From 38f5a0ba1768469f848eb88b8d634e40e6e63dbb Mon Sep 17 00:00:00 2001
From: Tor Egge <Tor.Egge@broadpark.no>
Date: Tue, 18 Aug 2020 12:07:55 +0200
Subject: Port to Debian 10.

---
 build_settings.cmake                                             | 8 +++++++-
 default_build_settings.cmake                                     | 7 +++++++
 .../storage/persistence/filestorage/filestorhandlerimpl.cpp      | 2 ++
 vespalib/src/vespa/vespalib/testkit/test_master.hpp              | 9 +++++++++
 4 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/build_settings.cmake b/build_settings.cmake
index d7dd26f5ee7..6f6df3de883 100644
--- a/build_settings.cmake
+++ b/build_settings.cmake
@@ -66,8 +66,14 @@ else()
   set(VESPA_STDCXX_FS_LIB "stdc++fs")
 endif()
 
+if(VESPA_OS_DISTRO_COMBINED STREQUAL "debian 10")
+  set(VESPA_XXHASH_DEFINE "-DXXH_NO_INLINE_ALL")
+else()
+  set(VESPA_XXHASH_DEFINE "-DXXH_INLINE_ALL")
+endif()
+
 # C and C++ compiler flags
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g -O3 -fno-omit-frame-pointer ${C_WARN_OPTS} -fPIC ${VESPA_CXX_ABI_FLAGS} -DXXH_INLINE_ALL -DBOOST_DISABLE_ASSERTS ${VESPA_CPU_ARCH_FLAGS} ${EXTRA_C_FLAGS}")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g -O3 -fno-omit-frame-pointer ${C_WARN_OPTS} -fPIC ${VESPA_CXX_ABI_FLAGS} ${VESPA_XXHASH_DEFINE} -DBOOST_DISABLE_ASSERTS ${VESPA_CPU_ARCH_FLAGS} ${EXTRA_C_FLAGS}")
 # AddressSanitizer/ThreadSanitizer work for both GCC and Clang
 if (VESPA_USE_SANITIZER)
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=${VESPA_USE_SANITIZER}")
diff --git a/default_build_settings.cmake b/default_build_settings.cmake
index 69a69dc1860..07a70c38d71 100644
--- a/default_build_settings.cmake
+++ b/default_build_settings.cmake
@@ -96,6 +96,11 @@ function(setup_vespa_default_build_settings_ubuntu_20_04)
   set(DEFAULT_VESPA_LLVM_VERSION "10" PARENT_SCOPE)
 endfunction()
 
+function(setup_vespa_default_build_settings_debian_10)
+  message("-- Setting up default build settings for debian 10")
+  set(DEFAULT_VESPA_LLVM_VERSION "7" PARENT_SCOPE)
+endfunction()
+
 function(vespa_use_default_vespa_unprivileged)
   if(NOT DEFINED VESPA_UNPRIVILEGED)
     message("-- Setting VESPA_UNPRIVILEGED to yes")
@@ -185,6 +190,8 @@ function(vespa_use_default_build_settings)
     setup_vespa_default_build_settings_ubuntu_19_10()
   elseif(VESPA_OS_DISTRO_COMBINED STREQUAL "ubuntu 20.04")
     setup_vespa_default_build_settings_ubuntu_20_04()
+  elseif(VESPA_OS_DISTRO_COMBINED STREQUAL "debian 10")
+    setup_vespa_default_build_settings_debian_10()
   else()
     message(FATAL_ERROR "-- Unkonwn vespa build platform ${VESPA_OS_DISTRO_COMBINED}")
   endif()
diff --git a/storage/src/vespa/storage/persistence/filestorage/filestorhandlerimpl.cpp b/storage/src/vespa/storage/persistence/filestorage/filestorhandlerimpl.cpp
index f536def28a0..a711b29f7a4 100644
--- a/storage/src/vespa/storage/persistence/filestorage/filestorhandlerimpl.cpp
+++ b/storage/src/vespa/storage/persistence/filestorage/filestorhandlerimpl.cpp
@@ -14,9 +14,11 @@
 #include <vespa/storageapi/message/stat.h>
 #include <vespa/vespalib/stllike/hash_map.hpp>
 #include <vespa/vespalib/util/exceptions.h>
+#ifndef XXH_NO_INLINE_ALL
 #ifndef XXH_INLINE_ALL
 #  define XXH_INLINE_ALL // Let XXH64 be inlined for fixed hash size (bucket ID)
 #endif
+#endif
 #include <xxhash.h>
 
 #include <vespa/log/log.h>
diff --git a/vespalib/src/vespa/vespalib/testkit/test_master.hpp b/vespalib/src/vespa/vespalib/testkit/test_master.hpp
index fc163c8d14e..8a5f7eb337b 100644
--- a/vespalib/src/vespa/vespalib/testkit/test_master.hpp
+++ b/vespalib/src/vespa/vespalib/testkit/test_master.hpp
@@ -4,6 +4,15 @@
 
 namespace vespalib {
 
+#if !defined(__clang__) && defined(__GNUC__) &&  __GNUC__ < 9
+// cf. https://cplusplus.github.io/LWG/issue2221
+template<class charT, class traits>
+std::basic_ostream<charT, traits>& operator<<(std::basic_ostream<charT, traits>& os, nullptr_t)
+{
+  return os << (void*) nullptr;
+}
+#endif
+
 template<class A, class B, class OP>
 bool
 TestMaster::compare(const char *file, uint32_t line,
-- 
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