All, I've hit an issue this past weekend trying to compile a custom kernel based on the OpenSUSE stable branch with CONFIG_VFIO_FSL_MC enabled (for NXP QorIQ) on aarch64. This is in order to support passthrough of DPAA2 containers to VMs on a system with a LS1088 processor.
My build host: OpenSUSE LEAP 15.3 (aarch64) rock:~ # uname -a Linux rock 5.3.18-59.19-default #1 SMP Tue Aug 3 14:11:23 UTC 2021 (055c4fd) aarch64 aarch64 aarch64 GNU/Linux rock:~/kernel # gcc --version gcc (SUSE Linux) 7.5.0 Copyright (C) 2017 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Checkout stable branch: rock:~ # git clone https://github.com/SUSE/kernel -b stable Cloning into 'kernel'... remote: Enumerating objects: 11355151, done. remote: Counting objects: 100% (84628/84628), done. remote: Compressing objects: 100% (26754/26754), done. remote: Total 11355151 (delta 60838), reused 73774 (delta 57756), pack-reused 11270523 Receiving objects: 100% (11355151/11355151), 2.37 GiB | 10.37 MiB/s, done. Resolving deltas: 100% (9666658/9666658), done. Checking objects: 100% (33554432/33554432), done. Updating files: 100% (72873/72873), done. Configuration step. Here I've enabled CONFIG_VFIO_FSL_MC=m here after loading /boot/config-5.3.18-59.19-default rock:~/kernel # make menuconfig HOSTCC scripts/basic/fixdep UPD scripts/kconfig/mconf-cfg HOSTCC scripts/kconfig/mconf.o HOSTCC scripts/kconfig/lxdialog/checklist.o HOSTCC scripts/kconfig/lxdialog/inputbox.o HOSTCC scripts/kconfig/lxdialog/menubox.o HOSTCC scripts/kconfig/lxdialog/textbox.o HOSTCC scripts/kconfig/lxdialog/util.o HOSTCC scripts/kconfig/lxdialog/yesno.o HOSTCC scripts/kconfig/confdata.o HOSTCC scripts/kconfig/expr.o LEX scripts/kconfig/lexer.lex.c YACC scripts/kconfig/parser.tab.[ch] HOSTCC scripts/kconfig/lexer.lex.o HOSTCC scripts/kconfig/menu.o HOSTCC scripts/kconfig/parser.tab.o HOSTCC scripts/kconfig/preprocess.o HOSTCC scripts/kconfig/symbol.o HOSTCC scripts/kconfig/util.o HOSTLD scripts/kconfig/mconf # # using defaults found in /boot/config-5.3.18-59.19-default # configuration written to .config *** End of the configuration. *** Execute 'make' to start the build or try 'make help'. Start build rock:~/kernel # make -j4 WRAP arch/arm64/include/generated/uapi/asm/errno.h WRAP arch/arm64/include/generated/uapi/asm/kvm_para.h WRAP arch/arm64/include/generated/uapi/asm/ioctls.h WRAP arch/arm64/include/generated/uapi/asm/ioctl.h WRAP arch/arm64/include/generated/uapi/asm/ipcbuf.h WRAP arch/arm64/include/generated/uapi/asm/msgbuf.h WRAP arch/arm64/include/generated/uapi/asm/poll.h WRAP arch/arm64/include/generated/uapi/asm/resource.h WRAP arch/arm64/include/generated/uapi/asm/sembuf.h WRAP arch/arm64/include/generated/uapi/asm/shmbuf.h WRAP arch/arm64/include/generated/uapi/asm/siginfo.h WRAP arch/arm64/include/generated/uapi/asm/socket.h WRAP arch/arm64/include/generated/uapi/asm/sockios.h WRAP arch/arm64/include/generated/uapi/asm/stat.h WRAP arch/arm64/include/generated/uapi/asm/swab.h WRAP arch/arm64/include/generated/uapi/asm/termbits.h WRAP arch/arm64/include/generated/uapi/asm/termios.h