Can't install gfortran on Jetson TX1?

douglasrizzom · August 30, 2020, 7:59pm

Hi everyone. I am trying to install TensorFlow 2 on the TX1, which has scipy as a dependency, which needs gfortran to be compiled from source. I have seen a few tutorials here in the forums [1] [2] [3] which tell me that I could just sudo apt install gfortran, but apt tells me this package does not exist, so I am stuck.

Any advice?

linuxdev · August 30, 2020, 8:16pm

You might just need a slight change to the package name, e.g., a version. What do you see from:
apt search gfortran

(or, with a pager: apt search gfortran | less)

douglasrizzom · August 31, 2020, 5:37am

The whole output was 1500 lines long. I hope this summary helps.

There was no gfortran package. There were options for gfortran-4.8, gfortran-5, gfortran-6, gfortran-8 and some armeabi and armeabihf variants.

I was able to install gfortran-6, will make an alias gfortran=gfortran-6 for it and try to install scipy again.

douglasrizzom · August 31, 2020, 4:11pm

No luck. I was able to install gfortran-4.8 and gfortran-6, but the scipy compilation procedure still complained that no Fortran compiler was installed.

I created an alias to these applications, but that didn’t work either.

Here is the output of apt search gfortran:

Sorting...
Full Text Search...
gfortran-4.8/bionic 4.8.5-4ubuntu8 arm64
  GNU Fortran compiler

gfortran-4.8-doc/bionic,bionic 4.8.5-4ubuntu8 all
  Documentation for the GNU Fortran compiler (gfortran)

gfortran-4.8-multilib/bionic 4.8.5-4ubuntu8 armhf
  GNU Fortran compiler (multilib support)

gfortran-5/bionic 5.5.0-12ubuntu1 arm64
  GNU Fortran compiler

gfortran-5-arm-linux-gnueabi/bionic 5.5.0-12ubuntu1cross1 arm64
  GNU Fortran compiler

gfortran-5-arm-linux-gnueabihf/bionic 5.5.0-12ubuntu1cross1 arm64
  GNU Fortran compiler

gfortran-5-doc/bionic,bionic 5.5.0-12ubuntu1 all
  Documentation for the GNU Fortran compiler (gfortran)

gfortran-5-i686-linux-gnu/bionic 5.5.0-12ubuntu1cross1 arm64
  GNU Fortran compiler

gfortran-5-multilib/bionic 5.5.0-12ubuntu1 armhf
  GNU Fortran compiler (multilib support)

gfortran-5-multilib-arm-linux-gnueabi/bionic 5.5.0-12ubuntu1cross1 arm64
  GNU Fortran compiler (multilib support)

gfortran-5-multilib-arm-linux-gnueabihf/bionic 5.5.0-12ubuntu1cross1 arm64
  GNU Fortran compiler (multilib support)

gfortran-5-multilib-i686-linux-gnu/bionic 5.5.0-12ubuntu1cross1 arm64
  GNU Fortran compiler (multilib support)

gfortran-5-multilib-x86-64-linux-gnux32/bionic 5.5.0-12ubuntu1cross1 arm64
  GNU Fortran compiler (multilib support)

gfortran-5-x86-64-linux-gnux32/bionic 5.5.0-12ubuntu1cross1 arm64
  GNU Fortran compiler

gfortran-6/bionic-updates,now 6.5.0-2ubuntu1~18.04 arm64 [installed]
  GNU Fortran compiler

gfortran-6-arm-linux-gnueabi/bionic-updates 6.5.0-2ubuntu1~18.04cross1 arm64
  GNU Fortran compiler

gfortran-6-arm-linux-gnueabihf/bionic-updates 6.5.0-2ubuntu1~18.04cross1 arm64
  GNU Fortran compiler

gfortran-6-doc/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04 all
  Documentation for the GNU Fortran compiler (gfortran)

gfortran-6-i686-linux-gnu/bionic-updates 6.5.0-2ubuntu1~18.04cross1 arm64
  GNU Fortran compiler

