Add cross compiling pkg-config disabled warning

We have historically silently disabled pkg-config when cross compiling in
order to avoid host pkg-config contamination of the target build.
pkg-config files are present on many embedded targets, and make the correct
detection/configuration of dependencies far more convenient for the
developer. It is therefor valuable to advertise that pkg-config
functionality is available but disabled barring direct involvement on their
parts, rather than silently disabling it.

Reviewed-by: Thiago Macieira <thiago.macieira@nokia.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/configure b/configure
index 485c71c99d..d97149da94 100755
--- a/configure
+++ b/configure
@@ -2841,6 +2841,11 @@ if [ "$QT_CROSS_COMPILE" = "yes" ]; then
             echo >&2 ""
         fi
     else
+        echo >&2 ""
+        echo >&2 "You have not explicitly asked to use pkg-config and are cross-compiling."
+        echo >&2 "pkg-config will not be used to automatically query cflag/lib parameters for"
+        echo >&2 "dependencies"
+        echo >&2 ""
         PKG_CONFIG=""
     fi
 fi