view auto/endianess @ 4311:45272aab5eea

Unlock of shared memory zones on process crash. If process exited abnormally while holding lock on some shared memory zone - unlock it. It may be not safe thing to do (as crash with lock held may result in corrupted shared memory structure, and other processes will subsequently crash while trying to access shared data), therefore complain loudly if unlock succeeds.
author Maxim Dounin <mdounin@mdounin.ru>
date Wed, 23 Nov 2011 14:09:19 +0000
parents 694d285ec752
children d620f497c50f
line wrap: on
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# Copyright (C) Igor Sysoev


echo $ngx_n "checking for system endianess ...$ngx_c"
echo >> $NGX_ERR
echo "checking for system endianess" >> $NGX_ERR


cat << END > $NGX_AUTOTEST.c

int main() {
    int i = 0x11223344;
    char *p;

    p = (char *) &i;
    if (*p == 0x44) return 0;
    return 1;
}

END

ngx_test="$CC $CC_TEST_FLAGS $CC_AUX_FLAGS \
          -o $NGX_AUTOTEST $NGX_AUTOTEST.c $NGX_LD_OPT $ngx_feature_libs"

eval "$ngx_test >> $NGX_AUTOCONF_ERR 2>&1"

if [ -x $NGX_AUTOTEST ]; then
    if $NGX_AUTOTEST >/dev/null 2>&1; then
        echo " little endianess"
        have=NGX_HAVE_LITTLE_ENDIAN . auto/have
    else
        echo " big endianess"
    fi

    rm $NGX_AUTOTEST*

else
    rm $NGX_AUTOTEST*

    echo
    echo "$0: error: can not detect system endianess"
    exit 1
fi