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[Gm2] avr-gcc and verbose flag


From: Will Rose
Subject: [Gm2] avr-gcc and verbose flag
Date: Sun, 17 May 2015 14:53:50 +0100

The following command, which builds the standard blinky program flashled328,
produces a valid ELF file.

/opt/avr/bin/avr-gm2 -mmcu=atmega328 -g -Os -fno-exceptions -fno-pth -flibs=min flashled328.mod -o flashled328.elf

Using /opt/avr/bin/avr-gm2 -v etc doesn't - it ends with:

 /opt/avr/libexec/gcc/avr/4.7.4/collect2 -m avr5 -Tdata 0x800100 -o flashled328.elf /opt/avr/lib/gcc/avr/4.7.4/../../../../avr/lib/avr5/crtm328.o -L/opt/avr/lib/gcc/avr/4.7.4/m2/min -L/opt/avr/lib/gcc/avr/4.7.4/m2/min -L/opt/avr/lib/gcc/avr/4.7.4/avr5 -L/opt/avr/lib/gcc/avr/4.7.4/../../../../avr/lib/avr5 -L/opt/avr/bin -L/opt/avr/lib/gcc/avr/4.7.4 -L/opt/avr/lib/gcc/avr/4.7.4/../../../../avr/lib /tmp/ccU4uIP0.a -lmin -lm -lgcc -lc -lgcc
/tmp/ccU4uIP0.a(ccGXp7bfstart.o): In function `init':
/home/projects/avr/modula/flashled328_m2.cpp:19: undefined reference to `_M2_flashled328_init'
/tmp/ccU4uIP0.a(ccGXp7bfstart.o): In function `finish':
/home/projects/avr/modula/flashled328_m2.cpp:25: undefined reference to `_M2_flashled328_finish'
collect2: error: ld returned 1 exit status

Is this a bug or a feature?

Will


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