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-rw-r--r--doc/src/sgml/installation.sgml2
1 files changed, 1 insertions, 1 deletions
diff --git a/doc/src/sgml/installation.sgml b/doc/src/sgml/installation.sgml
index 1b32d5ca62c..c39bcb3ee7c 100644
--- a/doc/src/sgml/installation.sgml
+++ b/doc/src/sgml/installation.sgml
@@ -1937,7 +1937,7 @@ build-postgresql:
it will break many of <filename>configure</filename>'s built-in tests. To add
such flags, include them in the <envar>COPT</envar> environment variable
while running <filename>make</filename>. The contents of <envar>COPT</envar>
- are added to both the <envar>CFLAGS</envar> and <envar>LDFLAGS</envar>
+ are added to the <envar>CFLAGS</envar>, <envar>CXXFLAGS</envar>, and <envar>LDFLAGS</envar>
options set up by <filename>configure</filename>. For example, you could do
<screen>
<userinput>make COPT='-Werror'</userinput>