[avr-libc-dev] Not building crtm32.0

[Curtis Maloney]

Greetings,
	I've just gone through the joys of building binutils 2.16, gcc 4.0.1 and 
avr-libc 1.2.5, and have run smack into some problems.

avr-libc does not build crtm*.o unless I give --with-multilib=avr5 
(undocumented, it seems) to configure.

Fine.  Now it's built, but trying to buil my application (which built fine with 
the debian packages - binutils 2.16, gcc 3.4.3, libc 1.2.3 ) now gives the error:
avr-gcc -mmcu=atmega32 -g -Wl,-Map,bootloader.map -o bootloader.obj -Os -g 
-ffreestanding -mshort-calls -mno-tablejump -fomit-frame-pointer 
-mno-interrupts-Wall -Wextra -DF_CPU=9830400UL -mmcu=atmega32 
-Wa,-ahlms=bootloader.o  -Wl,-Ttext,0x7000 bootloader.o flash.o xmodem.o serial.o
/usr/local/lib/gcc/avr/4.0.1/../../../../avr/lib/avr5/libc.a(calloc.o): In 
function `calloc':
/home/curtis/src/avr-libc-1.2.5/libc/stdlib/calloc.c:41: undefined reference to 
`__mulhi3'


A quick bit of googling, and I turn up that someone suggests this is because 
-mmcu isn't set properly, since the mega CPUs have a hardware multiplier.

As you can see there, it's set.

What's the story?

--
Curtis Maloney
address@hidden