CPack changes checksum of prebuild jar files
I'm using cmake/cpack to generate rpm packages. I'm installing jar files with install(DIRECTORY … DESTINATION …) or install(FILES … DESTINATION …). These jar files are prebuild and have a known checksum. But in preperation to pack them, I can see, that the files did not get copied 1:1 to _CPack_Packages. Instead the jar files got somehow modified which changes the known checksum of them. This modified files now are packed into the rpm and later on on the target system checksum validation will fail. The jar file will still work, so there is no modification preventing it from working. Is this some kind of compression and if so, is there a way to disable it.
I only noticed it for jar files. Renaming the jar files to e.g. .jar.bak will prevent any modification from cpack.
Tested with latest version cmake-3.30.2-linux-x86_64
https://discourse.cmake.org/t/cpack-rpm-prebuild-jar-file-changes-checksum/11110
Activity
Problem solved. Thanks to Eric Noulard.
https://discourse.cmake.org/t/cpack-rpm-prebuild-jar-file-changes-checksum/11110/5
Solution was to disable jar repackaging.
set(CPACK_RPM_SPEC_MORE_DEFINE "%define __jar_repack %{nil}")
