Cannot compile U-Boot for arria 5

Hello all,

I am facing some problem that I cannot build u-boot for arria5.

The platform is x86_64 Ubuntu 14.04 LTS.

At first I executed as below.

$ cd intelFPGA/18.0/embedded 
$ ./embedded_command_shell.sh  
$ ...# download and install gcclinaro-7.3.1 $ export CROSS_COMPILE=/path/to/linaro_installation_directory/bin/arm-linux-gnueabihf-  
$ mkdir -p ~/u-boot $ cd ~/u-boot
$ git clone https://github.com/altera-opensource/u-boot-socfpga.git 
$ cd u-boot-socfpga
$ git checkout rel_socfpga_v2017.09_18.06.02_pr # This tag is the latest of rel*
$ make socfpga_arria5_config $ make 

On the make, I got the next messages.

...  LD    u-boot drives/ddr/altera/built-in.o: In function `sdram_calculate_size': 
~/u-boot/u-boot-sockfpga/drivers/ddr/altera/sdram.c:482: undefined reference to `socfpga_get_sdram_config' 
path/to/linaro_installation_directory/bin/arm-linux-gnueabihf-ld.bfd: BFD (Linaro_Binutils-2018.05) 2.28.2.20170706 assertion fail /home/tcwg-buildslave/workspace/tcwg-make-release/builder-arch/adm64/label/tcwg-x86_64-build/target/arm-linux-gnueabihf/snapshots/binutils-gdb.git~users~linaro~binutils-2_28-branch/bfd/elf32-arm.c:9514
 make: ***  Error 1

However, on a commit tagged with v2018.07-rc3, we successfully built u-boot.

Could you tell me why this fails?

Or is it enough to use u-boot from a commit “v2018.07-rc3”?

Thank you.