Using -Oline -j 72 W=1 redirect to /tmp/tmp.i19qHzC10J and /tmp/tmp.MIbb14gzY0
CC=ccache gcc
gcc (GCC) 15.1.1 20250425 (Red Hat 15.1.1-1)
Tree base:
e4432ad5e4fe ("net: airoha: Initialize PPE UPDMEM source-mac table")
Skip baseline build, not the first patch and no Kconfig updates
Building the tree before the patch
make[1]: Entering directory '/home/nipa/net/wt-0/build_32bit'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_32bit'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
  CALL    ../scripts/checksyscalls.sh
  CC [M]  drivers/net/ethernet/airoha/airoha_ppe.o
  LD [M]  drivers/net/ethernet/airoha/airoha-eth.o
  CHK     kernel/kheaders_data.tar.xz
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#730)
  LD [M]  drivers/net/ethernet/airoha/airoha-eth.ko
Building the tree with the patch
make[1]: Entering directory '/home/nipa/net/wt-0/build_32bit'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net/wt-0/build_32bit'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
  CALL    ../scripts/checksyscalls.sh
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  drivers/net/ethernet/airoha/airoha_ppe.o
  LD [M]  drivers/net/ethernet/airoha/airoha-eth.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#730)
  CC [M]  drivers/net/ethernet/airoha/airoha-eth.mod.o
  LD [M]  drivers/net/ethernet/airoha/airoha-eth.ko