dependencies: ensure that DESTDIR isn't set when running Buildroot

Having DESTDIR set in the environment before running Buildroot creates
some funky problems in the build process. Prevent users from running
into this kind of troubles.

Cc: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

diff --git a/support/dependencies/dependencies.sh b/support/dependencies/dependencies.sh
index c47ffcf43cc319bfe7caf1c0e6b2a0e359d2a1dd..43ec3cc0f9a315eb5a492fc53610ebe1b009bf84 100755 (executable)
--- a/support/dependencies/dependencies.sh
+++ b/support/dependencies/dependencies.sh
@@ -48,6 +48,12 @@ if test -n "$PERL_MM_OPT" ; then
     exit 1
 fi
 
+if test -n "$DESTDIR" ; then
+    /bin/echo -e "\nYou have the DESTDIR environment variable set. Please"
+    /bin/echo -e "unset it so that Buildroot can work properly."
+    exit 1
+fi
+
 # Verify that which is installed
 if ! which which > /dev/null ; then
        /bin/echo -e "\nYou must install 'which' on your build machine\n";