Adapt bin/gen-boost-headers to Clang 5

...since <http://llvm.org/viewvc/llvm-project?view=revision&revision=301647>
"Use the -Wunknown-warning-option group for the 'unknown warning group'
diagnostic in #pragma diagnostic".

* external/boost/include/boost/{locale.hpp,locale/gnu_gettext.hpp} would have
been removed by 'make cmd cmd=bin/gen-boost-headers' as they are still unused
from c25eee44966703cb27d632bccb39b20978341ffd "build boost::locale library",
but there's reportedly a patch in Gerrit to actually use them, so I fixed them
manually for now.

* The deviating comment style is to keep lines no wider than 80 characters.

Change-Id: I64603ae8d8a82781eda46f12c9dd5c68dcf395b9

99 files changed, 99 insertions, 0 deletions

diff --git a/external/boost/include/boost/algorithm/string.hpp b/external/boost/include/boost/algorithm/string.hpp
index 7f44ca663685..e118f01db3f5 100644
--- a/external/boost/include/boost/algorithm/string.hpp
+++ b/external/boost/include/boost/algorithm/string.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/algorithm/string/case_conv.hpp b/external/boost/include/boost/algorithm/string/case_conv.hpp
index e0229b7f623d..bbdb3f9c4ab6 100644
--- a/external/boost/include/boost/algorithm/string/case_conv.hpp
+++ b/external/boost/include/boost/algorithm/string/case_conv.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/algorithm/string/classification.hpp b/external/boost/include/boost/algorithm/string/classification.hpp
index ee6fb5f0b816..88b93cf02e32 100644
--- a/external/boost/include/boost/algorithm/string/classification.hpp
+++ b/external/boost/include/boost/algorithm/string/classification.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/algorithm/string/predicate.hpp b/external/boost/include/boost/algorithm/string/predicate.hpp
index def1d376cab6..c29258fed39e 100644
--- a/external/boost/include/boost/algorithm/string/predicate.hpp
+++ b/external/boost/include/boost/algorithm/string/predicate.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/algorithm/string/split.hpp b/external/boost/include/boost/algorithm/string/split.hpp
index 13bce67e65d0..879e699aa128 100644
--- a/external/boost/include/boost/algorithm/string/split.hpp
+++ b/external/boost/include/boost/algorithm/string/split.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/any.hpp b/external/boost/include/boost/any.hpp
index ea0518b4a616..8c26055de0f9 100644
--- a/external/boost/include/boost/any.hpp
+++ b/external/boost/include/boost/any.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/archive/iterators/base64_from_binary.hpp b/external/boost/include/boost/archive/iterators/base64_from_binary.hpp
index 3f67dbcffb03..8559efad8c6c 100644
--- a/external/boost/include/boost/archive/iterators/base64_from_binary.hpp
+++ b/external/boost/include/boost/archive/iterators/base64_from_binary.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/archive/iterators/binary_from_base64.hpp b/external/boost/include/boost/archive/iterators/binary_from_base64.hpp
index 9565488ec6fe..09da0500d1c4 100644
--- a/external/boost/include/boost/archive/iterators/binary_from_base64.hpp
+++ b/external/boost/include/boost/archive/iterators/binary_from_base64.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/archive/iterators/remove_whitespace.hpp b/external/boost/include/boost/archive/iterators/remove_whitespace.hpp
index 957b8223fdbe..70de33b0afe1 100644
--- a/external/boost/include/boost/archive/iterators/remove_whitespace.hpp
+++ b/external/boost/include/boost/archive/iterators/remove_whitespace.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/archive/iterators/transform_width.hpp b/external/boost/include/boost/archive/iterators/transform_width.hpp
index e3baa9396429..33e6720a17a0 100644
--- a/external/boost/include/boost/archive/iterators/transform_width.hpp
+++ b/external/boost/include/boost/archive/iterators/transform_width.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/asio.hpp b/external/boost/include/boost/asio.hpp
index e3843632c969..3ddb3781ef63 100644
--- a/external/boost/include/boost/asio.hpp
+++ b/external/boost/include/boost/asio.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/assign.hpp b/external/boost/include/boost/assign.hpp
