view auto/endianness @ 8067:b347fe705ff2

Win32: disabled C4306 warnings with MSVC. Multiple C4306 warnings (conversion from 'type1' to 'type2' of greater size) appear during 64-bit compilation with MSVC 2010 (and older) due to extensively used constructs like "(void *) -1", so they were disabled. In newer MSVC versions C4306 warnings were replaced with C4312 ones, and these are not generated for such trivial type casts.
author Maxim Dounin <mdounin@mdounin.ru>
date Wed, 07 Sep 2022 00:47:07 +0300
parents e3faa5fb7772
children
line wrap: on
line source


# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


echo $ngx_n "checking for system byte ordering ...$ngx_c"

cat << END >> $NGX_AUTOCONF_ERR

----------------------------------------
checking for system byte ordering

END


cat << END > $NGX_AUTOTEST.c

int main(void) {
    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 endian"
        have=NGX_HAVE_LITTLE_ENDIAN . auto/have
    else
        echo " big endian"
    fi

    rm -rf $NGX_AUTOTEST*

else
    rm -rf $NGX_AUTOTEST*

    echo
    echo "$0: error: cannot detect system byte ordering"
    exit 1
fi