Le 14/11/2022 à 11:25, Pavel Sanda a écrit :
Hi,

since (at least) fff28c57561a our master does not compile with gcc 4.9 anymore.
Also it seems that there is agreement that Qt4 won't be supported for 2.4 
either.
What should we state in the INSTALL now?

I guess that boils down to two separate questions:

- minimal (theoretical) requirements:
   I see JMarc dropped  __cplusplus >= 201402L, what it means in term of 
gcc(clang)?
   Is there someone running Qt < 5.15?

Des dropping this cause a break in gc 4.9? If so I can revert that.

I compile LyX with gcc 7.5.0 and Qt 4.8.7 on a ubuntu 18.04 VM. This is the oldest reasonable distrib I could find.

- real tested combinations:
   What are the real Qt numbers/gcc(/..) numbers we use?

gcc 9.4.0 and Qt 5.12.8 on ubuntu 20.04.

JMarc
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