333baf2f05
Since Buildroot commit [1] tesseract-ocr fails to build with gcc 7,
with error:
src/api/baseapi.cpp:67:10: fatal error: filesystem: No such file or directory
#include <filesystem> // for std::filesystem
^~~~~~~~~~~~
In Buildroot, tesseract-ocr has a C++17 requirement captured as
gcc >= 7. Gcc 7 has only a partial and experimental C++17 support,
which was sufficient, prior [1].
The tesseract-ocr upstream commit [2] introduced a usage of
std::filesystem. This commit is included in version 5.5.0,
bumped in [1].
The C++17 with std::filesystem support was introduced in gcc 8.1.
See [3].
This commit fixes the issue by raising the gcc version requirement to
8.x.
Fixes: f32da8b984
[1] f32da8b984
[2] 4e42f9de54
[3] https://gcc.gnu.org/gcc-8/changes.html#libstdcxx
Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
(cherry picked from commit 22ffdea9e6)
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