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	In order to do this and provide good feedback, a new macro was created (AST_EXT_LIB_EXTRA_CHECK) which does the normal check and path setups for the library then compiles, links and runs a supplied code fragment to do the final determination. In this case, the final code fragment compares UNBOUND_VERSION_MAJOR and UNBOUND_VERSION_MINOR to determine if they're greater than or equal to 1.5. Since we require version 1.5, some code in res_resolver_unbound was also simplified. ASTERISK-28045 Reported by: Samuel Galarneau Change-Id: Iee94ad543cd6f8b118df8c4c7afd9c4e2ca1fa72
		
			
				
	
	
		
			308 lines
		
	
	
		
			8.7 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
			
		
		
	
	
			308 lines
		
	
	
		
			8.7 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
# Helper function to setup variables for a package.
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# $1 -> the package name. Used in configure.ac and also as a prefix
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#	for the variables ($1_DIR, $1_INCLUDE, $1_LIB) in makeopts
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# $3 ->	option name, used in --with-$3 or --without-$3 when calling configure.
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# $2 and $4 are just text describing the package (short and long form)
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# AST_EXT_LIB_SETUP([package], [short description], [configure option name], [long description])
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AC_DEFUN([AST_EXT_LIB_SETUP],
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[
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    $1_DESCRIP="$2"
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    $1_OPTION="$3"
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    PBX_$1=0
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    AC_ARG_WITH([$3], AS_HELP_STRING([--with-$3=PATH],[use $2 files in PATH$4]),
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    [
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	case ${withval} in
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	n|no)
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	USE_$1=no
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	# -1 is a magic value used by menuselect to know that the package
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	# was disabled, other than 'not found'
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	PBX_$1=-1
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	;;
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	y|ye|yes)
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	ac_mandatory_list="${ac_mandatory_list} $1"
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	;;
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	*)
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	$1_DIR="${withval}"
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	ac_mandatory_list="${ac_mandatory_list} $1"
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	;;
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	esac
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    ])
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    AH_TEMPLATE(m4_bpatsubst([[HAVE_$1]], [(.*)]), [Define to 1 if you have the $2 library.])
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    AC_SUBST([$1_LIB])
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    AC_SUBST([$1_INCLUDE])
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    AC_SUBST([$1_DIR])
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    AC_SUBST([PBX_$1])
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])
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# AST_OPTION_ONLY([option name], [option variable], [option description], [default value])
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AC_DEFUN([AST_OPTION_ONLY],
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[
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AC_ARG_WITH([$1], AS_HELP_STRING([--with-$1=PATH], [use $3 in PATH]),
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	[
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	case ${withval} in
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	n|no)
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		unset $2
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		;;
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	*)
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		if test "x${withval}" = "x"; then
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			m4_ifval($4, [$2="$4"], [:])
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		else
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			$2="${withval}"
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		fi
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		;;
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	esac
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	],
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	[m4_ifval($4, [$2="$4"], [:])])
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AC_SUBST($2)
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])
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# Setup required dependent package
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# AST_EXT_LIB_SETUP_DEPENDENT([dependent package symbol name], [dependent package friendly name], [master package symbol name], [master package name])
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AC_DEFUN([AST_EXT_LIB_SETUP_DEPENDENT],
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[
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$1_DESCRIP="$2"
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m4_ifval([$4], [$1_OPTION=$4])
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m4_ifval([$3], [
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for i in ${ac_mandatory_list}; do
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   if test "x$3" = "x$i"; then
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      ac_mandatory_list="${ac_mandatory_list} $1"
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      break
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   fi
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done
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$1_DIR=${$3_DIR}
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])
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PBX_$1=0
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AH_TEMPLATE(m4_bpatsubst([[HAVE_$1]], [(.*)]), [Define to 1 if you have the $2 library.])
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AC_SUBST([$1_LIB])
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AC_SUBST([$1_INCLUDE])
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AC_SUBST([$1_DIR])
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AC_SUBST([PBX_$1])
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])
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# Setup optional dependent package
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# AST_EXT_LIB_SETUP_OPTIONAL([optional package symbol name], [optional package friendly name], [master package symbol name], [master package name])
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AC_DEFUN([AST_EXT_LIB_SETUP_OPTIONAL],
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[
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$1_DESCRIP="$2"
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m4_ifval([$4], [$1_OPTION=$4])
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m4_ifval([$3], [$1_DIR=${$3_DIR}
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])
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PBX_$1=0
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AH_TEMPLATE(m4_bpatsubst([[HAVE_$1]], [(.*)]), [Define to 1 if $3 has the $2 feature.])
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AC_SUBST([$1_LIB])
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AC_SUBST([$1_INCLUDE])
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AC_SUBST([$1_DIR])
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AC_SUBST([PBX_$1])
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])
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# Check for existence of a given package ($1), either looking up a function
