When building both kernel and kernel-headers from the same folder the
kernel-headers currently get built inside the tree while kernel is built
outside. This changes kernel-headers to also get built out-of-tree with
OOT=KEEP so as not to break some kernel builds.

Signed-off-by: Sandy Patterson <[email protected]>
---
 rules/kernel-header.make | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rules/kernel-header.make b/rules/kernel-header.make
index c173eb74b..6f540409f 100644
--- a/rules/kernel-header.make
+++ b/rules/kernel-header.make
@@ -25,8 +25,10 @@ KERNEL_HEADER_URL            := 
https://git.kernel.org/torvalds/t/$(KERNEL_HEADER).$(KERNE
 endif
 KERNEL_HEADER_SOURCE           := 
$(SRCDIR)/linux-$(KERNEL_HEADER_VERSION).$(KERNEL_HEADER_SUFFIX)
 KERNEL_HEADER_DIR              := 
$(BUILDDIR)/kernel-header-$(KERNEL_HEADER_VERSION)
+KERNEL_HEADER_BUILD_DIR        := $(KERNEL_HEADER_DIR)-build
 KERNEL_HEADER_PKGDIR           := 
$(PKGDIR)/kernel-header-$(KERNEL_HEADER_VERSION)
 KERNEL_HEADER_LICENSE          := GPL-2.0-only
+KERNEL_HEADER_BUILD_OOT        := KEEP
 
 # ----------------------------------------------------------------------------
 # Prepare
@@ -37,6 +39,7 @@ KERNEL_HEADER_PATH            := PATH=$(CROSS_PATH)
 KERNEL_HEADER_CONF_TOOL                := NO
 KERNEL_HEADER_MAKE_OPT         := \
        V=$(PTXDIST_VERBOSE) \
+       O=$(KERNEL_HEADER_BUILD_DIR) \
        HOSTCC=$(HOSTCC) \
        ARCH=$(GENERIC_KERNEL_ARCH) \
        CROSS_COMPILE=$(PTXCONF_COMPILER_PREFIX)
-- 
2.20.1


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