• Jan Beulich's avatar
    kbuild: strip generated symbols from *.ko · ad7a953c
    Jan Beulich authored
    This patch changes the way __crc_ symbols are being resolved from
    using ld to do so to using the assembler, thus allowing these symbols
    to be marked local (the linker creates then as global ones) and hence
    allow stripping (for modules) or ignoring (for vmlinux) them. While at
    this, also strip other generated symbols during module installation.
    One potentially debatable point is the handling of the flags passeed
    to gcc when translating the intermediate assembly file into an object:
    passing $(c_flags) unchanged doesn't work as gcc passes --gdwarf2 to
    gas whenever is sees any -g* option, even for -g0, and despite the
    fact that the compiler would have already produced all necessary debug
    info in the C->assembly translation phase. I took the approach of just
    filtering out all -g* options, but an alternative to such negative
    filtering might be to have a positive filter which might, in the ideal
    case allow just all the -Wa,* options to pass through.
    Signed-off-by: default avatarJan Beulich <jbeulich@novell.com>
    Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>