[PATCH dwarves 1/4] tests/reproducible_builds: support envvar-specified vmlinux

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for running "tests" script on systems on which vmlinux is not
locatable via pahole, it is useful to be able to specify a
path to vmlinux that works across tests like this:

$ vmlinux=/path2/vmlinux bash ./tests

Signed-off-by: Alan Maguire <alan.maguire@xxxxxxxxxx>
---
 tests/reproducible_build.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/reproducible_build.sh b/tests/reproducible_build.sh
index e3c5c23..8a151a9 100755
--- a/tests/reproducible_build.sh
+++ b/tests/reproducible_build.sh
@@ -4,7 +4,7 @@
 # Test if BTF generated serially matches reproducible parallel DWARF loading + serial BTF encoding
 # Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> (C) 2024-
 
-vmlinux=$1
+vmlinux=${vmlinux:-1}
 
 if [ -z "$vmlinux" ] ; then
 	vmlinux=$(pahole --running_kernel_vmlinux)
-- 
2.43.5





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