Peter Levine b66140c6ad Add support for $KERNEL_{CC,LD,LLVM} variables
Currently, $(CC), $(LD), and $(LLVM) variables aren't passed to kbuild
while building modules.  This causes modules to build with the default
GNU GCC toolchain and prevents experimenting with other toolchains such
as CLANG/LLVM.  It can also lead to build failure if the CFLAGS/LDFLAGS
passed are incompatible with gcc/ld.

Pass $KERNEL_CC, $KERNEL_LD, and $KERNEL_LLVM as $(CC), $(LD), and
$(LLVM), respectively, to kbuild for each that is defined in the
environment.  This should take care of the majority of alternative
toolchain use cases.

Reviewed-by: Damian Szuberski <szuberskidamian@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Peter Levine <plevine457@gmail.com>
Closes #13046
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OpenZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community. This repository contains the code for running OpenZFS on Linux and FreeBSD.

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Official Resources

Installation

Full documentation for installing OpenZFS on your favorite operating system can be found at the Getting Started Page.

Contribute & Develop

We have a separate document with contribution guidelines.

We have a Code of Conduct.

Release

OpenZFS is released under a CDDL license. For more details see the NOTICE, LICENSE and COPYRIGHT files; UCRL-CODE-235197

Supported Kernels

  • The META file contains the officially recognized supported Linux kernel versions.
  • Supported FreeBSD versions are any supported branches and releases starting from 12.2-RELEASE.
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