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Use gcov version that matches GNU compiler. #109

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Use gcov version that matches GNU compiler. #109

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17 changes: 15 additions & 2 deletions CodeCoverage.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -90,6 +90,9 @@
# 2026-01-20, Michał Sawicz
# - add `-fprofile-update=atomic` flag, if supported, for concurrent test runs
#
# 2026-03-25, pcb2gcode
# - pick gcov matching g++ (e.g. gcov-10 for g++-10) so lcov agrees with .gcno version
#
# USAGE:
#
# 1. Copy this file into your cmake modules path.
Expand Down Expand Up @@ -142,8 +145,18 @@ include(CMakeParseArguments)

option(CODE_COVERAGE_VERBOSE "Verbose information" FALSE)

# Check prereqs
find_program( GCOV_PATH NAMES gcov )
# Check prereqs — gcov major must match the compiler that emitted .gcno (e.g. g++-10 → gcov-10).
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
get_filename_component(_pcb2gcode_gxx_basename "${CMAKE_CXX_COMPILER}" NAME_WE)
if(_pcb2gcode_gxx_basename MATCHES "^g\\+\\+")
string(REPLACE "g++" "gcov" _pcb2gcode_gcov_name "${_pcb2gcode_gxx_basename}")
find_program(GCOV_PATH NAMES "${_pcb2gcode_gcov_name}" gcov)
else()
find_program(GCOV_PATH NAMES gcov)
endif()
else()
find_program(GCOV_PATH NAMES gcov)
endif()
find_program( LCOV_PATH NAMES lcov lcov.bat lcov.exe lcov.perl )
find_program( FASTCOV_PATH NAMES fastcov fastcov.py )
find_program( GENHTML_PATH NAMES genhtml genhtml.perl genhtml.bat )
Expand Down