cflags gcc / -fno-strict-aliasing

Tar.Aldarion

Hello I am trying to run some code, I know it works. However these warnings/errors are being thrown:

[root@XPS BlinkToRadio]# make micaz install mib510,/dev/ttyUSB0
mkdir -p build/micaz
    compiling BlinkToRadioAppC to a micaz binary
ncc -o build/micaz/main.exe  -Os -Wall -Wshadow -Wnesc-all -target=micaz -fnesc-cfile=build/micaz/app.c -board=micasb -DDEFINED_TOS_AM_GROUP=0x22 --param max-inline-insns-single=100000 -DIDENT_APPNAME=\"BlinkToRadioApp\" -DIDENT_USERNAME=\"root\" -DIDENT_HOSTNAME=\"XPS\" -DIDENT_USERHASH=0x0e919144L -DIDENT_TIMESTAMP=0x4c57f411L -DIDENT_UIDHASH=0x80c2d5c6L -fnesc-dump=wiring -fnesc-dump='interfaces(!abstract())' -fnesc-dump='referenced(interfacedefs, components)' -fnesc-dumpfile=build/micaz/wiring-check.xml BlinkToRadioAppC.nc -lm 
/opt/tinyos-2.x/tos/chips/cc2420/lpl/DummyLplC.nc:39:2: warning: #warning "*** LOW POWER COMMUNICATIONS DISABLED ***"
/opt/tinyos-2.x/tos/lib/timer/VirtualizeTimerC.nc: In function 'VirtualizeTimerC$0$fireTimers':
/usr/lib/ncc/nesc_nx.h:272: warning: dereferencing pointer 'btrpkt' does break strict-aliasing rules
/usr/lib/ncc/nesc_nx.h:272: warning: dereferencing pointer 'btrpkt' does break strict-aliasing rules
BlinkToRadioC.nc:45: note: initialized from here
/usr/lib/ncc/nesc_nx.h:283: warning: dereferencing pointer 'header' does break strict-aliasing rules
/opt/tinyos-2.x/tos/chips/cc2420/packet/CC2420PacketP.nc:100: note: initialized from here
/usr/lib/ncc/nesc_nx.h:253: warning: dereferencing pointer 'header' does break strict-aliasing rules
/opt/tinyos-2.x/tos/chips/cc2420/packet/CC2420PacketP.nc:100: note: initialized from here
/usr/lib/ncc/nesc_nx.h:253: warning: dereferencing pointer 'result' does break strict-aliasing rules
/opt/tinyos-2.x/tos/chips/cc2420/packet/CC2420PacketP.nc:100: note: initialized from here
/usr/lib/ncc/nesc_nx.h:248: warning: dereferencing pointer 'header' does break strict-aliasing rules
/opt/tinyos-2.x/tos/chips/cc2420/packet/CC2420PacketP.nc:100: note: initialized from here
/usr/lib/ncc/nesc_nx.h:278: warning: dereferencing pointer 'header' does break strict-aliasing rules
/opt/tinyos-2.x/tos/chips/cc2420/packet/CC2420PacketP.nc:100: note: initialized from here
/usr/lib/gcc/avr/4.4.2/../../../../avr/bin/ld: BFD 2.17 internal error, aborting at reloc.c line 445 in bfd_get_reloc_size

/usr/lib/gcc/avr/4.4.2/../../../../avr/bin/ld: Please report this bug.

make: *** [exe0] Error 1

I was wondering did anybody know how to turn off strict aliasing or know what the avr errors being thrown at the bottom are?

Thanks

rfrederick

Hmm, dunno where to start to troubleshoot. I've honestly never built any applications for embedded systems. Have you tried another build environment? Or, I guess, what is the environment you're building the embedded application/component in?

Tar.Aldarion

Hello, thanks for the reply. It's done now. I just deleted Fedora in anger(ha), tired of it's constant errors. Installed Ubuntu and everything works fine now.

rfrederick

Heh, I was wondering if it was a distro-specific build problem. Good to know you have it going.

Tar.Aldarion

Thanks, no idea why it was doing that, probably some little version of something. Was at it sooooo long. Ubuntu 10.04 working like a dream

rfrederick

Fedora seems to be a bit more bleeding-edge (and subsequently a bit more incompatible with things) than Ubuntu, even though Ubuntu is derived from snapshots of Debian Sid (their unstable version).

Tar.Aldarion

Believe me, the million errors I got, it can keep it's bleeding edge...grand unless I have to work on it.