attempt to open ... libgcc.so failed

r.stiltskin · 02-09-2014, 06:14 PM

Still plodding slowly through LFS Version 7.4.

I've completed all the steps in Section 6.10 Adjusting the Toolchain. All of the tests described in pages 98-99 are successful and out of curiosity I tried and succeeded in compiling and running a Hello World.

But when I looked through the contents of dummy.log I noticed that some attempts to open library files did fail. I ran

Code:

grep failed dummy.log

and here is the output:

Code:

attempt to open /tools/lib/gcc/x86_64-unknown-linux-gnu/4.8.1/libgcc.so failed
attempt to open /tools/lib/gcc/x86_64-unknown-linux-gnu/4.8.1/libgcc_s.so failed
attempt to open /tools/lib/gcc/x86_64-unknown-linux-gnu/4.8.1/libgcc_s.a failed
attempt to open /tools/lib/gcc/x86_64-unknown-linux-gnu/4.8.1/libc.so failed
attempt to open /tools/lib/gcc/x86_64-unknown-linux-gnu/4.8.1/libc.a failed
attempt to open /tools/lib/gcc/x86_64-unknown-linux-gnu/4.8.1/libgcc.so failed
attempt to open /tools/lib/gcc/x86_64-unknown-linux-gnu/4.8.1/libgcc_s.so failed
attempt to open /tools/lib/gcc/x86_64-unknown-linux-gnu/4.8.1/libgcc_s.a failed

On the other hand when I "grep succeeded dummy.log" I get

Code:

attempt to open /tools/lib/gcc/x86_64-unknown-linux-gnu/4.8.1/libgcc.a succeeded
attempt to open /usr/lib/../lib64/libgcc_s.so succeeded
attempt to open /usr/lib/../lib64/libc.so succeeded
attempt to open /lib64/libc.so.6 succeeded
attempt to open /usr/lib64/libc_nonshared.a succeeded
attempt to open /tools/lib/gcc/x86_64-unknown-linux-gnu/4.8.1/libgcc.a succeeded
attempt to open /usr/lib/../lib64/libgcc_s.so succeeded

(along with various other unrelated "succeeded" lines).

So, can I assume that all is well and these "fails" can be disregarded?

stoat · 02-09-2014, 08:36 PM

I think all that stuff is okay.

I built a 32-bit system, but I have equivalent results for your grep failed dummy.log test even now in my working BLFS system (except for the '/tools' part, of course).

For your second homemade test, the second line succeeded because of the symlink in /usr/lib created back in section 6.6 (I think). The third, fourth, and fifth lines succeeded because you just finished installing Glibc in /usr/lib. The sixth line is the same as the second line.

Since all of the checks in the book were correct, I would proceed on. That's my opinion anyway.

r.stiltskin · 02-09-2014, 09:46 PM

Thanks. It's reassuring to know that you have similar results on a working system.

I realize now that all of those libgcc lines aren't really relevant at this stage anyway since those libraries are part of gcc, not glibc. I just wonder why the linker is looking in /tools/lib/gcc/x86_64-unknown-linux-gnu/ for libc libraries. Maybe it will become clear later on.