Boost 1.61 required for clang/libc++

The libc++ headers aren't specific enough and causes the compiler to think
there are ambiguous functions when using older Boost versions.

diff --git a/CMakeLists.txt b/CMakeLists.txt
index dee408e3c3d8184f0522fd27d603dbae1a39f5dc..bc60fe4866b7ae9aab9df0fbf7dc4fb02d6d4b1f 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -62,7 +62,14 @@ include_directories(SYSTEM include)
 set(BOOST_USE_STATIC_LIBS OFF)
 set(BOOST_USE_MULTITHREADED OFF)
 set(BOOST_USE_STATIC_RUNTIME OFF)
-set(BOOST_MINVERSION 1.57.0)
+if (CMAKE_SYSTEM_NAME MATCHES "Darwin"
+    OR (CMAKE_SYSTEM_NAME MATCHES "FreeBSD"
+        AND CMAKE_C_COMPILER_ID MATCHES "Clang"))
+    # we need a more recent boost for libc++ used by clang on OSX and FreeBSD
+    set(BOOST_MINVERSION 1.61.0)
+else ()
+    set(BOOST_MINVERSION 1.57.0)
+endif ()
 set(BOOST_NO_BOOST_CMAKE ON)
 
 # first check for Boost installed on the system