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			109 lines
		
	
	
		
			4.1 KiB
		
	
	
	
		
			Plaintext
		
	
	
			
		
		
	
	
			109 lines
		
	
	
		
			4.1 KiB
		
	
	
	
		
			Plaintext
		
	
	
dnl Autoconf macros for libgcrypt
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dnl       Copyright (C) 2002, 2004 Free Software Foundation, Inc.
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dnl
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dnl This file is free software; as a special exception the author gives
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dnl unlimited permission to copy and/or distribute it, with or without
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dnl modifications, as long as this notice is preserved.
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dnl
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dnl This file is distributed in the hope that it will be useful, but
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dnl WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
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dnl implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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dnl AM_PATH_LIBGCRYPT([MINIMUM-VERSION,
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dnl                   [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
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dnl Test for libgcrypt and define LIBGCRYPT_CFLAGS and LIBGCRYPT_LIBS.
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dnl MINIMUN-VERSION is a string with the version number optionalliy prefixed
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dnl with the API version to also check the API compatibility. Example:
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dnl a MINIMUN-VERSION of 1:1.2.5 won't pass the test unless the installed 
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dnl version of libgcrypt is at least 1.2.5 *and* the API number is 1.  Using
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dnl this features allows to prevent build against newer versions of libgcrypt
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dnl with a changed API.
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dnl
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AC_DEFUN([AM_PATH_LIBGCRYPT],
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[ AC_ARG_WITH(libgcrypt-prefix,
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            AC_HELP_STRING([--with-libgcrypt-prefix=PFX],
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                           [prefix where LIBGCRYPT is installed (optional)]),
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     libgcrypt_config_prefix="$withval", libgcrypt_config_prefix="")
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  if test x$libgcrypt_config_prefix != x ; then
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     if test x${LIBGCRYPT_CONFIG+set} != xset ; then
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        LIBGCRYPT_CONFIG=$libgcrypt_config_prefix/bin/libgcrypt-config
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     fi
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  fi
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  AC_PATH_PROG(LIBGCRYPT_CONFIG, libgcrypt-config, no)
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  tmp=ifelse([$1], ,1:1.2.0,$1)
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  if echo "$tmp" | grep ':' >/dev/null 2>/dev/null ; then
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     req_libgcrypt_api=`echo "$tmp"     | sed 's/\(.*\):\(.*\)/\1/'`
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     min_libgcrypt_version=`echo "$tmp" | sed 's/\(.*\):\(.*\)/\2/'`
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  else
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     req_libgcrypt_api=0
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     min_libgcrypt_version="$tmp"
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  fi
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  AC_MSG_CHECKING(for LIBGCRYPT - version >= $min_libgcrypt_version)
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  ok=no
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  if test "$LIBGCRYPT_CONFIG" != "no" ; then
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    req_major=`echo $min_libgcrypt_version | \
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               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
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    req_minor=`echo $min_libgcrypt_version | \
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               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`
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    req_micro=`echo $min_libgcrypt_version | \
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               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\)/\3/'`
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    libgcrypt_config_version=`$LIBGCRYPT_CONFIG --version`
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    major=`echo $libgcrypt_config_version | \
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               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
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    minor=`echo $libgcrypt_config_version | \
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               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`
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    micro=`echo $libgcrypt_config_version | \
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               sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\.\([[0-9]]*\).*/\3/'`
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    if test "$major" -gt "$req_major"; then
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        ok=yes
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    else 
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        if test "$major" -eq "$req_major"; then
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            if test "$minor" -gt "$req_minor"; then
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               ok=yes
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            else
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               if test "$minor" -eq "$req_minor"; then
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                   if test "$micro" -ge "$req_micro"; then
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                     ok=yes
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                   fi
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               fi
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            fi
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        fi
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    fi
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  fi
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  if test $ok = yes; then
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    AC_MSG_RESULT([yes ($libgcrypt_config_version)])
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  else
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    AC_MSG_RESULT(no)
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  fi
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  if test $ok = yes; then
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     # If we have a recent libgcrypt, we should also check that the
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     # API is compatible
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     if test "$req_libgcrypt_api" -gt 0 ; then
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        tmp=`$LIBGCRYPT_CONFIG --api-version 2>/dev/null || echo 0`
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        if test "$tmp" -gt 0 ; then
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           AC_MSG_CHECKING([LIBGCRYPT API version])
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           if test "$req_libgcrypt_api" -eq "$tmp" ; then
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             AC_MSG_RESULT([okay])
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           else
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             ok=no
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             AC_MSG_RESULT([does not match. want=$req_libgcrypt_api got=$tmp])
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           fi
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        fi
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     fi
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  fi
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  if test $ok = yes; then
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    LIBGCRYPT_CFLAGS=`$LIBGCRYPT_CONFIG --cflags`
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    LIBGCRYPT_LIBS=`$LIBGCRYPT_CONFIG --libs`
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    ifelse([$2], , :, [$2])
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  else
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    LIBGCRYPT_CFLAGS=""
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    LIBGCRYPT_LIBS=""
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    ifelse([$3], , :, [$3])
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  fi
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  AC_SUBST(LIBGCRYPT_CFLAGS)
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  AC_SUBST(LIBGCRYPT_LIBS)
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])
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