pgpool2- add iamguarded build package (#77219)

Signed-off-by: Anushka Mittal <anushka.mittal@chainguard.dev>
Co-authored-by: Anushka Mittal <anushka.mittal@chainguard.dev>

Author: astrojerms

pgpool2-4.6.yaml

@@ -1,7 +1,7 @@
 package:
   name: pgpool2-4.6
   version: "4.6.5"
-  epoch: 1
+  epoch: 2
   description: Middleware that works between PostgreSQL servers and a PostgreSQL database client.
   copyright:
     - license: BSD-3-Clause AND MIT
@@ -144,6 +144,44 @@ subpackages:
             stat /opt/pgpool-II/bin/start.sh
             stat /opt/pgpool-II/bin/entrypoint.sh
 
+  # iamguarded variant of pgpool2 with a different confdir
+  - name: ${{package.name}}-iamguarded
+    description: "Iamguarded pkg that builds with specific confdir"
+    dependencies:
+      provides:
+        - pgpool2-iamguarded=${{package.full-version}}
+      runtime:
+        - bash
+        - postgresql
+        - postgresql-client
+    pipeline:
+      - uses: autoconf/configure
+        with:
+          opts: |
+            --prefix=/opt/iamguarded/pgpool --sysconfdir=/opt/iamguarded/pgpool/etc --libdir=/opt/iamguarded/pgpool/lib --with-openssl
+      # build src/parser explicitly to avoid build failures due to missing parser files with -j flag
+      - runs: |
+          make -C src/parser V=1
+      - uses: autoconf/make
+        with:
+          opts: "clean" # The binary embeds the sysconfdir path at build time into the binary, so we do a clean rebuild.
+      - uses: autoconf/make-install
+      - uses: strip
+      - runs: |
+          mkdir -p "${{targets.contextdir}}/var/run/pgpool"
+          mkdir -p ${{targets.contextdir}}/usr/bin/
+          # To enable backwards compatibility with existing iamguarded-compat package, we copy binaries to /usr/bin
+          cp -p ${{targets.contextdir}}/opt/iamguarded/pgpool/bin/* ${{targets.contextdir}}/usr/bin/
+    test:
+      pipeline:
+        - uses: test/tw/ver-check
+          with:
+            bins: "/opt/iamguarded/pgpool/bin/pgpool"
+            version: ${{package.version}}
+        - uses: test/tw/help-check
+          with:
+            bins: "/opt/iamguarded/pgpool/bin/pgpool"
+
   - name: ${{package.name}}-iamguarded-compat
     description: "Compatibility package for iamguarded variant of pgpool2"
     dependencies:
@@ -211,7 +249,6 @@ subpackages:
             package: pgpool2
             version: ${{vars.major-version}}
         - runs: |
-            test -f /opt/iamguarded/pgpool/bin/pgpool
             test -f /opt/iamguarded/postgresql/bin/psql
 
 update: