diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a40bb76
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+SOURCES/postgresql-12.3.tar.bz2
diff --git a/.libpq.metadata b/.libpq.metadata
new file mode 100644
index 0000000..c0826bb
--- /dev/null
+++ b/.libpq.metadata
@@ -0,0 +1 @@
+2730f6c0c22037646c84b902a13f5aaa56308ab8 SOURCES/postgresql-12.3.tar.bz2
diff --git a/SOURCES/libpq-10.3-rpm-pgsql.patch b/SOURCES/libpq-10.3-rpm-pgsql.patch
new file mode 100644
index 0000000..aec64ac
--- /dev/null
+++ b/SOURCES/libpq-10.3-rpm-pgsql.patch
@@ -0,0 +1,72 @@
+For the RPMs, we want the custom installation directories to end in
+/pgsql not /postgresql.  This is historical but not worth changing.
+
+Notice that this patch also makes the appending of /pgsql unconditional.
+This is to avoid unexpected behavior if the RPM is built in a working
+directory whose path happens to include "postgres" or "pgsql" already.
+However, datadir and sysconfdir are already set up in the specfile's
+configure call, so we do not have to append anything to them.
+
+
+diff -Naur postgresql-9.0.1.orig/src/Makefile.global.in postgresql-9.0.1/src/Makefile.global.in
+--- postgresql-9.0.1.orig/src/Makefile.global.in	2010-10-01 10:25:44.000000000 -0400
++++ postgresql-9.0.1/src/Makefile.global.in	2010-10-11 11:52:05.224975308 -0400
+@@ -55,8 +55,7 @@
+ # Installation directories
+ #
+ # These are set by the equivalent --xxxdir configure options.  We
+-# append "postgresql" to some of them, if the string does not already
+-# contain "pgsql" or "postgres", in order to avoid directory clutter.
++# append "pgsql" to some of them, in order to avoid directory clutter.
+ #
+ # In a PGXS build, we cannot use the values inserted into Makefile.global
+ # by configure, since the installation tree may have been relocated.
+@@ -74,45 +73,23 @@
+ bindir := @bindir@
+ 
+ datadir := @datadir@
+-ifeq "$(findstring pgsql, $(datadir))" ""
+-ifeq "$(findstring postgres, $(datadir))" ""
+-override datadir := $(datadir)/postgresql
+-endif
+-endif
+ 
+ sysconfdir := @sysconfdir@
+-ifeq "$(findstring pgsql, $(sysconfdir))" ""
+-ifeq "$(findstring postgres, $(sysconfdir))" ""
+-override sysconfdir := $(sysconfdir)/postgresql
+-endif
+-endif
+ 
+ libdir := @libdir@
+ 
+ pkglibdir = $(libdir)
+-ifeq "$(findstring pgsql, $(pkglibdir))" ""
+-ifeq "$(findstring postgres, $(pkglibdir))" ""
+-override pkglibdir := $(pkglibdir)/postgresql
+-endif
+-endif
++override pkglibdir := $(pkglibdir)/pgsql
+ 
+ includedir := @includedir@
+ 
+ pkgincludedir = $(includedir)
+-ifeq "$(findstring pgsql, $(pkgincludedir))" ""
+-ifeq "$(findstring postgres, $(pkgincludedir))" ""
+-override pkgincludedir := $(pkgincludedir)/postgresql
+-endif
+-endif
++override pkgincludedir := $(pkgincludedir)/pgsql
+ 
+ mandir := @mandir@
+ 
+ docdir := @docdir@
+-ifeq "$(findstring pgsql, $(docdir))" ""
+-ifeq "$(findstring postgres, $(docdir))" ""
+-override docdir := $(docdir)/postgresql
+-endif
+-endif
++override docdir := $(docdir)/pgsql
+ 
+ htmldir := @htmldir@
+ 
diff --git a/SOURCES/libpq-10.3-var-run-socket.patch b/SOURCES/libpq-10.3-var-run-socket.patch
new file mode 100644
index 0000000..8e3b193
--- /dev/null
+++ b/SOURCES/libpq-10.3-var-run-socket.patch
@@ -0,0 +1,53 @@
+Change the built-in default socket directory to be /var/run/postgresql.
+For backwards compatibility with (probably non-libpq-based) clients that
+might still expect to find the socket in /tmp, also create a socket in
+/tmp.  This is to resolve communication problems with clients operating
+under systemd's PrivateTmp environment, which won't be using the same
+global /tmp directory as the server; see bug #825448.
