These messages come up almost always when I compile a project:

Warning: "crti.o" not found, this will probably cause a linking failure templateSys.lpr(39,1) Warning: "crtn.o" not found, this will probably cause a linking failure.

On a 32bit system the files are located in /usr/lib/i386-gnu and /usr/lib/gcc/i686-linux-gnu

find /usr/lib -type f -name crt*

/usr/lib/i386-linux-gnu/crti.o
/usr/lib/i386-linux-gnu/crtn.o
/usr/lib/gcc/i686-linux-gnu/4.X/crtbegin.o
/usr/lib/gcc/i686-linux-gnu/4.X/crtend.o

I don't know if some of them are debug builds which may have other attributes which make them undetectable by the linker.

Some of the errors may also be related to the gnu tools and not be FPC/Lazarus related.

This issue bit me when I was trying to cross compile some synopse libraries (I have forgotten how I fixed it) and I want to know how it can be fixed permanently in my installations.