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    SubjectDetecting endianness in scripts/
    Presently there doesn't seem to be any way to determine whether the
    target is big or little endian, and it is assumed that the compiler will
    do the right thing by default. Unfortunately this can not be assumed,
    and mismatches ensue, resulting in the linker bailing out.

    The only obvious solution I saw was to pass in KBUILD_CFLAGS and ld_flags
    along with $(CC) and $(LD) to the script, and killing off the hardcoded
    flags. This at least gets things building, but that still leaves objcopy
    and objdump as the odd ones out. On the other hand, the format can be figured
    out by objdumping the object and reading in the file format line, but people
    obviously do not have consistent naming for these, and a double-pass would
    be needed -- once for establishing little or big, followed by figuring out
    which set of regexes to use.

    The CONFIG_64BIT test could likewise be adopted for testing endianness, but
    not all architectures have config options for endian selections. Likewise, a
    simple test program to check if __LITTLE_ENDIAN is set or not won't work
    without having knowledge of KBUILD_CFLAGS, in which case it seems saner just
    to pass it off as a starting point.

    Any better ideas?


    diff --git a/scripts/ b/scripts/
    index 7a17677..de2cc42 100644
    --- a/scripts/
    +++ b/scripts/
    @@ -201,7 +201,8 @@ endif
    cmd_record_mcount = perl $(srctree)/scripts/ "$(ARCH)" \
    "$(if $(CONFIG_64BIT),64,32)" \
    - "$(OBJDUMP)" "$(OBJCOPY)" "$(CC)" "$(LD)" "$(NM)" "$(RM)" "$(MV)" "$(@)";
    + "$(OBJDUMP)" "$(OBJCOPY)" "$(CC) $(KBUILD_CFLAGS)" \
    + "$(LD) $(ld_flags)" "$(NM)" "$(RM)" "$(MV)" "$(@)";

    define rule_cc_o_c

     \ /
      Last update: 2008-11-26 09:43    [W:0.027 / U:39.048 seconds]
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