From: Johannes Berg <[email protected]>

Upstream commit a029928078ce7708c4cd54a6b9f1fc0212fc3395

Catch running make in the backport template directory by
checking for the .local-symbols file. If it isn't there
then we're in the input/template directory rather than in
an output tree, give the user a hint about it instead of
keeling over.

Signed-off-by: Johannes Berg <[email protected]>
Signed-off-by: Luis R. Rodriguez <[email protected]>
Signed-off-by: Hauke Mehrtens <[email protected]>
---
 backport/Makefile |   12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/backport/Makefile b/backport/Makefile
index 287b27d..421a4f6 100644
--- a/backport/Makefile
+++ b/backport/Makefile
@@ -37,6 +37,18 @@ mrproper:
        @rm -f backport-include/backport/autoconf.h
 
 .DEFAULT:
+       @set -e ; test -f .local-symbols || (                                   
        \
+       echo "/--------------"                                                  
        ;\
+       echo "| You shouldn't run make in the backports tree, but only in"      
        ;\
+       echo "| the generated output. This here is only the skeleton code"      
        ;\
+       echo "| copied into the output directory. To use the backport system"   
        ;\
+       echo "| from scratch, go into the top-level directory and run"          
        ;\
+       echo "| ./gentree.py /path/to/linux-next/ /tmp/output"                  
        ;\
+       echo "| and then make menuconfig/... in the output directory. See"      
        ;\
+       echo "| ./gentree.py --help"                                            
        ;\
+       echo "| for more options."                                              
        ;\
+       echo "\\--"                                                             
        ;\
+       false)
        @set -e ; test -f $(KERNEL_CONFIG) || (                                 
        \
        echo "/--------------"                                                  
        ;\
        echo "| Your kernel headers are incomplete/not installed."              
        ;\
-- 
1.7.10.4

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