Bug#1143336: meson: FTBFS: Compiler for C supports function attribute error: YES

On 8/2/26 01:36, Santiago Vila wrote:

> Below you will find the last part of the build log (probably the most
> relevant part, but not necessarily). If required, the full build log
> is available here:

That snippet is not related at all. The actual issue is here:

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lcov: ERROR: lcov: ERROR: (deprecated) RC option 'lcov_branch_coverage' 
is deprecated.  Please use 'branch_coverage' instead.
	(use "lcov --ignore-errors deprecated ..." to bypass this error)

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Meson has code since 2023 to make this work:

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if lcov_exe and mesonlib.version_compare(lcov_version, '>=2.0'):
         lcov_exe_rc_branch_coverage = ['--rc', 'branch_coverage=1']
     else:
         lcov_exe_rc_branch_coverage = ['--rc', 'lcov_branch_coverage=1']

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I tested this on the latest Ubuntu and it works exactly as it should. 
The version lcov reports is:

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lcov: LCOV version 2.0-1
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So I guess the question is whether lcov is reporting its version number 
properly or if it has changed its versioning scheme to be incompatible 
with the existing check.