On Thu, Jan 06, 2022 at 11:16:19AM +0100, Pavel Machek wrote:

Hi!

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I wonder if you saw this message of mine the other day.

Seen the message.

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I'm getting a lot of build failures -- missing gmp.h:

UPD include/generated/utsrelease.h 1317In file included from /builds/hVatwYBy/68/cip-project/cip-testing/linux-stable-rc-ci/gcc/gcc-8.1.0-nolibc/arm-linux-gnueabi/bin/../lib/gcc/arm-linux-gnueabi/8.1.0/plugin/include/gcc-plugin.h:28:0, 1318 from scripts/gcc-plugins/gcc-common.h:7, 1319 from scripts/gcc-plugins/arm_ssp_per_task_plugin.c:3: 1320/builds/hVatwYBy/68/cip-project/cip-testing/linux-stable-rc-ci/gcc/gcc-8.1.0-nolibc/arm-linux-gnueabi/bin/../lib/gcc/arm-linux-gnueabi/8.1.0/plugin/include/system.h:687:10: fatal error: gmp.h: No such file or directory 1321 #include <gmp.h> 1322 ^~~~~~~ 1323compilation terminated. 1324scripts/gcc-plugins/Makefile:47: recipe for target 'scripts/gcc-plugins/arm_ssp_per_task_plugin.so' failed 1325

https://gitlab.com/cip-project/cip-testing/linux-stable-rc-ci/-/tree/linux-5...

What gcc plugins are you trying to build with?

We saw a similar problem with mainline/next about a year ago, after v5.10 was released. In our case it failed with gmp.h because libmpc-dev was not installed on the host; then libiberty-dev was needed too

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We installed libgmp-dev, libmpc-dev and libiberty-dev. That generally helps. FWIW, this is needed for 5.11+.

Yep, but I'm not the one that can do the installation, our q&a team does that. They are aware of the problem now, but it may take a while to solve due to holidays etc.

I believe -stable team should be more conservative and should not introduce regressions like this.

If you know a way to solve this, while still solving the original bug report that this commit fixes, I will be glad to consider it.

thanks,

greg k-h