scripts/build/libc/glibc-eglibc.sh-common
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Mon Feb 21 19:27:28 2011 +0100 (2011-02-21)
changeset 2314 9e1a17fdf363
parent 2313 6336f985e2c0
child 2353 3fd8d44ba9bc
permissions -rw-r--r--
libc/glibc: fix dubious construct when installing headers

This is dubious because if the copy fails, then we'll miss the error.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
yann@2270
     1
# This file contains the functions common to glibc and eglibc
yann@850
     2
yann@2270
     3
# Build and install headers and start files
yann@850
     4
do_libc_start_files() {
yann@2271
     5
    local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}"
yann@2271
     6
yann@2277
     7
    CT_DoStep INFO "Installing C library headers & start files"
yann@850
     8
yann@850
     9
    mkdir -p "${CT_BUILD_DIR}/build-libc-startfiles"
yann@850
    10
    cd "${CT_BUILD_DIR}/build-libc-startfiles"
yann@850
    11
yann@850
    12
    CT_DoLog EXTRA "Configuring C library"
yann@850
    13
yann@2271
    14
    case "${CT_LIBC}" in
yann@2271
    15
        eglibc)
yann@2271
    16
            if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then
yann@2271
    17
                CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config
yann@2271
    18
            fi
yann@2271
    19
            ;;
yann@2271
    20
    esac
avrac@1569
    21
yann@850
    22
    cross_cc=$(CT_Which "${CT_TARGET}-gcc")
yann@850
    23
    cross_cxx=$(CT_Which "${CT_TARGET}-g++")
yann@850
    24
    cross_ar=$(CT_Which "${CT_TARGET}-ar")
yann@850
    25
    cross_ranlib=$(CT_Which "${CT_TARGET}-ranlib")
yann@2271
    26
yann@850
    27
    CT_DoLog DEBUG "Using gcc for target: '${cross_cc}'"
yann@850
    28
    CT_DoLog DEBUG "Using g++ for target: '${cross_cxx}'"
yann@850
    29
    CT_DoLog DEBUG "Using ar for target: '${cross_ar}'"
yann@850
    30
    CT_DoLog DEBUG "Using ranlib for target: '${cross_ranlib}'"
yann@850
    31
yann@2289
    32
    touch config.cache
yann@2289
    33
    if [ "${CT_LIBC_GLIBC_FORCE_UNWIND}" = "y" ]; then
yann@2289
    34
        echo "libc_cv_forced_unwind=yes" >>config.cache
yann@2289
    35
        echo "libc_cv_c_cleanup=yes" >>config.cache
yann@2289
    36
    fi
yann@2289
    37
yann@2289
    38
    # Pre-seed the configparms file with values from the config option
yann@2289
    39
    printf "${CT_LIBC_GLIBC_CONFIGPARMS}\n" > configparms
yann@2289
    40
yann@1123
    41
    BUILD_CC="${CT_BUILD}-gcc"                          \
yann@1123
    42
    CC=${cross_cc}                                      \
yann@1123
    43
    CXX=${cross_cxx}                                    \
yann@1123
    44
    AR=${cross_ar}                                      \
yann@1123
    45
    RANLIB=${cross_ranlib}                              \
anthony@2154
    46
    CT_DoExecLog CFG                                    \
yann@2271
    47
    "${src_dir}/configure"                              \
yann@1123
    48
        --prefix=/usr                                   \
yann@1123
    49
        --with-headers="${CT_HEADERS_DIR}"              \
yann@1123
    50
        --build="${CT_BUILD}"                           \
yann@1123
    51
        --host="${CT_TARGET}"                           \
yann@2289
    52
        --cache-file="$(pwd)/config.cache"              \
yann@1123
    53
        --disable-profile                               \
yann@1123
    54
        --without-gd                                    \
yann@1123
    55
        --without-cvs                                   \
yann@850
    56
        --enable-add-ons
yann@850
    57
yann@850
    58
    CT_DoLog EXTRA "Installing C library headers"
