On Fri, 9 Oct 2015 13:38:25 -0700 Jim Davis <jim.epost@xxxxxxxxx> wrote: > Building with the attached random configuration file, > > lib/built-in.o: In function `__bitrev32': > deftree.c:(.text+0x1e799): undefined reference to `byte_rev_table' > deftree.c:(.text+0x1e7a0): undefined reference to `byte_rev_table' > deftree.c:(.text+0x1e7b4): undefined reference to `byte_rev_table' > deftree.c:(.text+0x1e7c1): undefined reference to `byte_rev_table' This is really irritating. We save 287 bytes in kernels which don't use bitrev. It isn't worth the hassle, but let's keep plugging. From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Subject: lib/Kconfig: ZLIB_DEFLATE must select BITREVERSE lib/built-in.o: In function `__bitrev32': deftree.c:(.text+0x1e799): undefined reference to `byte_rev_table' deftree.c:(.text+0x1e7a0): undefined reference to `byte_rev_table' deftree.c:(.text+0x1e7b4): undefined reference to `byte_rev_table' deftree.c:(.text+0x1e7c1): undefined reference to `byte_rev_table' Anything which uses bitrevX() has to select BITREVERSE, to grab lib/bitrev.o. Reported-by: Jim Davis <jim.epost@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- lib/Kconfig | 1 + 1 file changed, 1 insertion(+) diff -puN lib/Kconfig~lib-kconfig-zlib_deflate-must-select-bitreverse lib/Kconfig --- a/lib/Kconfig~lib-kconfig-zlib_deflate-must-select-bitreverse +++ a/lib/Kconfig @@ -220,6 +220,7 @@ config ZLIB_INFLATE config ZLIB_DEFLATE tristate + select BITREVERSE config LZO_COMPRESS tristate _ -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
