RE: [avr-chat] upgrade to 20080610 causes multiple definitions of__ltsf2

[Weddington, Eric]

> -----Original Message-----
> From: address@hidden 
> [mailto:address@hidden
>  On Behalf Of Steve Franks
> Sent: Wednesday, June 11, 2008 11:22 PM
> To: address@hidden
> Subject: [avr-chat] upgrade to 20080610 causes multiple 
> definitions of__ltsf2
> 
> Is this a known issue?  Do I need to beat on my makefile?  I'll be
> trying an mfile generated one shortly...
> 

Hi Steve,

I haven't seen this issue before. Here's a list that I keep of all known
bugs for the AVR toolchain:
<http://www.nongnu.org/avr-libc/bugs.html>


> 
> avr-g++ -IC:/WinAVR/avr/include -I../include -Ic:/projects/include  -g
> -Wall -Wno-packed -Wno-padded -Os -mmcu=atmega128 -DF_CPU=16000000UL
> -c -o ScaleStream.o ScaleStream.cpp
> avr-g++ -IC:/WinAVR/avr/include -I../include -Ic:/projects/include  -g
> -Wall -Wno-packed -Wno-padded -Os -mmcu=atmega128 -DF_CPU=16000000UL
> -c -o ADS1258Stream.o ADS1258Stream.cpp
> linking DpcMain.o -IC:/WinAVR/avr/include -I../include
> -Ic:/projects/include -g -std=gnu99 -Wall -Os -mmcu=atmega128
> -DF_CPU=16000000UL -Wl,-Map=DpcMain.map,--cref -lm -u vfprintf -u
> vfscanf -lprintf_flt -lscanf_flt (newer files: DpcMain.o DpcGlobals.o
> DpcSystem.o CmdTable.o CmdHandlers.o)
> avr-gcc -IC:/WinAVR/avr/include -I../include -Ic:/projects/include  -g
> -std=gnu99 -Wall -Os -mmcu=atmega128 -DF_CPU=16000000UL
> -Wl,-Map=DpcMain.map,--cref  -lm -u vfprintf -u vfscanf -lprintf_flt
> -lscanf_flt -o DpcMain.elf DpcMain.o DpcGlobals.o DpcSystem.o
> CmdTable.o CmdHandlers.o CmdSystem.o DpcStream.o LimitStream.o
> ScaleStream.o ADS1258Stream.o
> c:/winavr/bin/../lib/gcc/avr/4.3.0/../../../../avr/lib/avr51\l
> ibc.a(cmpsf2.o):
> In function `__lesf2':
> (.text.fplib+0x0): multiple definition of `__ltsf2'
> c:/winavr/bin/../lib/gcc/avr/4.3.0/avr51\libgcc.a(_lt_sf.o):(.
> text+0x0):
> first defined here
> gmake: *** [DpcMain.elf] Error 1
> >Exit code: 2

I will note that, in general, you shouldn't call avr-g++ directly, but
instead call avr-gcc and it will correctly call the C++ compiler,
usually based on the extension of the file name. There have been issues
with calling avr-g++ directly.

Also, what are you upgrading from? WinAVR 20071221?