My current linux system has kernel-3.10.0-693.21.1.el7.x86_64 installed and now am trying to upgrade it to kernel-5.5.7 which is the latest stable release.
Post compiling the tarball for kernel-5.7.7 obtained from https://www.kernel.org/ I obtained an rpm which is close to 590M in size. The previous rpm that my existing machine uses is mere 150M.
I used https://linuxhint.com/compile-linux-kernel-centos7/ for compilation.
On observing file content, I see all files in the 3.10.0.693 rpm are compresses with .xz extension whereas this compression was not present in my newly compiled rpm.
I tried a CONFIG_MODULE_COMPRESS_XZ=y and CONFIG_DECOMPRESS_XZ=n options before starting make binrpm-pkg but yet the rpm size is huge.
Can anyone suggest what flags to use and where to use them? Shall I edit the .config file or the Makefile for each file within the rpm to be compressed with .xz extension.
Following is just for reference
rpm -ql kernel-3.10.0-693.21.1.el7.x86_64 | grep '.xz' | wc -l2406rpm -qpl kernel-5.7.7-1.x86_64.rpm | grep '.xz' | wc -l0