index 4dca6fba6293..16689763699b 100644
--- a/external/boost/include/boost/assign.hpp
+++ b/external/boost/include/boost/assign.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/bind.hpp b/external/boost/include/boost/bind.hpp
index 304d19dd2453..6cb7094503e7 100644
--- a/external/boost/include/boost/bind.hpp
+++ b/external/boost/include/boost/bind.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/cast.hpp b/external/boost/include/boost/cast.hpp
index 82e631fa3d9b..900b30cd816b 100644
--- a/external/boost/include/boost/cast.hpp
+++ b/external/boost/include/boost/cast.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/circular_buffer.hpp b/external/boost/include/boost/circular_buffer.hpp
index ac2f040692fa..cecf72ce015e 100644
--- a/external/boost/include/boost/circular_buffer.hpp
+++ b/external/boost/include/boost/circular_buffer.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/config.hpp b/external/boost/include/boost/config.hpp
index 880e40d98b0c..07765930a0b3 100644
--- a/external/boost/include/boost/config.hpp
+++ b/external/boost/include/boost/config.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/container/deque.hpp b/external/boost/include/boost/container/deque.hpp
index cfcf86b0cb0f..add4c72ff598 100644
--- a/external/boost/include/boost/container/deque.hpp
+++ b/external/boost/include/boost/container/deque.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/cstdint.hpp b/external/boost/include/boost/cstdint.hpp
index bc15138192ec..0aa34f31e4fe 100644
--- a/external/boost/include/boost/cstdint.hpp
+++ b/external/boost/include/boost/cstdint.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/current_function.hpp b/external/boost/include/boost/current_function.hpp
index e73a150a723c..afa354a79d51 100644
--- a/external/boost/include/boost/current_function.hpp
+++ b/external/boost/include/boost/current_function.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/date_time.hpp b/external/boost/include/boost/date_time.hpp
index 239bdc677193..f693c87eb879 100644
--- a/external/boost/include/boost/date_time.hpp
+++ b/external/boost/include/boost/date_time.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/date_time/posix_time/posix_time.hpp b/external/boost/include/boost/date_time/posix_time/posix_time.hpp
index 0d2d980a2db5..73424d3bbd85 100644
--- a/external/boost/include/boost/date_time/posix_time/posix_time.hpp
+++ b/external/boost/include/boost/date_time/posix_time/posix_time.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/enable_shared_from_this.hpp b/external/boost/include/boost/enable_shared_from_this.hpp
index 54aa713c866a..54ded2247778 100644
--- a/external/boost/include/boost/enable_shared_from_this.hpp
+++ b/external/boost/include/boost/enable_shared_from_this.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/filesystem.hpp b/external/boost/include/boost/filesystem.hpp
index f588b5622e9f..4d6bd8da1a75 100644
--- a/external/boost/include/boost/filesystem.hpp
+++ b/external/boost/include/boost/filesystem.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/filesystem/path.hpp b/external/boost/include/boost/filesystem/path.hpp
index 89fa0e7658be..247fc1cdc119 100644
--- a/external/boost/include/boost/filesystem/path.hpp
+++ b/external/boost/include/boost/filesystem/path.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/foreach.hpp b/external/boost/include/boost/foreach.hpp
index 63897c499380..dad9b2b02c63 100644
--- a/external/boost/include/boost/foreach.hpp
+++ b/external/boost/include/boost/foreach.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/format.hpp b/external/boost/include/boost/format.hpp
index c267a54295ff..1b58e327d489 100644
--- a/external/boost/include/boost/format.hpp
+++ b/external/boost/include/boost/format.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/function.hpp b/external/boost/include/boost/function.hpp
index e953251eca68..3d7db100d982 100644
--- a/external/boost/include/boost/function.hpp
+++ b/external/boost/include/boost/function.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/functional/hash.hpp b/external/boost/include/boost/functional/hash.hpp
