mirror_zfs/copy-builtin
Brian Behlendorf 06480b2790 Allow c99 when building ZFS in the kernel tree
Commit 4a5d7f82 enabled building c99 out of the kernel tree.
However, when building as part of the kernel different Makefiles
are used and -std=gnu99 must additionially be added there.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #5919
2017-03-27 12:31:15 -07:00

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#!/bin/bash
set -e
usage()
{
echo "usage: $0 <kernel source tree>" >&2
exit 1
}
[ "$#" -eq 1 ] || usage
KERNEL_DIR="$(readlink --canonicalize-existing "$1")"
MODULES=()
for MODULE_DIR in module/*
do
[ -d "$MODULE_DIR" ] || continue
MODULES+=("${MODULE_DIR##*/}")
done
if ! [ -e 'zfs_config.h' ]
then
echo >&2
echo " $0: you did not run configure, or you're not in the ZFS source directory." >&2
echo " $0: run configure with --with-linux=$KERNEL_DIR and --enable-linux-builtin." >&2
echo >&2
exit 1
fi
make clean || true
rm -rf "$KERNEL_DIR/include/zfs" "$KERNEL_DIR/fs/zfs"
cp --recursive include "$KERNEL_DIR/include/zfs"
cp --recursive module "$KERNEL_DIR/fs/zfs"
cp zfs_config.h "$KERNEL_DIR/"
for MODULE in "${MODULES[@]}"
do
sed -i.bak '/obj =/d' "$KERNEL_DIR/fs/zfs/$MODULE/Makefile"
sed -i.bak '/src =/d' "$KERNEL_DIR/fs/zfs/$MODULE/Makefile"
done
cat > "$KERNEL_DIR/fs/zfs/Kconfig" <<"EOF"
config ZFS
tristate "ZFS filesystem support"
depends on SPL
depends on EFI_PARTITION
select ZLIB_INFLATE
select ZLIB_DEFLATE
help
This is the ZFS filesystem from the ZFS On Linux project.
See http://zfsonlinux.org/
To compile this file system support as a module, choose M here.
If unsure, say N.
EOF
{
cat <<-"EOF"
ZFS_MODULE_CFLAGS = -I$(srctree)/include/zfs
ZFS_MODULE_CFLAGS += -I$(srctree)/include/spl
ZFS_MODULE_CFLAGS += -include $(srctree)/spl_config.h
ZFS_MODULE_CFLAGS += -include $(srctree)/zfs_config.h
ZFS_MODULE_CLFAGS += -std=gnu99
export ZFS_MODULE_CFLAGS
obj-$(CONFIG_ZFS) :=
EOF
for MODULE in "${MODULES[@]}"
do
echo 'obj-$(CONFIG_ZFS) += ' "$MODULE/"
done
} > "$KERNEL_DIR/fs/zfs/Kbuild"
add_after()
{
local FILE="$1"
local MARKER="$2"
local NEW="$3"
local LINE
while IFS='' read -r LINE
do
echo "$LINE"
if [ -n "$MARKER" -a "$LINE" = "$MARKER" ]
then
echo "$NEW"
MARKER=''
if IFS='' read -r LINE
then
[ "$LINE" != "$NEW" ] && echo "$LINE"
fi
fi
done < "$FILE" > "$FILE.new"
mv "$FILE.new" "$FILE"
}
add_after "$KERNEL_DIR/fs/Kconfig" 'if BLOCK' 'source "fs/zfs/Kconfig"'
add_after "$KERNEL_DIR/fs/Makefile" 'endif' 'obj-$(CONFIG_ZFS) += zfs/'
echo >&2
echo " $0: done." >&2
echo " $0: now you can build the kernel with ZFS support." >&2
echo " $0: make sure you enable ZFS support (CONFIG_ZFS) before building." >&2
echo >&2