William Tambe <tambewilliam@xxxxxxxxx> writes: > On Tue, Aug 20, 2019 at 11:44 AM Richard Sandiford > <richard.sandiford@xxxxxxx> wrote: >> >> William Tambe <tambewilliam@xxxxxxxxx> writes: >> > I am running into an issue with both gcc-8.3.0 and gcc-9.2.0 where a >> > null-pointer function call is being done within >> > __do_global_dtors_aux() which is defined in crtstuff.c . >> > >> > I have attempted to build GCC using the following export: >> > export CFLAGS_FOR_TARGET="-g -save-temps -fverbose-asm" >> > but the assembly file crtstuff.s do not contain the function >> > __do_global_dtors_aux() even-though its source file crtstuff.c has its >> > definition. >> > >> > Any idea ? >> >> libgcc is a bit awkward in that it uses the same source file to >> compile multiple object files. E.g. both crtbegin.o and crtend.o >> come from crtstuff.c, so which crtstuff.s you end up with depends >> on the build order. >> >> You should see the definition if you remake crtbegin.o specifically >> (or whichever variant you're looking at, such as crtbeginT.o). > > How must "make" be invoked to remake only crtbegin.o ? Just "rm crtbegin.o ; make crtbegin.o" within the libgcc build directory should be enough. Richard
