build: set expected sysconfdir in libpq shipped with the binary package

This affects where the pg_service.conf file is looked for.

See https://github.com/psycopg/psycopg2/issues/1365

diff --git a/tools/build/build_libpq.sh b/tools/build/build_libpq.sh
index 21b7f325a530099f1ff394455777173161627777..06360117bdacd448413d0777ddd409037db2c9a6 100755 (executable)
--- a/tools/build/build_libpq.sh
+++ b/tools/build/build_libpq.sh
@@ -110,8 +110,8 @@ if [ ! -d "${postgres_dir}" ]; then
         export LD_LIBRARY_PATH=/usr/local/lib
     fi
 
-    ./configure --prefix=/usr/local --without-readline \
-        --with-gssapi --with-openssl --with-pam --with-ldap
+    ./configure --prefix=/usr/local --sysconfdir=/etc/postgresql-common \
+        --without-readline --with-gssapi --with-openssl --with-pam --with-ldap
     make -C src/interfaces/libpq
     make -C src/bin/pg_config
     make -C src/include