rec: allow use of meson to create dist file

meson/version/meson.build

@@ -1,4 +1,2 @@
-gen_version_prog = find_program('gen-version', dirs: product_source_dir / 'builder-support', required: true)
-gen_version_prog_res = run_command(gen_version_prog, check: true)
-product_version = gen_version_prog_res.stdout().strip()
+product_version = meson.project_version()
 conf.set_quoted('VERSION', product_version, description: 'Version')

pdns/recursordist/.gitattributes

@@ -0,0 +1,7 @@
+Caddyfile export-ignore
+/README.md export-ignore
+docs export-ignore
+examples export-ignore
+make-ext-symlinks.py export-ignore
+recursor-lsan.supp export-ignore
+recursor-tsan.supp export-ignore

pdns/recursordist/NOTICE

@@ -0,0 +1,16 @@
+This program is free software; you can redistribute it and/or modify
+it under the terms of version 2 of the GNU General Public License as
+published by the Free Software Foundation.
+
+In addition, for the avoidance of any doubt, permission is granted to
+link this program with OpenSSL and to (re)distribute the binaries
+produced as the result of such linking.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

pdns/recursordist/builder-support/gen-version

@@ -0,0 +1,77 @@
+#!/bin/sh
+if [ ! -z "${BUILDER_VERSION}" ]; then
+  printf ${BUILDER_VERSION}
+  exit 0
+fi
+
+VERSION="unknown"
+
+DIRTY=""
+git status | grep -q clean || DIRTY='.dirty'
+
+# Special environment variable to signal that we are building a release, as this
+# has consequenses for the version number.
+if [ "${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 [ -n "${BUILDER_MODULES}" ]; then
+    match=${BUILDER_MODULES}
+    [ $match = "authoritative" ] && match='auth'
+    [ $match = "recursor" ] && match='rec'
+    GIT_VERSION="$(git describe --match=${match}-* --tags | cut -d- -f2-)"
+    if [ $(echo ${GIT_VERSION} | awk -F"-" '{print NF-1}') = '3' ]; then
+      # A prerelease happened before
+      LAST_TAG="$(echo ${GIT_VERSION} | cut -d- -f1-2)"
+      COMMITS_SINCE_TAG="$(echo ${GIT_VERSION} | cut -d- -f3)"
+      GIT_HASH="$(echo ${GIT_VERSION} | cut -d- -f4)"
+    elif [ $(echo ${GIT_VERSION} | awk -F"-" '{print NF-1}') = '1' ]; then
+      # Exactly on a pre-release
+      LAST_TAG="$(echo ${GIT_VERSION} | cut -d- -f1-2)"
+    else
+      LAST_TAG="$(echo ${GIT_VERSION} | cut -d- -f1)"
+      COMMITS_SINCE_TAG="$(echo ${GIT_VERSION} | cut -d- -f2)"
+      GIT_HASH="$(echo ${GIT_VERSION} | cut -d- -f3)"
+    fi
+  fi
+
+  if [ -z "${GIT_VERSION}" ]; then
+    # BUILDER_SUPPORT has more than one product listed, fall back to the 0.0.0 logic
+
+    # We used 0.0.XXXXgHASH for master in the previous incarnation of our build pipeline.
+    # This now becomes 0.0.XXXX.0.gHASH, as 0.0.0.XXXX.gHASH (which is more correct)
+    # would break upgrades for those running master
+    # This _should_ be ok for forever is we stick to X.Y.Z for version numbers
+    LAST_TAG=0.0
+    COMMITS_SINCE_TAG="$(git rev-list --count 12c868770afc20b6cc0da439d881105151d557dd..HEAD 2> /dev/null).0"
+    [ "${COMMITS_SINCE_TAG}" = ".0" ] && COMMITS_SINCE_TAG=0.0
+    GIT_HASH="g$(git rev-parse HEAD | cut -c1-10 2> /dev/null)"
+  fi
+
+  BRANCH=".$(git rev-parse --abbrev-ref HEAD | perl -p -e 's/[^[:alnum:]]//g;')"
+
+  TAG="$(git describe --tags --exact-match 2> /dev/null | cut -d- -f 2-)"
+  if [ -n "${TAG}" ]; then # We're exactly on a tag
+    COMMITS_SINCE_TAG="0"
+    GIT_HASH="g$(git show --no-patch --format=format:%h HEAD 2>/dev/null)"
+    if [ -z "$GIT_HASH" ]; then
+      GIT_HASH="g$(git show --format=format:%h HEAD | head -n1)"
+    fi
+  fi
+
+  VERSION="${LAST_TAG}.${COMMITS_SINCE_TAG}${BRANCH}.${GIT_HASH}${DIRTY}"
+fi
+
+printf $VERSION

pdns/recursordist/docs/requirements.in

@@ -13,3 +13,5 @@ docutils!=0.15,<0.18
 jinja2<3.1.0
 alabaster==0.7.13
 pbr==6.1.0 # setup-requires for sphinxcontrib-fulltoc
+standard-imghdr
+standard-pipes

