From 622cef6f81a297b51728fd47c9ae8986bd5a4c76 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Sun, 16 Dec 2018 00:50:39 +0100
Subject: makefile: use immediate expansion and use correct template patterns

---
 src/crypto/Kbuild.include | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

(limited to 'src/crypto/Kbuild.include')

diff --git a/src/crypto/Kbuild.include b/src/crypto/Kbuild.include
index e93f3af..460684d 100644
--- a/src/crypto/Kbuild.include
+++ b/src/crypto/Kbuild.include
@@ -39,13 +39,13 @@ zinc-$(CONFIG_ZINC_ARCH_ARM) += curve25519/curve25519-arm.o
 
 quiet_cmd_perlasm = PERLASM $@
       cmd_perlasm = $(PERL) $< > $@
-%.S: %.pl
-	$(call cmd,perlasm)
-kbuild-dir ?= $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
-targets += $(patsubst $(kbuild-dir)/%.pl,%.S,$(wildcard $(patsubst %.o,$(kbuild-dir)/crypto/zinc/%.pl,$(zinc-y) $(zinc-m) $(zinc-))))
+$(obj)/%.S: $(src)/%.pl FORCE
+	$(call if_changed,perlasm)
+kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
+targets := $(patsubst $(kbuild-dir)/%.pl,%.S,$(wildcard $(patsubst %.o,$(kbuild-dir)/crypto/zinc/%.pl,$(zinc-y) $(zinc-m) $(zinc-))))
 
-# Old kernels don't have targets, so use SECONDARY manually, which requires the full path
-.SECONDARY: $(addprefix $(kbuild-dir)/,$(targets))
+# Old kernels don't set this, which causes trouble.
+.SECONDARY:
 
 wireguard-y += $(addprefix crypto/zinc/,$(zinc-y))
 ccflags-y += -I$(src)/crypto/include
-- 
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