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| 1 | +# This file is part of CMake-codecov. |
| 2 | +# |
| 3 | +# Copyright (c) |
| 4 | +# 2015-2017 RWTH Aachen University, Federal Republic of Germany |
| 5 | +# |
| 6 | +# See the LICENSE file in the package base directory for details |
| 7 | +# |
| 8 | +# Written by Alexander Haase, alexander.haase@rwth-aachen.de |
| 9 | +# |
| 10 | + |
| 11 | + |
| 12 | +# include required Modules |
| 13 | +include(FindPackageHandleStandardArgs) |
| 14 | + |
| 15 | + |
| 16 | +# Search for gcov binary. |
| 17 | +set(CMAKE_REQUIRED_QUIET_SAVE ${CMAKE_REQUIRED_QUIET}) |
| 18 | +set(CMAKE_REQUIRED_QUIET ${codecov_FIND_QUIETLY}) |
| 19 | + |
| 20 | +get_property(ENABLED_LANGUAGES GLOBAL PROPERTY ENABLED_LANGUAGES) |
| 21 | +foreach (LANG ${ENABLED_LANGUAGES}) |
| 22 | + # Gcov evaluation is dependend on the used compiler. Check gcov support for |
| 23 | + # each compiler that is used. If gcov binary was already found for this |
| 24 | + # compiler, do not try to find it again. |
| 25 | + if (NOT GCOV_${CMAKE_${LANG}_COMPILER_ID}_BIN) |
| 26 | + get_filename_component(COMPILER_PATH "${CMAKE_${LANG}_COMPILER}" PATH) |
| 27 | + |
| 28 | + if ("${CMAKE_${LANG}_COMPILER_ID}" STREQUAL "GNU") |
| 29 | + # Some distributions like OSX (homebrew) ship gcov with the compiler |
| 30 | + # version appended as gcov-x. To find this binary we'll build the |
| 31 | + # suggested binary name with the compiler version. |
| 32 | + string(REGEX MATCH "^[0-9]+" GCC_VERSION |
| 33 | + "${CMAKE_${LANG}_COMPILER_VERSION}") |
| 34 | + |
| 35 | + find_program(GCOV_BIN NAMES gcov-${GCC_VERSION} gcov |
| 36 | + HINTS ${COMPILER_PATH}) |
| 37 | + |
| 38 | + elseif ("${CMAKE_${LANG}_COMPILER_ID}" STREQUAL "Clang") |
| 39 | + # Some distributions like Debian ship llvm-cov with the compiler |
| 40 | + # version appended as llvm-cov-x.y. To find this binary we'll build |
| 41 | + # the suggested binary name with the compiler version. |
| 42 | + string(REGEX MATCH "^[0-9]+.[0-9]+" LLVM_VERSION |
| 43 | + "${CMAKE_${LANG}_COMPILER_VERSION}") |
| 44 | + |
| 45 | + # llvm-cov prior version 3.5 seems to be not working with coverage |
| 46 | + # evaluation tools, but these versions are compatible with the gcc |
| 47 | + # gcov tool. |
| 48 | + if(LLVM_VERSION VERSION_GREATER 3.4) |
| 49 | + find_program(LLVM_COV_BIN NAMES "llvm-cov-${LLVM_VERSION}" |
| 50 | + "llvm-cov" HINTS ${COMPILER_PATH}) |
| 51 | + mark_as_advanced(LLVM_COV_BIN) |
| 52 | + |
| 53 | + if (LLVM_COV_BIN) |
| 54 | + find_program(LLVM_COV_WRAPPER "llvm-cov-wrapper" PATHS |
| 55 | + ${CMAKE_MODULE_PATH}) |
| 56 | + if (LLVM_COV_WRAPPER) |
| 57 | + set(GCOV_BIN "${LLVM_COV_WRAPPER}" CACHE FILEPATH "") |
| 58 | + |
| 59 | + # set additional parameters |
| 60 | + set(GCOV_${CMAKE_${LANG}_COMPILER_ID}_ENV |
| 61 | + "LLVM_COV_BIN=${LLVM_COV_BIN}" CACHE STRING |
| 62 | + "Environment variables for llvm-cov-wrapper.") |
| 63 | + mark_as_advanced(GCOV_${CMAKE_${LANG}_COMPILER_ID}_ENV) |
| 64 | + endif () |
| 65 | + endif () |
| 66 | + endif () |
| 67 | + |
| 68 | + if (NOT GCOV_BIN) |
| 69 | + # Fall back to gcov binary if llvm-cov was not found or is |
| 70 | + # incompatible. This is the default on OSX, but may crash on |
| 71 | + # recent Linux versions. |
| 72 | + find_program(GCOV_BIN gcov HINTS ${COMPILER_PATH}) |