gfortran-6-multilib/bionic-updates 6.5.0-2ubuntu1~18.04 armhf
  GNU Fortran compiler (multilib support)

gfortran-6-multilib-arm-linux-gnueabi/bionic-updates 6.5.0-2ubuntu1~18.04cross1 arm64
  GNU Fortran compiler (multilib support)

gfortran-6-multilib-arm-linux-gnueabihf/bionic-updates 6.5.0-2ubuntu1~18.04cross1 arm64
  GNU Fortran compiler (multilib support)

gfortran-6-multilib-i686-linux-gnu/bionic-updates 6.5.0-2ubuntu1~18.04cross1 arm64
  GNU Fortran compiler (multilib support)

gfortran-6-multilib-x86-64-linux-gnu/bionic-updates 6.5.0-2ubuntu1~18.04cross1 arm64
  GNU Fortran compiler (multilib support)

gfortran-6-multilib-x86-64-linux-gnux32/bionic-updates 6.5.0-2ubuntu1~18.04cross1 arm64
  GNU Fortran compiler (multilib support)

gfortran-6-x86-64-linux-gnu/bionic-updates 6.5.0-2ubuntu1~18.04cross1 arm64
  GNU Fortran compiler

gfortran-6-x86-64-linux-gnux32/bionic-updates 6.5.0-2ubuntu1~18.04cross1 arm64
  GNU Fortran compiler

gfortran-7-arm-linux-gnueabi/bionic-updates,bionic-security 7.5.0-3ubuntu1~18.04cross1 arm64
  GNU Fortran compiler

gfortran-7-arm-linux-gnueabihf/bionic-updates,bionic-security 7.5.0-3ubuntu1~18.04cross1 arm64
  GNU Fortran compiler

gfortran-7-i686-linux-gnu/bionic-updates,bionic-security 7.5.0-3ubuntu1~18.04cross1 arm64
  GNU Fortran compiler

gfortran-7-multilib-arm-linux-gnueabi/bionic-updates,bionic-security 7.5.0-3ubuntu1~18.04cross1 arm64
  GNU Fortran compiler (multilib support) (cross compiler for armel architecture)

gfortran-7-multilib-arm-linux-gnueabihf/bionic-updates,bionic-security 7.5.0-3ubuntu1~18.04cross1 arm64
  GNU Fortran compiler (multilib support) (cross compiler for armhf architecture)

gfortran-7-multilib-i686-linux-gnu/bionic-updates,bionic-security 7.5.0-3ubuntu1~18.04cross1 arm64
  GNU Fortran compiler (multilib support) (cross compiler for i386 architecture)

gfortran-7-multilib-s390x-linux-gnu/bionic-updates,bionic-security 7.5.0-3ubuntu1~18.04cross1 arm64
  GNU Fortran compiler (multilib support) (cross compiler for s390x architecture)

gfortran-7-multilib-x86-64-linux-gnu/bionic-updates,bionic-security 7.5.0-3ubuntu1~18.04cross1 arm64
  GNU Fortran compiler (multilib support) (cross compiler for amd64 architecture)

gfortran-7-multilib-x86-64-linux-gnux32/bionic-updates,bionic-security 7.5.0-3ubuntu1~18.04cross1 arm64
  GNU Fortran compiler (multilib support) (cross compiler for x32 architecture)

gfortran-7-powerpc64le-linux-gnu/bionic-updates,bionic-security 7.5.0-3ubuntu1~18.04cross1 arm64
  GNU Fortran compiler

gfortran-7-riscv64-linux-gnu/bionic-updates,bionic-security 7.5.0-3ubuntu1~18.04cross1 arm64
  GNU Fortran compiler

gfortran-7-s390x-linux-gnu/bionic-updates,bionic-security 7.5.0-3ubuntu1~18.04cross1 arm64
  GNU Fortran compiler

