On Thu, Jan 23, 2020 at 04:48:14PM +0100, Robert-André Mauchin wrote:
How to fix the affected packages? For some I ised extern and it
worked but for
other using extern resulted in error like:
/usr/bin/ld: /builddir/build/BUILD/uTox-0.17.1/src/xlib/main.c:590: undefined
reference to `font_small_lineheight'
Lots of undefined reference despite the var being marked as global. All the
packages I have to fix have deadish upstream.
The variables should be declared with extern in the header files and defined
somewhere, in a single C source file.
Which one really depends on what is the variable for, and what uses it.
This is similar to C++, where common vars weren't supported (in standard C
they aren't either), except that in C++17 and later there are inline
variables, so also in C++ if you have (not in template) static data member
declared in some header, you need to provide a definition in a single source