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# in a library, or, if no function is supplied, only check for the
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# existence of the header files.
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# AST_EXT_LIB_CHECK([package], [library], [function], [header],
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#	 [extra libs], [extra cflags], [version])
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AC_DEFUN([AST_EXT_LIB_CHECK],
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[
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if test "x${PBX_$1}" != "x1" -a "${USE_$1}" != "no"; then
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   pbxlibdir=""
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   # if --with-$1=DIR has been specified, use it.
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   if test "x${$1_DIR}" != "x"; then
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      if test -d ${$1_DIR}/lib; then
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         pbxlibdir="-L${$1_DIR}/lib"
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      else
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         pbxlibdir="-L${$1_DIR}"
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      fi
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   fi
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   m4_ifval([$3], [
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      ast_ext_lib_check_save_CFLAGS="${CFLAGS}"
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      CFLAGS="${CFLAGS} $6"
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      AC_CHECK_LIB([$2], [$3], [AST_$1_FOUND=yes], [AST_$1_FOUND=no], [${pbxlibdir} $5])
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      CFLAGS="${ast_ext_lib_check_save_CFLAGS}"
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   ], [
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      # empty lib, assume only headers
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      AST_$1_FOUND=yes
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   ])
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   # now check for the header.
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   if test "${AST_$1_FOUND}" = "yes"; then
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      $1_LIB="${pbxlibdir} -l$2 $5"
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      # if --with-$1=DIR has been specified, use it.
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      if test "x${$1_DIR}" != "x"; then
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         $1_INCLUDE="-I${$1_DIR}/include"
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      fi
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      $1_INCLUDE="${$1_INCLUDE} $6"
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      m4_ifval([$4], [
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         # check for the header
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         ast_ext_lib_check_saved_CPPFLAGS="${CPPFLAGS}"
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         CPPFLAGS="${CPPFLAGS} ${$1_INCLUDE}"
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         AC_CHECK_HEADER([$4], [$1_HEADER_FOUND=1], [$1_HEADER_FOUND=0])
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         CPPFLAGS="${ast_ext_lib_check_saved_CPPFLAGS}"
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      ], [
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         # no header, assume found
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         $1_HEADER_FOUND="1"
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      ])
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      if test "x${$1_HEADER_FOUND}" = "x0" ; then
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         $1_LIB=""
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         $1_INCLUDE=""
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      else
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         m4_ifval([$3], [], [
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            # only checking headers -> no library
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            $1_LIB=""
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         ])
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         PBX_$1=1
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         cat >>confdefs.h <<_ACEOF
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[@%:@define] HAVE_$1 1
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_ACEOF
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         m4_ifval([$7], [
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         cat >>confdefs.h <<_ACEOF
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[@%:@define] HAVE_$1_VERSION $7
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_ACEOF
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            ])
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      fi
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   fi
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fi
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m4_ifval([$7], [AH_TEMPLATE(m4_bpatsubst([[HAVE_$1_VERSION]], [(.*)]), [Define to the version of the $2 library.])])
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])
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# Check if the previously discovered library can be dynamically linked.
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#
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# AST_EXT_LIB_CHECK_SHARED([package], [library], [function], [header],
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#	 [extra libs], [extra cflags], [action-if-true], [action-if-false])
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AC_DEFUN([AST_EXT_LIB_CHECK_SHARED],
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[
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if test "x${PBX_$1}" = "x1"; then
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   ast_ext_lib_check_shared_saved_libs="${LIBS}"
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   ast_ext_lib_check_shared_saved_ldflags="${LDFLAGS}"
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   ast_ext_lib_check_shared_saved_cflags="${CFLAGS}"
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   LIBS="${LIBS} ${$1_LIB} $5"
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   LDFLAGS="${LDFLAGS} -shared -fPIC"
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   CFLAGS="${CFLAGS} ${$1_INCLUDE} $6"
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   AC_MSG_CHECKING(for the ability of -l$2 to be linked in a shared object)
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   AC_LINK_IFELSE(
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   [
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       AC_LANG_PROGRAM(
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           [#include <$4>],
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           [$3();]
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       )
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   ],
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   [
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      AC_MSG_RESULT(yes)
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      $7
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   ],
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   [
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      AC_MSG_RESULT(no)
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      $8
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   ]
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   )
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   CFLAGS="${ast_ext_lib_check_shared_saved_cflags}"
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   LDFLAGS="${ast_ext_lib_check_shared_saved_ldflags}"
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   LIBS="${ast_ext_lib_check_shared_saved_libs}"
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fi
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])