WRAP arch/arm64/include/generated/uapi/asm/types.h .... .... DTC arch/arm64/boot/dts/qcom/sm8250-mtp.dtb DTC arch/arm64/boot/dts/qcom/sm8250-sony-xperia-edo-pdx203.dtb DTC arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revA.dtb DTC arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revC.dtb DTC arch/arm64/boot/dts/qcom/sm8250-sony-xperia-edo-pdx206.dtb DTC arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dtb DTC arch/arm64/boot/dts/xilinx/zynqmp-zcu111-revA.dtb DTC arch/arm64/boot/dts/qcom/sm8350-hdk.dtb DTC arch/arm64/boot/dts/qcom/sm8350-mtp.dtb ============= BUILD STOPS HERE - no error is displayed, return to prompt ============= Run make -j4 again - and we see an error building scripts/modpost rock:~/kernel # make -j4 HOSTLD scripts/mod/modpost /usr/lib64/gcc/aarch64-suse-linux/7/../../../../aarch64-suse-linux/bin/ld: scripts/mod/modpost.o: in function `main': modpost.c:(.text.startup+0x61c): undefined reference to `get_next_line' /usr/lib64/gcc/aarch64-suse-linux/7/../../../../aarch64-suse-linux/bin/ld: modpost.c:(.text.startup+0x710): undefined reference to `get_next_line' collect2: error: ld returned 1 exit status make[1]: *** [scripts/Makefile.host:104: scripts/mod/modpost] Error 1 make: *** [Makefile:1225: prepare0] Error 2 make: *** Waiting for unfinished jobs.... rock:~/kernel # ls -la scripts/mod/ total 460 drwxr-xr-x 1 root root 814 Sep 6 11:55 . drwxr-xr-x 1 root root 4172 Sep 6 11:54 .. -rw-r--r-- 1 root root 4739 Sep 6 11:54 .devicetable-offsets.s.cmd -rw-r--r-- 1 root root 104 Sep 6 11:54 .elfconfig.h.cmd -rw-r--r-- 1 root root 2510 Sep 6 11:54 .empty.o.cmd -rw-r--r-- 1 root root 556 Sep 6 11:54 .file2alias.o.cmd -rw-r--r-- 1 root root 99 Sep 6 11:51 .gitignore -rw-r--r-- 1 root root 104 Sep 6 11:54 .ksym-provides.cmd -rw-r--r-- 1 root root 440 Sep 6 11:54 .ksym-provides.o.cmd -rw-r--r-- 1 root root 416 Sep 6 11:54 .mk_elfconfig.cmd -rw-r--r-- 1 root root 896 Sep 6 11:54 .modpost.o.cmd -rw-r--r-- 1 root root 464 Sep 6 11:54 .sumversion.o.cmd -rw-r--r-- 1 root root 949 Sep 6 11:51 Makefile -rw-r--r-- 1 root root 7438 Sep 6 11:51 devicetable-offsets.c -rw-r--r-- 1 root root 16224 Sep 6 11:54 devicetable-offsets.h -rw-r--r-- 1 root root 48497 Sep 6 11:54 devicetable-offsets.s -rw-r--r-- 1 root root 136 Sep 6 11:54 elfconfig.h -rw-r--r-- 1 root root 54 Sep 6 11:51 empty.c -rw-r--r-- 1 root root 2248 Sep 6 11:54 empty.o -rw-r--r-- 1 root root 45703 Sep 6 11:51 file2alias.c -rw-r--r-- 1 root root 56120 Sep 6 11:54 file2alias.o -rwxr-xr-x 1 root root 75992 Sep 6 11:54 ksym-provides -rw-r--r-- 1 root root 2534 Sep 6 11:51 ksym-provides.c -rw-r--r-- 1 root root 5024 Sep 6 11:54 ksym-provides.o -rwxr-xr-x 1 root root 75152 Sep 6 11:54 mk_elfconfig -rw-r--r-- 1 root root 1269 Sep 6 11:51 mk_elfconfig.c -rw-r--r-- 1 root root 71306 Sep 6 11:51 modpost.c -rw-r--r-- 1 root root 5934 Sep 6 11:51 modpost.h -rw-r--r-- 1 root root 63432 Sep 6 11:54 modpost.o -rw-r--r-- 1 root root 9921 Sep 6 11:51 sumversion.c -rw-r--r-- 1 root root 7480 Sep 6 11:54 sumversion.o Any suggestions or feedback would be appreciated.
