Use THREADFLAGS on FreeBSD

Instead of modifying LDFLAGS and CXXFLAGS

Fixes a few of these:
c++: warning: argument unused during compilation: '-pthread'

diff --git a/configure.ac b/configure.ac
index 740aa579d77f2a2986d778d338d7ab75bb2d5574..831786e3f4ecb72d4b8c59648dd11be61c1a0180 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -153,8 +153,7 @@ darwin*)
   CXXFLAGS="-D__APPLE_USE_RFC_3542 -D_XOPEN_SOURCE $CXXFLAGS"
   ;;
 freebsd*)
-  LDFLAGS="-pthread $LDFLAGS"
-  CXXFLAGS="-pthread $CXXFLAGS"
+  THREADFLAGS="-pthread"
   have_freebsd="yes"
   ;;
 *)