Hi, I'm using a cross compiler for i386-elf to develop a boot loader. I'm using the gcc tools under cygwin if that might make a difference. The problem is an undefined reference to an existing symbol. The code is compiled with nasm and then linked with gnu ld. I'm finding ld wont link with more than 5 global symbols defined in the nasm elf object file. This is the output from the link command. $ i386-elf-ld.exe -y print -y printhex -Map loader.map -T ../../src/boot/loader .ld start.o pmi.o cpuid.o main.o int.o -o loader start.o: definition of printhex start.o: definition of print pmi.o: reference to print pmi.o: reference to printhex pmi.o: In function `initpmi': /usr/src/venom-os/src/boot/pmi.s:(.text16+0x6): undefined reference to `print' pmi.o: In function `pmdie.skip': /usr/src/venom-os/src/boot/pmi.s:(.text16+0x64): undefined reference to `print' /usr/src/venom-os/src/boot/pmi.s:(.text16+0x6): undefined reference to `print' pmi.o: In function `pmdie.skip': /usr/src/venom-os/src/boot/pmi.s:(.text16+0x64): undefined reference to `print' If I rearrange the source code to have the print label/proc appear before printhex I get the following output. $ i386-elf-ld.exe -y print -y printhex -Map loader.map -T ../../src/boot/loader .ld start.o pmi.o cpuid.o main.o int.o -o loader start.o: definition of print start.o: definition of printhex pmi.o: reference to print pmi.o: reference to printhex pmi.o: In function `pmdie': /usr/src/venom-os/src/boot/pmi.s:(.text16+0x5e): undefined reference to `printhex' So there must be something about the ordering or limit of global/extern symbols that ld is working with. The version of nasm is: NASM version 2.08.02 compiled on Jul 12 2010 and ld's version: GNU ld (GNU Binutils) 2.20.51.20100410 I can see the objects defined as globals in the nasm elf object file for start.o using objdump -t so they seemed to be defined correctly. Any help would be appreciated, thanks. -- View this message in context: http://old.nabble.com/LD-undefined-reference-to-existing-symbol-tp30641987p30641987.html Sent from the gcc - Help mailing list archive at Nabble.com.
