From c18744dc6fcc5a0a82338ab218001d0994c79571 Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Wed, 09 Dec 2020 10:21:05 -0500
Subject: ob-buildenv: Set -ffile-prefix-map

---
diff --git a/NEWS b/NEWS
index de2cb16..01165fc 100644
--- a/NEWS
+++ b/NEWS
@@ -8,6 +8,8 @@ Utilities:
   * ob-buildopk now sets the modification time of the "control.tar.gz"
     and "data.tar.gz" files after compression rather than before,
     because BusyBox's gzip doesn't preserve modification times.
+  * ob-buildenv now adds "-ffile-prefix-map" options to CFLAGS and
+    CXXFLAGS.
 
 opkbuild version 4.2.1
 ----------------------
diff --git a/src/ob-buildenv.sh b/src/ob-buildenv.sh
index 6d42851..0bbfdbb 100644
--- a/src/ob-buildenv.sh
+++ b/src/ob-buildenv.sh
@@ -84,6 +84,10 @@ setup_build_flags()
 	if [ -r "${build_flags}" ]; then
 		. "${build_flags}"
 	fi
+	printf "CFLAGS='%s %s'\\n" "${CFLAGS:-}" \
+		"-ffile-prefix-map=${PWD}=."
+	printf "CXXFLAGS='%s %s'\\n" "${CXXFLAGS:-}" \
+		"-ffile-prefix-map=${PWD}=."
 
 	return 0
 }
--
cgit v0.9.1