scripts/build/binutils/elf2flt.sh
author Michael Hope <michael.hope@linaro.org>
Thu Sep 29 12:40:42 2011 +1300 (2011-09-29)
changeset 2695 f2495884ca3e
parent 2466 b7df125a1c78
child 2923 60f5ceb1b413
permissions -rw-r--r--
config: add a 'auto' value for the number of parallel jobs

When CT_PARALLEL_JOBS is -1, set the number of parallel jobs to the
number of online CPUs + 1. Update documentation to match.

I find this useful when building in the cloud. You can use the same
.config file and have the build adapt to the number of processors
available. Limited testing shows that NCPUS+1 is faster than NCPUS+0
or NCPUS+2.

Signed-off-by: Michael Hope <michael.hope@linaro.org>
     1 # This file adds functions to build elf2flt
     2 # Copyright 2009 John Williams
     3 # Copyright 2007 Yann E. MORIN
     4 # Licensed under the GPL v2. See COPYING in the root of this package
     5 
     6 # Default: do nothing
     7 do_elf2flt_get()     { :; }
     8 do_elf2flt_extract() { :; }
     9 do_elf2flt()         { :; }
    10 
    11 if [ -n "${CT_ARCH_BINFMT_FLAT}" ]; then
    12 
    13 # Download elf2flt
    14 do_elf2flt_get() {
    15     CT_GetCVS "elf2flt-cvs-${CT_ELF2FLT_VERSION}"           \
    16               ":pserver:anonymous@cvs.uclinux.org:/var/cvs" \
    17               "elf2flt"                                     \
    18               "" \
    19               "elf2flt-cvs-${CT_ELF2FLT_VERSION}"
    20 }
    21 
    22 # Extract elf2flt
    23 do_elf2flt_extract() {
    24     CT_Extract "elf2flt-cvs-${CT_ELF2FLT_VERSION}"
    25     CT_Patch "elf2flt-cvs" "${CT_ELF2FLT_VERSION}"
    26 }
    27 
    28 # Build elf2flt
    29 do_elf2flt() {
    30     mkdir -p "${CT_BUILD_DIR}/build-elf2flt"
    31     cd "${CT_BUILD_DIR}/build-elf2flt"
    32 
    33     CT_DoStep INFO "Installing elf2flt"
    34 
    35     elf2flt_opts=
    36     binutils_bld=${CT_BUILD_DIR}/build-binutils
    37     binutils_src=${CT_SRC_DIR}/binutils-${CT_BINUTILS_VERSION}
    38 
    39     CT_DoLog EXTRA "Configuring elf2flt"
    40     CT_DoExecLog CFG                                            \
    41     CFLAGS="${CT_CFLAGS_FOR_HOST}"                              \
    42     "${CT_SRC_DIR}/elf2flt-cvs-${CT_ELF2FLT_VERSION}/configure" \
    43         --build=${CT_BUILD}                                     \
    44         --host=${CT_HOST}                                       \
    45         --target=${CT_TARGET}                                   \
    46         --prefix=${CT_PREFIX_DIR}                               \
    47         --with-bfd-include-dir=${binutils_bld}/bfd              \
    48         --with-binutils-include-dir=${binutils_src}/include     \
    49         --with-libbfd=${binutils_bld}/bfd/libbfd.a              \
    50         --with-libiberty=${binutils_bld}/libiberty/libiberty.a  \
    51         ${elf2flt_opts}                                         \
    52         "${CT_ELF2FLT_EXTRA_CONFIG_ARRAY[@]}"
    53 
    54     CT_DoLog EXTRA "Building elf2flt"
    55     CT_DoExecLog ALL make ${JOBSFLAGS}
    56 
    57     CT_DoLog EXTRA "Installing elf2flt"
    58     CT_DoExecLog ALL make install
    59 
    60     # Make those new tools available to the core C compilers to come.
    61     # Note: some components want the ${TARGET}-{ar,as,ld,strip} commands as
    62     # well. Create that.
    63     mkdir -p "${CT_CC_CORE_STATIC_PREFIX_DIR}/${CT_TARGET}/bin"
    64     mkdir -p "${CT_CC_CORE_STATIC_PREFIX_DIR}/bin"
    65     mkdir -p "${CT_CC_CORE_SHARED_PREFIX_DIR}/${CT_TARGET}/bin"
    66     mkdir -p "${CT_CC_CORE_SHARED_PREFIX_DIR}/bin"
    67     for t in elf2flt flthdr; do
    68         ln -sv "${CT_PREFIX_DIR}/bin/${CT_TARGET}-${t}" "${CT_CC_CORE_STATIC_PREFIX_DIR}/${CT_TARGET}/bin/${t}"
    69         ln -sv "${CT_PREFIX_DIR}/bin/${CT_TARGET}-${t}" "${CT_CC_CORE_STATIC_PREFIX_DIR}/bin/${CT_TARGET}-${t}"
    70         ln -sv "${CT_PREFIX_DIR}/bin/${CT_TARGET}-${t}" "${CT_CC_CORE_SHARED_PREFIX_DIR}/${CT_TARGET}/bin/${t}"
    71         ln -sv "${CT_PREFIX_DIR}/bin/${CT_TARGET}-${t}" "${CT_CC_CORE_SHARED_PREFIX_DIR}/bin/${CT_TARGET}-${t}"
    72     done 2>&1 |CT_DoLog ALL
    73 
    74     CT_EndStep
    75 }
    76 
    77 fi # CT_ARCH_BINFMT_FLAT