Platform detection: Use freebsd-g++ on systems < 10, otherwise -clang

FreeBSD uses gcc as the default compiler until FreeBSD 10 where it was
switched to clang for the whole system. Choose freebsd-clang
for any system release > 10, otherwise choose freebsd-g++ by default.

Change-Id: I2bf38aa027453c25ed2a29d587c2962ded5fcd4a
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>

1 files changed, 11 insertions, 4 deletions

diff --git a/configure b/configure
index 0e0a36b00f..d175ed32b5 100755
--- a/configure
+++ b/configure
@@ -2859,10 +2859,17 @@ if [ -z "$PLATFORM" ]; then
         PLATFORM=ultrix-g++
         ;;
      FreeBSD:*)
-        PLATFORM=freebsd-clang
-        PLATFORM_NOTES="
-            - Also available for FreeBSD: freebsd-g++
-        "
+        if [ "$(uname -r | cut -d. -f1)" -ge 10 ]; then
+            PLATFORM=freebsd-clang
+            PLATFORM_NOTES="
+                - Also available for FreeBSD: freebsd-g++
+            "
+        else
+            PLATFORM=freebsd-g++
+            PLATFORM_NOTES="
+                - Also available for FreeBSD: freebsd-clang
+            "
+        fi
         ;;
      OpenBSD:*)
         PLATFORM=openbsd-g++