On 06/06/12 09:27, DamienDaG wrote: > Hi > > I'm trying to build a very simple project composed of one source file and a > linker script : > (...) > This file is compiled with command : > gcc -O0 -xc -g -Wall -c f1.c -of1.o > then build with : > ld -T'Link.cmd' -O0 -Map out.map -o rename.exe f1.o > > file Link.cmd contains : > > fct1_wrongname = fct9 ; > > end of file Link.cmd > > > Function fct1_wrongname doesn't exist, and I want to replace the call of > this function by a call of fct9. > > I always get this error message : > Link.cmd:4: undefined symbol `fct9' referenced in expression > > I need to use a linker script (here Link.cmd) to apply this to a larger > project, and I can't use symbol definition (i.e. -D"fct1_wrongname=fct9") > because there are to many symbols. > I've been looking for a solution for a long time, but I couldn't find > anything. > > Can anybody help me ? > > Thanks in advance > > Damien Works for me on Linux. Just with that code I get undefined reference to `puts' (puts instead of printf due to a gcc optimization), which was solved just by adding -L/usr/lib -lc, and then I needed to add -dynamic-linker because the default interpreter was the missing /lib/ld64.so.1 (that's ELF specific, as you're building a PE you don't need to worry). It dies by sigkill as soon as i try to run it, though :S Adding crti.o crtbegin.o crtend.o crtn.o doesn't solve the crashing. I tried adding a dummy to make an alias, and it worked: Just create a file link.s with content: -- begin file -- .global fct1_wrongname .set fct1_wrongname, fct9 fct1_wrongname: -- end of file-- And add it to the compilation *before* f1.c: gcc link.s f1.c -o rename.exe (there are probably many things wrong with this approach, but it apparently works)
