Linux's ./tools/objtool (of the used kernel version) fails to build: [build 2023-03-15 16:08:35] /usr/bin/gcc -O2 -I/var/lib/laminar/run/buildroot-pcengines_apu2_defconfig/1/buildroot/output/host/include -L/var/lib/laminar/run/buildroot-pcengines_apu2_defcon fig/1/buildroot/output/host/lib -Wl,-rpath,/var/lib/laminar/run/buildroot-pcengines_apu2_defconfig/1/buildroot/output/host/lib -Wp,-MD,/var/lib/laminar/run/buildroot-pcengines_apu2_defconfig/ 1/buildroot/output/build/linux-5.16/tools/objtool/.check.o.d -Wp,-MT,/var/lib/laminar/run/buildroot-pcengines_apu2_defconfig/1/buildroot/output/build/linux-5.16/tools/objtool/check.o -Werror -Wbad-function-cast -Wdeclaration-after-statement -Wformat-security -Wformat-y2k -Winit-self -Wmissing-declarations -Wmissing-prototypes -Wnested-externs -Wno-system-headers -Wold-style-defin ition -Wpacked -Wredundant-decls -Wstrict-prototypes -Wswitch-default -Wswitch-enum -Wundef -Wwrite-strings -Wformat -Wno-type-limits -Wstrict-aliasing=3 -Wshadow -Wno-switch-default -Wno-swi tch-enum -Wno-packed -Wno-nested-externs -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -std=gnu89 -g -I/var/lib/laminar/run/buildroot-pcengines_apu2_defconfig/1/buil droot/output/build/linux-5.16/tools/include -I/var/lib/laminar/run/buildroot-pcengines_apu2_defconfig/1/buildroot/output/build/linux-5.16/tools/arch/x86/include/uapi -I/var/lib/laminar/run/bu ildroot-pcengines_apu2_defconfig/1/buildroot/output/build/linux-5.16/tools/arch/x86/include -I/var/lib/laminar/run/buildroot-pcengines_apu2_defconfig/1/buildroot/output/build/linux-5.16/tools /objtool/include -I/var/lib/laminar/run/buildroot-pcengines_apu2_defconfig/1/buildroot/output/build/linux-5.16/tools/objtool/arch/x86/include -I/var/lib/laminar/run/buildroot-pcengines_apu2_defconfig/1/buildroot/output/host/include -I/var/lib/laminar/run/buildroot-pcengines_apu2_defconfig/1/buildroot/output/build/linux-5.16/tools/lib -D"BUILD_STR(s)=#s" -c -o /var/lib/laminar/run/buildroot-pcengines_apu2_defconfig/1/buildroot/output/build/linux-5.16/tools/objtool/check.o check.c [build 2023-03-15 16:08:36] check.c: In function 'validate_call': [build 2023-03-15 16:08:36] check.c:2836:58: error: '%d' directive output may be truncated writing between 1 and 10 bytes into a region of size 9 [-Werror=format-truncation=] [build 2023-03-15 16:08:36] 2836 | snprintf(pvname, sizeof(pvname), "pv_ops[%d]", idx); [build 2023-03-15 16:08:36] | ^~ [build 2023-03-15 16:08:36] In function 'call_dest_name', [build 2023-03-15 16:08:36] inlined from 'call_dest_name' at check.c:2824:27, [build 2023-03-15 16:08:36] inlined from 'validate_call' at check.c:2908:3: [build 2023-03-15 16:08:36] check.c:2836:50: note: directive argument in the range [-268435456, 268435455] [build 2023-03-15 16:08:36] 2836 | snprintf(pvname, sizeof(pvname), "pv_ops[%d]", idx); [build 2023-03-15 16:08:36] | ^~~~~~~~~~~~ [build 2023-03-15 16:08:36] check.c:2836:17: note: 'snprintf' output between 10 and 19 bytes into a destination of size 16 [build 2023-03-15 16:08:36] 2836 | snprintf(pvname, sizeof(pvname), "pv_ops[%d]", idx); [build 2023-03-15 16:08:36] | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [build 2023-03-15 16:08:36] check.c: In function 'validate_call': [build 2023-03-15 16:08:36] check.c:2836:58: error: '%d' directive output may be truncated writing between 1 and 10 bytes into a region of size 9 [-Werror=format-truncation=] [build 2023-03-15 16:08:36] 2836 | snprintf(pvname, sizeof(pvname), "pv_ops[%d]", idx); [build 