Steffen Dettmer <steffen.dettmer@xxxxxxxxxxxxxx> writes: > The application size increased, exeeded 4 MB (working) and > finally around 4 MB and I ended up with the linker error > "relocation truncated to fit: R_ARM_THM_PC22": > > relocation truncated to fit: R_ARM_THM_PC22 > against symbol `_call_via_r4' defined in .text section in > /tmp/x/lib_gcc_gnu/libgcc.a(_call_via_rX.o) > ../../../../../myfile.c:238: relocation truncated to fit: R_ARM_THM_PC22 > against symbol `_call_via_r3' defined in .text section in > /tmp/x/lib_gcc_gnu/libgcc.a(_call_via_rX.o) > [more similar errors, depending on my #defines/my code various > symbols from various source files] I note that this is in libgcc.a, which will not be affected by using -mlong-calls to compile your application. > I searched the internet and read about `trampolines' and the > general possibility to have small wrapper functions in ARM code > able to execute very long calls (gigabyte range). > Compilers/linkers could theoretically automatically use such > "wrappers". This information is in contrast to the previous one. The linker does have support for this. Which version of the linker are you using? Ian
