1 files changed, 97 insertions, 0 deletions

diff --git a/cmake/scripts/linux/CodeCoverage.cmake b/cmake/scripts/linux/CodeCoverage.cmake
new file mode 100644
index 0000000..f0a36fc
--- /dev/null
+++ b/cmake/scripts/linux/CodeCoverage.cmake
@@ -0,0 +1,97 @@
+# - CodeCoverage
+# Generate code coverage reports with LCOV and GCovr.
+#
+# Configuration:
+#  COVERAGE_SOURCE_DIR      - Source root directory (default ${CMAKE_SOURCE_DIR}).
+#  COVERAGE_BINARY_DIR      - Directory where the coverage reports (and intermediate files)
+#                             are generated to.
+#  COVERAGE_EXCLUDES        - List of exclude patterns (for example '*/tests/*').
+#
+# The following targets will be generated:
+#  coverage                 - Builds an html report. Requires LCOV.
+#  coverage_xml             - Builds an xml report (in Cobertura format for Jenkins).
+#                             Requires Gcovr.
+#
+# Inspired by https://github.com/bilke/cmake-modules/blob/master/CodeCoverage.cmake
+
+# Compiler and linker setup
+set(CMAKE_C_FLAGS_COVERAGE "-g -O0 --coverage" CACHE STRING
+  "Flags used by the C compiler during coverage builds." FORCE)
+set(CMAKE_CXX_FLAGS_COVERAGE "-g -O0 --coverage" CACHE STRING
+  "Flags used by the C++ compiler during coverage builds." FORCE)
+set(CMAKE_EXE_LINKER_FLAGS_COVERAGE "--coverage" CACHE STRING
+  "Flags used for linking binaries during coverage builds." FORCE)
+set(CMAKE_SHARED_LINKER_FLAGS_COVERAGE "--coverage" CACHE STRING
+  "Flags used by the shared libraries linker during coverage builds." FORCE)
+mark_as_advanced(
+  CMAKE_C_FLAGS_COVERAGE CMAKE_CXX_FLAGS_COVERAGE CMAKE_EXE_LINKER_FLAGS_COVERAGE
+  CMAKE_SHARED_LINKER_FLAGS_COVERAGE CMAKE_STATIC_LINKER_FLAGS_COVERAGE
+)
+
+find_program(LCOV_EXECUTABLE lcov)
+find_program(GENINFO_EXECUTABLE geninfo)
+find_program(GENHTML_EXECUTABLE genhtml)
+find_program(GCOVR_EXECUTABLE gcovr)
+mark_as_advanced(LCOV_EXECUTABLE GENINFO_EXECUTABLE GENHTML_EXECUTABLE GCOVR_EXECUTABLE)
+
+# Default options
+if(NOT COVERAGE_SOURCE_DIR)
+  set(COVERAGE_SOURCE_DIR ${CMAKE_SOURCE_DIR})
+endif()
+if(NOT COVERAGE_BINARY_DIR)
+  set(COVERAGE_BINARY_DIR ${CMAKE_BINARY_DIR}/coverage)
+endif()
+if(NOT COVERAGE_EXCLUDES)
+  set(COVERAGE_EXCLUDES)
+endif()
+
+# Allow variables in COVERAGE_DEPENDS that are not evaluated before this file is included.
+string(CONFIGURE "${COVERAGE_DEPENDS}" COVERAGE_DEPENDS)
+
+# Add coverage target that generates an HTML report using LCOV
+if(LCOV_EXECUTABLE AND GENINFO_EXECUTABLE AND GENHTML_EXECUTABLE)
+  file(MAKE_DIRECTORY ${COVERAGE_BINARY_DIR})
+  add_custom_target(coverage
+    COMMAND ${CMAKE_COMMAND} -E make_directory ${COVERAGE_BINARY_DIR}
+    COMMAND ${LCOV_EXECUTABLE} -z -q -d ${CMAKE_BINARY_DIR}
+    COMMAND ${LCOV_EXECUTABLE} -c -q -i -d ${CMAKE_BINARY_DIR} -b ${COVERAGE_SOURCE_DIR}
+                               -o ${COVERAGE_BINARY_DIR}/${PROJECT_NAME}.coverage_base.info
+    COMMAND ${CMAKE_COMMAND} --build ${CMAKE_BINARY_DIR} --target test || true
+    COMMAND ${LCOV_EXECUTABLE} -c -q -d ${CMAKE_BINARY_DIR} -b ${COVERAGE_SOURCE_DIR}
+                               -o ${COVERAGE_BINARY_DIR}/${PROJECT_NAME}.coverage_test.info
+    COMMAND ${LCOV_EXECUTABLE} -a ${COVERAGE_BINARY_DIR}/${PROJECT_NAME}.coverage_base.info
+                               -a ${COVERAGE_BINARY_DIR}/${PROJECT_NAME}.coverage_test.info
+                               -o ${COVERAGE_BINARY_DIR}/${PROJECT_NAME}.coverage.info -q
+    COMMAND ${LCOV_EXECUTABLE} -q -r ${COVERAGE_BINARY_DIR}/${PROJECT_NAME}.coverage.info
+                               /usr/include/* ${CMAKE_BINARY_DIR}/* ${COVERAGE_EXCLUDES}
+                               -o ${COVERAGE_BINARY_DIR}/${PROJECT_NAME}.coverage.info
+    COMMAND ${GENHTML_EXECUTABLE} ${COVERAGE_BINARY_DIR}/${PROJECT_NAME}.coverage.info
+                               -o ${COVERAGE_BINARY_DIR}/html -s --legend --highlight --demangle-cpp
+    COMMAND ${CMAKE_COMMAND} -E echo "Coverage report: file://${COVERAGE_BINARY_DIR}/html/index.html"
+    WORKING_DIRECTORY ${COVERAGE_BINARY_DIR}
+    VERBATIM
+    DEPENDS ${COVERAGE_DEPENDS}
+    COMMENT "Generate code coverage html report"
+  )
+else()
+  message(WARNING "Target coverage not available (lcov, geninfo and genhtml needed).")
+endif()
+
+# Add coverage target that generates an XML report using Gcovr
+if(GCOVR_EXECUTABLE)
+  file(MAKE_DIRECTORY ${COVERAGE_BINARY_DIR})
+  string(REGEX REPLACE "([^;]+)" "--exclude=\"\\1\"" _gcovr_excludes "${COVERAGE_EXCLUDES}")
+  string(REPLACE "*" ".*" _gcovr_excludes "${_gcovr_excludes}")
+  add_custom_target(coverage_xml
+    COMMAND ${CMAKE_COMMAND} --build ${CMAKE_BINARY_DIR} --target test || true
+    COMMAND ${GCOVR_EXECUTABLE} -x -r ${COVERAGE_SOURCE_DIR} -o ${COVERAGE_BINARY_DIR}/coverage.xml
+                                --object-directory ${CMAKE_BINARY_DIR} ${_gcovr_excludes} ${CMAKE_BINARY_DIR}
+    COMMAND ${CMAKE_COMMAND} -E echo "Coverage report: file://${COVERAGE_BINARY_DIR}/coverage.xml"
+    WORKING_DIRECTORY ${COVERAGE_BINARY_DIR}
+    DEPENDS ${COVERAGE_DEPENDS}
+    COMMENT "Generate code coverage xml report"
+  )
+  unset(_gcovr_excludes)
+else()
+  message(WARNING "Target coverage_xml not available (gcovr needed).")
+endif()