gfortran-7-x86-64-linux-gnu/bionic-updates,bionic-security 7.5.0-3ubuntu1~18.04cross1 arm64
  GNU Fortran compiler

gfortran-7-x86-64-linux-gnux32/bionic-updates,bionic-security 7.5.0-3ubuntu1~18.04cross1 arm64
  GNU Fortran compiler

gfortran-8/bionic-updates,bionic-security 8.4.0-1ubuntu1~18.04 arm64
  GNU Fortran compiler

gfortran-8-arm-linux-gnueabi/bionic-updates,bionic-security 8.4.0-1ubuntu1~18.04cross2 arm64
  GNU Fortran compiler

gfortran-8-arm-linux-gnueabihf/bionic-updates,bionic-security 8.4.0-1ubuntu1~18.04cross2 arm64
  GNU Fortran compiler

gfortran-8-doc/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04 all
  Documentation for the GNU Fortran compiler (gfortran)

gfortran-8-i686-linux-gnu/bionic-updates,bionic-security 8.4.0-1ubuntu1~18.04cross2 arm64
  GNU Fortran compiler

gfortran-8-multilib/bionic-updates,bionic-security 8.4.0-1ubuntu1~18.04 armhf
  GNU Fortran compiler (multilib support)

gfortran-8-multilib-arm-linux-gnueabi/bionic-updates,bionic-security 8.4.0-1ubuntu1~18.04cross2 arm64
  GNU Fortran compiler (multilib support) (cross compiler for armel architecture)

gfortran-8-multilib-arm-linux-gnueabihf/bionic-updates,bionic-security 8.4.0-1ubuntu1~18.04cross2 arm64
  GNU Fortran compiler (multilib support) (cross compiler for armhf architecture)

gfortran-8-multilib-i686-linux-gnu/bionic-updates,bionic-security 8.4.0-1ubuntu1~18.04cross2 arm64
  GNU Fortran compiler (multilib support) (cross compiler for i386 architecture)

gfortran-8-multilib-s390x-linux-gnu/bionic-updates,bionic-security 8.4.0-1ubuntu1~18.04cross2 arm64
  GNU Fortran compiler (multilib support) (cross compiler for s390x architecture)

gfortran-8-multilib-x86-64-linux-gnu/bionic-updates,bionic-security 8.4.0-1ubuntu1~18.04cross2 arm64
  GNU Fortran compiler (multilib support) (cross compiler for amd64 architecture)

gfortran-8-multilib-x86-64-linux-gnux32/bionic-updates,bionic-security 8.4.0-1ubuntu1~18.04cross1 arm64
  GNU Fortran compiler (multilib support) (cross compiler for x32 architecture)

gfortran-8-powerpc64le-linux-gnu/bionic-updates,bionic-security 8.4.0-1ubuntu1~18.04cross2 arm64
  GNU Fortran compiler

gfortran-8-riscv64-linux-gnu/bionic-updates,bionic-security 8.4.0-1ubuntu1~18.04cross1 arm64
  GNU Fortran compiler

gfortran-8-s390x-linux-gnu/bionic-updates,bionic-security 8.4.0-1ubuntu1~18.04cross2 arm64
  GNU Fortran compiler

gfortran-8-x86-64-linux-gnu/bionic-updates,bionic-security 8.4.0-1ubuntu1~18.04cross2 arm64
  GNU Fortran compiler

gfortran-8-x86-64-linux-gnux32/bionic-updates,bionic-security 8.4.0-1ubuntu1~18.04cross1 arm64
  GNU Fortran compiler

gfortran-arm-linux-gnueabi/bionic-updates,bionic-security 4:7.4.0-1ubuntu2.3 arm64
  GNU Fortran 95 compiler for the armel architecture

gfortran-arm-linux-gnueabihf/bionic-updates,bionic-security 4:7.4.0-1ubuntu2.3 arm64
  GNU Fortran 95 compiler for the armhf architecture

