linux-kernel - [PATCH] crypto: arm64/aes: remove Makefile hack

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Date:   Tue,  1 Aug 2023 19:11:46 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Herbert Xu <herbert@...dor.apana.org.au>,
        linux-crypto@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, Ard Biesheuvel <ardb@...nel.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        "David S. Miller" <davem@...emloft.net>,
        Will Deacon <will@...nel.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH] crypto: arm64/aes: remove Makefile hack

Do it more simiply. This also fixes single target builds.

[before]

  $ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- arch/arm64/crypto/aes-glue-ce.i
    [snip]
  make[4]: *** No rule to make target 'arch/arm64/crypto/aes-glue-ce.i'.  Stop.

[after]

  $ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- arch/arm64/crypto/aes-glue-ce.i
    [snip]
    CPP     arch/arm64/crypto/aes-glue-ce.i

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 arch/arm64/crypto/Makefile        | 5 -----
 arch/arm64/crypto/aes-glue-ce.c   | 2 ++
 arch/arm64/crypto/aes-glue-neon.c | 1 +
 3 files changed, 3 insertions(+), 5 deletions(-)
 create mode 100644 arch/arm64/crypto/aes-glue-ce.c
 create mode 100644 arch/arm64/crypto/aes-glue-neon.c

diff --git a/arch/arm64/crypto/Makefile b/arch/arm64/crypto/Makefile
index 4818e204c2ac..fbe64dce66e0 100644
--- a/arch/arm64/crypto/Makefile
+++ b/arch/arm64/crypto/Makefile
@@ -81,11 +81,6 @@ aes-arm64-y := aes-cipher-core.o aes-cipher-glue.o
 obj-$(CONFIG_CRYPTO_AES_ARM64_BS) += aes-neon-bs.o
 aes-neon-bs-y := aes-neonbs-core.o aes-neonbs-glue.o
 
-CFLAGS_aes-glue-ce.o	:= -DUSE_V8_CRYPTO_EXTENSIONS
-
-$(obj)/aes-glue-%.o: $(src)/aes-glue.c FORCE
-	$(call if_changed_rule,cc_o_c)
-
 quiet_cmd_perlasm = PERLASM $@
       cmd_perlasm = $(PERL) $(<) void $(@)
 
diff --git a/arch/arm64/crypto/aes-glue-ce.c b/arch/arm64/crypto/aes-glue-ce.c
new file mode 100644
index 000000000000..7d309ceeddf3
--- /dev/null
+++ b/arch/arm64/crypto/aes-glue-ce.c
@@ -0,0 +1,2 @@
+#define USE_V8_CRYPTO_EXTENSIONS
+#include "aes-glue.c"
diff --git a/arch/arm64/crypto/aes-glue-neon.c b/arch/arm64/crypto/aes-glue-neon.c
new file mode 100644
index 000000000000..8ba046321064
--- /dev/null
+++ b/arch/arm64/crypto/aes-glue-neon.c
@@ -0,0 +1 @@
+#include "aes-glue.c"
-- 
2.39.2