2023-03-15 16:08:36] | ^~ [build 2023-03-15 16:08:36] In function 'call_dest_name', [build 2023-03-15 16:08:36] inlined from 'call_dest_name' at check.c:2824:27, [build 2023-03-15 16:08:36] inlined from 'validate_call' at check.c:2920:3: [build 2023-03-15 16:08:36] check.c:2836:50: note: directive argument in the range [-268435456, 268435455] [build 2023-03-15 16:08:36] 2836 | snprintf(pvname, sizeof(pvname), "pv_ops[%d]", idx); [build 2023-03-15 16:08:36] | ^~~~~~~~~~~~ [build 2023-03-15 16:08:36] check.c:2836:17: note: 'snprintf' output between 10 and 19 bytes into a destination of size 16 [build 2023-03-15 16:08:36] 2836 | snprintf(pvname, sizeof(pvname), "pv_ops[%d]", idx); [build 2023-03-15 16:08:36] | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [build 2023-03-15 16:08:36] check.c: In function 'validate_call': [build 2023-03-15 16:08:36] check.c:2836:58: error: '%d' directive output may be truncated writing between 1 and 10 bytes into a region of size 9 [-Werror=format-truncation=] [build 2023-03-15 16:08:36] 2836 | snprintf(pvname, sizeof(pvname), "pv_ops[%d]", idx); [build 2023-03-15 16:08:36] | ^~ [build 2023-03-15 16:08:36] In function 'call_dest_name', [build 2023-03-15 16:08:36] inlined from 'call_dest_name' at check.c:2824:27, [build 2023-03-15 16:08:36] inlined from 'validate_call' at check.c:2914:3: [build 2023-03-15 16:08:36] check.c:2836:50: note: directive argument in the range [-268435456, 268435455] [build 2023-03-15 16:08:36] 2836 | snprintf(pvname, sizeof(pvname), "pv_ops[%d]", idx); [build 2023-03-15 16:08:36] | ^~~~~~~~~~~~ [build 2023-03-15 16:08:36] check.c:2836:17: note: 'snprintf' output between 10 and 19 bytes into a destination of size 16 [build 2023-03-15 16:08:36] 2836 | snprintf(pvname, sizeof(pvname), "pv_ops[%d]", idx); [build 2023-03-15 16:08:36] | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [build 2023-03-15 16:08:38] cc1: all warnings being treated as errors [build 2023-03-15 16:08:38] make[4]: *** [/var/lib/laminar/run/buildroot-pcengines_apu2_defconfig/1/buildroot/output/build/linux-5.16/tools/build/Makefile.build:97: /var/lib/laminar/run/buildroot-pcengines_apu2_defconfig/1/buildroot/output/build/linux-5.16/tools/objtool/check.o] Error 1 [build 2023-03-15 16:08:38] make[3]: *** [Makefile:56: /var/lib/laminar/run/buildroot-pcengines_apu2_defconfig/1/buildroot/output/build/linux-5.16/tools/objtool/objtool-in.o] Error 2 [build 2023-03-15 16:08:38] make[2]: *** [Makefile:69: objtool] Error 2 [build 2023-03-15 16:08:38] make[1]: *** [Makefile:1349: tools/objtool] Error 2 [build 2023-03-15 16:08:38] make[1]: Leaving directory '/var/lib/laminar/run/buildroot-pcengines_apu2_defconfig/1/buildroot/output/build/linux-5.16' [build 2023-03-15 16:08:38] make: *** [package/pkg-generic.mk:293: /var/lib/laminar/run/buildroot-pcengines_apu2_defconfig/1/buildroot/output/build/linux-5.16/.stamp_built] Error 2 I guess that g:82880283d7fcd0a1d20964a56d6d1a5cc0df0713 (upstream Linux tree) would be a proper fix. Full build log at http://toolchain.lug-owl.de/laminar/log/buildroot-pcengines_apu2_defconfig/1 (This is the last ticket. All other configurations were built successfully!)
Thank you for your report. The issue tracker for the Buildroot project has been moved to the Gitlab.com issue tracker: https://gitlab.com/buildroot.org/buildroot/-/issues We are taking this opportunity to close old issues in this old tracker. If you believe your issue is still relevant, please open one in the new issue tracker. Thank you!