diff --git a/Makefile.in b/Makefile.in
index c97130a23389..2f136839c35e 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -321,6 +321,7 @@ BASE_TARGET_EXPORTS = \
 	RANLIB="$(RANLIB_FOR_TARGET)"; export RANLIB; \
 	READELF="$(READELF_FOR_TARGET)"; export READELF; \
 	STRIP="$(STRIP_FOR_TARGET)"; export STRIP; \
+	SYSROOT_CFLAGS_FOR_TARGET="$(SYSROOT_CFLAGS_FOR_TARGET)"; export SYSROOT_CFLAGS_FOR_TARGET; \
 	WINDRES="$(WINDRES_FOR_TARGET)"; export WINDRES; \
 	WINDMC="$(WINDMC_FOR_TARGET)"; export WINDMC; \
 @if gcc-bootstrap
diff --git a/Makefile.tpl b/Makefile.tpl
index 36fa20950d4a..5872dd03f2c7 100644
--- a/Makefile.tpl
+++ b/Makefile.tpl
@@ -324,6 +324,7 @@ BASE_TARGET_EXPORTS = \
 	RANLIB="$(RANLIB_FOR_TARGET)"; export RANLIB; \
 	READELF="$(READELF_FOR_TARGET)"; export READELF; \
 	STRIP="$(STRIP_FOR_TARGET)"; export STRIP; \
+	SYSROOT_CFLAGS_FOR_TARGET="$(SYSROOT_CFLAGS_FOR_TARGET)"; export SYSROOT_CFLAGS_FOR_TARGET; \
 	WINDRES="$(WINDRES_FOR_TARGET)"; export WINDRES; \
 	WINDMC="$(WINDMC_FOR_TARGET)"; export WINDMC; \
 @if gcc-bootstrap