109 lines
3.7 KiB
Text
109 lines
3.7 KiB
Text
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# ===========================================================================
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# https://www.gnu.org/software/autoconf-archive/ax_lib_gcrypt.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_LIB_GCRYPT([yes|no|auto])
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#
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# DESCRIPTION
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#
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# Searches for the 'gcrypt' library with the --with... option.
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#
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# If found, define HAVE_GCRYPT and macro GCRYPT_LIBS and GCRYPT_CFLAGS.
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# Also defines GCRYPT_WITH_<algo> for the algorithms found available.
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# Possible algorithms are: AES ARCFOUR BLOWFISH CAST5 DES IDEA RFC2268
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# SERPENT TWOFISH CRC HAVAL MD2 MD4 MD5 RMD160 SHA0 SHA1 SHA224 SHA256
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# SHA384 SHA512 TIGER WHIRLPOOL DSA ELGAMAL RSA
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#
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# The argument is used if no --with...-gcrypt option is set. Value "yes"
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# requires the configuration by default. Value "no" does not require it by
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# default. Value "auto" configures the library only if available.
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#
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# See also AX_LIB_BEECRYPT and AX_LIB_CRYPTO.
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#
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# LICENSE
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#
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# Copyright (c) 2009 Fabien Coelho <autoconf.archive@coelho.net>
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#
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# Copying and distribution of this file, with or without modification, are
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# permitted in any medium without royalty provided the copyright notice
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# and this notice are preserved. This file is offered as-is, without any
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# warranty.
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#serial 12
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# AX_CHECK_GCRYPT_ALGO([algo])
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# generate convenient defines for each algorithm
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AC_DEFUN([AX_CHECK_GCRYPT_ALGO],[
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AC_REQUIRE([AC_PROG_EGREP])
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AC_MSG_CHECKING([for $1 in gcrypt])
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if echo $gcrypt_algos | $EGREP -i ":.*( $1 | $1$)" > /dev/null ; then
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AC_DEFINE([GCRYPT_WITH_$1],[1],[Algorithm $1 in gcrypt library])
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AC_MSG_RESULT([yes])
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else
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AC_MSG_RESULT([no])
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fi
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])
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# AX_LIB_GCRYPT([yes|no|auto])
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AC_DEFUN([AX_LIB_GCRYPT],[
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AC_MSG_CHECKING([whether gcrypt is enabled])
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AC_ARG_WITH([gcrypt],[ --with-gcrypt require gcrypt library
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--without-gcrypt disable gcrypt library],[
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AC_MSG_RESULT([$withval])
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ac_with_gcrypt=$withval
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],[
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AC_MSG_RESULT($1)
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ac_with_gcrypt=$1
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])
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if test "$ac_with_gcrypt" = "yes" -o "$ac_with_gcrypt" = "auto" ; then
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AM_PATH_LIBGCRYPT([1.2.0],[
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AC_DEFINE([HAVE_GCRYPT],[1],[Gcrypt library is available])
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HAVE_GCRYPT=1
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# checking for available algorithms...
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gcrypt_algos=`$LIBGCRYPT_CONFIG --algorithms`
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# ciphers
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# this does not work with a "for" loop: nothing generated in config.h:-(
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AX_CHECK_GCRYPT_ALGO([AES])
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AX_CHECK_GCRYPT_ALGO([ARCFOUR])
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AX_CHECK_GCRYPT_ALGO([BLOWFISH])
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AX_CHECK_GCRYPT_ALGO([CAST5])
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AX_CHECK_GCRYPT_ALGO([DES])
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AX_CHECK_GCRYPT_ALGO([IDEA])
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AX_CHECK_GCRYPT_ALGO([RFC2268])
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AX_CHECK_GCRYPT_ALGO([SERPENT])
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AX_CHECK_GCRYPT_ALGO([TWOFISH])
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# digests
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AX_CHECK_GCRYPT_ALGO([CRC])
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AX_CHECK_GCRYPT_ALGO([HAVAL])
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AX_CHECK_GCRYPT_ALGO([MD2])
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AX_CHECK_GCRYPT_ALGO([MD4])
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AX_CHECK_GCRYPT_ALGO([MD5])
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AX_CHECK_GCRYPT_ALGO([RMD160])
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AX_CHECK_GCRYPT_ALGO([SHA0])
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AX_CHECK_GCRYPT_ALGO([SHA1])
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AX_CHECK_GCRYPT_ALGO([SHA224])
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AX_CHECK_GCRYPT_ALGO([SHA256])
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AX_CHECK_GCRYPT_ALGO([SHA384])
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AX_CHECK_GCRYPT_ALGO([SHA512])
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AX_CHECK_GCRYPT_ALGO([TIGER])
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AX_CHECK_GCRYPT_ALGO([WHIRLPOOL])
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# others
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AX_CHECK_GCRYPT_ALGO([DSA])
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AX_CHECK_GCRYPT_ALGO([ELGAMAL])
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AX_CHECK_GCRYPT_ALGO([RSA])
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# conclusion
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GCRYPT_CFLAGS=`$LIBGCRYPT_CONFIG --cflags`
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GCRYPT_LIBS=`$LIBGCRYPT_CONFIG --libs`
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AC_SUBST(GCRYPT_CFLAGS)
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AC_SUBST(GCRYPT_LIBS)
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],[
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# complain only if explicitly required
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if test "$ac_with_gcrypt" = "yes" ; then
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AC_MSG_ERROR([cannot configure required gcrypt library])
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fi
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])
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fi
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])
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