yann@850
    59
yann@850
    60
    # use the 'install-headers' makefile target to install the
yann@850
    61
    # headers
yann@2277
    62
    CT_DoExecLog ALL make ${JOBSFLAGS}              \
yann@2277
    63
                     install_root=${CT_SYSROOT_DIR} \
yann@2277
    64
                     install-bootstrap-headers=yes  \
yann@2277
    65
                     install-headers
yann@850
    66
yann@2272
    67
    # For glibc, a few headers need to be manually installed
yann@2272
    68
    if [ "${CT_LIBC}" = "glibc" ]; then
yann@2272
    69
        # Two headers -- stubs.h and features.h -- aren't installed by install-headers,
yann@2272
    70
        # so do them by hand.  We can tolerate an empty stubs.h for the moment.
yann@2272
    71
        # See e.g. http://gcc.gnu.org/ml/gcc/2002-01/msg00900.html
yann@2272
    72
        mkdir -p "${CT_HEADERS_DIR}/gnu"
yann@2272
    73
        CT_DoExecLog ALL touch "${CT_HEADERS_DIR}/gnu/stubs.h"
yann@2272
    74
        CT_DoExecLog ALL cp -v "${CT_SRC_DIR}/glibc-${CT_LIBC_VERSION}/include/features.h"  \
yann@2272
    75
                               "${CT_HEADERS_DIR}/features.h"
yann@2272
    76
yann@2272
    77
        # Building the bootstrap gcc requires either setting inhibit_libc, or
yann@2272
    78
        # having a copy of stdio_lim.h... see
yann@2272
    79
        # http://sources.redhat.com/ml/libc-alpha/2003-11/msg00045.html
yann@2272
    80
        CT_DoExecLog ALL cp -v bits/stdio_lim.h "${CT_HEADERS_DIR}/bits/stdio_lim.h"
yann@2272
    81
yann@2272
    82
        # Following error building gcc-4.0.0's gcj:
yann@2272
    83
        #  error: bits/syscall.h: No such file or directory
yann@2272
    84
        # solved by following copy; see http://sourceware.org/ml/crossgcc/2005-05/msg00168.html
yann@2272
    85
        # but it breaks arm, see http://sourceware.org/ml/crossgcc/2006-01/msg00091.html
yann@2314
    86
        case "${CT_ARCH}" in
yann@2314
    87
            arm)    ;;
yann@2314
    88
            *)  CT_DoExecLog ALL cp -v "misc/syscall-list.h"            \
yann@2314
    89
                                       "${CT_HEADERS_DIR}/bits/syscall.h"
yann@2314
    90
                ;;
yann@2314
    91
        esac
yann@2272
    92
    fi
yann@2272
    93
yann@2313
    94
    if [ "${CT_THREADS}" = "nptl" ]; then
yann@2313
    95
        CT_DoLog EXTRA "Installing C library start files"
yann@850
    96
yann@2313
    97
        # there are a few object files needed to link shared libraries,
yann@2313
    98
        # which we build and install by hand
yann@2313
    99
        CT_DoExecLog ALL mkdir -p "${CT_SYSROOT_DIR}/usr/lib"
yann@2313
   100
        CT_DoExecLog ALL make ${JOBSFLAGS} csu/subdir_lib
yann@2313
   101
        CT_DoExecLog ALL cp csu/crt1.o csu/crti.o csu/crtn.o \
yann@2313
   102
                            "${CT_SYSROOT_DIR}/usr/lib"
yann@850
   103
yann@2313
   104
        # Finally, 'libgcc_s.so' requires a 'libc.so' to link against.
yann@2313
   105
        # However, since we will never actually execute its code,
yann@2313
   106
        # it doesn't matter what it contains.  So, treating '/dev/null'
yann@2313
   107
        # as a C source file, we produce a dummy 'libc.so' in one step
yann@2313
   108
        CT_DoExecLog ALL "${cross_cc}" -nostdlib        \
yann@2313
   109
                                       -nostartfiles    \
yann@2313
   110
                                       -shared          \
yann@2313
   111
                                       -x c /dev/null   \
yann@2313
   112
                                       -o "${CT_SYSROOT_DIR}/usr/lib/libc.so"
yann@2313
   113
    fi # threads == nptl
yann@850
   114
yann@850
   115
    CT_EndStep
yann@850
   116
}
yann@850
   117
yann@2270
   118
# This function builds and install the full C library
yann@850
   119
do_libc() {
yann@2271
   120
    local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}"
yann@2276
   121
    local extra_cc_args
yann@1478
   122
    local -a extra_config
yann@2271
   123
    local -a extra_make_args
yann@2312
   124
    local glibc_cflags
yann@1478
   125
yann@850
   126
    CT_DoStep INFO "Installing C library"
yann@850
   127
yann@850
   128
    mkdir -p "${CT_BUILD_DIR}/build-libc"
yann@850
   129
    cd "${CT_BUILD_DIR}/build-libc"
yann@850
   130
yann@850
   131
    CT_DoLog EXTRA "Configuring C library"
yann@850
   132
yann@2271
   133
    case "${CT_LIBC}" in
yann@2271
   134
        eglibc)
yann@2271
   135
            if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then
yann@2271
   136
                CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config
yann@2271
   137
            fi
yann@2271
   138
            if [ "${CT_EGLIBC_OPT_SIZE}" = "y" ]; then
yann@2271
   139
                OPTIMIZE=-Os
yann@2271
   140
            else
yann@2271
   141
                OPTIMIZE=-O2
yann@2271
   142
            fi
yann@2271
   143
            ;;
yann@2276
   144
        glibc)
