[lttng-modules.git] / scripts / built-in.sh

#!/bin/bash
# SPDX-License-Identifier: (GPL-2.0-only OR LGPL-2.1-only)

set -e

usage() {
	echo "usage: $0 <kernel source tree>" >&2
	exit 1
}

[ "$#" -eq 1 ] || usage
KERNEL_DIR="$(readlink --canonicalize-existing "$1")"

# Symlink the lttng-modules directory in the kernel source
ln -sf "$(pwd)" "${KERNEL_DIR}/lttng"

# Graft ourself to the kernel build system
echo 'source "lttng/src/Kconfig"' >> "${KERNEL_DIR}/Kconfig"

# In kernel v6.1, subdirectories were moved to Kbuild
if grep -qE '^obj-y[[:space:]]+\+= kernel/' "${KERNEL_DIR}/Kbuild"; then
	echo 'obj-y += lttng/' >> "${KERNEL_DIR}/Kbuild"
else
	sed -i 's#+= kernel/#+= kernel/ lttng/#' "${KERNEL_DIR}/Makefile"
fi

echo >&2
echo "    $0: done." >&2
echo "    $0: now you can build the kernel with LTTng support." >&2
echo "    $0: make sure you enable it (CONFIG_LTTNG) before building." >&2
echo >&2
Commit	Line	Data
f59ec0be	1	#!/bin/bash
b7cdc182	2	# SPDX-License-Identifier: (GPL-2.0-only OR LGPL-2.1-only)
f59ec0be MJ	3
	4	set -e
	5
	6	usage() {
	7	echo "usage: $0 <kernel source tree>" >&2
	8	exit 1
	9	}
	10
	11	[ "$#" -eq 1 ] \|\| usage
	12	KERNEL_DIR="$(readlink --canonicalize-existing "$1")"
	13
	14	# Symlink the lttng-modules directory in the kernel source
	15	ln -sf "$(pwd)" "${KERNEL_DIR}/lttng"
	16
	17	# Graft ourself to the kernel build system
25fd0688	18	echo 'source "lttng/src/Kconfig"' >> "${KERNEL_DIR}/Kconfig"
78d67057 MJ	19
	20	# In kernel v6.1, subdirectories were moved to Kbuild
	21	if grep -qE '^obj-y[[:space:]]+\+= kernel/' "${KERNEL_DIR}/Kbuild"; then
	22	echo 'obj-y += lttng/' >> "${KERNEL_DIR}/Kbuild"
	23	else
	24	sed -i 's#+= kernel/#+= kernel/ lttng/#' "${KERNEL_DIR}/Makefile"
	25	fi
f59ec0be MJ	26
	27	echo >&2
	28	echo " $0: done." >&2
	29	echo " $0: now you can build the kernel with LTTng support." >&2
	30	echo " $0: make sure you enable it (CONFIG_LTTNG) before building." >&2
	31	echo >&2