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This change resolves compilation issues related to multiple definitions of global variables, caused by the default behavior of GCC starting from version 10, which uses the -fno-common flag by default.
Details of the Changes
Addition of the -fcommon flag:
Modified the SConstruct script to add the -fcommon flag to the compilation options.
Specific application:
CFLAGS: Used for code written in C.
CXXFLAGS: Used for code written in C++.