diff options
| -rwxr-xr-x | scripts/update-linux-headers.sh | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/scripts/update-linux-headers.sh b/scripts/update-linux-headers.sh index fea4d6eb65..fe850763c5 100755 --- a/scripts/update-linux-headers.sh +++ b/scripts/update-linux-headers.sh @@ -9,6 +9,22 @@ # # This work is licensed under the terms of the GNU GPL version 2. # See the COPYING file in the top-level directory. +# +# The script will copy the headers into two target folders: +# +# - linux-headers/ for files that are required for compiling for a +# Linux host. Generally we have these so we can use kernel structs +# and defines that are more recent than the headers that might be +# installed on the host system. Usually this script can do simple +# file copies for these headers. +# +# - include/standard-headers/ for files that are used for guest +# device emulation and are required on all hosts. For instance, we +# get our definitions of the virtio structures from the Linux +# kernel headers, but we need those definitions regardless of which +# host OS we are building for. This script has to be careful to +# sanitize the headers to remove any use of Linux-specifics such as +# types like "__u64". This work is done in the cp_portable function. tmpdir=$(mktemp -d) linux="$1" |