yann@2276
   145
            # glibc can't be built without -O2 (reference needed!)
yann@2276
   146
            OPTIMIZE=-O2
yann@2276
   147
            # Also, if those two are missing, iconv build breaks
yann@2276
   148
            extra_config+=( --disable-debug --disable-sanity-checks )
yann@2276
   149
            ;;
yann@2271
   150
    esac
richard@1796
   151
yann@850
   152
    # Add some default glibc config options if not given by user.
yann@850
   153
    # We don't need to be conditional on wether the user did set different
yann@850
   154
    # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG is passed after extra_config
yann@850
   155
yann@2273
   156
    extra_config+=("$(do_libc_min_kernel_config)")
yann@850
   157
yann@850
   158
    case "${CT_THREADS}" in
yann@1478
   159
        nptl)           extra_config+=("--with-__thread" "--with-tls");;
yann@1478
   160
        linuxthreads)   extra_config+=("--with-__thread" "--without-tls" "--without-nptl");;
yann@1478
   161
        none)           extra_config+=("--without-__thread" "--without-nptl")
yann@850
   162
                        case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
yann@850
   163
                            *-tls*) ;;
yann@1478
   164
                            *) extra_config+=("--without-tls");;
yann@850
   165
                        esac
yann@850
   166
                        ;;
yann@850
   167
    esac
yann@850
   168
yann@850
   169
    case "${CT_SHARED_LIBS}" in
yann@1478
   170
        y) extra_config+=("--enable-shared");;
yann@1478
   171
        *) extra_config+=("--disable-shared");;
yann@850
   172
    esac
yann@850
   173
yann@850
   174
    case "${CT_ARCH_FLOAT_HW},${CT_ARCH_FLOAT_SW}" in
yann@1478
   175
        y,) extra_config+=("--with-fp");;
yann@1478
   176
        ,y) extra_config+=("--without-fp");;
yann@850
   177
    esac
yann@850
   178
bryanhundven@2180
   179
    if [ "${CT_LIBC_DISABLE_VERSIONING}" = "y" ]; then
bryanhundven@2180
   180
        extra_config+=("--disable-versioning")
bryanhundven@2180
   181
    fi
bryanhundven@2180
   182
bryanhundven@2181
   183
    if [ "${CT_LIBC_OLDEST_ABI}" != "" ]; then
bryanhundven@2181
   184
        extra_config+=("--enable-oldest-abi=${CT_LIBC_OLDEST_ABI}")
bryanhundven@2181
   185
    fi
bryanhundven@2181
   186
yann@850
   187
    case "$(do_libc_add_ons_list ,)" in
yann@850
   188
        "") ;;
yann@1478
   189
        *)  extra_config+=("--enable-add-ons=$(do_libc_add_ons_list ,)");;
yann@850
   190
    esac
yann@850
   191
yann@850
   192
    extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
yann@850
   193
yann@2289
   194
    touch config.cache
yann@2289
   195
    if [ "${CT_LIBC_GLIBC_FORCE_UNWIND}" = "y" ]; then
yann@2289
   196
        echo "libc_cv_forced_unwind=yes" >>config.cache
yann@2289
   197
        echo "libc_cv_c_cleanup=yes" >>config.cache
yann@2289
   198
    fi
yann@2289
   199
yann@2276
   200
    # Pre-seed the configparms file with values from the config option
yann@2276
   201
    printf "${CT_LIBC_GLIBC_CONFIGPARMS}\n" > configparms
yann@2276
   202
yann@850
   203
    cross_cc=$(CT_Which "${CT_TARGET}-gcc")    
yann@850
   204
yann@850
   205
    CT_DoLog DEBUG "Using gcc for target:     '${cross_cc}'"
yann@850
   206
    CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"
yann@1478
   207
    CT_DoLog DEBUG "Extra config args passed: '${extra_config[*]}'"
yann@850
   208
    CT_DoLog DEBUG "Extra CC args passed    : '${extra_cc_args}'"
yann@850
   209
yann@2312
   210
    glibc_cflags="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} ${OPTIMIZE}"
yann@2312
   211
    case "${CT_LIBC_ENABLE_FORTIFIED_BUILD}" in
yann@2312
   212
        y)  ;;
yann@2312
   213
        *)  glibc_cflags+=" -U_FORTIFY_SOURCE";;
