scripts/build/companion_libs/libelf.sh
author Johannes Stezenbach <js@sig21.net>
Thu Jul 29 19:47:16 2010 +0200 (2010-07-29)
changeset 2045 fdaa6c7f6dea
parent 1917 7a489a7b5d55
child 2154 250cdcc86441
permissions -rw-r--r--
cc/gcc: add option to compile against static libstdc++, for gcc-4.4 and newer

Idea and know-how taken from CodeSourcery build script.

Normal build:
$ ldd arm-unknown-linux-uclibcgnueabi-gcc
linux-gate.so.1 => (0xb77f3000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb76e8000)
libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb75a1000)
libm.so.6 => /lib/i686/cmov/libm.so.6 (0xb757a000)
/lib/ld-linux.so.2 (0xb77f4000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb755c000)

CC_STATIC_LIBSTDCXX=y:
$ ldd arm-unknown-linux-uclibcgnueabi-gcc
linux-gate.so.1 => (0xb7843000)
libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb76e6000)
/lib/ld-linux.so.2 (0xb7844000)

I made CC_STATIC_LIBSTDCXX default=y since I think
it is always desirable.

Signed-off-by: Johannes Stezenbach <js@sig21.net>
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# Build script for libelf
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do_libelf_get() { :; }
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do_libelf_extract() { :; }
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do_libelf() { :; }
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do_libelf_target() { :; }
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if [ "${CT_LIBELF}" = "y" -o "${CT_LIBELF_TARGET}" = "y" ]; then
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do_libelf_get() {
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    # The server hosting libelf will return an "HTTP 300 : Multiple Choices"
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    # error code if we try to download a file that does not exists there.
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    # So we have to request the file with an explicit extension.
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    CT_GetFile "libelf-${CT_LIBELF_VERSION}" .tar.gz http://www.mr511.de/software/
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}
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do_libelf_extract() {
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    CT_Extract "libelf-${CT_LIBELF_VERSION}"
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    CT_Patch "libelf" "${CT_LIBELF_VERSION}"
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}
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if [ "${CT_LIBELF}" = "y" ]; then
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do_libelf() {
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    local -a libelf_opts
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    CT_DoStep INFO "Installing libelf"
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    mkdir -p "${CT_BUILD_DIR}/build-libelf"
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    CT_Pushd "${CT_BUILD_DIR}/build-libelf"
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    CT_DoLog EXTRA "Configuring libelf"
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    if [ "${CT_COMPLIBS_SHARED}" = "y" ]; then
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        libelf_opts+=( --enable-shared --disable-static )
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    else
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        libelf_opts+=( --disable-shared --enable-static )
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    fi
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    CT_DoExecLog ALL                                        \
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    "${CT_SRC_DIR}/libelf-${CT_LIBELF_VERSION}/configure"   \
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        --build=${CT_BUILD}                                 \
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        --host=${CT_HOST}                                   \
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        --target=${CT_TARGET}                               \
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        --prefix="${CT_COMPLIBS_DIR}"                       \
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        --enable-compat                                     \
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        --enable-elf64                                      \
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        --enable-extended-format                            \
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        "${libelf_opts[@]}"
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    CT_DoLog EXTRA "Building libelf"
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    CT_DoExecLog ALL make
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    CT_DoLog EXTRA "Installing libelf"
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    CT_DoExecLog ALL make install
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    CT_Popd
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    CT_EndStep
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}
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fi # CT_LIBELF
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if [ "${CT_LIBELF_TARGET}" = "y" ]; then
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do_libelf_target() {
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    CT_DoStep INFO "Installing libelf for the target"
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    mkdir -p "${CT_BUILD_DIR}/build-libelf-for-target"
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    CT_Pushd "${CT_BUILD_DIR}/build-libelf-for-target"
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    CT_DoLog EXTRA "Configuring libelf"
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    CC="${CT_TARGET}-gcc"                                   \
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    CT_DoExecLog ALL                                        \
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    "${CT_SRC_DIR}/libelf-${CT_LIBELF_VERSION}/configure"   \
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        --build=${CT_BUILD}                                 \
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        --host=${CT_TARGET}                                 \
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        --target=${CT_TARGET}                               \
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        --prefix=/usr                                       \
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        --enable-compat                                     \
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        --enable-elf64                                      \
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        --enable-shared                                     \
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        --enable-extended-format                            \
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        --enable-static
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    CT_DoLog EXTRA "Building libelf"
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    CT_DoExecLog ALL make
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    CT_DoLog EXTRA "Installing libelf"
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    CT_DoExecLog ALL make instroot="${CT_SYSROOT_DIR}" install
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    CT_Popd
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    CT_EndStep
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}
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fi # CT_LIBELF_TARGET
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fi # CT_LIBELF || CT_LIBELF_TARGET