gfortran-i686-linux-gnu/bionic-updates,bionic-security 4:7.4.0-1ubuntu2.3 arm64
  GNU Fortran 95 compiler for the i386 architecture

gfortran-mingw-w64/bionic,bionic 7.3.0-11ubuntu1+20.2build1 all
  GNU Fortran compiler for MinGW-w64

gfortran-mingw-w64-i686/bionic 7.3.0-11ubuntu1+20.2build1 arm64
  GNU Fortran compiler for MinGW-w64 targeting Win32

gfortran-mingw-w64-x86-64/bionic 7.3.0-11ubuntu1+20.2build1 arm64
  GNU Fortran compiler for MinGW-w64 targeting Win64

gfortran-multilib-arm-linux-gnueabi/bionic-updates,bionic-security 4:7.4.0-1ubuntu2.3 arm64
  GNU Fortran 95 compiler for the armel architecture

gfortran-multilib-arm-linux-gnueabihf/bionic-updates,bionic-security 4:7.4.0-1ubuntu2.3 arm64
  GNU Fortran 95 compiler for the armhf architecture

gfortran-multilib-i686-linux-gnu/bionic-updates,bionic-security 4:7.4.0-1ubuntu2.3 arm64
  GNU Fortran 95 compiler for the i386 architecture

gfortran-multilib-s390x-linux-gnu/bionic-updates,bionic-security 4:7.4.0-1ubuntu2.3 arm64
  GNU Fortran 95 compiler for the s390x architecture

gfortran-multilib-x86-64-linux-gnu/bionic-updates,bionic-security 4:7.4.0-1ubuntu2.3 arm64
  GNU Fortran 95 compiler for the amd64 architecture

gfortran-multilib-x86-64-linux-gnux32/bionic-updates,bionic-security 4:7.4.0-1ubuntu1.3 arm64
  GNU Fortran 95 compiler for the x32 architecture

gfortran-powerpc64le-linux-gnu/bionic-updates,bionic-security 4:7.4.0-1ubuntu2.3 arm64
  GNU Fortran 95 compiler for the ppc64el architecture

gfortran-riscv64-linux-gnu/bionic-updates,bionic-security 4:7.4.0-1ubuntu1.3 arm64
  GNU Fortran 95 compiler for the riscv64 architecture

gfortran-s390x-linux-gnu/bionic-updates,bionic-security 4:7.4.0-1ubuntu2.3 arm64
  GNU Fortran 95 compiler for the s390x architecture

gfortran-x86-64-linux-gnu/bionic-updates,bionic-security 4:7.4.0-1ubuntu2.3 arm64
  GNU Fortran 95 compiler for the amd64 architecture

gfortran-x86-64-linux-gnux32/bionic-updates,bionic-security 4:7.4.0-1ubuntu1.3 arm64
  GNU Fortran 95 compiler for the x32 architecture

lib32gfortran-5-dev-mips64-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-5-dev-mips64el-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-5-dev-ppc64-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-5-dev-s390x-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-5-dev-sparc64-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-5-dev-x32-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-6-dev-amd64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-6-dev-mips64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-6-dev-mips64el-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-6-dev-ppc64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-6-dev-s390x-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-6-dev-sparc64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-6-dev-x32-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-7-dev-amd64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-7-dev-mips64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-7-dev-mips64el-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-7-dev-ppc64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-7-dev-s390x-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-7-dev-sparc64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-7-dev-x32-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-8-dev-amd64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-8-dev-mips64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-8-dev-mips64el-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-8-dev-ppc64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-8-dev-s390x-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-8-dev-sparc64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran-8-dev-x32-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit development files)

