The LOGOG_COUT is equal to std::cout if the LOGOG_UNICODE
is *not* defined.

Lubby2 MFront

Bump compiler and use std::filesystem

Dmitri Naumov authored 4 years ago and Lars Bilke committed 4 years ago

Adapt tests.

This reverts commit 4c0d64f1e26302fa5d67b869d96acbe086874cb9.

On Ubuntu 19.04 Docker image with gcc 8.3 it did not work but on
Eve gcc 8.3 it does work.

8.3 did not work with tests based on std::filesystem:

Bug report: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90050

Even linking with -lstdc++fs did not help. 8.4 works, 9.2.1 too.

Fixes #942.

Include "filesystem.h" (a generated header file) which provides
fs namespace:

...
auto geo_file = fs::temp_directory_path() /= "createSurface.geo";

Requires CMake 3.14

Requires gcc 8.