I run successfully a program written in http://www.enricozini.org/2008/tips/accelerometers.html to read the Freerunner's accelerometers but I did another program like the precedent, but I added #include <math.h> and in the void: void processInputEvents(FILE* in) I added only these lines: x2 = pow (x,2); y2 = pow (y,2); dom = sqrt (x2 + y2); and I compiled my program with toolchain, so I did this command: make but I obtained an error message like I don't include math.h the output was: ccache arm-angstrom-linux-gnueabi-gcc -march=armv4t -mtune=arm920t -std=gnu99 -I. -isystem/usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/include -Wall -pedantic -std=c99 -fexpensive-optimizations -fomit-frame-pointer -frename-registers -Os -c -o inclinaison.o inclinaison.c inclinaison.c: In function ‘processInputEvents’: inclinaison.c:11: warning: unused variable ‘inclinaison’ arm-angstrom-linux-gnueabi-gcc -march=armv4t -mtune=arm920t -std=gnu99 -Wall -pedantic -std=c99 -fexpensive-optimizations -fomit-frame-pointer -frename-registers -Os -L/usr/local/openmoko/arm/arm-angstrom-linux-gnueabi/usr/lib -o inclinaison inclinaison.o inclinaison.o: In function `processInputEvents': inclinaison.c:(.text+0x128): undefined reference to `sqrt' collect2: ld returned 1 exit status make: *** [all] Error 1
what could be the reason?? and what should I do?? _______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
