pdns-recursor: add package

Maintainer: me

Compile tested: armv7l, OpenWRT SDK
Run tested: armv7l Linksys WRT1900ACS, OpenWrt SNAPSHOT, r9987-655fff1571 -
confirmed PowerDNS recursor links correctly against libraries and runs on my
target environment.

Description:
PowerDNS Recursor is a high-performance resolving name server, utilizing
multiple processor and including Lua scripting capabilities.

This commit includes the recursive nameserver

https://www.powerdns.com/recursor.html

Signed-off-by: James Taylor <james@jtaylor.id.au>

net/pdns-recursor/patches/100-disable-recursor.conf-dist.patch

@@ -0,0 +1,15 @@
+--- a/Makefile.am
++++ b/Makefile.am
+@@ -357,12 +357,6 @@
+ pubsuffix.cc: $(srcdir)/effective_tld_names.dat
+ 	$(AM_V_GEN)./mkpubsuffixcc
+
+-## Config file
+-sysconf_DATA = recursor.conf-dist
+-
+-recursor.conf-dist: pdns_recursor
+-	$(AM_V_GEN)./pdns_recursor --config > $@
+-
+ ## Manpages
+ MANPAGES=pdns_recursor.1 \
+ 	 rec_control.1

net/pdns-recursor/patches/200-libatomic-detect.patch

@@ -0,0 +1,34 @@
+--- a/m4/pdns_check_os.m4
++++ b/m4/pdns_check_os.m4
+@@ -35,16 +35,21 @@
+   AM_CONDITIONAL([HAVE_LINUX], [test "x$have_linux" = "xyes"])
+   AM_CONDITIONAL([HAVE_SOLARIS], [test "x$have_solaris" = "xyes"])
+
+-  case "$host" in
+-  mips* | powerpc-* )
+-    AC_MSG_CHECKING([whether the linker accepts -latomic])
+-    LDFLAGS="-latomic $LDFLAGS"
+-    AC_LINK_IFELSE([m4_default([],[AC_LANG_PROGRAM()])],
+-      [AC_MSG_RESULT([yes])],
+-      [AC_MSG_ERROR([Unable to link against libatomic, cannot continue])]
+-    )
+-    ;;
+-  esac
++  AC_MSG_CHECKING([whether -latomic is needed for __atomic builtins])
++  AC_LINK_IFELSE(
++    [AC_LANG_PROGRAM([[#include <stdint.h>]],
++       [[uint64_t val = 0; __atomic_add_fetch(&val, 1, __ATOMIC_RELAXED);]]
++    )],
++    [AC_MSG_RESULT([no])],
++    [LIBS="$LIBS -latomic"
++     AC_LINK_IFELSE(
++       [AC_LANG_PROGRAM([[#include <stdint.h>]],
++               [[uint64_t val = 0; __atomic_add_fetch(&val, 1, __ATOMIC_RELAXED);]]
++       )],
++       [AC_MSG_RESULT([yes])],
++       [AC_MSG_FAILURE([libatomic needed, but linking with -latomic failed, cannot continue])]
++    )]
++  )
+
+   AC_SUBST(THREADFLAGS)
+   AC_SUBST([DYNLINKFLAGS], [-export-dynamic])

net/pdns-recursor/patches/300-gen-version.patch

@@ -0,0 +1,43 @@
+--- a/build-aux/gen-version
++++ b/build-aux/gen-version
+@@ -1,39 +1,4 @@
+ #!/bin/sh
+-VERSION="unknown"
+-
+-DIRTY=""
+-git status | grep -q clean || DIRTY='.dirty'
+-
+-# Special environment variable to signal that we are building a release, as this
+-# has consequences for the version number.
+-if [ "${IS_RELEASE}" = "YES" ]; then
+-  TAG="$(git describe --tags --exact-match 2> /dev/null | cut -d- -f 2-)"
+-  if [ -n "${TAG}" ]; then
+-    # We're on a tag
+-    echo "${TAG}${DIRTY}" > .version
+-    printf "${TAG}${DIRTY}"
+-    exit 0
+-  fi
+-  echo 'This is not a tag, either tag this commit or do not set $IS_RELEASE' >&2
+-  exit 1
+-fi
+-
+-#
+-# Generate the version number based on the branch
+-#
+-if [ ! -z "$(git rev-parse --abbrev-ref HEAD 2> /dev/null)" ]; then
+-  if $(git rev-parse --abbrev-ref HEAD | grep -q 'rel/'); then
+-    REL_TYPE="$(git rev-parse --abbrev-ref HEAD | cut -d/ -f 2 | cut -d- -f 1)"
+-    VERSION="$(git describe --match=${REL_TYPE}-* --tags --dirty=.dirty | cut -d- -f 2-)"
+-  else
+-    GIT_VERSION=$(git show --no-patch --format=format:%h HEAD)
+-    BRANCH=".$(git rev-parse --abbrev-ref HEAD | perl -p -e 's/[^[:alnum:]]//g;')"
+-    [ "${BRANCH}" = ".master" ] && BRANCH=''
+-    VERSION="0.0${BRANCH}.${PDNS_BUILD_NUMBER}g${GIT_VERSION}${DIRTY}"
+-  fi
+-  echo "$VERSION" > .version
+-elif [ -f .version ]; then
+-  VERSION="$(cat .version)"
+-fi
++VERSION="$(cat .version)"
+
+ printf $VERSION