Without linemarkers the error messages are somehwat useless.
To demonstrate I picked a random .dts file file from the arm tree in
linux sources:
DTC ptx-testprj_arm/platform/images/vf610-twr.dtb
Error: /tmp/testprj/platform/state/vf610-twr.dts.tmp:366.1-5 syntax error
FATAL ERROR: Unable to parse input tree

If linemarkers are inserted the error message clearly states in which file
which line caused the error:

DTC ptx-testprj_arm/platform/images/vf610-twr.dtb
Error: 
/tmp/testprj/platform/build-target/linux/arch/arm/boot/dts/vf610-twr.dts:13.1-5 
syntax error
FATAL ERROR: Unable to parse input tree

Signed-off-by: Alexander Stein <[email protected]>
---
 scripts/lib/ptxd_make_dts_dtc.sh | 1 -
 1 file changed, 1 deletion(-)

diff --git a/scripts/lib/ptxd_make_dts_dtc.sh b/scripts/lib/ptxd_make_dts_dtc.sh
index d5e8c59..3ee0897 100644
--- a/scripts/lib/ptxd_make_dts_dtc.sh
+++ b/scripts/lib/ptxd_make_dts_dtc.sh
@@ -41,7 +41,6 @@ ptxd_make_dts_dtb() {
        -Wp,-MD,${tmp_deps} \
        -Wp,-MT,${tmp_dts} \
        -nostdinc \
-       -P \
        -I$(dirname "${dts}") \
        -I${dts_kernel_dir}/arch/${dts_kernel_arch}/boot/dts \
        -I${dts_kernel_dir}/arch/${dts_kernel_arch}/boot/dts/include \
-- 
1.8.5.5


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