Fix issue in make dependency generation.

* Makefile (DEPGEN): We must fold the backslash continuations
before trying to delete the first dependency element,
because if the target name is long, that first element may be
on the following line, and we delete the backslash.

1 files changed, 2 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 0c443a1d..8f907219 100644
--- a/Makefile
+++ b/Makefile
@@ -93,7 +93,8 @@ ABBREV = $(if $(VERBOSE),\
 ABBREV3 = $(if $(VERBOSE),@:,@printf "%s %s -> %s\n" $(1) "$(3)" $(2))
 
 define DEPGEN
-$(V)sed -e '1s/^/DEP_/' -e '1s/: [^ ]\+/ :=/' < $(1) > $(1:.d=.v)
+$(V)sed ':x; /\\$$/ { N; s/\\\n//; tx }' < $(1) | \
+  sed -e '1s/^/DEP_/' -e '1s/: [^ ]\+/ :=/' > $(1:.d=.v)
 endef
 
 define COMPILE_C