chore: add meson support to build extension

Since meson is the PostgreSQL standard now to build, we add support
for meson and make it the tool required to build.

Closes #8

Signed-off-by: Jonathan Gonzalez V. <[email protected]>

Author: sxd

docker/Dockerfile

@@ -5,12 +5,13 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     set -eux; \
     apt-get update; \
     apt-get install -y --no-install-recommends \
-    build-essential libcurl4-openssl-dev postgresql-server-dev-18; \
-    apt-get clean; \
-    rm -rf /var/lib/apt/lists/*
+    build-essential \
+    meson \
+    libcurl4-openssl-dev \
+    postgresql-server-dev-18; \
 WORKDIR /work
-COPY src/ ./src/
-RUN make -C src
+COPY . .
+RUN meson setup build && meson build -C build/
 
 FROM ghcr.io/cloudnative-pg/postgresql:18-standard-trixie
 ARG DEBIAN_FRONTEND=noninteractive
@@ -25,4 +26,4 @@ COPY --chmod=0644 docker/certs/server.crt /usr/local/share/ca-certificates/kc-ro
 RUN update-ca-certificates
 ENV CURL_CA_BUNDLE=/etc/ssl/certs/ca-certificates.crt
 USER postgres
-COPY --from=builder /work/src/kc_validator.so /usr/lib/postgresql/18/lib/
+COPY --from=builder /work/build/kc_validator.so /usr/lib/postgresql/18/lib/

meson.build

@@ -0,0 +1,11 @@
+project('postgres-keycloak-oauth-validator', 'c')
+
+pg_config = find_program('pg_config')
+includedir_server = run_command(pg_config, '--includedir-server', check: true).stdout().strip()
+postgres = dependency('libpq')
+libcurl = dependency('libcurl')
+
+shared_module('kc_validator', 'src/kc_validator.c',
+              dependencies: [postgres, libcurl],
+              include_directories: [includedir_server],
+              name_prefix: '')