| 73 | + endif () |
| 74 | + endif () |
| 75 | + |
| 76 | + |
| 77 | + if (GCOV_BIN) |
| 78 | + set(GCOV_${CMAKE_${LANG}_COMPILER_ID}_BIN "${GCOV_BIN}" CACHE STRING |
| 79 | + "${LANG} gcov binary.") |
| 80 | + |
| 81 | + if (NOT CMAKE_REQUIRED_QUIET) |
| 82 | + message("-- Found gcov evaluation for " |
| 83 | + "${CMAKE_${LANG}_COMPILER_ID}: ${GCOV_BIN}") |
| 84 | + endif() |
| 85 | + |
| 86 | + unset(GCOV_BIN CACHE) |
| 87 | + endif () |
| 88 | + endif () |
| 89 | +endforeach () |
| 90 | + |
| 91 | + |
| 92 | + |
| 93 | + |
| 94 | +# Add a new global target for all gcov targets. This target could be used to |
| 95 | +# generate the gcov files for the whole project instead of calling <TARGET>-gcov |
| 96 | +# for each target. |
| 97 | +if (NOT TARGET gcov) |
| 98 | + add_custom_target(gcov) |
| 99 | +endif (NOT TARGET gcov) |
| 100 | + |
| 101 | + |
| 102 | + |
| 103 | +# This function will add gcov evaluation for target <TNAME>. Only sources of |
| 104 | +# this target will be evaluated and no dependencies will be added. It will call |
| 105 | +# Gcov on any source file of <TNAME> once and store the gcov file in the same |
| 106 | +# directory. |
| 107 | +function (add_gcov_target TNAME) |
| 108 | + set(TDIR ${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/${TNAME}.dir) |
| 109 | + |
| 110 | + # We don't have to check, if the target has support for coverage, thus this |
| 111 | + # will be checked by add_coverage_target in Findcoverage.cmake. Instead we |
| 112 | + # have to determine which gcov binary to use. |
| 113 | + get_target_property(TSOURCES ${TNAME} SOURCES) |
| 114 | + set(SOURCES "") |
| 115 | + set(TCOMPILER "") |
| 116 | + foreach (FILE ${TSOURCES}) |
| 117 | + codecov_path_of_source(${FILE} FILE) |
| 118 | + if (NOT "${FILE}" STREQUAL "") |
| 119 | + codecov_lang_of_source(${FILE} LANG) |
| 120 | + if (NOT "${LANG}" STREQUAL "") |
| 121 | + list(APPEND SOURCES "${FILE}") |
| 122 | + set(TCOMPILER ${CMAKE_${LANG}_COMPILER_ID}) |
| 123 | + endif () |
| 124 | + endif () |
| 125 | + endforeach () |
| 126 | + |
| 127 | + # If no gcov binary was found, coverage data can't be evaluated. |
| 128 | + if (NOT GCOV_${TCOMPILER}_BIN) |
| 129 | + message(WARNING "No coverage evaluation binary found for ${TCOMPILER}.") |
| 130 | + return() |
| 131 | + endif () |
| 132 | + |
| 133 | + set(GCOV_BIN "${GCOV_${TCOMPILER}_BIN}") |
| 134 | + set(GCOV_ENV "${GCOV_${TCOMPILER}_ENV}") |
| 135 | + |
| 136 | + |
| 137 | + set(BUFFER "") |
| 138 | + foreach(FILE ${SOURCES}) |
| 139 | + get_filename_component(FILE_PATH "${TDIR}/${FILE}" PATH) |
| 140 | + |
| 141 | + # call gcov |
| 142 | + add_custom_command(OUTPUT ${TDIR}/${FILE}.gcov |
| 143 | + COMMAND ${GCOV_ENV} ${GCOV_BIN} ${TDIR}/${FILE}.gcno > /dev/null |
| 144 | + DEPENDS ${TNAME} ${TDIR}/${FILE}.gcno |
| 145 | + WORKING_DIRECTORY ${FILE_PATH} |
| 146 | + ) |
| 147 | + |
| 148 | + list(APPEND BUFFER ${TDIR}/${FILE}.gcov) |
| 149 | + endforeach() |
| 150 | + |
| 151 | + |
| 152 | + # add target for gcov evaluation of <TNAME> |
| 153 | + add_custom_target(${TNAME}-gcov DEPENDS ${BUFFER}) |
| 154 | + |
| 155 | + # add evaluation target to the global gcov target. |
| 156 | + add_dependencies(gcov ${TNAME}-gcov) |
| 157 | +endfunction (add_gcov_target) |
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