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  • Large files?

    From [via djgpp@delorie.com]" @21:1/5 to All on Sat Aug 15 12:16:19 2020
    Hi all,

    Does DJGPP somehow support large files?

    I'm still working on building the Schily tools. This is an excerpt
    from its "configure" script -- it detects large file support:

    cat > conftest.$ac_ext <<EOF
    #line 21399 "configure"
    #include "confdefs.h"
    #include <stdio.h>
    #include <sys/types.h>
    int main() {

    /*
    * Check that off_t can represent 2**63 - 1 correctly.
    * We can't simply "#define LARGE_OFF_T 9223372036854775807",
    * since some C++ compilers masquerading as C compilers
    * incorrectly reject 9223372036854775807.
    */
    # define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
    int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
    && LARGE_OFF_T % 2147483647 == 1)
    ? 1 : -1];
    return !fseeko;
    return !ftello;
    ; return 0; }
    EOF
    if { { eval echo configure:21419: \"$ac_compile\" ;} 1>&5; { eval
    $ac_compile ;} 2>&5; }; then
    rm -rf conftest*
    ac_cv_largefiles=yes
    else
    ..

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