diff --git a/BUILD b/BUILD
index 9786728..5812bbb 100644
--- a/BUILD
+++ b/BUILD
@@ -21,10 +21,12 @@ genrule(
 cc_library(
     name = "headers",
     srcs = glob([
+        "src/common/**/*.h",
         "src/include/**/*.h",
         "src/interfaces/libpq/*.h",
     ]) + ["src/port/pg_config_paths.h"],
     includes = [
+        "src/common",
         "src/include",
         "src/interfaces/libpq",
         "src/port",
@@ -42,6 +44,22 @@ cc_library(
     name = "pq",
     srcs = [
         ":pg_config",
+        "@postgres//:src/common/base64.c",
+        "@postgres//:src/common/cryptohash.c",
+        "@postgres//:src/common/encnames.c",
+        "@postgres//:src/common/hmac.c",
+        "@postgres//:src/common/ip.c",
+        "@postgres//:src/common/link-canary.c",
+        "@postgres//:src/common/md5.c",
+        "@postgres//:src/common/md5_common.c",
+        "@postgres//:src/common/pg_prng.c",
+        "@postgres//:src/common/saslprep.c",
+        "@postgres//:src/common/scram-common.c",
+        "@postgres//:src/common/sha1.c",
+        "@postgres//:src/common/sha2.c",
+        "@postgres//:src/common/string.c",
+        "@postgres//:src/common/unicode_norm.c",
+        "@postgres//:src/common/wchar.c",
         "@postgres//:src/interfaces/libpq/fe-auth.c",
         "@postgres//:src/interfaces/libpq/fe-auth-scram.c",
         "@postgres//:src/interfaces/libpq/fe-connect.c",
@@ -56,6 +74,27 @@ cc_library(
         "@postgres//:src/interfaces/libpq/legacy-pqsignal.c",
         "@postgres//:src/interfaces/libpq/libpq-events.c",
         "@postgres//:src/interfaces/libpq/pqexpbuffer.c",
+        "@postgres//:src/port/chklocale.c",
+        "@postgres//:src/port/explicit_bzero.c",
+        "@postgres//:src/port/inet_net_ntop.c",
+        "@postgres//:src/port/noblock.c",
+        "@postgres//:src/port/pg_strong_random.c",
+        "@postgres//:src/port/pgstrcasecmp.c",
+        "@postgres//:src/port/snprintf.c",
+        "@postgres//:src/port/strerror.c",
+        "@postgres//:src/port/thread.c",
+    ] + select({
+        "@platforms//os:linux": [
+            "@libpq//:getpeereid.linux.c",
+            "@postgres//:src/port/strlcat.c",
+            "@postgres//:src/port/strlcpy.c",
+        ],
+        "//conditions:default": [],
+    }),
+    defines = [
+        "FRONTEND",
+        "HAVE_STRERROR_R",
+        "STRERROR_R_INT",
     ],
     linkstatic = True,
     visibility = ["//visibility:public"],
diff --git a/getpeereid.linux.c b/getpeereid.linux.c
new file mode 100644
index 0000000..677ddb3
--- /dev/null
+++ b/getpeereid.linux.c
@@ -0,0 +1,16 @@
+#include "c.h"
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <unistd.h>
+
+/*
+ * BSD-style getpeereid() for platforms that lack it.
+ */
+int
+getpeereid(int sock, uid_t *uid, gid_t *gid)
+{	/* No implementation available on this platform */
+	errno = ENOSYS;
+	return -1;
+}
\ No newline at end of file