lib32gfortran3-amd64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran3-dbg-amd64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran3-dbg-mips64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran3-dbg-mips64el-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran3-dbg-ppc64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran3-dbg-s390x-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran3-dbg-sparc64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran3-dbg-x32-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran3-mips64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran3-mips64el-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran3-ppc64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran3-s390x-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran3-sparc64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran3-x32-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran4-amd64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran4-dbg-amd64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran4-dbg-mips64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran4-dbg-mips64el-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran4-dbg-ppc64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran4-dbg-s390x-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran4-dbg-sparc64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran4-dbg-x32-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran4-mips64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran4-mips64el-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran4-ppc64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran4-s390x-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran4-sparc64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran4-x32-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran5-amd64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran5-dbg-amd64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran5-dbg-mips64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran5-dbg-mips64el-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran5-dbg-ppc64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran5-dbg-s390x-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran5-dbg-sparc64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran5-dbg-x32-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32 bit debug symbols)

lib32gfortran5-mips64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran5-mips64el-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran5-ppc64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran5-s390x-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran5-sparc64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib32gfortran5-x32-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (32bit)

lib64gfortran-5-dev-i386-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-5-dev-mips-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-5-dev-mipsel-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-5-dev-powerpc-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-5-dev-x32-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-6-dev-i386-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-6-dev-mips-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-6-dev-mipsel-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-6-dev-powerpc-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-6-dev-x32-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-7-dev-i386-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-7-dev-mips-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-7-dev-mipsel-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-7-dev-powerpc-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-7-dev-x32-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-8-dev-i386-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-8-dev-mips-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-8-dev-mipsel-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-8-dev-powerpc-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran-8-dev-x32-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit development files)

lib64gfortran3-dbg-i386-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit debug symbols)

lib64gfortran3-dbg-mips-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit debug symbols)

lib64gfortran3-dbg-mipsel-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit debug symbols)

lib64gfortran3-dbg-powerpc-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit debug symbols)

lib64gfortran3-dbg-x32-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit debug symbols)

lib64gfortran3-i386-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit)

lib64gfortran3-mips-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit)

lib64gfortran3-mipsel-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit)

lib64gfortran3-powerpc-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit)

lib64gfortran3-x32-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit)

lib64gfortran4-dbg-i386-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit debug symbols)

lib64gfortran4-dbg-mips-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit debug symbols)

lib64gfortran4-dbg-mipsel-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit debug symbols)

lib64gfortran4-dbg-powerpc-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit debug symbols)

lib64gfortran4-dbg-x32-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit debug symbols)

lib64gfortran4-i386-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit)

lib64gfortran4-mips-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit)

lib64gfortran4-mipsel-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit)

lib64gfortran4-powerpc-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit)

lib64gfortran4-x32-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit)

lib64gfortran5-dbg-i386-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (64bit debug symbols)

lib64gfortran5-dbg-mips-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit debug symbols)

lib64gfortran5-dbg-mipsel-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit debug symbols)

lib64gfortran5-dbg-powerpc-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (64bit debug symbols)

lib64gfortran5-dbg-x32-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit debug symbols)

lib64gfortran5-i386-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (64bit)

lib64gfortran5-mips-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (64bit)

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  Runtime library for GNU Fortran applications (64bit)

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  Runtime library for GNU Fortran applications (64bit)

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  Runtime library for GNU Fortran applications (64bit)

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libcoarrays-dev/bionic 2.0.0~rc1-2 arm64
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  Runtime library for GNU Fortran applications (development files)

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  Runtime library for GNU Fortran applications (development files)

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  Runtime library for GNU Fortran applications (development files)

libgfortran-5-dev-arm64-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (development files)

