---- Le sam., 26 juin 2021 18:20:36 -0400 Paul Dufresne
<mailto:[email protected]> I wrote ----
>I now think that adding "external" before declarations in .h is the correct
>solution.
>If they were not mark static already, it is that the value is expected to be
>shared (being global).
>The solution is *I now think* to add external, and have the real declaration
>in a unique place, like in main.c.
I can now confirm this is a change in GCC 10 ( from
https://gcc.gnu.org/gcc-10/changes.html ):
"GCC now defaults to -fno-common. As a result, global
variable accesses are more efficient on various targets. In C, global
variables with multiple tentative definitions now result in linker errors.
With -fcommon such definitions are silently merged during
linking."
More details in:
https://gcc.gnu.org/gcc-10/porting_to.html#common
I am now realizing it can be tedious to rearrage the code to initialize stuff
only once.
-fcommon could allows us to do the bad thing for some time_______________________________________________
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