sqlite-with-gcov
SQLite with gcov Code Coverage
This skill provides guidance for compiling SQLite or similar C/C++ projects with gcov instrumentation for code coverage analysis.
Core Concepts
How gcov Works
gcov generates two types of files:
.gcnofiles: Generated at compile time, contain control flow graph information.gcdafiles: Generated at runtime, contain execution counts
Critical understanding: gcov embeds absolute paths at compile time. The .gcda files are written to paths based on where the source was compiled, NOT where the binary is installed or executed from.
Path Mechanics
When compiling with -fprofile-arcs -ftest-coverage (or --coverage):
- The compiler records the absolute path of each source file
- At runtime,
.gcdafiles are written relative to these embedded paths
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