Hi Günther, On Thu, Feb 28, 2019 at 9:52 PM Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
when trying to build m68k:defconfig with gcc-8.3.0 (built using buildall), I get the following error. m68k-linux-ld: drivers/rtc/rtc-proc.o: in function `is_rtc_hctosys.isra.0': rtc-proc.c:(.text+0x2a0): undefined reference to `strcmp' rtc-proc.c doesn't actually call strcmp(); it calls strncmp(), but it looks like the compiler optimizes it away. The same problem is also seen in a few other places when trying to build m68k:allmodconfig. In each instance, the compiler replaces strncmp() with strcmp(). I don't see the build failure with any other target, even though the same optimization happens there as well. Do you have an idea what is going on, and what I might have to do to fix the problem (presumably in the toolchain) ?
A fix for this is queued in my for-v5.1 branch: https://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k.git/commit/?h=for-v5.1&id=28713169d879b67be2ef2f84dcf54905de238294 ("m68k: Add -ffreestanding to CFLAGS"). Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
