/usr/src/kernels/4.18.0-553.157.1.el8_10.x86_64/lib/lz4
Edit: /usr/src/kernels/4.18.0-553.157.1.el8_10.x86_64/lib/lz4/Makefile (161B)
ccflags-y += -O3
obj-$(CONFIG_LZ4_COMPRESS) += lz4_compress.o
obj-$(CONFIG_LZ4HC_COMPRESS) += lz4hc_compress.o
obj-$(CONFIG_LZ4_DECOMPRESS) += lz4_decompress.o