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authorGravatar Titouan Christophe <titouan.christophe@railnova.eu>2019-01-15 15:15:48 +0100
committerGravatar Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>2019-02-03 20:27:41 +0100
commiteb37deb670c6f9024751fe43eaf1381f2b832a6d (patch)
tree774258f4f8efe1c3097e852a69ae95b81a079746 /linux/linux.mk
parent4c8760bdc501f44dcf77a8ee40349a4387e517ac (diff)
downloadbuildroot-eb37deb670c6f9024751fe43eaf1381f2b832a6d.tar.gz
buildroot-eb37deb670c6f9024751fe43eaf1381f2b832a6d.tar.bz2
linux: add option to enable support for Device Tree overlays
Add an option to compile device trees in Linux with symbol generation such that device tree overlays can be loaded on the target system Signed-off-by: Titouan Christophe <titouan.christophe@railnova.eu> [Arnout: remove "default n" and move setting of LINUX_MAKE_ENV to the place where the rest is set.] Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Diffstat (limited to 'linux/linux.mk')
-rw-r--r--linux/linux.mk4
1 files changed, 4 insertions, 0 deletions
diff --git a/linux/linux.mk b/linux/linux.mk
index 02def89113..62068106e0 100644
--- a/linux/linux.mk
+++ b/linux/linux.mk
@@ -143,6 +143,10 @@ ifeq ($(BR2_TOOLCHAIN_GCC_AT_LEAST_8),y)
LINUX_MAKE_ENV += KCFLAGS=-Wno-attribute-alias
endif
+ifeq ($(BR2_LINUX_KERNEL_DTB_OVERLAY_SUPPORT),y)
+LINUX_MAKE_ENV += DTC_FLAGS=-@
+endif
+
# Get the real Linux version, which tells us where kernel modules are
# going to be installed in the target filesystem.
LINUX_VERSION_PROBED = `$(MAKE) $(LINUX_MAKE_FLAGS) -C $(LINUX_DIR) --no-print-directory -s kernelrelease 2>/dev/null`