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# Check for existence of a given package ($1), either looking up a function
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# in a library, or, if no function is supplied, only check for the
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# existence of the header files.  Then compile, link and run the supplied
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# code fragment to make the final determination.
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# AST_EXT_LIB_EXTRA_CHECK([package], [library], [function], [header],
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#	 [extra libs], [extra cflags], [AC_LANG_PROGRAM(extra check code...)],
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#    ["checking for" display string], ["HAVE_package_" extra variable to set])
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AC_DEFUN([AST_EXT_LIB_EXTRA_CHECK],
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[
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if test "x${PBX_$1}" != "x1" -a "${USE_$1}" != "no"; then
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   pbxlibdir=""
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   # if --with-$1=DIR has been specified, use it.
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   if test "x${$1_DIR}" != "x"; then
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      if test -d ${$1_DIR}/lib; then
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         pbxlibdir="-L${$1_DIR}/lib"
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      else
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         pbxlibdir="-L${$1_DIR}"
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      fi
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   fi
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   m4_ifval([$3], [
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      ast_ext_lib_check_save_CFLAGS="${CFLAGS}"
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      CFLAGS="${CFLAGS} $6"
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      AC_CHECK_LIB([$2], [$3], [AST_$1_FOUND=yes], [AST_$1_FOUND=no], [${pbxlibdir} $5])
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      CFLAGS="${ast_ext_lib_check_save_CFLAGS}"
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   ], [
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      # empty lib, assume only headers
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      AST_$1_FOUND=yes
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   ])
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   # now check for the header.
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   if test "${AST_$1_FOUND}" = "yes"; then
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      $1_LIB="${pbxlibdir} -l$2 $5"
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      # if --with-$1=DIR has been specified, use it.
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      if test "x${$1_DIR}" != "x"; then
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         $1_INCLUDE="-I${$1_DIR}/include"
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      fi
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      $1_INCLUDE="${$1_INCLUDE} $6"
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      m4_ifval([$4], [
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         # check for the header
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         ast_ext_lib_check_saved_CPPFLAGS="${CPPFLAGS}"
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         CPPFLAGS="${CPPFLAGS} ${$1_INCLUDE}"
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         AC_CHECK_HEADER([$4], [$1_HEADER_FOUND=1], [$1_HEADER_FOUND=0])
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         CPPFLAGS="${ast_ext_lib_check_saved_CPPFLAGS}"
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      ], [
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         # no header, assume found
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         $1_HEADER_FOUND="1"
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      ])
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   fi
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   # Validate the package with the supplied code.
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   if test "x${$1_HEADER_FOUND}" = "x1" ; then
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      AC_MSG_CHECKING(for $8)
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      ast_ext_lib_check_saved_CPPFLAGS="${CPPFLAGS}"
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      CPPFLAGS="${CPPFLAGS} ${$1_INCLUDE}"
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      ast_ext_lib_check_saved_LIBS="${LIBS}"
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      LIBS="${$1_LIB}"
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      AC_LINK_IFELSE(
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         [$7],
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         [
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            if test "x${cross_compiling}" = "xyes" ; then
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               $1_VALIDATED="1"
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               AC_MSG_RESULT([yes (guessed for cross-compile)])
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            else
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               ./conftest$EXEEXT
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               if test $? -eq 0 ; then
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                  $1_VALIDATED="1"
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                  AC_MSG_RESULT(yes)
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               else
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                  AC_MSG_RESULT(no)
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               fi
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            fi
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         ],
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         [
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            AC_MSG_RESULT(no)
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         ]
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      )
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      CPPFLAGS="${ast_ext_lib_check_saved_CPPFLAGS}"
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      LIBS="${ast_ext_lib_check_saved_LIBS}"
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   fi
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   if test "x${$1_VALIDATED}" = "x1" ; then
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      m4_ifval([$3], [], [
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         # only checking headers -> no library
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         $1_LIB=""
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      ])
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      PBX_$1=1
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      cat >>confdefs.h <<_ACEOF
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[@%:@define] HAVE_$1 1
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_ACEOF
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      m4_ifval([$9], [
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      cat >>confdefs.h <<_ACEOF
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[@%:@define] HAVE_$1_$9 1
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_ACEOF
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            ])
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   else
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      $1_LIB=""
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      $1_INCLUDE=""
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   fi
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fi
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m4_ifval([$9], [AH_TEMPLATE(m4_bpatsubst([[HAVE_$1_$9]], [(.*)]), [Define if $8])])
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])
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