diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 64 |
1 files changed, 38 insertions, 26 deletions
diff --git a/configure.ac b/configure.ac index b5b6893e5..b9b49d276 100644 --- a/configure.ac +++ b/configure.ac @@ -799,27 +799,6 @@ if test "$enable_cloud" != "no" -a "$aclk_ng" != "no"; then AC_MSG_RESULT([yes]) fi - if test "${with_bundled_protobuf}" = "yes"; then - AC_LANG_PUSH([C++]) - CXXFLAGS="${CXXFLAGS} -std=c++11" - - # On some platforms, std::atomic needs a helper library - AC_MSG_CHECKING(whether -latomic is needed for static protobuf) - AC_LINK_IFELSE([AC_LANG_SOURCE([[ - #include <atomic> - #include <cstdint> - std::atomic<std::int64_t> v; - int main() { - return v; - } - ]])], STD_ATOMIC_NEED_LIBATOMIC=no, STD_ATOMIC_NEED_LIBATOMIC=yes) - AC_MSG_RESULT($STD_ATOMIC_NEED_LIBATOMIC) - if test "x$STD_ATOMIC_NEED_LIBATOMIC" = xyes; then - OPTIONAL_ATOMIC_LIBS="-latomic" - fi - AC_SUBST([OPTIONAL_ATOMIC_LIBS]) - AC_LANG_POP([C++]) - fi AC_MSG_CHECKING([ACLK Next Generation can support New Cloud protocol]) AC_MSG_RESULT([${can_build_new_cloud_protocol}]) if test "$new_cloud_protocol" = "yes" -a "$can_build_new_cloud_protocol" != "yes"; then @@ -1655,11 +1634,44 @@ AC_MSG_RESULT([${enable_lto}]) # ----------------------------------------------------------------------------- -AM_CONDITIONAL([ENABLE_CXX_LINKER], [test "${enable_backend_kinesis}" = "yes" \ - -o "${enable_exporting_pubsub}" = "yes" \ - -o "${enable_backend_prometheus_remote_write}" = "yes" \ - -o "${new_cloud_protocol}" = "yes" \ - -o "${build_ml}" = "yes"]) +if test "${enable_backend_kinesis}" = "yes" -o \ + "${enable_exporting_pubsub}" = "yes" -o \ + "${enable_backend_prometheus_remote_write}" = "yes" -o \ + "${new_cloud_protocol}" = "yes" -o \ + "${build_ml}" = "yes"; then + enable_cxx_linker="yes" + + # Try to unconditionally link with -latomic. If the compiler can satisfy + # all the atomic ops with builtins then, the library will be left unused. + # Otherwise, some ops will be covered by the compiler's intrinsics and some + # will be picked up by the linker from -latomic. In the later case, if + # -latomic is not available there will be a build failure, which would + # have happened either way before this change. + AC_LANG_PUSH([C++]) + + AC_MSG_CHECKING(whether we can use -latomic) + OLD_LIBS="${LIBS}" + LIBS="-latomic" + AC_LINK_IFELSE([AC_LANG_SOURCE([[ + #include <atomic> + #include <cstdint> + std::atomic<std::int64_t> v; + int main() { + return v; + } + ]])], CAN_USE_LIBATOMIC=yes, CAN_USE_LIBATOMIC=no) + LIBS="${OLD_LIBS}" + AC_MSG_RESULT($CAN_USE_LIBATOMIC) + + if test "x$CAN_USE_LIBATOMIC" = xyes; then + OPTIONAL_ATOMIC_LIBS="-latomic" + fi + AC_SUBST([OPTIONAL_ATOMIC_LIBS]) + + AC_LANG_POP([C++]) +fi + +AM_CONDITIONAL([ENABLE_CXX_LINKER], [test "${enable_cxx_linker}" = "yes"]) AC_DEFINE_UNQUOTED([NETDATA_USER], ["${with_user}"], [use this user to drop privileged]) |