dkms: Enable debuginfo option to be set with zfs sysconfig file

On some Linux distributions, the kernel module build will not
default to building with debuginfo symbols, which can make it
difficult for debugging and testing.

For this case, we provide a flag to override the build to force
debuginfo to be produced for the kernel module build.

Reviewed-by: Tony Hutter <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Co-authored-by: Neal Gompa <[email protected]>
Co-authored-by: Simon Watson <[email protected]>
Signed-off-by: Neal Gompa <[email protected]>
Signed-off-by: Simon Watson <[email protected]>
Closes #8304 

1 files changed, 4 insertions, 0 deletions

diff --git a/scripts/dkms.mkconf b/scripts/dkms.mkconf
index c40d0e828..e1a49dca1 100755
--- a/scripts/dkms.mkconf
+++ b/scripts/dkms.mkconf
@@ -58,6 +58,10 @@ PRE_BUILD="configure
       then
         echo --enable-debug
       fi
+      if [[ \${ZFS_DKMS_ENABLE_DEBUGINFO,,} == @(y|yes) ]]
+      then
+        echo --enable-debuginfo
+      fi
     }
   )
 "