Add example for pg_config --configure.

diff --git a/doc/src/sgml/ref/pg_config-ref.sgml b/doc/src/sgml/ref/pg_config-ref.sgml
index ea48699eb48ed3cab3265eb2e087de41cbce1e34..db09883902fae5783de7652a8f57eeb3e80e4fe5 100644 (file)
--- a/doc/src/sgml/ref/pg_config-ref.sgml
+++ b/doc/src/sgml/ref/pg_config-ref.sgml
@@ -1,4 +1,4 @@
-
+
 
 
  
@@ -119,7 +119,7 @@
        This can be used to reproduce the identical configuration, or
        to find out with what options a binary package was built. (Note
        however that binary packages often contain vendor-specific custom
-       patches.)
+       patches.)  See also the examples below.
       
      
     
@@ -160,6 +160,22 @@
  
 
 
+ 
+  Example
+
+  
+   To reproduce the build configuration of the current PostgreSQL
+   installation, run the following command:
+
+eval ./configure `pg_config --configure`
+
+   The output of pg_config --configure contains
+   shell quotation marks so arguments with spaces are represented
+   correctly.  Therefore, using eval is required
+   for proper results.
+  
+ 
+
  
   History