index ae6a57d94521..f370025662de 100644
--- a/external/boost/include/boost/functional/hash.hpp
+++ b/external/boost/include/boost/functional/hash.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/fusion/adapted/std_pair.hpp b/external/boost/include/boost/fusion/adapted/std_pair.hpp
index 9de388b55895..512767f85a22 100644
--- a/external/boost/include/boost/fusion/adapted/std_pair.hpp
+++ b/external/boost/include/boost/fusion/adapted/std_pair.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/fusion/include/adapt_struct.hpp b/external/boost/include/boost/fusion/include/adapt_struct.hpp
index 8f0915fbe4c2..3080d6dfd658 100644
--- a/external/boost/include/boost/fusion/include/adapt_struct.hpp
+++ b/external/boost/include/boost/fusion/include/adapt_struct.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/intrusive/circular_list_algorithms.hpp b/external/boost/include/boost/intrusive/circular_list_algorithms.hpp
index 9c2292374f58..a3fc510e071a 100644
--- a/external/boost/include/boost/intrusive/circular_list_algorithms.hpp
+++ b/external/boost/include/boost/intrusive/circular_list_algorithms.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/intrusive_ptr.hpp b/external/boost/include/boost/intrusive_ptr.hpp
index a5103ea47e4f..94cb4c4d8878 100644
--- a/external/boost/include/boost/intrusive_ptr.hpp
+++ b/external/boost/include/boost/intrusive_ptr.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/io/ios_state.hpp b/external/boost/include/boost/io/ios_state.hpp
index bb973c4bc794..ba8f9cb609c7 100644
--- a/external/boost/include/boost/io/ios_state.hpp
+++ b/external/boost/include/boost/io/ios_state.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/iostreams/device/file_descriptor.hpp b/external/boost/include/boost/iostreams/device/file_descriptor.hpp
index 9ca6303af77a..f024baa320d3 100644
--- a/external/boost/include/boost/iostreams/device/file_descriptor.hpp
+++ b/external/boost/include/boost/iostreams/device/file_descriptor.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/iostreams/filter/gzip.hpp b/external/boost/include/boost/iostreams/filter/gzip.hpp
index ee63702ed46a..e1da5558c0a3 100644
--- a/external/boost/include/boost/iostreams/filter/gzip.hpp
+++ b/external/boost/include/boost/iostreams/filter/gzip.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/iostreams/filtering_stream.hpp b/external/boost/include/boost/iostreams/filtering_stream.hpp
index 255da38e3f46..a0d2aab2d70e 100644
--- a/external/boost/include/boost/iostreams/filtering_stream.hpp
+++ b/external/boost/include/boost/iostreams/filtering_stream.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/iterator/iterator_facade.hpp b/external/boost/include/boost/iterator/iterator_facade.hpp
index 79192b8991b1..aca8f0dc5f5b 100644
--- a/external/boost/include/boost/iterator/iterator_facade.hpp
+++ b/external/boost/include/boost/iterator/iterator_facade.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/lexical_cast.hpp b/external/boost/include/boost/lexical_cast.hpp
index 50ec97a65fb0..e61a5a038887 100644
--- a/external/boost/include/boost/lexical_cast.hpp
+++ b/external/boost/include/boost/lexical_cast.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/locale.hpp b/external/boost/include/boost/locale.hpp
index 297ed0ea135a..fe5892cc0368 100644
--- a/external/boost/include/boost/locale.hpp
+++ b/external/boost/include/boost/locale.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/locale/gnu_gettext.hpp b/external/boost/include/boost/locale/gnu_gettext.hpp
index 810278a1aab5..aa9a19872436 100644
--- a/external/boost/include/boost/locale/gnu_gettext.hpp
+++ b/external/boost/include/boost/locale/gnu_gettext.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/logic/tribool.hpp b/external/boost/include/boost/logic/tribool.hpp
index a313aa864689..ebbb90204b8b 100644
--- a/external/boost/include/boost/logic/tribool.hpp
+++ b/external/boost/include/boost/logic/tribool.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/make_shared.hpp b/external/boost/include/boost/make_shared.hpp
index ebe1c5650c11..cdbceb5d5ba9 100644
--- a/external/boost/include/boost/make_shared.hpp