+
+Note that we apply the socket directory change at the level of the
+hard-wired defaults in the C code, not by just twiddling the setting in
+postgresql.conf.sample; this is so that the change will take effect on
+server package update, without requiring any existing postgresql.conf
+to be updated.  (Of course, a user who dislikes this behavior can still
+override it via postgresql.conf.)
+
+diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
+index 9481f2d..75532c7 100644
+--- a/src/backend/utils/misc/guc.c
++++ b/src/backend/utils/misc/guc.c
+@@ -3196,7 +3196,7 @@ static struct config_string ConfigureNamesString[] =
+ 		},
+ 		&Unix_socket_directories,
+ #ifdef HAVE_UNIX_SOCKETS
+-		DEFAULT_PGSOCKET_DIR,
++		DEFAULT_PGSOCKET_DIR ", /tmp",
+ #else
+ 		"",
+ #endif
+diff --git a/src/bin/initdb/initdb.c b/src/bin/initdb/initdb.c
+index feeff9e..3e3d784 100644
+--- a/src/bin/initdb/initdb.c
++++ b/src/bin/initdb/initdb.c
+@@ -1234,7 +1234,7 @@ setup_config(void)
+ 
+ #ifdef HAVE_UNIX_SOCKETS
+ 	snprintf(repltok, sizeof(repltok), "#unix_socket_directories = '%s'",
+-			 DEFAULT_PGSOCKET_DIR);
++			 DEFAULT_PGSOCKET_DIR ", /tmp");
+ #else
+ 	snprintf(repltok, sizeof(repltok), "#unix_socket_directories = ''");
+ #endif
+diff --git a/src/include/pg_config_manual.h b/src/include/pg_config_manual.h
+index e278fa0..9ee15d4 100644
+--- a/src/include/pg_config_manual.h
++++ b/src/include/pg_config_manual.h
+@@ -169,7 +169,7 @@
+  * here's where to twiddle it.  You can also override this at runtime
+  * with the postmaster's -k switch.
+  */
+-#define DEFAULT_PGSOCKET_DIR  "/tmp"
++#define DEFAULT_PGSOCKET_DIR  "/var/run/postgresql"
+ 
+ /*
+  * This is the default event source for Windows event log.
diff --git a/SOURCES/libpq-12.0-symbol-versioning.patch b/SOURCES/libpq-12.0-symbol-versioning.patch
new file mode 100644
index 0000000..2ff9570
--- /dev/null
+++ b/SOURCES/libpq-12.0-symbol-versioning.patch
@@ -0,0 +1,92 @@
+- The libpq package is supposed to be used for all the PostgreSQL modules
+
+- available in RHEL 8, and ABI versioning will guarantee us that modular RPMs will
+- depend on appropriate libpq ABI version (picked at build-time).
+
+diff --git a/config/Makefile b/config/Makefile
+index 67e7998f55..86612a42c3 100644
+--- a/config/Makefile
++++ b/config/Makefile
+@@ -8,6 +8,7 @@ include $(top_builddir)/src/Makefile.global
+ install: all installdirs
+ 	$(INSTALL_SCRIPT) $(srcdir)/install-sh '$(DESTDIR)$(pgxsdir)/config/install-sh'
+ 	$(INSTALL_SCRIPT) $(srcdir)/missing '$(DESTDIR)$(pgxsdir)/config/missing'
++	$(INSTALL_SCRIPT) $(srcdir)/build-exports-gnu-ld '$(DESTDIR)$(pgxsdir)/config/build-exports-gnu-ld'
+ 
+ installdirs:
+ 	$(MKDIR_P) '$(DESTDIR)$(pgxsdir)/config'
+diff --git a/config/build-exports-gnu-ld b/config/build-exports-gnu-ld
+new file mode 100755
+index 0000000000..84c48e3ade
+--- /dev/null
++++ b/config/build-exports-gnu-ld
+@@ -0,0 +1,41 @@
++#! /bin/sh
++
++# by default use PG_ prefix
++: "${SYMBOL_VERSION_PREFIX=PG_}"
++
++# we started symbol versioning since v10
++: "${SYMBOL_VERSION_START=9.6}"
++
++version=$SYMBOL_VERSION_START
++version_prev=
++first=:
++
++open_block ()
++{
++	$first || echo
++	first=false
++	echo "${SYMBOL_VERSION_PREFIX}$version {"
++	echo "global:"
++}
++
