i'm hoping i'm not abusing this list overly by asking for some help with debugging an OpenWRT issue. the trac ticket is here: https://dev.openwrt.org/ticket/2735 and involves cross-compiling an image for the MIPS-based linksys WRT54GL router. i've verified that this error still exists in the latest svn update of openwrt and, in a nutshell, it involves the claim that "__builtin_ffs" is undefined: ... CC [M] /home/openwrt/builds/trunk_brcm47xx/build_dir/linux-brcm47xx/spca5xx-le/spca_core.o /home/openwrt/builds/trunk_brcm47xx/build_dir/linux-brcm47xx/spca5xx-le/spca_core.c:538:5: warning: "__builtin_ffs" is not defined /home/openwrt/builds/trunk_brcm47xx/build_dir/linux-brcm47xx/spca5xx-le/spca_core.c:538:5: error: missing binary operator before token "(" ... that line in the source file is simply: #if PUD_SHIFT i have no idea what the problem is here and, as you can see from the trac ticket, this seems to have started because of the kernel version upgrade from 2.6.22 to 2.6.23. but what about that would affect the usage of __builtin_ffs? does anyone have an idea why something this basic might be going wrong now? any suggestions appreciated. thanks. rday -- ======================================================================== Robert P. J. Day Linux Consulting, Training and Annoying Kernel Pedantry Waterloo, Ontario, CANADA http://crashcourse.ca ========================================================================