+++ b/external/boost/include/boost/make_shared.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/math/constants/constants.hpp b/external/boost/include/boost/math/constants/constants.hpp
index 50ceb2e0c59e..082d0bb36e13 100644
--- a/external/boost/include/boost/math/constants/constants.hpp
+++ b/external/boost/include/boost/math/constants/constants.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/math/special_functions/expm1.hpp b/external/boost/include/boost/math/special_functions/expm1.hpp
index 4be9fef32d44..3ff757725828 100644
--- a/external/boost/include/boost/math/special_functions/expm1.hpp
+++ b/external/boost/include/boost/math/special_functions/expm1.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/math/special_functions/log1p.hpp b/external/boost/include/boost/math/special_functions/log1p.hpp
index d0edd4605ee2..5c84e4d4a985 100644
--- a/external/boost/include/boost/math/special_functions/log1p.hpp
+++ b/external/boost/include/boost/math/special_functions/log1p.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/math/special_functions/sinc.hpp b/external/boost/include/boost/math/special_functions/sinc.hpp
index 5251bff5ef5a..86ca477309b0 100644
--- a/external/boost/include/boost/math/special_functions/sinc.hpp
+++ b/external/boost/include/boost/math/special_functions/sinc.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/multi_array.hpp b/external/boost/include/boost/multi_array.hpp
index 7044700fcbbd..0d5a6fee7cd1 100644
--- a/external/boost/include/boost/multi_array.hpp
+++ b/external/boost/include/boost/multi_array.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/multi_index/composite_key.hpp b/external/boost/include/boost/multi_index/composite_key.hpp
index a8f96bff3753..79982a8d96a5 100644
--- a/external/boost/include/boost/multi_index/composite_key.hpp
+++ b/external/boost/include/boost/multi_index/composite_key.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/multi_index/identity.hpp b/external/boost/include/boost/multi_index/identity.hpp
index 2fe2bd2f611e..6b6c14d2f4b9 100644
--- a/external/boost/include/boost/multi_index/identity.hpp
+++ b/external/boost/include/boost/multi_index/identity.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/multi_index/mem_fun.hpp b/external/boost/include/boost/multi_index/mem_fun.hpp
index 4044920ce8b0..6a7fed557102 100644
--- a/external/boost/include/boost/multi_index/mem_fun.hpp
+++ b/external/boost/include/boost/multi_index/mem_fun.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/multi_index/ordered_index.hpp b/external/boost/include/boost/multi_index/ordered_index.hpp
index a5c72c28e27b..30c725c1a725 100644
--- a/external/boost/include/boost/multi_index/ordered_index.hpp
+++ b/external/boost/include/boost/multi_index/ordered_index.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/multi_index/random_access_index.hpp b/external/boost/include/boost/multi_index/random_access_index.hpp
index a97a3bcc0aa8..f2841932d472 100644
--- a/external/boost/include/boost/multi_index/random_access_index.hpp
+++ b/external/boost/include/boost/multi_index/random_access_index.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/multi_index_container.hpp b/external/boost/include/boost/multi_index_container.hpp
index 87ba04be192d..4f835f352e29 100644
--- a/external/boost/include/boost/multi_index_container.hpp
+++ b/external/boost/include/boost/multi_index_container.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/noncopyable.hpp b/external/boost/include/boost/noncopyable.hpp
index 7406fcce5a33..14b9f06b6c36 100644
--- a/external/boost/include/boost/noncopyable.hpp
+++ b/external/boost/include/boost/noncopyable.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/none.hpp b/external/boost/include/boost/none.hpp
index 279a1792d5ba..2f390d8b8ea9 100644
--- a/external/boost/include/boost/none.hpp
+++ b/external/boost/include/boost/none.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/numeric/conversion/cast.hpp b/external/boost/include/boost/numeric/conversion/cast.hpp
index 6a543e13c7c5..e5f4f6a2e585 100644
--- a/external/boost/include/boost/numeric/conversion/cast.hpp
+++ b/external/boost/include/boost/numeric/conversion/cast.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/operators.hpp b/external/boost/include/boost/operators.hpp
