-[ Tue, Apr 07, 2009 at 04:11:31PM +0200, Anas Alzouhbi ]---- > but I obtained an error message like I don't include math.h
If you were not including math.h gcc (the compiler) would complain about unknown symbol 'sqrt'. > 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 Here the linker complains about being unable to find the definition of sqrt. You need to add the math library (libm) in this command line, using the "-lm" switch. _______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