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  Runtime library for GNU Fortran applications (development files)

libgfortran-5-dev-armhf-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-5-dev-i386-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-5-dev-m68k-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-5-dev-mips-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-5-dev-mips64-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-5-dev-mips64el-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-5-dev-mipsel-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-5-dev-powerpc-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-5-dev-powerpcspe-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-5-dev-ppc64-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-5-dev-ppc64el-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-5-dev-s390x-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-5-dev-sh4-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-5-dev-sparc64-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-5-dev-x32-cross/bionic,bionic 5.5.0-12ubuntu1cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev/bionic-updates,now 6.5.0-2ubuntu1~18.04 arm64 [installed,automatic]
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-alpha-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-amd64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-arm64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-armel-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-armhf-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-hppa-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-i386-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-m68k-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-mips-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-mips64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-mips64el-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-mipsel-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-powerpc-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-powerpcspe-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-ppc64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-ppc64el-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-s390x-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-sh4-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-sparc64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-6-dev-x32-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-alpha-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-amd64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-arm64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-armel-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-armhf-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-hppa-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-i386-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-m68k-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-mips-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-mips64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-mips64el-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-mipsel-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-powerpc-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-powerpcspe-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-ppc64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-ppc64el-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-riscv64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-s390x-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-sh4-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-7-dev-sparc64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

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  Runtime library for GNU Fortran applications (development files)

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  Runtime library for GNU Fortran applications (development files)

libgfortran-8-dev-alpha-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-8-dev-amd64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-8-dev-arm64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-8-dev-armel-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-8-dev-armhf-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-8-dev-hppa-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-8-dev-i386-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-8-dev-m68k-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-8-dev-mips-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-8-dev-mips64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-8-dev-mips64el-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-8-dev-mipsel-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

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  Runtime library for GNU Fortran applications (development files)

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  Runtime library for GNU Fortran applications (development files)

libgfortran-8-dev-ppc64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-8-dev-ppc64el-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-8-dev-riscv64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-8-dev-s390x-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-8-dev-sh4-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

libgfortran-8-dev-sparc64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (development files)

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  Runtime library for GNU Fortran applications (development files)

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

libgfortran3-amd64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications

libgfortran3-arm64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications

libgfortran3-armel-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications

libgfortran3-armhf-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications (debug symbols)

libgfortran3-dbg-alpha-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (debug symbols)

libgfortran3-dbg-amd64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (debug symbols)

libgfortran3-dbg-arm64-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (debug symbols)

libgfortran3-dbg-armel-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

libgfortran3-dbg-ppc64el-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (debug symbols)

libgfortran3-dbg-s390x-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications

libgfortran3-i386-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

libgfortran3-mips-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

libgfortran3-powerpcspe-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

libgfortran3-ppc64el-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications

libgfortran3-s390x-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications

libgfortran3-sh4-cross/bionic-updates,bionic-updates 6.5.0-2ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

libgfortran4-dbg-ppc64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (debug symbols)

libgfortran4-dbg-ppc64el-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (debug symbols)

libgfortran4-dbg-riscv64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (debug symbols)

libgfortran4-dbg-s390x-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

libgfortran4-hppa-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

libgfortran4-s390x-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 7.5.0-3ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

libgfortran5/bionic-updates,bionic-security 8.4.0-1ubuntu1~18.04 arm64
  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

libgfortran5-dbg/bionic-updates,bionic-security 8.4.0-1ubuntu1~18.04 arm64
  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

libgfortran5-dbg-amd64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (debug symbols)

libgfortran5-dbg-arm64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (debug symbols)

libgfortran5-dbg-armel-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (debug symbols)

libgfortran5-dbg-armhf-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

libgfortran5-dbg-m68k-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (debug symbols)

libgfortran5-dbg-mips-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (debug symbols)

libgfortran5-dbg-mips64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (debug symbols)

libgfortran5-dbg-mips64el-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (debug symbols)

libgfortran5-dbg-mipsel-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

libgfortran5-dbg-powerpcspe-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (debug symbols)

libgfortran5-dbg-ppc64-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications (debug symbols)

libgfortran5-dbg-ppc64el-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

libgfortran5-dbg-s390x-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross2 all
  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications (debug symbols)

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

libgfortran5-mipsel-cross/bionic-updates,bionic-updates,bionic-security,bionic-security 8.4.0-1ubuntu1~18.04cross1 all
  Runtime library for GNU Fortran applications

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  Runtime library for GNU Fortran applications

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linuxdev · August 31, 2020, 8:44pm

FYI, those variants are older ARMv7-a 32-bit. The TX1 is 64-bit ARMv8-a. Unless we are talking about a cross compiler, or possibly if 32-bit compatibility linker and libraries were installed (a really bad idea so far as disk space and performance is concerned), you would want to ignore all 32-bit variants (you won’t find armeabi or armhf of use).