index 946e890903a5..cc0ed139aa6c 100644
--- a/external/boost/include/boost/operators.hpp
+++ b/external/boost/include/boost/operators.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/optional.hpp b/external/boost/include/boost/optional.hpp
index dd2a61f29f0f..e7ea397edb29 100644
--- a/external/boost/include/boost/optional.hpp
+++ b/external/boost/include/boost/optional.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/optional/optional.hpp b/external/boost/include/boost/optional/optional.hpp
index b5e6b31012db..80d5a8e4a321 100644
--- a/external/boost/include/boost/optional/optional.hpp
+++ b/external/boost/include/boost/optional/optional.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/preprocessor/stringize.hpp b/external/boost/include/boost/preprocessor/stringize.hpp
index aea886c4729d..ab84e47720d4 100644
--- a/external/boost/include/boost/preprocessor/stringize.hpp
+++ b/external/boost/include/boost/preprocessor/stringize.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/program_options.hpp b/external/boost/include/boost/program_options.hpp
index e5e837dbd80a..466c014c2f44 100644
--- a/external/boost/include/boost/program_options.hpp
+++ b/external/boost/include/boost/program_options.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/property_tree/json_parser.hpp b/external/boost/include/boost/property_tree/json_parser.hpp
index a1e0ab9a908d..7951ad351cb7 100644
--- a/external/boost/include/boost/property_tree/json_parser.hpp
+++ b/external/boost/include/boost/property_tree/json_parser.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/property_tree/ptree.hpp b/external/boost/include/boost/property_tree/ptree.hpp
index 61d7564ae38e..47eadc3c59c3 100644
--- a/external/boost/include/boost/property_tree/ptree.hpp
+++ b/external/boost/include/boost/property_tree/ptree.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/ptr_container/ptr_vector.hpp b/external/boost/include/boost/ptr_container/ptr_vector.hpp
index cfb19cb6e0bb..2b807cebccec 100644
--- a/external/boost/include/boost/ptr_container/ptr_vector.hpp
+++ b/external/boost/include/boost/ptr_container/ptr_vector.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/range/adaptor/reversed.hpp b/external/boost/include/boost/range/adaptor/reversed.hpp
index 09a4e6793c34..2ac5455cfc09 100644
--- a/external/boost/include/boost/range/adaptor/reversed.hpp
+++ b/external/boost/include/boost/range/adaptor/reversed.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/range/iterator_range.hpp b/external/boost/include/boost/range/iterator_range.hpp
index f7e6b8515f1b..d8d9311ca471 100644
--- a/external/boost/include/boost/range/iterator_range.hpp
+++ b/external/boost/include/boost/range/iterator_range.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/rational.hpp b/external/boost/include/boost/rational.hpp
index 4e25e55a5bde..a3a93d20045b 100644
--- a/external/boost/include/boost/rational.hpp
+++ b/external/boost/include/boost/rational.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/ref.hpp b/external/boost/include/boost/ref.hpp
index d7bd9f0f8ced..f986e8e059f3 100644
--- a/external/boost/include/boost/ref.hpp
+++ b/external/boost/include/boost/ref.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/scoped_array.hpp b/external/boost/include/boost/scoped_array.hpp
index ee8f53e3ce7e..e52ae1b2d706 100644
--- a/external/boost/include/boost/scoped_array.hpp
+++ b/external/boost/include/boost/scoped_array.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/scoped_ptr.hpp b/external/boost/include/boost/scoped_ptr.hpp
index f46b8ca5d876..5584e4f76252 100644
--- a/external/boost/include/boost/scoped_ptr.hpp
+++ b/external/boost/include/boost/scoped_ptr.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/shared_array.hpp b/external/boost/include/boost/shared_array.hpp
index 8645042a17c8..bf76c566b1b1 100644
--- a/external/boost/include/boost/shared_array.hpp
+++ b/external/boost/include/boost/shared_array.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/shared_ptr.hpp b/external/boost/include/boost/shared_ptr.hpp
index be612c7e3c2b..27e5171d5c34 100644
