Using -Oline -j 72 W=1 redirect to /tmp/tmp.5POvu8b1jp and /tmp/tmp.sL0PlR5WEW
LLVM=1 cc=clang
clang version 18.1.8 (Fedora 18.1.8-1.fc40)
Tree base:
a362c02118cf ("net: phylink: add support for PCS supported_interfaces bitmap")
Skip baseline build, not the first patch and no Kconfig updates
Building the tree before the patch
make[1]: Entering directory '/home/nipa/net-next/wt-1/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-1/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net-next/wt-1/build_clang/tools/objtool && make O=/home/nipa/net-next/wt-1/build_clang subdir=tools/objtool --no-print-directory -C objtool 
  CALL    ../scripts/checksyscalls.sh
  INSTALL libsubcmd_headers
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  drivers/net/pcs/pcs-xpcs.o
  LD [M]  drivers/net/pcs/pcs_xpcs.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#8636)
  LD [M]  drivers/net/pcs/pcs_xpcs.ko
Building the tree with the patch
make[1]: Entering directory '/home/nipa/net-next/wt-1/build_clang'
  GEN     Makefile
#
# configuration written to .config
#
make[1]: Leaving directory '/home/nipa/net-next/wt-1/build_clang'
  SYNC    include/config/auto.conf
  GEN     Makefile
  GEN     Makefile
mkdir -p /home/nipa/net-next/wt-1/build_clang/tools/objtool && make O=/home/nipa/net-next/wt-1/build_clang subdir=tools/objtool --no-print-directory -C objtool 
  CALL    ../scripts/checksyscalls.sh
  INSTALL libsubcmd_headers
  CHK     kernel/kheaders_data.tar.xz
  CC [M]  drivers/net/pcs/pcs-xpcs.o
  LD [M]  drivers/net/pcs/pcs_xpcs.o
  MODPOST Module.symvers
Kernel: arch/x86/boot/bzImage is ready  (#8636)
  CC [M]  drivers/net/pcs/pcs_xpcs.mod.o
  LD [M]  drivers/net/pcs/pcs_xpcs.ko