From 16fbb700ed82cf6d3aad3a9c293b0e8068840b96 Mon Sep 17 00:00:00 2001
From: Roland Reichwein <mail@reichwein.it>
Date: Mon, 27 Dec 2021 12:08:57 +0100
Subject: Fix build on Debian and Ubuntu versions

---
 Makefile             | 12 +++++++++---
 debian/control       |  2 +-
 src/test-unicode.cpp | 22 +++++++++++++++++++---
 3 files changed, 29 insertions(+), 7 deletions(-)

diff --git a/Makefile b/Makefile
index e037bc5..a3962c1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,13 +1,18 @@
 PROJECTNAME=unicode
 VERSION=$(shell dpkg-parsechangelog --show-field Version)
-ifeq ($(shell lsb_release -si),Debian)
+ifeq ($(shell lsb_release -is),Debian)
 ONDEBIAN=yes
+DEBIANVERSION=$(shell lsb_release -rs)
 else
 ONDEBIAN=no
 endif
 
 # On Ubuntu 2104 and 2110, dh_strip / debugedit is broken, therefore different Non-Debian options in the following
-DISTROS=base base-i386 debian10 debian11 ubuntu2004 ubuntu2010 ubuntu2104 ubuntu2110 ubuntu2204
+DISTROS=base base-i386 debian10 debian11 ubuntu2004 ubuntu2104 ubuntu2110 ubuntu2204
+
+ifeq ($(DEBIANVERSION),10)
+CXX=g++-8
+else
 
 ifeq ($(wildcard $(shell which clang++-13)),)
 ifeq ($(wildcard $(shell which clang++-12)),)
@@ -27,6 +32,8 @@ else
 CXX=clang++-13
 endif
 
+endif
+
 STANDARD=c++17
 
 ifeq ($(CXXFLAGS),)
@@ -38,7 +45,6 @@ ifeq ($(CXX),clang++-13)
 ifeq ($(ONDEBIAN),yes)
 COMPILER_SUITE=clang
 LIBS+=-fuse-ld=lld-13
-# boost is buggy for C++20: error: static_assert failed due to requirement 'detail::is_endian_reversible_inplace<char8_t>
 STANDARD=c++20
 endif
 endif
diff --git a/debian/control b/debian/control
index 0c236a3..a06886a 100644
--- a/debian/control
+++ b/debian/control
@@ -2,7 +2,7 @@ Source: unicode
 Section: devel
 Priority: optional
 Maintainer: Roland Reichwein <mail@reichwein.it>
-Build-Depends: debhelper (>= 12), libboost1.74-all-dev | libboost-all-dev, libc++-13-dev | libc++-12-dev | libc++-11-dev | libc++-dev, libc++abi-13-dev | libc++abi-12-dev | libc++abi-11-dev | libc++abi-dev, lld-13 | lld-12 | lld-11 | lld, clang-13 | clang-12 | clang-11 | clang, libunwind-13-dev | libunwind-12-dev | libunwind-dev, llvm-13-linker-tools | llvm-12-linker-tools | llvm-11-linker-tools | clang
+Build-Depends: debhelper (>= 12), lsb-release, libboost1.74-all-dev | libboost-all-dev, libc++-13-dev | libc++-12-dev | libc++-11-dev | libc++-dev, libc++abi-13-dev | libc++abi-12-dev | libc++abi-11-dev | libc++abi-dev, lld-13 | lld-12 | lld-11 | lld, clang-13 | clang-12 | clang-11 | clang, libunwind-13-dev | libunwind-12-dev | libunwind-dev, llvm-13-linker-tools | llvm-12-linker-tools | llvm-11-linker-tools | clang
 Standards-Version: 4.5.0
 Homepage: http://www.reichwein.it/unicode/
 
diff --git a/src/test-unicode.cpp b/src/test-unicode.cpp
index e7dfa6f..2675989 100644
--- a/src/test-unicode.cpp
+++ b/src/test-unicode.cpp
@@ -5,7 +5,11 @@
 #include <boost/test/data/dataset.hpp>
 #include <boost/test/data/monomorphic.hpp>
 #include <boost/test/data/test_case.hpp>
+#include <boost/version.hpp>
+#if BOOST_VERSION > 106700
+// CPU Timer in Debian 10 boost is broken, so leave it to std::chrono wall clock
 #include <boost/timer/timer.hpp>
+#endif
 
 #include <array>
 #include <chrono>
@@ -99,6 +103,10 @@ namespace std {
   return os;
  }
 
+} // namespace std
+
+namespace {
+
  // utility wrapper to adapt locale-bound facets for wstring/wbuffer convert
  template<class Facet>
  struct deletable_facet : Facet
@@ -174,7 +182,8 @@ namespace std {
  {
   return conv32.from_bytes(conv32.to_bytes(s));
  }
-}
+
+} // namespace
 
 // check assumptions about environment
 BOOST_AUTO_TEST_CASE(string_u8string)
@@ -530,16 +539,23 @@ public:
 
  ~CPUTimer()
  {
+#if BOOST_VERSION > 106700
   auto elapsed_cpu{mCPUTimer.elapsed()};
+#endif
   std::cout << mName << ": " << std::chrono::duration<double>(std::chrono::steady_clock::now() - mWallTime0).count() <<
-   "s (" << (double(elapsed_cpu.user + elapsed_cpu.system) / 1000000000) <<
-   "s CPU)" << std::endl;
+   "s" <<
+#if BOOST_VERSION > 106700
+   " (" << (double(elapsed_cpu.user + elapsed_cpu.system) / 1000000000) << "s CPU)" <<
+#endif
+   std::endl;
  }
 
 private:
  std::string mName;
  std::chrono::time_point<std::chrono::steady_clock> mWallTime0;
+#if BOOST_VERSION > 106700
  boost::timer::cpu_timer mCPUTimer;
+#endif
 };
 
 template<typename From, typename ToTypesCollectionType, size_t index = 0>
-- 
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