yann@2312
   214
    esac
yann@2312
   215
bryanhundven@2229
   216
    # ./configure is mislead by our tools override wrapper for bash
bryanhundven@2229
   217
    # so just tell it where the real bash is _on_the_target_!
bryanhundven@2229
   218
    # Notes:
bryanhundven@2229
   219
    # - ${ac_cv_path_BASH_SHELL} is only used to set BASH_SHELL
bryanhundven@2229
   220
    # - ${BASH_SHELL}            is only used to set BASH
bryanhundven@2229
   221
    # - ${BASH}                  is only used to set the shebang
bryanhundven@2229
   222
    #                            in two scripts to run on the target
bryanhundven@2229
   223
    # So we can safely bypass bash detection at compile time.
bryanhundven@2229
   224
    # Should this change in a future eglibc release, we'd better
bryanhundven@2229
   225
    # directly mangle the generated scripts _after_ they get built,
bryanhundven@2229
   226
    # or even after they get installed... eglibc is such a sucker...
yann@2289
   227
    echo "ac_cv_path_BASH_SHELL=/bin/bash" >>config.cache
bryanhundven@2229
   228
yann@2276
   229
    # Configure with --prefix the way we want it on the target...
yann@2276
   230
    # There are a whole lot of settings here.  You'll probably want
yann@2276
   231
    # to read up on what they all mean, and customize a bit, possibly by setting GLIBC_EXTRA_CONFIG
yann@2276
   232
    # Compare these options with the ones used when installing the glibc headers above - they're different.
yann@2276
   233
    # Adding "--without-gd" option to avoid error "memusagestat.c:36:16: gd.h: No such file or directory"
yann@2276
   234
    # See also http://sources.redhat.com/ml/libc-alpha/2000-07/msg00024.html.
yann@2276
   235
    # Set BUILD_CC, or we won't be able to build datafiles
yann@2276
   236
yann@1041
   237
    BUILD_CC="${CT_BUILD}-gcc"                                      \
yann@2312
   238
    CFLAGS="${glibc_cflags}"                                        \
yann@850
   239
    CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \
yann@850
   240
    AR=${CT_TARGET}-ar                                              \
yann@850
   241
    RANLIB=${CT_TARGET}-ranlib                                      \
anthony@2154
   242
    CT_DoExecLog CFG                                                \
yann@2271
   243
    "${src_dir}/configure"                                          \
yann@850
   244
        --prefix=/usr                                               \
yann@1041
   245
        --build=${CT_BUILD}                                         \
yann@850
   246
        --host=${CT_TARGET}                                         \
yann@2289
   247
        --cache-file="$(pwd)/config.cache"                          \
yann@2276
   248
        --without-cvs                                               \
yann@850
   249
        --disable-profile                                           \
yann@850
   250
        --without-gd                                                \
yann@2276
   251
        --with-headers="${CT_HEADERS_DIR}"                          \
yann@1478
   252
        "${extra_config[@]}"                                        \
yann@850
   253
        ${CT_LIBC_GLIBC_EXTRA_CONFIG}
yann@850
   254
    
yann@2276
   255
    # build hacks
yann@2276
   256
    case "${CT_ARCH},${CT_ARCH_CPU}" in
yann@2276
   257
        powerpc,8??)
