From 20f6500da17859c5dcccf37811a2e96c65017122 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Thu, 15 Nov 2018 18:55:45 -0800
Subject: crypto: resolve target prefix on buggy kernels

We also move to .SECONDARY, since older kernels don't use targets like
that.
---
 src/crypto/Kbuild.include | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'src/crypto')

diff --git a/src/crypto/Kbuild.include b/src/crypto/Kbuild.include
index 5fb9445..4fde2e6 100644
--- a/src/crypto/Kbuild.include
+++ b/src/crypto/Kbuild.include
@@ -41,7 +41,12 @@ quiet_cmd_perlasm = PERLASM $@
       cmd_perlasm = $(PERL) $< > $@
 %.S: %.pl
 	$(call cmd,perlasm)
-targets += $(patsubst %.o,crypto/zinc/%.S,$(zinc-y))
+ifeq ($(wildcard $(src)/compat/compat.h),)
+target_path_prefix := $(srctree)/$(src)
+else
+target_path_prefix := $(src)
+endif
+.SECONDARY: $(addprefix $(target_path_prefix)/,$(patsubst %.o,crypto/zinc/%.S,$(zinc-y)))
 
 wireguard-y += $(addprefix crypto/zinc/,$(zinc-y))
 ccflags-y += -I$(src)/crypto/include
-- 
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