog EXTRA "Installing libelf"

    90     CT_DoExecLog ALL make instroot="${CT_SYSROOT_DIR}" install

    91 

    92     CT_Popd

    93     CT_EndStep

    94 }

    95 

    96 fi # CT_LIBELF_TARGET

    97 

    98 fi # CT_LIBELF || CT_LIBELF_TARGET
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