From 79edda38742b37603ccd48dd8660ff7fcfca293e Mon Sep 17 00:00:00 2001
From: Guillaume Le Vaillant <glv@posteo.net>
Date: Sun, 5 Sep 2021 11:48:59 +0200
Subject: gnu: opencpn: Fix building with gcc 10.

* gnu/packages/geo.scm (opencpn)[arguments]: Pass '-fcommon' to CFLAGS.
---
 gnu/packages/geo.scm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/geo.scm b/gnu/packages/geo.scm
index e2d34f12a2..0276bf5c16 100644
--- a/gnu/packages/geo.scm
+++ b/gnu/packages/geo.scm
@@ -1885,7 +1885,8 @@ exchanged form one Spatial DBMS and the other.")
      `(#:configure-flags '("-DENABLE_PORTAUDIO=ON"
                            "-DENABLE_SNDFILE=ON"
                            "-DBUNDLE_TCDATA=ON"
-                           "-DBUNDLE_GSHHS=CRUDE")
+                           "-DBUNDLE_GSHHS=CRUDE"
+                           "-DCMAKE_C_FLAGS=-fcommon")
        #:tests? #f ; No tests defined
        #:phases
        (modify-phases %standard-phases
-- 
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