++close_block ()
++{
++	echo "}${version_prev:+ $SYMBOL_VERSION_PREFIX$version_prev};"
++	version_prev=$version
++	version=$1
++}
++
++open_block
++while read -r symbol _ new_version
++do
++	case $symbol in '#'*) continue ;; esac
++	if test -n "$new_version" && test "$new_version" != "$version"; then
++		close_block "$new_version"
++		open_block
++	fi
++	echo "	$symbol;"
++done
++
++echo "local:"
++echo "	*;"
++close_block
+diff --git a/src/Makefile.shlib b/src/Makefile.shlib
+index 373d73caef..d5bd5468cd 100644
+--- a/src/Makefile.shlib
++++ b/src/Makefile.shlib
+@@ -231,7 +231,7 @@ ifeq ($(PORTNAME), linux)
+   ifdef soname
+     LINK.shared		+= -Wl,-soname,$(soname)
+   endif
+-  BUILD.exports		= ( echo '{ global:'; $(AWK) '/^[^\#]/ {printf "%s;\n",$$1}' $<; echo ' local: *; };' ) >$@
++  BUILD.exports		= $(SHELL) $(top_srcdir)/config/build-exports-gnu-ld < $< > $@
+   exports_file		= $(SHLIB_EXPORTS:%.txt=%.list)
+   ifneq (,$(exports_file))
+     LINK.shared		+= -Wl,--version-script=$(exports_file)
+diff --git a/src/interfaces/libpq/exports.txt b/src/interfaces/libpq/exports.txt
+index ccec59919b..4c2be8b7d5 100644
+--- a/src/interfaces/libpq/exports.txt
++++ b/src/interfaces/libpq/exports.txt
+@@ -171,8 +171,8 @@ PQsslAttributeNames       168
+ PQsslAttribute            169
+ PQsetErrorContextVisibility 170
+ PQresultVerboseErrorMessage 171
+-PQencryptPasswordConn     172
+-PQresultMemorySize        173
++PQencryptPasswordConn     172      10
++PQresultMemorySize        173      12
+ PQhostaddr                174
+ PQgssEncInUse             175
+ PQgetgssctx               176
diff --git a/SOURCES/postgresql-12.3.tar.bz2.sha256 b/SOURCES/postgresql-12.3.tar.bz2.sha256
new file mode 100644
index 0000000..80e40e5
--- /dev/null
+++ b/SOURCES/postgresql-12.3.tar.bz2.sha256
@@ -0,0 +1 @@
+94ed64a6179048190695c86ec707cc25d016056ce10fc9d229267d9a8f1dcf41  postgresql-12.3.tar.bz2
diff --git a/SPECS/libpq.spec b/SPECS/libpq.spec
new file mode 100644
index 0000000..46a2d1b
--- /dev/null
+++ b/SPECS/libpq.spec
@@ -0,0 +1,164 @@
+%global majorversion 12
+%global obsoletes_version %( echo $(( %majorversion + 1 )) )
+
+Summary: PostgreSQL client library
+Name: libpq
+Version: %{majorversion}.3
+Release: 1%{?dist}
+
+License: PostgreSQL
+Url: http://www.postgresql.org/
+
+Source0: https://ftp.postgresql.org/pub/source/v%{version}/postgresql-%{version}.tar.bz2
+Source1: https://ftp.postgresql.org/pub/source/v%{version}/postgresql-%{version}.tar.bz2.sha256
+
+
+# Comments for these patches are in the patch files.
+Patch1: libpq-10.3-rpm-pgsql.patch
+Patch2: libpq-10.3-var-run-socket.patch
+Patch3: libpq-12.0-symbol-versioning.patch
+
+BuildRequires: gcc
+BuildRequires: glibc-devel bison flex gawk
+BuildRequires: zlib-devel
+BuildRequires: openssl-devel
+BuildRequires: krb5-devel
+BuildRequires: openldap-devel
+BuildRequires: gettext
+BuildRequires: multilib-rpm-config
+
+Obsoletes: postgresql-libs < %obsoletes_version
+Provides: postgresql-libs = %version-%release
+
+
+%description
+The libpq package provides the essential shared library for any PostgreSQL
+client program or interface.  You will need to install this package to use any
+other PostgreSQL package or any clients that need to connect to a PostgreSQL
+server.
