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scripts/build/libc/newlib.sh
author Michael Hope <michael.hope@linaro.org>
Thu Sep 29 12:40:42 2011 +1300 (2011-09-29)
changeset 2695 f2495884ca3e
parent 2352 3e4197f32a07
child 2781 504b0759c149
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 the Newlib C library

     2 # Copyright 2009 DoréDevelopment

     3 # Licensed under the GPL v2. See COPYING in the root of this package

     4 #

     5 # Edited by Martin Lund <mgl@doredevelopment.dk>

     6 #

     7 

     8 libc_newlib_version() {

     9     if [ -z "${CT_LIBC_NEWLIB_CVS}" ]; then

    10         echo "${CT_LIBC_VERSION}"

    11     else

    12         echo "cvs${CT_LIBC_VERSION:+-${CT_LIBC_VERSION}}"

    13     fi

    14 }

    15 

    16 do_libc_get() {

    17     local libc_src

    18     local avr32headers_src

    19 

    20     libc_src="ftp://sources.redhat.com/pub/newlib"

    21     avr32headers_src="http://dev.doredevelopment.dk/avr32-toolchain/sources"

    22 

    23     if [ -z "${CT_LIBC_NEWLIB_CVS}" ]; then

    24         CT_GetFile "newlib-${CT_LIBC_VERSION}" ${libc_src}

    25     else

    26         CT_GetCVS "newlib-$(libc_newlib_version)"                   \

    27                   ":pserver:anoncvs@sources.redhat.com:/cvs/src"    \

    28                   "newlib"                                          \

    29                   "${CT_LIBC_VERSION}"                              \

    30                   "newlib-$(libc_newlib_version)=src"

    31     fi

    32 

    33     if [ "${CT_ATMEL_AVR32_HEADERS}" = "y" ]; then

    34         CT_GetFile "avr32headers" ${avr32headers_src}

    35     fi

    36 }

    37 

    38 do_libc_extract() {

    39     CT_Extract "newlib-$(libc_newlib_version)"

    40     CT_Patch "newlib" "$(libc_newlib_version)"

    41 

    42     if [ "${CT_ATMEL_AVR32_HEADERS}" = "y" ]; then

    43         CT_Extract "avr32headers"

    44     fi

    45 }

    46 

    47 do_libc_check_config() {

    48     :

    49 }

    50 

    51 do_libc_start_files() {

    52     local -a newlib_opts

    53 

    54     CT_DoStep INFO "Installing C library"

    55 

    56     mkdir -p "${CT_BUILD_DIR}/build-libc"

    57     cd "${CT_BUILD_DIR}/build-libc"

    58 

    59     CT_DoLog EXTRA "Configuring C library"

    60 

    61     if [ "${CT_LIBC_NEWLIB_IO_C99FMT}" = "y" ]; then

    62         newlib_opts+=( "--enable-newlib-io-c99-formats" )

    63     else

    64         newlib_opts+=( "--disable-newlib-io-c99-formats" )

    65     fi

    66     if [ "${CT_LIBC_NEWLIB_IO_LL}" = "y" ]; then

    67         newlib_opts+=( "--enable-newlib-io-long-long" )

    68     else

    69         newlib_opts+=( "--disable-newlib-io-long-long" )

    70     fi

    71     if [ "${CT_LIBC_NEWLIB_IO_FLOAT}" = "y" ]; then

    72         newlib_opts+=( "--enable-newlib-io-float" )

    73         if [ "${CT_LIBC_NEWLIB_IO_LDBL}" = "y" ]; then

    74             newlib_opts+=( "--enable-newlib-io-long-double" )

    75         else

    76             newlib_opts+=( "--disable-newlib-io-long-double" )

    77         fi

    78     else

    79         newlib_opts+=( "--disable-newlib-io-float" )

    80         newlib_opts+=( "--disable-newlib-io-long-double" )

    81     fi

    82     if [ "${CT_LIBC_NEWLIB_DISABLE_SUPPLIED_SYSCALLS}" = "y" ]; then

    83         newlib_opts+=( "--disable-newlib-supplied-syscalls" )

    84     else

    85         newlib_opts+=( "--enable-newlib-supplied-syscalls" )

    86     fi

    87 

    88     # Note: newlib handles the build/host/target a little bit differently

    89     # than one would expect:

    90     #   build  : not used

    91     #   host   : the machine building newlib

    92     #   target : the machine newlib runs on

    93     CT_DoExecLog CFG                                    \

    94     CC_FOR_BUILD="${CT_BUILD}-gcc"                      \

    95     CFLAGS_FOR_TARGET="${CT_TARGET_CFLAGS} -O"          \

    96     AR=${CT_TARGET}-ar                                  \

    97     RANLIB=${CT_TARGET}-ranlib                          \

    98     "${CT_SRC_DIR}/newlib-$(libc_newlib_version)/configure" \

    99         --host=${CT_BUILD}                              \

   100         --target=${CT_TARGET}                           \

   101         --prefix=${CT_PREFIX_DIR}                       \

   102         "${newlib_opts[@]}"

   103 

   104     CT_DoLog EXTRA "Building C library"

   105     CT_DoExecLog ALL make ${JOBSFLAGS}

   106 

   107     CT_DoLog EXTRA "Installing C library"

   108     CT_DoExecLog ALL make install install_root="${CT_SYSROOT_DIR}"

   109 

   110     CT_EndStep

   111 }

   112 

   113 do_libc() {

   114     :

   115 }

   116 

   117 do_libc_finish() {

   118     CT_DoStep INFO "Finishing C library"

   119     

   120     if [ "${CT_ATMEL_AVR32_HEADERS}" = "y" ]; then

   121         CT_DoLog EXTRA "Installing Atmel's AVR32 headers"

   122         CT_DoExecLog ALL cp -r ${CT_SRC_DIR}/avr32headers "${CT_PREFIX_DIR}/${CT_TARGET}/include/avr32"

   123     fi

   124 

   125     CT_EndStep

   126 }
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