When trying to compile atmoslog [1] (reads temperature and humidity from TEMPerHUM USB devices), I get the following error:
mips-openwrt-linux-uclibc-gcc atmoslog.c -O2 -Wall -lusb-1.0
cc1: note: someone does not honour COPTS correctly, passed 0 times
atmoslog.c: In function 'setup_device':
atmoslog.c:180:36: warning: iteration 2u invokes undefined behavior [-Waggressive-loop-optimizations]
printf("%02x ",question[i] & 0xFF);
^
atmoslog.c:179:9: note: containing loop
for (i = 0; i < reqIntLen; i++)
^
strip a.out
strip: Unable to recognise the format of the input file `a.out'
make[3]: *** [atmoslog] Error 1
make[3]: Leaving directory `/home/tmomas/openwrt/14.07/build_dir/target-mips_34kc_uClibc-0.9.33.2/temper7402'
make[2]: *** [/home/tmomas/openwrt/14.07/build_dir/target-mips_34kc_uClibc-0.9.33.2/temper7402/.built] Error 2
make[2]: Leaving directory `/home/tmomas/openwrt/14.07/package/utils/temper7402'
make[1]: *** [package/utils/temper7402/install] Error 2
make[1]: Leaving directory `/home/tmomas/openwrt/14.07'
make: *** [package/temper7402/install] Error 2The section of atmoslog.c gcc is complaining about:
if (debug) {
for (i = 0; i < reqIntLen; i++)
printf("%02x ",question[i] & 0xFF);
printf("\n");
}I already googled "warning: iteration 2u invokes undefined behavior" and got some answers, however, since I'm not programming in C and not used to such compile erros, I don't know how to solve this.
Can someone point me in the right direction, please?
