Compilation on Ubuntu 22.04 LTS

[myfingerhurt]

OS: ubuntu 22.04 LTS Server
uboot 2017.11

I tried using the 2019.04 version, and although there were no compilation problems, I couldn't get it to run. Since I didn't know how to fix the issue, I decided to address the compilation problem in the 2017.11 version instead.

• pit 1. no config
  sudo apt-get install -y bison flex
make socfpga_de10_nano_defconfig

• pit 2. no gcc
  apt-get install crossbuild-essential-armhf

• pit 3. cc1: error: bad value (‘generic-armv7-a’) for ‘-mtune=’ switch
export ARCH=arm;export CROSS_COMPILE=arm-linux-gnueabihf-
  or
  make V=1 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-

• pit 4. tc-parser.tab.o:(.bss+0x10): multiple definition of `yylloc'; scripts/dtc/dtc-lexer.lex.o:(.bss+0x0): first defined here

        $ nano scripts/dtc/dtc-lexer.lex.c
              //YYLTYPE yylloc;
              extern YYLTYPE yylloc;

• pit 5. arm-linux-gnueabihf-gcc: error: unrecognized -march target: armv5
  this took me 2-days to solve, if you did armv7 or armv5t it would give you something like this.

              arch/arm/cpu/armv7/cache_v7.c
              {standard input}:35: Error: selected processor does not support `mcr p15,0,r3,c7,c5,0' in Thumb mode

Since the Altera socfpga is Cortex-A9, so armv7-a is the correct choice.

        nano .\arch\arm\Makefile
              # Replace
              # arch-$(CONFIG_CPU_V7) =$(call cc-option, -march=armv7-a, \
              #                   $(call cc-option, -march=armv7, -march=armv5))
              arch-$(CONFIG_CPU_V7) =$(call cc-option, -march=armv7-a, \
                                      $(call cc-option, -march=armv7-a, -march=armv7-a))

At this point, you should be able to pass the compilation.

[ikwzm]

Thanks for your valuable information.