pdns/recursordist/docs/requirements.txt

@@ -1,5 +1,5 @@
 #
-# This file is autogenerated by pip-compile with Python 3.11
+# This file is autogenerated by pip-compile with Python 3.12
 # by the following command:
 #
 #    pip-compile --generate-hashes requirements.in
@@ -265,6 +265,14 @@ sphinxcontrib-websupport==1.2.4 \
     --hash=sha256:4edf0223a0685a7c485ae5a156b6f529ba1ee481a1417817935b20bde1956232 \
     --hash=sha256:6fc9287dfc823fe9aa432463edd6cea47fa9ebbf488d7f289b322ffcfca075c7
     # via sphinx
+standard-imghdr==3.13.0 \
+    --hash=sha256:30a1bff5465605bb496f842a6ac3cc1f2131bf3025b0da28d4877d6d4b7cc8e9 \
+    --hash=sha256:8d9c68058d882f6fc3542a8d39ef9ff94d2187dc90bd0c851e0902776b7b7a42
+    # via -r requirements.in
+standard-pipes==3.13.0 \
+    --hash=sha256:5805d0738fa17192e58cc4dea26dcfe9b8c5cd9c77e78d5dbded8bc3bda428c9 \
+    --hash=sha256:cde270ae625064211dbcd1c8f35a540b70d8ccd7443b099a496f8e6a44fed2f3
+    # via -r requirements.in
 urllib3==2.2.3 \
     --hash=sha256:ca899ca043dcb1bafa3e262d73aa25c465bfb49e0bd9dd5d59f1d0acba2f8fac \
     --hash=sha256:e7d814a81dad81e6caf2ec9fdedb284ecc9c73076b62654547cc64ccdcae26e9

pdns/recursordist/meson-dist-script.sh

@@ -0,0 +1,37 @@
+#!/bin/sh -e
+
+echo Running meson-dist-script
+echo PWD=$(pwd)
+echo MESON_SOURCE_ROOT=$MESON_SOURCE_ROOT
+echo MESON_PROJECT_DIST_ROOT=$MESON_PROJECT_DIST_ROOT
+
+cd "$MESON_PROJECT_DIST_ROOT"
+
+# Get all symlinks
+symlinks=$(find . -type l)
+
+# Get the dereffed symbolic links (the actual files being pointed to) from the source dir
+# Extract them over the existing symbolic links
+tar -C "$MESON_SOURCE_ROOT" -hcf - $symlinks | tar -xf - -C "$MESON_PROJECT_DIST_ROOT"
+
+# Run autoconf for people using autotools to build, this creates a configure script with VERSION set
+echo Running autoreconf -vi so distfile is still usable for autotools building
+# Run autoconf for people using autotools to build, this creates a configure sc
+autoreconf -vi
+
+# Generate man pages
+cd "$MESON_PROJECT_BUILD_ROOT"
+ninja man-pages
+cp -vp rec-man-pages/*.1 "$MESON_PROJECT_DIST_ROOT"
+
+rm -rf "$MESON_PROJECT_DIST_ROOT"/autom4te.cache
+
+
+# Generate  a few files to reduce build dependencies
+echo 'If the below command generates an error, remove dnslabeltext.cc from source dir (remains of an autotools build?) and start again with a clean meson setup'
+ninja librec-dnslabeltext.a.p/dnslabeltext.cc
+cp -vp librec-dnslabeltext.a.p/dnslabeltext.cc "$MESON_PROJECT_DIST_ROOT"
+echo 'If the below command generates an error, remove effective_tld_names.dat and pubsuffix.cc from source dir (remains of an autotools build?) and start again with a clean meson setup'
+ninja effective_tld_names.dat
+cp -vp effective_tld_names.dat "$MESON_PROJECT_DIST_ROOT"
+

pdns/recursordist/meson.build

@@ -1,7 +1,7 @@
 project(
   'pdns-recursor',
   ['c', 'cpp'],
-  version: run_command('../../builder-support' / 'gen-version', check: true).stdout().strip(),
+  version: run_command('version.sh', 'get-vcs', check: true).stdout().strip(),
   license: 'GPLv2',
   license_files: 'NOTICE',
   meson_version: '>= 1.2.1',
@@ -11,6 +11,12 @@ project(
     'cpp_std=c++17',
   ],
 )
+meson.add_dist_script('meson-dist-script.sh')
+
+# When runniog meson dist, the command below produces multiple lines on stderr:
+# Unable to evaluate subdir([]) in AstInterpreter --> Skipping
+meson.add_dist_script('version.sh', 'set-dist', meson.project_version())
+
 add_project_arguments('-DRECURSOR', language: 'cpp')
 
 

pdns/recursordist/version.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+if [ "$1" = "get-vcs" ]; then
+  builder-support/gen-version
+elif [ "$1" = "set-dist" ]; then
+  $MESONREWRITE -V --sourcedir="$MESON_PROJECT_DIST_ROOT" kwargs set project / version "$2"
+else
+  exit 1
+fi