yann@2276
   258
            # http://sourceware.org/ml/crossgcc/2008-10/msg00068.html
yann@2276
   259
            CT_DoLog DEBUG "Activating support for memset on broken ppc-8xx (CPU15 erratum)"
yann@2276
   260
            extra_make_args+=( ASFLAGS="-DBROKEN_PPC_8xx_CPU15" )
yann@2271
   261
            ;;
yann@1328
   262
    esac
yann@1328
   263
yann@2276
   264
    CT_DoLog EXTRA "Building C library"
yann@2277
   265
    CT_DoExecLog ALL make ${JOBSFLAGS}                      \
yann@2276
   266
                          "${extra_make_args[@]}"           \
yann@2276
   267
                          all
yann@850
   268
yann@850
   269
    CT_DoLog EXTRA "Installing C library"
yann@2277
   270
    CT_DoExecLog ALL make ${JOBSFLAGS}                      \
yann@2276
   271
                          "${extra_make_args[@]}"           \
yann@2276
   272
                          install_root="${CT_SYSROOT_DIR}"  \
yann@2276
   273
                          install
yann@850
   274
yann@850
   275
    CT_EndStep
yann@850
   276
}
yann@850
   277
yann@2270
   278
# This function finishes the C library install
yann@2270
   279
# This is a no-op
yann@850
   280
do_libc_finish() {
yann@850
   281
    :
yann@850
   282
}
yann@850
   283
yann@850
   284
# Build up the addons list, separated with $1
yann@850
   285
do_libc_add_ons_list() {
yann@850
   286
    local sep="$1"
yann@2274
   287
    local addons_list="$( echo "${CT_LIBC_ADDONS_LIST}"         \
yann@2274
   288
                          |sed -r -e "s/[[:space:],]/${sep}/g;" \
yann@2274
   289
                        )"
yann@850
   290
    case "${CT_THREADS}" in
yann@850
   291
        none)   ;;
yann@850
   292
        *)      addons_list="${addons_list}${sep}${CT_THREADS}";;
yann@850
   293
    esac
yann@850
   294
    [ "${CT_LIBC_GLIBC_USE_PORTS}" = "y" ] && addons_list="${addons_list}${sep}ports"
yann@2274
   295
    # Remove duplicate, leading and trailing separators
yann@2274
   296
    echo "${addons_list}" |sed -r -e "s/${sep}+/${sep}/g; s/^${sep}//; s/${sep}\$//;"
yann@850
   297
}
yann@2273
   298
yann@2273
   299
# Compute up the minimum supported Linux kernel version
yann@2273
   300
do_libc_min_kernel_config() {
yann@2273
   301
    local min_kernel_config
yann@2273
   302
yann@2273
   303
    case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
yann@2273
   304
        *--enable-kernel*) ;;
yann@2273
   305
        *)  if [ "${CT_LIBC_GLIBC_KERNEL_VERSION_AS_HEADERS}" = "y" ]; then
yann@2273
   306
                # We can't rely on the kernel version from the configuration,
yann@2273
   307
                # because it might not be available if the user uses pre-installed
yann@2273
   308
                # headers. On the other hand, both method will have the kernel
yann@2279
   309
                # version installed in "usr/include/linux/version.h" in the sysroot.
yann@2273
   310
                # Parse that instead of having two code-paths.
yann@2273
   311
                version_code_file="${CT_SYSROOT_DIR}/usr/include/linux/version.h"
yann@2273
   312
                if [ ! -f "${version_code_file}" -o ! -r "${version_code_file}" ]; then
yann@2273
   313
                    CT_Abort "Linux version is unavailable in installed headers files"
yann@2273
   314
                fi
yann@2273
   315
                version_code="$( grep -E LINUX_VERSION_CODE "${version_code_file}"  \
yann@2273
   316
                                 |cut -d ' ' -f 3                                   \
yann@2273
   317
                               )"
yann@2273
   318
                version=$(((version_code>>16)&0xFF))
yann@2273
   319
                patchlevel=$(((version_code>>8)&0xFF))
yann@2273
   320
                sublevel=$((version_code&0xFF))
yann@2273
   321
                min_kernel_config="${version}.${patchlevel}.${sublevel}"
yann@2273
   322
            elif [ "${CT_LIBC_GLIBC_KERNEL_VERSION_CHOSEN}" = "y" ]; then
yann@2273
   323
                # Trim the fourth part of the linux version, keeping only the first three numbers
yann@2276
   324
                min_kernel_config="$( echo "${CT_LIBC_GLIBC_MIN_KERNEL_VERSION}"            \
yann@2276
   325
                                      |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;' \
yann@2273
   326
                                    )"
yann@2273
   327
            fi
yann@2273
   328
            echo "--enable-kernel=${min_kernel_config}"
yann@2273
   329
            ;;
yann@2273
   330
    esac
yann@2273
   331
}