[Bug 2035094] Re: On rpi400/AARCH64 it doesn't search for user defined libraries in the selected folders.

[Dave Jones]

Can you attach your program.c so I can attempt a reproduction here?
Also, you mention the system was upgraded - can you recall which version
you upgraded from? (I'll attempt reproduction on a fresh system, but if
that fails, I can set up an upgraded variant to see if there's a
significant difference).

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Title:
  On rpi400/AARCH64 it doesn't search for user defined libraries in the
  selected folders.

Status in gcc-defaults package in Ubuntu:
  New

Bug description:
  $ neofetch
  OS: Ubuntu MATE 22.04.3 LTS aarch64
  Host: Raspberry Pi 400 Rev 1.0
  Kernel: 5.15.0-1036-raspi

  $ lsb_release -rd
  Description:	Ubuntu 22.04.3 LTS
  Release:	22.04

  $ apt-cache policy gcc
  gcc:
    Installed: 4:11.2.0-1ubuntu1
    Candidate: 4:11.2.0-1ubuntu1
    Version table:
   *** 4:11.2.0-1ubuntu1 500
          500 http://ports.ubuntu.com jammy/main arm64 Packages
          100 /var/lib/dpkg/status

  $ ls /usr/lib/aarch64-linux-gnu/libSDL2*
  /usr/lib/aarch64-linux-gnu/libSDL2-2.0.so
  /usr/lib/aarch64-linux-gnu/libSDL2-2.0.so.0
  /usr/lib/aarch64-linux-gnu/libSDL2-2.0.so.0.18.2
  /usr/lib/aarch64-linux-gnu/libSDL2.a
  /usr/lib/aarch64-linux-gnu/libSDL2main.a
  /usr/lib/aarch64-linux-gnu/libSDL2.so
  /usr/lib/aarch64-linux-gnu/libSDL2_test.a

  Expected:
  $ gcc -O2 $(pkg-config --cflags --libs sdl2) program.c -o program && echo $?
  0
  $ gcc -O2 -c $(pkg-config --cflags --libs sdl2) program.c -o program.o && echo $?
  0
  $ gcc -O2 $(pkg-config --libs sdl2) program.o -o program && echo $?
  0
  $ ld.gold $(pkg-config --libs sdl2) program.o -o program && echo $?
  0
  $ ld.bfd $(pkg-config --libs sdl2) program.o -o program && echo $?
  ld.bfd: warning: cannot find entry symbol _start; defaulting to 00000000004002e0
  0
  $ ld $(pkg-config --libs sdl2) program.o -o program && echo $?
  ld.bfd: warning: cannot find entry symbol _start; defaulting to 00000000004002e0
  0

  What happened:
  $ gcc -O2 $(pkg-config --cflags --libs sdl2) program.c -o program && echo $?
  (...) ld exit 1
  1
  $ gcc -O2 -c $(pkg-config --cflags sdl2) program.c -o program.o && echo $?
  0
  $ gcc -O2 $(pkg-config --libs sdl2) program.o -o program && echo $?
  (...) ld exit 1
  1
  $ gcc -O2 -L/usr/lib/aarch64-linux-gnu $(pkg-config --libs sdl2) program.o -o program && echo $?
  (...) ld exit 1
  1
  $ strace gcc -O2 -L/usr/lib/aarch64-linux-gnu $(pkg-config --libs sdl2) program.o -o program && echo $?
  (...) does an faccess to see if dir exists and can be acceessed, never tries to list a directory or ever access any form of libSDL2.0.so
  $ clang -O2 $(pkg-config --libs --cflags sdl2) program.c -o program && echo $?
  0
  $ ld.gold $(pkg-config --libs sdl2) program.o -o program && echo $?
  0
  $ ld.bfd $(pkg-config --libs sdl2) program.o -o program && echo $?
  ld.bfd: warning: cannot find entry symbol _start; defaulting to 00000000004002e0
  0

  This also fails with gcc-12, it might be affecting g++ and g++-12
  package

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: gcc 4:11.2.0-1ubuntu1
  ProcVersionSignature: Ubuntu 5.15.0-1036.39-raspi 5.15.111
  Uname: Linux 5.15.0-1036-raspi aarch64
  ApportVersion: 2.20.11-0ubuntu82.5
  Architecture: arm64
  CasperMD5CheckResult: unknown
  CurrentDesktop: MATE
  Date: Mon Sep 11 13:50:14 2023
  ImageMediaBuild: 20220703
  SourcePackage: gcc-defaults
  UpgradeStatus: No upgrade log present (probably fresh install)

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