--- a/external/boost/include/boost/shared_ptr.hpp
+++ b/external/boost/include/boost/shared_ptr.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/spirit.hpp b/external/boost/include/boost/spirit.hpp
index 0622d8a8fc7e..be1d7e827620 100644
--- a/external/boost/include/boost/spirit.hpp
+++ b/external/boost/include/boost/spirit.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/spirit/include/classic.hpp b/external/boost/include/boost/spirit/include/classic.hpp
index be23d44e5639..4698bd4fc793 100644
--- a/external/boost/include/boost/spirit/include/classic.hpp
+++ b/external/boost/include/boost/spirit/include/classic.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/spirit/include/classic_core.hpp b/external/boost/include/boost/spirit/include/classic_core.hpp
index 53cc556579c6..16dc3ddca323 100644
--- a/external/boost/include/boost/spirit/include/classic_core.hpp
+++ b/external/boost/include/boost/spirit/include/classic_core.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/spirit/include/classic_error_handling.hpp b/external/boost/include/boost/spirit/include/classic_error_handling.hpp
index b802ee0d94db..b1e129a18a5a 100644
--- a/external/boost/include/boost/spirit/include/classic_error_handling.hpp
+++ b/external/boost/include/boost/spirit/include/classic_error_handling.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/spirit/include/classic_file_iterator.hpp b/external/boost/include/boost/spirit/include/classic_file_iterator.hpp
index 23a6d2300a1b..7eb6fe0d9b89 100644
--- a/external/boost/include/boost/spirit/include/classic_file_iterator.hpp
+++ b/external/boost/include/boost/spirit/include/classic_file_iterator.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/spirit/include/classic_utility.hpp b/external/boost/include/boost/spirit/include/classic_utility.hpp
index e1336166b1e7..bcbc73fea44c 100644
--- a/external/boost/include/boost/spirit/include/classic_utility.hpp
+++ b/external/boost/include/boost/spirit/include/classic_utility.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/spirit/include/classic_while.hpp b/external/boost/include/boost/spirit/include/classic_while.hpp
index 245a0a964193..db3207c9428b 100644
--- a/external/boost/include/boost/spirit/include/classic_while.hpp
+++ b/external/boost/include/boost/spirit/include/classic_while.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/spirit/include/phoenix.hpp b/external/boost/include/boost/spirit/include/phoenix.hpp
index 5194af0fb0ca..e08e594aa6aa 100644
--- a/external/boost/include/boost/spirit/include/phoenix.hpp
+++ b/external/boost/include/boost/spirit/include/phoenix.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/spirit/include/qi.hpp b/external/boost/include/boost/spirit/include/qi.hpp
index 38d205454a1d..67aa1f8ffb31 100644
--- a/external/boost/include/boost/spirit/include/qi.hpp
+++ b/external/boost/include/boost/spirit/include/qi.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/spirit/include/qi_attr.hpp b/external/boost/include/boost/spirit/include/qi_attr.hpp
index 18db033bda76..2c71af6588c9 100644
--- a/external/boost/include/boost/spirit/include/qi_attr.hpp
+++ b/external/boost/include/boost/spirit/include/qi_attr.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/spirit/include/qi_lit.hpp b/external/boost/include/boost/spirit/include/qi_lit.hpp
index da35a4f1c161..135b6e0c70d1 100644
--- a/external/boost/include/boost/spirit/include/qi_lit.hpp
+++ b/external/boost/include/boost/spirit/include/qi_lit.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/spirit/include/qi_optional.hpp b/external/boost/include/boost/spirit/include/qi_optional.hpp
index 7500ea74967f..0ff921e60486 100644
--- a/external/boost/include/boost/spirit/include/qi_optional.hpp
+++ b/external/boost/include/boost/spirit/include/qi_optional.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/spirit/include/qi_parse_attr.hpp b/external/boost/include/boost/spirit/include/qi_parse_attr.hpp
index e2852b5e125a..4ba3af6ebd55 100644
--- a/external/boost/include/boost/spirit/include/qi_parse_attr.hpp
+++ b/external/boost/include/boost/spirit/include/qi_parse_attr.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/spirit/include/qi_sequence.hpp b/external/boost/include/boost/spirit/include/qi_sequence.hpp