+
+
+%package devel
+Summary: Development files for building PostgreSQL client tools
+Requires: %name%{?_isa} = %version-%release
+# Historically we had 'postgresql-devel' package which was used for building
+# both PG clients and PG server modules;  let's have this fake provide to cover
+# most of the depending packages and the rest (those which want to build server
+# modules) need to be fixed to require postgresql-server-devel package.
+Provides: postgresql-devel = %version-%release
+Obsoletes: postgresql-devel < %obsoletes_version
+
+%description devel
+The libpq package provides the essential shared library for any PostgreSQL
+client program or interface.  You will need to install this package to build any
+package or any clients that need to connect to a PostgreSQL server.
+
+
+%prep
+( cd "$(dirname "%SOURCE1")" ; sha256sum -c "%SOURCE1" )
+%autosetup -n postgresql-%{version} -p1
+
+# remove .gitignore files to ensure none get into the RPMs (bug #642210)
+find . -type f -name .gitignore | xargs rm
+
+
+%build
+# complements symbol-versioning patch
+export SYMBOL_VERSION_PREFIX=RHPG_
+
+# We don't build server nor client (e.g. /bin/psql) binaries in this package, so
+# we can disable some configure options.
+%configure \
+    --disable-rpath \
+    --with-ldap \
+    --with-openssl \
+    --with-gssapi \
+    --enable-nls \
+    --without-readline \
+    --datadir=%_datadir/pgsql
+
+%global build_subdirs \\\
+        src/include \\\
+        src/common \\\
+        src/port \\\
+        src/interfaces/libpq \\\
+        src/bin/pg_config
+
+for subdir in %build_subdirs; do
+    %make_build -C "$subdir"
+done
+
+
+%install
+for subdir in %build_subdirs; do
+    %make_install -C "$subdir"
+done
+
+# remove files not to be packaged
+find $RPM_BUILD_ROOT -name '*.a' -delete
+rm -r $RPM_BUILD_ROOT%_includedir/pgsql/server
+
+%multilib_fix_c_header --file "%_includedir/pg_config.h"
+%multilib_fix_c_header --file "%_includedir/pg_config_ext.h"
+
+find_lang_bins ()
+{
+    lstfile=$1 ; shift
+    cp /dev/null "$lstfile"
+    for binary; do
+        %find_lang "$binary"-%majorversion
+        cat "$binary"-%majorversion.lang >>"$lstfile"
+    done
+}
+
+find_lang_bins %name.lst        libpq5
+find_lang_bins %name-devel.lst  pg_config
+
+
+%files -f %name.lst
+%license COPYRIGHT
+%_libdir/libpq.so.*
+%dir %_datadir/pgsql
+%doc %_datadir/pgsql/pg_service.conf.sample
+
+
+%files devel -f %name-devel.lst
+%_bindir/pg_config
+%_includedir/*
+%_libdir/libpq.so
+%_libdir/pkgconfig/libpq.pc
+
+
+%changelog
+* Tue Jun 16 2020 Patrik Novotný <panovotn@redhat.com> - 12.3-1
+- Rebase to upstream release 12.3
+
+* Tue Nov 19 2019 Patrik Novotný <panovotn@redhat.com> - 12.1-3
+- Rebuild with rebased symbol versioning patch
+
+* Fri Nov 15 2019 Patrik Novotný <panovotn@redhat.com> - 12.1-2
+- Rebuild with rebased symbol versioning patch
+
+* Tue Nov 12 2019 Patrik Novotný <panovotn@redhat.com> - 12.1-1
+- Rebase to upstream release 12.1
+
+* Fri Nov 08 2019 Honza Horak <hhorak@redhat.com> - 12.0-2
+- Bump release for a new build with gating.yaml added
+  Related: #1749461
+
+* Thu Oct 03 2019 Patrik Novotný <panovotn@redhat.com> - 12.0-1
+- Initial release for upstream version 12.0
+
+* Wed Aug 08 2018 Pavel Raiskup <praiskup@redhat.com> - 10.5-1
+- update to 10.5 per release notes:
+  https://www.postgresql.org/docs/10/static/release-10-5.html
+
+* Fri Jul 13 2018 Pavel Raiskup <praiskup@redhat.com> - 10.4-2
+- ABI/symbol versioning
+
+* Thu Jul 12 2018 Pavel Raiskup <praiskup@redhat.com> - 10.4-1
+- rebase to the latest upstream release
+
+* Fri Apr 13 2018 Pavel Raiskup <praiskup@redhat.com> - 10.3-1
+- initial release, packaging inspired by postgresql.spec
+- provide postgresql-devel to avoid fixing all the client packages