Re: [PATCH v3 3/3] cache.h: eliminate SHA-1 deprecation warnings on OS X 10.8

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On Mon, May 13, 2013 at 3:20 AM, David Aguilar <davvid@xxxxxxxxx> wrote:
> Mac OS X Mountain Lion prints warnings when building git:
>
>         warning: 'SHA1_Init' is deprecated
>         (declared at /usr/include/openssl/sha.h:121)
>
> Silence the warnings by using the Common Digest SHA-1
> functions for SHA1_Init(), SHA1_Update(), and SHA1_Final().
>
> Add a COMMON_DIGEST_SHA1 option to the Makefile to allow
> choosing this implementation and define it by default on Darwin.
>
> Define COMMON_DIGEST_FOR_SHA1 to enable the OpenSSL compatibility
> macros in CommonDigest.h.
>
> Helped-by: Eric Sunshine <sunshine@xxxxxxxxxxxxxx>
> Signed-off-by: David Aguilar <davvid@xxxxxxxxx>
> ---
> Here's a replacement patch for what's in pu.
> This version uses the built-in #defines and can thus avoid
> touching cache.h.
>
>  Makefile | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/Makefile b/Makefile
> index 25282b4..9d174b9 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1055,6 +1055,7 @@ ifeq ($(uname_S),Darwin)
>                 endif
>         endif
>         COMMON_DIGEST_HMAC = YesPlease
> +       COMMON_DIGEST_SHA1 = YesPlease
>         NO_REGEX = YesPlease
>         PTHREAD_LIBS =
>  endif
> @@ -1390,10 +1391,15 @@ ifdef PPC_SHA1
>         LIB_OBJS += ppc/sha1.o ppc/sha1ppc.o
>         LIB_H += ppc/sha1.h
>  else
> +ifdef COMMON_DIGEST_SHA1
> +       BASIC_CFLAGS += -DCOMMON_DIGEST_FOR_SHA1=1

This is incorrect. As noted in my previous email, you need to define
COMMON_DIGEST_FOR_OPENSSL, not COMMON_DIGEST_FOR_SHA1, in order for
CommonDigest.h to provide the OpenSSL defines magically. Thus:

s/COMMON_DIGEST_FOR_SHA1=1/COMMON_DIGEST_FOR_OPENSSL/

> +       SHA1_HEADER = <CommonCrypto/CommonDigest.h>
> +else
>         SHA1_HEADER = <openssl/sha.h>
>         EXTLIBS += $(LIB_4_CRYPTO)
>  endif
>  endif
> +endif
>
>  ifdef COMMON_DIGEST_HMAC
>         BASIC_CFLAGS += -DCOMMON_DIGEST_FOR_HMAC=1
> --
> 1.8.3.rc1.47.g1b7707e
>
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