2 files changed, 30 insertions, 0 deletions
diff --git a/doc/src/sgml/ecpg.sgml b/doc/src/sgml/ecpg.sgml
index 4d904cdeb88..68bcb13ca04 100644
--- a/doc/src/sgml/ecpg.sgml
+++ b/doc/src/sgml/ecpg.sgml
@@ -5715,6 +5715,15 @@ cc -o myprog prog1.o prog2.o ... -lecpg
   </para>
 
   <para>
+   You can
+   use <command>pg_config</command><indexterm><primary>pg_config</primary><secondary sortas="ecpg">with
+   ecpg</secondary></indexterm>
+   or <command>pkg-config</command><indexterm><primary>pkg-config</primary><secondary sortas="ecpg">with
+   ecpg</secondary></indexterm> with package name <literal>libecpg</literal> to
+   get the paths for your installation.
+  </para>
+
+  <para>
    If you manage the build process of a larger project using
    <application>make</application>, it might be convenient to include
    the following implicit rule to your makefiles:
diff --git a/doc/src/sgml/libpq.sgml b/doc/src/sgml/libpq.sgml
index 1a09c1cb8da..3b6ada08f7c 100644
--- a/doc/src/sgml/libpq.sgml
+++ b/doc/src/sgml/libpq.sgml
@@ -7641,6 +7641,18 @@ CPPFLAGS += -I/usr/local/pgsql/include
      </para>
 
      <para>
+      If you
+      have <command>pkg-config</command><indexterm><primary>pkg-config</primary><secondary sortas="libpq">with
+      libpq</secondary></indexterm> installed, you can run instead:
+<screen>
+<prompt>$</prompt> pkg-config --cflags libpq
+<computeroutput>-I/usr/local/include</computeroutput>
+</screen>
+      Note that this will already include the <option>-I</option> in front of
+      the path.
+     </para>
+
+     <para>
       Failure to specify the correct option to the compiler will
       result in an error message such as:
 <screen>
@@ -7675,6 +7687,15 @@ cc -o testprog testprog1.o testprog2.o -L/usr/local/pgsql/lib -lpq
      </para>
 
      <para>
+      Or again use <command>pkg-config</command>:
+<screen>
+<prompt>$</prompt> pkg-config --libs libpq
+<computeroutput>-L/usr/local/pgsql/lib -lpq</computeroutput>
+</screen>
+      Note again that this prints the full options, not only the path.
+     </para>
+
+     <para>
       Error messages that point to problems in this area could look like
       the following:
 <screen>