src/third_party/tcmalloc/vendor/m4/program_invocation_name.m4

   1 # We need to be careful to avoid having the reference to
   2 # program_invocation_name optimized out.  We do that by
   3 # returning the value.
   4
   5 AC_DEFUN([AC_PROGRAM_INVOCATION_NAME],
   6   [AC_CACHE_CHECK(
   7     for program_invocation_name,
   8     ac_cv_have_program_invocation_name,
   9     AC_TRY_LINK([extern char* program_invocation_name;],
  10                 [return *program_invocation_name;],
  11                 [ac_cv_have_program_invocation_name=yes],
  12                 [ac_cv_have_program_invocation_name=no])
  13    )
  14    if test "$ac_cv_have_program_invocation_name" = "yes"; then
  15      AC_DEFINE(HAVE_PROGRAM_INVOCATION_NAME, 1,
  16                [define if libc has program_invocation_name])
  17    fi
  18    ])
  19