Re: [PATCH v5 1/2] cache.h: eliminate SHA-1 deprecation warnings on Mac OS X

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On 2013-05-15 09.11, David Aguilar wrote:
> Mac OS X 10.8 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 CommonCrytpo SHA-1
> functions for SHA1_Init(), SHA1_Update(), and SHA1_Final().
> 
> COMMON_DIGEST_FOR_OPENSSL is defined to enable the OpenSSL
> compatibility macros in CommonDigest.h.
> 
> Add a NO_APPLE_COMMON_CRYPTO option to the Makefile to allow
> users to opt out of using this library.  When defined, Git will
> use OpenSSL instead.
> 
> Helped-by: Eric Sunshine <sunshine@xxxxxxxxxxxxxx>
> Signed-off-by: David Aguilar <davvid@xxxxxxxxx>
> ---
> Both of these are replacement patches "pu".
> 
> Changes from last time:
> 
> It now uses a single APPLE_COMMON_CRYPTO definition.
> Users can now opt-out by setting NO_APPLE_COMMON_CRYPTO.
> 
>  Makefile | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/Makefile b/Makefile
> index f698c1a..8309c41 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -137,6 +137,10 @@ all::
>  # specify your own (or DarwinPort's) include directories and
>  # library directories by defining CFLAGS and LDFLAGS appropriately.
>  #
> +# Define NO_APPLE_COMMON_CRYPTO if you are building on Darwin/Mac OS X
> +# and do not want to use Apple's CommonCrypto library.  This allows you
> +# to provide your own OpenSSL library, for example from MacPorts.
> +#
>  # Define BLK_SHA1 environment variable to make use of the bundled
>  # optimized C SHA1 routine.
>  #
> @@ -1054,6 +1058,9 @@ ifeq ($(uname_S),Darwin)
>  			BASIC_LDFLAGS += -L/opt/local/lib
>  		endif
>  	endif
> +	ifndef NO_APPLE_COMMON_CRYPTO
> +		APPLE_COMMON_CRYPTO = YesPlease
> +	endif
>  	NO_REGEX = YesPlease
>  	PTHREAD_LIBS =
>  endif
> @@ -1389,10 +1396,16 @@ ifdef PPC_SHA1
>  	LIB_OBJS += ppc/sha1.o ppc/sha1ppc.o
>  	LIB_H += ppc/sha1.h
>  else
> +ifdef APPLE_COMMON_CRYPTO
> +	BASIC_CFLAGS += -DCOMMON_DIGEST_FOR_OPENSSL
> +	SHA1_HEADER = <CommonCrypto/CommonDigest.h>

Would it make sense to replace APPLE_COMMON_CRYPTO
with COMMON_DIGEST_FOR_OPENSSL ?

In the spirit of other Makefile-defines becoming Compiler defines,
a random picked example:
ifdef NO_STRTOULL
	COMPAT_CFLAGS += -DNO_STRTOULL
endif

/Torsten
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