[Bug 1937844] [NEW] arm-linux-gnueabi-gcc pgo build fails

[Fabio Gobbato]

Public bug reported:

These are the errors made by the compiler.

/usr/lib/gcc-cross/arm-linux-gnueabi/9/../../../../arm-linux-gnueabi/bin/ld: /tmp/Prova_linuxarmv7.IKA0IY.ltrans0.ltrans.o: in function `Func1.constprop.0':
<artificial>:(.text+0xfdc): undefined reference to `__gcov_one_value_profiler_atomic'
/usr/lib/gcc-cross/arm-linux-gnueabi/9/../../../../arm-linux-gnueabi/bin/ld: /tmp/Prova_linuxarmv7.IKA0IY.ltrans0.ltrans.o: in function `Func2.lto_priv.0':
<artificial>:(.text+0x1364): undefined reference to `__gcov_one_value_profiler_atomic'
/usr/lib/gcc-cross/arm-linux-gnueabi/9/../../../../arm-linux-gnueabi/bin/ld: <artificial>:(.text+0x1878): undefined reference to `__gcov_one_value_profiler_atomic'
/usr/lib/gcc-cross/arm-linux-gnueabi/9/../../../../arm-linux-gnueabi/bin/ld: <artificial>:(.text+0x2004): undefined reference to `__gcov_one_value_profiler_atomic'
/usr/lib/gcc-cross/arm-linux-gnueabi/9/../../../../arm-linux-gnueabi/bin/ld: <artificial>:(.text+0x2134): undefined reference to `__gcov_one_value_profiler_atomic'
/usr/lib/gcc-cross/arm-linux-gnueabi/9/../../../../arm-linux-gnueabi/bin/ld: /tmp/Prova_linuxarmv7.IKA0IY.ltrans1.ltrans.o:<artificial>:(.text+0x37c): more undefined references to `__gcov_one_value_profiler_atomic' follow
collect2: error: ld returned 1 exit status

This is the compilation command:
arm-linux-gnueabi-gcc ./main.c -s -static -pthread -O3 -flto -std=gnu11 -DNDEBUG -Wall -Wextra -lm -march=armv7-a -mfpu=neon -mfloat-abi=softfp -DNEON -o ./Prova_linuxarmv7 -fprofile-generate -lgcov

The same command without "-fprofile-generate -lgcov" works well.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gcc-9-arm-linux-gnueabi 9.3.0-17ubuntu1~20.04cross2
ProcVersionSignature: Ubuntu 5.8.0-59.66~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-59-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.18
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Fri Jul 23 17:04:24 2021
InstallationDate: Installed on 2020-05-01 (448 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
SourcePackage: gcc-9-cross
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: gcc-9-cross (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal

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https://bugs.launchpad.net/bugs/1937844

Title:
  arm-linux-gnueabi-gcc pgo build fails

Status in gcc-9-cross package in Ubuntu:
  New

Bug description:
  These are the errors made by the compiler.

  /usr/lib/gcc-cross/arm-linux-gnueabi/9/../../../../arm-linux-gnueabi/bin/ld: /tmp/Prova_linuxarmv7.IKA0IY.ltrans0.ltrans.o: in function `Func1.constprop.0':
  <artificial>:(.text+0xfdc): undefined reference to `__gcov_one_value_profiler_atomic'
  /usr/lib/gcc-cross/arm-linux-gnueabi/9/../../../../arm-linux-gnueabi/bin/ld: /tmp/Prova_linuxarmv7.IKA0IY.ltrans0.ltrans.o: in function `Func2.lto_priv.0':
  <artificial>:(.text+0x1364): undefined reference to `__gcov_one_value_profiler_atomic'
  /usr/lib/gcc-cross/arm-linux-gnueabi/9/../../../../arm-linux-gnueabi/bin/ld: <artificial>:(.text+0x1878): undefined reference to `__gcov_one_value_profiler_atomic'
  /usr/lib/gcc-cross/arm-linux-gnueabi/9/../../../../arm-linux-gnueabi/bin/ld: <artificial>:(.text+0x2004): undefined reference to `__gcov_one_value_profiler_atomic'
  /usr/lib/gcc-cross/arm-linux-gnueabi/9/../../../../arm-linux-gnueabi/bin/ld: <artificial>:(.text+0x2134): undefined reference to `__gcov_one_value_profiler_atomic'
  /usr/lib/gcc-cross/arm-linux-gnueabi/9/../../../../arm-linux-gnueabi/bin/ld: /tmp/Prova_linuxarmv7.IKA0IY.ltrans1.ltrans.o:<artificial>:(.text+0x37c): more undefined references to `__gcov_one_value_profiler_atomic' follow
  collect2: error: ld returned 1 exit status

  This is the compilation command:
  arm-linux-gnueabi-gcc ./main.c -s -static -pthread -O3 -flto -std=gnu11 -DNDEBUG -Wall -Wextra -lm -march=armv7-a -mfpu=neon -mfloat-abi=softfp -DNEON -o ./Prova_linuxarmv7 -fprofile-generate -lgcov

  The same command without "-fprofile-generate -lgcov" works well.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: gcc-9-arm-linux-gnueabi 9.3.0-17ubuntu1~20.04cross2
  ProcVersionSignature: Ubuntu 5.8.0-59.66~20.04.1-generic 5.8.18
  Uname: Linux 5.8.0-59-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.18
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Jul 23 17:04:24 2021
  InstallationDate: Installed on 2020-05-01 (448 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  SourcePackage: gcc-9-cross
  UpgradeStatus: No upgrade log present (probably fresh install)

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