Messages in this thread |  | | From | Arnd Bergmann <> | Subject | Re: enabling COMPILE_TEST support for GCC plugins in v4.11 | Date | Fri, 09 Dec 2016 11:40:52 +0100 |
| |
On Thursday, December 8, 2016 11:00:42 AM CET Kees Cook wrote:
> If you have a moment, applying 215e2aa6c024[1] and reverting > a519167e753e for an allyesconfig/allmodconfig build should let you > know if things are working correctly with headers installed. If anyone > sees any problems, please let me know and I can queue up fixes.
Using gcc-4.9.3 or gcc-5.3.1 for an ARM allmodconfig build, I get tons of errors such as this one:
/git/arm-soc/init/initramfs.c: In function 'error': /git/arm-soc/init/initramfs.c:50:1: error: unrecognizable insn: } ^ (insn 26 25 27 5 (set (reg:SI 111 [ local_entropy.243 ]) (rotatert:SI (reg:SI 116 [ local_entropy.243 ]) (const_int -30 [0xffffffffffffffe2]))) -1 (nil)) *** WARNING *** there are active plugins, do not report this as a bug unless you can reproduce it without enabling any plugins. Event | Plugins PLUGIN_ATTRIBUTES | latent_entropy_plugin PLUGIN_START_UNIT | latent_entropy_plugin /git/arm-soc/init/initramfs.c:50:1: internal compiler error: in extract_insn, at recog.c:2202 /git/arm-soc/arch/arm/vfp/vfpmodule.c: In function 'vfp_init': /git/arm-soc/arch/arm/vfp/vfpmodule.c:824:1: error: unrecognizable insn: } ^ (insn 138 137 139 17 (set (reg:SI 165 [ local_entropy.93 ]) (rotatert:SI (reg:SI 150 [ local_entropy.93 ]) (const_int -9 [0xfffffffffffffff7]))) -1 (nil)) *** WARNING *** there are active plugins, do not report this as a bug unless you can reproduce it without enabling any plugins.
Using gcc-6.1.1 or gcc-7.0.0, everything works fine as far as I can tell. With some older Ubuntu binary toolchains, I get this one:
In file included from <stdin>:1:0: /git/arm-soc/scripts/gcc-plugins/gcc-common.h:4:22: fatal error: bversion.h: No such file or directory compilation terminated. Cannot use CONFIG_GCC_PLUGINS: your gcc installation does not support plugins, perhaps the necessary headers are missing?
and I can't find the packages for the headers (I still get them for gcc-5, but not older versions). On very old toolchains (e.g. gcc-4.3), I get this one:
Cannot use CONFIG_GCC_PLUGINS: your gcc version does not support plugins, you should upgrade it to at least gcc 4.5 scripts/Makefile.gcc-plugins:54: recipe for target 'gcc-plugins-check' failed
Arnd
|  |