# ❗ Build Failure: BL2\_BASE – "invalid suffix 'x' on integer constant" **URL:** \ **Category:** NXP LX2160\ **Created:** [June 19, 2025, 12:04pm UTC](https://community.solid-run.com/t/build-failure-bl2-base-invalid-suffix-x-on-integer-constant/1029 "2025-06-19T12:04:42Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![vaidic](https://avatars.discourse-cdn.com/v4/letter/v/bb73d2/32.png) [@vaidic](https://community.solid-run.com/u/vaidic)\ **Post date:** [June 19, 2025, 12:04pm UTC](https://community.solid-run.com/t/build-failure-bl2-base-invalid-suffix-x-on-integer-constant/1029/1 "2025-06-19T12:04:42Z")
I’m working on building the img for the **LX2162A Clearfog board** using the `lx2160a_build` setup. [https://github.com/SolidRun/lx2160a\_build/blob/develop-lsdk-21.08/README.md](https://github.com/SolidRun/lx2160a_build/blob/develop-lsdk-21.08/README.md) I’ve set the `TARGET` as `LX2162A_SOM_CLEARFOG_18_9_0` and am running the build with the correct environment variables. However, the build fails with the following compiler error: ```auto plat/nxp/common/setup/ls_bl2_el3_setup.c: In function ‘ls_bl2_el3_plat_arch_setup’: : error: invalid suffix "x" on integer constant plat/nxp/common/setup/ls_bl2_el3_setup.c:189:31: note: in expansion of macro ‘BL2_BASE’ 189 | BL2_BASE, | ^ ~~~~~~~ : error: invalid suffix "x" on integer constant plat/nxp/common/setup/ls_bl2_el3_setup.c:190:63: note: in expansion of macro ‘BL2_BASE’ 190 | (unsigned long)(& __BL2_END__ ) - BL2_BASE, | ^ ~~~~~~~ ``` I’m building natively on the board (Ubuntu 22.04) using the runme.sh script. ```auto ./runme.sh SERDES=LX2162A_CLEARFOG_18_9_0 ``` Any help or insight is appreciated. Thanks! ---
**Author:** ![Manis](https://avatars.discourse-cdn.com/v4/letter/m/aeb1de/32.png) [@Manis](https://community.solid-run.com/u/Manis)\ **Post date:** [July 26, 2025, 7:29pm UTC](https://community.solid-run.com/t/build-failure-bl2-base-invalid-suffix-x-on-integer-constant/1029/2 "2025-07-26T19:29:33Z")
Do you have the `bc` command installed on your build machine? When it’s not installed, you get errors like the one you’re seeing above. Alternatively, there is a pull request in the GitHub repository ([#92](https://github.com/SolidRun/lx2160a_build/pull/92)) which patches the Makefiles so that they don’t require bc anymore.