I am trying to understand a change to the u-boot, Makefile from last year, 10
Aug 2024 as commit 0x2956a84 ; The change commit messages says don't use CFLAGS
for environment text files. I am unsure of how to properly set the Makefile
variable 'cpp_flags' when compiling u-boot for the RaspberryPi5 ? Now when
compiling for Pi5 I get the following error,
ENVP include/generated/env.in
| cc1: warning: unknown register name: x18
| cc1: error: bad value ('armv8-a+crc') for '-march=' switch
| cc1: note: valid arguments to '-march=' switch are: nocona core2 nehalem
corei7 westmere sandybridge corei7-avx ivybridge core-avx-i haswell core-avx2
broadwell skylake skylake-avx512 cannonlake icelake-client rocketlake
icelake-server cascadelake tigerlake cooperlake sapphirerapids alderlake
bonnell at
| make: *** [Makefile:1877: include/generated/env.in] Error 1
| WARNING: exit code 2 from a shell command.
Micheal S. Chaffin
Principal Software Engineer
21 Software
