Description of problem:
Cross compiles of the linux kernel 6.0-rc1 allmodconfig fail for arm, arm64, mips, powerpc, and s390.

This originates in scripts/gcc-plugins/Kconfig, which has this entry:

menuconfig GCC_PLUGINS
        bool "GCC plugins"
        depends on HAVE_GCC_PLUGINS
        depends on CC_IS_GCC
        depends on $(success,test -e $(shell,$(CC) -print-file-name=plugin)/include/plugin-version.h)
        default y
        depends on $(success,test -e $(shell,$(CC) -print-file-name=plugin)/include/plugin-version.h)

arch/sparc/Kconfig does not include
	select HAVE_GCC_PLUGINS
but all the others do.

The -print-file-name tests passes for all the cross-compilers, but does not 
for native x86:

$ gcc -print-file-name=plugin
plugin 
$ powerpc64-linux-gnu-gcc -print-file-name=plugin
/usr/lib/gcc/powerpc64-linux-gnu/12/plugin
$ aarch64-linux-gnu-gcc -print-file-name=plugin
/usr/lib/gcc/aarch64-linux-gnu/12/plugin

$ find /usr/lib/gcc -name plugin-version.h
/usr/lib/gcc/s390x-linux-gnu/12/plugin/include/plugin-version.h
/usr/lib/gcc/aarch64-linux-gnu/12/plugin/include/plugin-version.h
/usr/lib/gcc/powerpc64-linux-gnu/12/plugin/include/plugin-version.h
/usr/lib/gcc/sparc64-linux-gnu/12/plugin/include/plugin-version.h
/usr/lib/gcc/arm-linux-gnueabi/12/plugin/include/plugin-version.h
/usr/lib/gcc/mips64-linux-gnu/12/plugin/include/plugin-version.h

so  the .x86 .config file only gets:
CONFIG_HAVE_GCC_PLUGINS=y

while the others get that, CONFIG_GCC_PLUGINS, and a several
specific plugins:
build-arm64/.config:CONFIG_HAVE_GCC_PLUGINS=y
build-arm64/.config:CONFIG_GCC_PLUGINS=y
build-arm64/.config:CONFIG_GCC_PLUGIN_LATENT_ENTROPY=y
build-arm64/.config:CONFIG_GCC_PLUGIN_STACKLEAK=y
build-arm64/.config:CONFIG_GCC_PLUGIN_RANDSTRUCT=y

build-arm/.config:CONFIG_HAVE_GCC_PLUGINS=y
build-arm/.config:CONFIG_GCC_PLUGINS=y
build-arm/.config:CONFIG_GCC_PLUGIN_LATENT_ENTROPY=y
build-arm/.config:CONFIG_GCC_PLUGIN_RANDSTRUCT=y

build-mips/.config:CONFIG_HAVE_GCC_PLUGINS=y
build-mips/.config:CONFIG_GCC_PLUGINS=y
build-mips/.config:CONFIG_GCC_PLUGIN_LATENT_ENTROPY=y
build-mips/.config:CONFIG_GCC_PLUGIN_RANDSTRUCT=y

build-powerpc/.config:CONFIG_HAVE_GCC_PLUGINS=y
build-powerpc/.config:CONFIG_GCC_PLUGINS=y
build-powerpc/.config:CONFIG_GCC_PLUGIN_LATENT_ENTROPY=y
build-powerpc/.config:CONFIG_GCC_PLUGIN_RANDSTRUCT=y

build-s390/.config:CONFIG_HAVE_GCC_PLUGINS=y
build-s390/.config:CONFIG_GCC_PLUGINS=y
build-s390/.config:CONFIG_GCC_PLUGIN_LATENT_ENTROPY=y
build-s390/.config:CONFIG_GCC_PLUGIN_RANDSTRUCT=y

build-x86/.config:CONFIG_HAVE_GCC_PLUGINS=y


A header included by each of the plugins, scripts/gcc-plugins/gcc-common.h,
includes a GCC header file called builtins.h that includes <mpc.h>, which 
does not exist anywhere on my system. That causes errors early in the build on all of those architectures.

Version-Release number of selected component (if applicable):
gcc-[each architecture]-linux-gnu 12.1.1

How reproducible:
100%

Steps to Reproduce:
Example for arm 32-bit:

1. make ARCH=arm O=build-arm CROSS_COMPILE=arm-linux-gnu- allmodconfig
2. make ARCH=arm O=build-arm CROSS_COMPILE=arm-linux-gnu- -j 55

Actual results:
For each "GCC plugin", an error like this terminates the make: 

In file included from ../scripts/gcc-plugins/gcc-common.h:95,
                 from ../scripts/gcc-plugins/latent_entropy_plugin.c:78:
/usr/lib/gcc/aarch64-linux-gnu/12/plugin/include/builtins.h:23:10: fatal error: mpc.h: No such file or directory
   23 | #include <mpc.h>
      |          ^~~~~~~
compilation terminated.


Expected results:
no errors

Additional info:
That mpc.h file is provided by the libmpc-devel package.

1. Please add a dependency for the libmpc-devel package from each gcc cross-compiler package that includes a builtins.h file

2. Please investigate whether the native gcc package not having plugins is correct, despite the kernel x86 allmodconfig expecting them by specifying CONFIG_HAVE_GCC_PLUGINS=y