[PATCHv2] Check generated config files

[Miguel A. Flores Silverio]

Double check configuration files in order to avoid discrepancies
like this: https://bugzilla.redhat.com/show_bug.cgi?id=1347454

Signed-off-by: Miguel Flores Silverio <floresmigu3l(a)gmail.com&gt;
 * PATCHv1
   - Check config files at compilation time

 * PATCHv2
   - Check config files before and after oldconfig is aplied
   - Save log of mismatches in logs directory in tree
   
---
 kernel.spec | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/kernel.spec b/kernel.spec
index d6856d2..d12b74b 100644
--- a/kernel.spec
+++ b/kernel.spec
@@ -1161,7 +1161,6 @@ if [ ! -d .git ]; then
     git commit -a -q -m "baseline"
 fi
 
-
 # released_kernel with possible stable updates
 %if 0%{?stable_base}
 # This is special because the kernel spec is hell and nothing is consistent
@@ -1181,6 +1180,19 @@ make -f %{SOURCE19} config-release
 %endif
 %endif
 
+# Used to check for discrepancies in configuration files
+CheckConfigs() {
+    if [ ! -d ../../logs ];then
+	mkdir ../../logs
+    fi
+    GEN_CONFIG=$1
+    FINAL_CONFIG=$2
+    Arch=$3
+    awk 'NR==FNR{gen_cofigs[$1]++;next;}
+    !($0 in gen_configs)' $FINAL_CONFIG $GEN_CONFIG >
../../logs/config-check-$Arch.log
+    rm $GEN_CONFIG
+}
+
 # Dynamically generate kernel .config files from config-* files
 make -f %{SOURCE20} VERSION=%{version} configs
 
@@ -1227,6 +1239,7 @@ rm -f kernel-%{version}-*debug.config
 # now run oldconfig over all the config files
 for i in *.config
 do
+  cat $i > temp-$i
   mv $i .config
   Arch=`head -1 .config | cut -b 3-`
   make ARCH=$Arch listnewconfig | grep -E '^CONFIG_' >.newoptions || true
@@ -1240,6 +1253,7 @@ do
   make ARCH=$Arch oldnoconfig
   echo "# $Arch" > configs/$i
   cat .config >> configs/$i
+  CheckConfigs temp-$i configs/$i $Arch
 done
 # end of kernel config
 %endif
--
2.7.4