index 4cc670aa1e02..318867385243 100644
--- a/external/boost/include/boost/spirit/include/qi_sequence.hpp
+++ b/external/boost/include/boost/spirit/include/qi_sequence.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/spirit/include/qi_symbols.hpp b/external/boost/include/boost/spirit/include/qi_symbols.hpp
index 48b1b3bbc393..f8a2aa05991b 100644
--- a/external/boost/include/boost/spirit/include/qi_symbols.hpp
+++ b/external/boost/include/boost/spirit/include/qi_symbols.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/static_assert.hpp b/external/boost/include/boost/static_assert.hpp
index 80c85f130860..44e264483f6f 100644
--- a/external/boost/include/boost/static_assert.hpp
+++ b/external/boost/include/boost/static_assert.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/system/error_code.hpp b/external/boost/include/boost/system/error_code.hpp
index 08598f88290f..952590156914 100644
--- a/external/boost/include/boost/system/error_code.hpp
+++ b/external/boost/include/boost/system/error_code.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/type_index.hpp b/external/boost/include/boost/type_index.hpp
index fe2fd1ffc483..52982e2c2b7b 100644
--- a/external/boost/include/boost/type_index.hpp
+++ b/external/boost/include/boost/type_index.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/unordered_map.hpp b/external/boost/include/boost/unordered_map.hpp
index 96bc353ebe28..3b3c8773e598 100644
--- a/external/boost/include/boost/unordered_map.hpp
+++ b/external/boost/include/boost/unordered_map.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/unordered_set.hpp b/external/boost/include/boost/unordered_set.hpp
index c8775fe3acae..091070717a64 100644
--- a/external/boost/include/boost/unordered_set.hpp
+++ b/external/boost/include/boost/unordered_set.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/uuid/sha1.hpp b/external/boost/include/boost/uuid/sha1.hpp
index e3d8f0c3d12b..d7f8e76731e6 100644
--- a/external/boost/include/boost/uuid/sha1.hpp
+++ b/external/boost/include/boost/uuid/sha1.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/uuid/uuid_generators.hpp b/external/boost/include/boost/uuid/uuid_generators.hpp
index 8d51f4bb552d..e692c6270ccd 100644
--- a/external/boost/include/boost/uuid/uuid_generators.hpp
+++ b/external/boost/include/boost/uuid/uuid_generators.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/uuid/uuid_io.hpp b/external/boost/include/boost/uuid/uuid_io.hpp
index b6e9421f9e94..5f1718f2d94f 100644
--- a/external/boost/include/boost/uuid/uuid_io.hpp
+++ b/external/boost/include/boost/uuid/uuid_io.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/variant.hpp b/external/boost/include/boost/variant.hpp
index c168c79da0d0..dd80d617bd1e 100644
--- a/external/boost/include/boost/variant.hpp
+++ b/external/boost/include/boost/variant.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/variant/recursive_variant.hpp b/external/boost/include/boost/variant/recursive_variant.hpp
index 3b572bc36060..3689e4a397da 100644
--- a/external/boost/include/boost/variant/recursive_variant.hpp
+++ b/external/boost/include/boost/variant/recursive_variant.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/version.hpp b/external/boost/include/boost/version.hpp
index 5196b83e6d95..b41d053cef11 100644
--- a/external/boost/include/boost/version.hpp
+++ b/external/boost/include/boost/version.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"
diff --git a/external/boost/include/boost/weak_ptr.hpp b/external/boost/include/boost/weak_ptr.hpp
index 5dcc7502d9ff..ed41d59fb44f 100644
--- a/external/boost/include/boost/weak_ptr.hpp
+++ b/external/boost/include/boost/weak_ptr.hpp
@@ -3,6 +3,7 @@
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wunknown-pragmas"  /* first! for clang */
 #pragma GCC diagnostic ignored "-Wpragmas"  /* second! for GCC */
+#pragma GCC diagnostic ignored "-Wunknown-warning-option" // third! for Clang 5
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 #pragma GCC diagnostic ignored "-Wextra"
 #pragma GCC diagnostic ignored "-Wignored-qualifiers"