m4/pdns_enable_coverage.m4

   1 AC_DEFUN([PDNS_ENABLE_COVERAGE], [
   2   AC_MSG_CHECKING([whether to enable code coverage])
   3   AC_ARG_ENABLE([coverage],
   4     AS_HELP_STRING([--enable-coverage],
   5       [enable code coverage @<:@default=no@:>@]),
   6     [enable_coverage=$enableval],
   7     [enable_coverage=no]
   8   )
   9   AC_MSG_RESULT([$enable_coverage])
  10
  11   AS_IF([test "x$enable_coverage" = "xclang"], [
  12     dnl let's see if the clang++ specific format is supported,
  13     dnl as it has a much lower overhead and is more accurate,
  14     dnl see https://clang.llvm.org/docs/SourceBasedCodeCoverage.html
  15     gl_COMPILER_OPTION_IF([-fprofile-instr-generate -fcoverage-mapping], [
  16       CFLAGS="$CFLAGS -DCOVERAGE -DCLANG_COVERAGE -fprofile-instr-generate -fcoverage-mapping"
  17       CXXFLAGS="$CXXFLAGS -DCOVERAGE -DCLANG_COVERAGE -fprofile-instr-generate -fcoverage-mapping"
  18     ], [
  19       AC_MSG_ERROR([$CXX does not support gathering coverage data in the clang format])
  20     ])
  21    ])
  22
  23   AS_IF([test "x$enable_coverage" = "xyes"], [
  24     gl_COMPILER_OPTION_IF([-fprofile-arcs -ftest-coverage], [
  25       CFLAGS="$CFLAGS -DCOVERAGE --coverage"
  26       CXXFLAGS="$CXXFLAGS -DCOVERAGE --coverage"
  27       LDFLAGS="$LDFLAGS --coverage"
  28     ], [
  29       AC_MSG_ERROR([$CXX does not support gathering coverage data])
  30     ])
  31   ])
  32 ])