I suppose that Fortran has been around for such a long time, and used with cross compilers and then put on much larger supercomputers, that it will have “copious quantities” of all kinds of cross environment packages.

If it says “cross” or “armhf” or “armeabi” (or “armeabihf”), then you can safely ignore the package for native use on the Jetson. This is probably why those packages were ignored by your software…those packages would work, but the output would not work in the Jetson’s local native world.

I was unsuccessful at telling apt to search only for arm64, but you might find this useful:
apt search gfortran | less -i -p 'arm64'
…this will still list all architectures, but “less” will do a case insensitive highlight of all occurrences of “arm64” (you could also set the search pattern from within “less”). The “n” key will search forward for the next match of “arm64”, and the “p” key will search in reverse for the previous match of “arm64”. You might find a valid version for your use.

Just a thought: You might be able to obtain compiler source code and build it yourself on the Jetson. I won’t kid you, the odds are low and the amount of disk space and time and effort to build a toolchain is very high. You would probably end up doing a lot of searching for specific versions of related tools, building that yourself, and then using the related tools to build the actual tools. You would have to be very motivated to build gfortran from source on a Jetson.

douglasrizzom · September 1, 2020, 3:13pm

Is the Jetson TX1 unique in the fact it does not have a suitable gfortran package? Other answers for the TX2 and Nano explicitly point users to install the gfortran package [1] [2] [3] when facing this issue.

@AastaLLL, do you know anything about this issue? I’m marking you since you’re in the threads I mentioned.

linuxdev · September 1, 2020, 3:46pm

The Jetson is not unique. The 64-bit ARM is perhaps something nobody has yet had enough interest in to compile in that architecture. For this case you may need to build the tool yourself.

douglasrizzom · September 1, 2020, 4:30pm

But aren’t all Jetson modules ARM-based? (The Nano seems to be, while the TX2 seems to have 2 different CPU architectures)

In the links I provided, it looks like people are able to apt install gfortran in other Jetson modules. That’s why I wonder if this a TX1-specific problem in the Jetson ecosystem.

linuxdev · September 1, 2020, 4:40pm

Earlier Tegra products, from Jetson TK1 and older, are arm32/armhf. From the TX1 and later they are arm64. Arm64 is much newer than is the older arm32. There are a lot of embedded devices using either architecture, but I’ve not heard of any used for gfortran build. Basically C/C++/Python are the popular languages.

If other people can install gfortran with apt, then either they have a different repository enabled, or perhaps they are using arm32/armhf. The actual Jetson hardware is in no way limiting this…only the package availability. If you have the package, then it should install no differently than on any other computer able to run gfortran. Perhaps someone who succeeded can give you the result of the command “arch”. If it is “arm64” or “aarch64”, then you should ask them (assuming Ubuntu) to see a copy of their “/etc/apt/sources.list”. You could also ask if they had to manually download or install anything prior to apt working.

dusty_nv · September 1, 2020, 4:45pm

When I do sudo apt-get install gfortran on JetPack 4.4, it tries to install gfortran-7:

The following additional packages will be installed:
  gfortran-7 libgfortran-7-dev
Suggested packages:
  gfortran-doc gfortran-7-doc libgfortran4-dbg libcoarrays-dev
The following NEW packages will be installed:
  gfortran gfortran-7 libgfortran-7-dev

Not sure why this one is missing on @douglasrizzom system - what version of JetPack are you running?

Can you find it listed by searching https://packages.ubuntu.com/?