undefined reference to `_gfortran_transfer_character_write'

Question

==================================== The following command line for a "hello world"

program 

/usr/bin/gfortran -std=f95 -Wextra -Wall -O2 -c main.for

==================================== produces the following errors.

cc -std=f95 -Wextra -Wall -O2  main.o -o main
/usr/lib64/gcc/x86_64-suse-linux/7/../../../../x86_64-suse-linux/bin/ld: main.o: in function `MAIN__':
main.for:(.text+0x2a): undefined reference to `_gfortran_st_write'
/usr/lib64/gcc/x86_64-suse-linux/7/../../../../x86_64-suse-linux/bin/ld: main.for:(.text+0x3c): undefined reference to `_gfortran_transfer_character_write'
/usr/lib64/gcc/x86_64-suse-linux/7/../../../../x86_64-suse-linux/bin/ld: main.for:(.text+0x44): undefined reference to `_gfortran_st_write_done'
/usr/lib64/gcc/x86_64-suse-linux/7/../../
/usr/lib64/gcc/x86_64-suse-linux/7/../../../../x86_64-suse-linux/bin/ld: main.for:(.text.startup+0x14): undefined reference to `_gfortran_set_options'
collect2: error: ld returned 1 exit status../../x86_64-suse-linux/bin/ld: main.o: in function `main':
main.for:(.text.startup+0x5): undefined reference to `_gfortran_set_args'
/usr/lib64/gcc/x86_64-suse-linux/7/../../../../x86_64-suse-linux/bin/ld: main.for:(.text.startup+0x14): undefined reference to `_gfortran_set_options'
collect2: error: ld returned 1 exit status
make: *** [makefile:44: main] Error 1

Does this answer your question? [C++/Fortran mixed programming: undefined reference to \`\_gfortran\_reshape\_r8'](https://stackoverflow.com/questions/39239624/c-fortran-mixed-programming-undefined-reference-to-gfortran-reshape-r8) — Vladimir F Героям слава, Apr 14 '23 at 08:41
Another https://stackoverflow.com/questions/19148378/gfortran-pow-c8-i4-error-when-linking-o-files-from-g-and-gfortran-using-g — Vladimir F Героям слава, Apr 14 '23 at 08:42

score 0 · Answer 1 · answered Jan 23 '20 at 19:25

This error occurs on both windows+cygwin and on linux.

In both cases there were two versions of gfortran installed, the default V7 and a user configured V8.

Checking the installs with >gfortran --version, worked worked in both cases (windows+cygwin and linux.), with no errors.

======================== My solution was to first eradicate all versions of gfortran and then second, reinstall the default version. I'm still figuring out how to install a user configured version.

score 0 · Answer 2 · answered Apr 14 '23 at 06:37

0

You may need to link gfortran library with -lgfortran

answered Apr 14 '23 at 06:37

user21640326

1

Why do you think so? How does that work? Why does it help? – Yunnosch Apr 14 '23 at 06:44
@Yunnosch the missing symbol is from the libgfortran runtime library. This is a common problem with many duplicates. – Vladimir F Героям слава Apr 14 '23 at 08:41

undefined reference to `_gfortran_transfer_character_write'

2 Answers2