Jaroslav, and others,
as an aside, over 50 years ago now, we were *strongly* warned against
the use of COMMON blocks in FORTRAN, for a number of reasons, mostly
relating to inhomogeneous environments, future change, and portability.
And the COMMON block still bites us, long after Hollerith cards, the
physical sort, are but a dim—thankfully—memory!
73,
Robin, G8DQX
On 10/02/2020 18:12, Jaroslav Skarvada wrote:
This is because of this gcc-10 change [1]:
* 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.
When added '-fcommon' it compiled OK.
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