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-rw-r--r--gnu/packages/image-viewers.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/gnu/packages/image-viewers.scm b/gnu/packages/image-viewers.scm
index d1d6e2910b..d750458240 100644
--- a/gnu/packages/image-viewers.scm
+++ b/gnu/packages/image-viewers.scm
@@ -315,7 +315,7 @@ actions.")
     (build-system gnu-build-system)
     (arguments
      ;; Enable support for a "map" pane using GPS data.
-     `(#:configure-flags '("CFLAGS=-fcommon"
+     `(#:configure-flags '("CFLAGS=-O2 -g -fcommon"
                            "--enable-map"
                            "--enable-gtk3")
        #:phases (modify-phases %standard-phases