No rule to make target 'stddef.h' while building driver

[boomerhackr]

I was trying to install the drivers for panda wifi adapter using this guide. However when I ran "make" to build the driver, it gave me the following error:

[krinn]

I would say first thing to look at is, do you really miss the file /usr/lib/gcc/x86_64-pc-linux-gnu/9.3.0/include/stddef.h ?
It's standard in gcc, missing it mean your gcc is sick, no idea why you don't have it if it's your next question

[Hu]

Please post the name, version, and full output of the ebuild that produced this error. (You mention running make directly, which is odd. Are you trying to build this outside of Portage?) The failure should have showed a path to the build.log, which would contain all this information. If the output is long, put it on a pastebin and link to it here.

What is the output of emerge --pretend --verbose sys-devel/gcc?

As a tip, this guide is not good text for a link. Instead, you should describe the nature of the underlying guide.

[boomerhackr]

No I do not have "/usr/lib/gcc/x86_64-pc-linux-gnu/9.3.0/include/stddef.h" The directory "/usr/lib/gcc/x86_64-pc-linux-gnu/9.3.0/" does not exist. I did not use portage to install, I simply installed a tarball, decompressed it, and ran the "make" command. Here is the output of "emerge --pretend --verbose sys-devel/gcc":

[krinn]

then you are using the wrong computer version, must be you forget to run eselect gcc and pickup the version 10 you use

[boomerhackr]

I already have gentoo version 10.2.0 set on eselect and "gcc --version" outputs 10.2.0. I am confused. Should I emerge gcc again?
_________________
I'd just like to interject for a moment. What you're referring to as Linux,
is in fact, GNU/Linux, or as I've recently taken to calling it, GNU plus Linux.

[Hu]

No, you should not rebuild gcc. You removed gcc-9.3.0, and with it all of its headers. Personally, I would not remove 9.3.0 quite so soon after installing 10.2.0, but that is not relevant to your problem. Your problem is that you are using outdated dependency information from a kernel build (which it looks like you may have done as root) that was done when gcc-9.3.0 was current. Clean out the dependency information and try again.

[boomerhackr]

How can I clean out the dependency information?
_________________
I'd just like to interject for a moment. What you're referring to as Linux,
is in fact, GNU/Linux, or as I've recently taken to calling it, GNU plus Linux.

[jburns]

Rebuild the kernel.

[boomerhackr]

I went into /usr/src/linux and ran "make" however it gives me the same "missing stddef.h" error.
_________________
I'd just like to interject for a moment. What you're referring to as Linux,
is in fact, GNU/Linux, or as I've recently taken to calling it, GNU plus Linux.

[pietinger]

[krinn]

I'll show you mine to help, this is what you should check
1/ is gcc set to the 10 in the file config...
2/ is the file x86_... have the right paths in it?

[RayDude]

For anyone who finds this in the future. I just got this error message compiling gentoo-sources-6.1.9 after upgrading to gcc-12.

I had to cp .config up a level to save it:

cd /usr/src/linux
cp .config ../6.1.9.config

Then clean the distro:

make distclean

Copy the config back:

cp ../6.1.9.config .config

and then it would make:

make -j16
_________________
Some day there will only be free software.

[Hu]

I believe a make clean, as suggested earlier, would suffice. make clean, unlike make distclean, will not remove the .config file, so it is simpler to use.