configure: Document that -sdk only applies to the target mkspec

Change-Id: Ie4a9e7c9d2888f92aa891ba8fcc034ea49b22de2
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@digia.com>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/configure b/configure
index 81e2a93c28..116df1477b 100755
--- a/configure
+++ b/configure
@@ -3758,6 +3758,8 @@ Qt/Mac only:
 
     -sdk <sdk> ......... Build Qt using Apple provided SDK <sdk>. The argument should be
                          one of the available SDKs as listed by 'xcodebuild -showsdks'.
+                         Note that the argument applies only to Qt libraries and applications built
+                         using the target mkspec - not host tools such as qmake, moc, rcc, etc.
 
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