Many thanks for all the replies. I will have to work through the responses but I think there is an installation issue and a misunderstanding on my part.
Sean -----Original Message----- From: Georg-Johann Lay [mailto:a...@gjlay.de] Sent: Sunday, 14 April 2013 12:16 AM To: Sean Cc: avr-gcc-list@nongnu.org Subject: Re: [avr-gcc-list] Unable to link using libm.a and libc.a Sean schrieb: > I've been attempting to compile and link an Ada programme for the > Arduino. > > I have managed to get a simple programme compiled linked and running > on an AtMega328p board. But when I start to use some of the more > complex functions I obviously had to start using avrlibc. > > I've down loaded and built avrlibc and I have then attempted to link > my programme. But no matter how I try to tell the compiler/linker to > use libc or libm I keep getting link issues: > > avr-gnatbind --RTS=C:\GNAT\2012\lib\gcc\avr\4.5.4\rts-zfp -nostdlib > -I- -x C:\Arduino\Arduino_Ada\BMP085\obj\main.ali > > avr-gnatlink C:\Arduino\Arduino_Ada\BMP085\obj\main.ali > C:\Arduino\Arduino_Ada\BMP085\\obj\crtm328p._o -nostdlib -lgcc -lc -lm > -mavr5 -Tdata=0x00800200 -mmcu=avr5 -g -nostdlib > C:\avr-ada-1.2.0_bin\avr\onewire\lib\libonewire.a > C:\avr-ada-1.2.0_bin\avr\debug\lib\libdebug.a > C:\avr-ada-1.2.0_bin\avr\crc Why are you -nostdlib? The missing functions below are standard functions from libc / libgcc. > [...] undefined reference to `memcmp' > [...] undefined reference to `itoa' > [...] undefined reference to `__udivmodqi4' > [...] undefined reference to `__udivmodhi4' > [...] many more Also make sure that the libraries are fitting the compiler version, see the 4.7 release notes. http://gcc.gnu.org/gcc-4.7/changes.html Johann _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org https://lists.nongnu.org/mailman/listinfo/avr-gcc-list
