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path: root/src/backend/optimizer/geqo/geqo_mutation.c
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Diffstat (limited to 'src/backend/optimizer/geqo/geqo_mutation.c')
-rw-r--r--src/backend/optimizer/geqo/geqo_mutation.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/backend/optimizer/geqo/geqo_mutation.c b/src/backend/optimizer/geqo/geqo_mutation.c
index 1a06d497757..c6af00a2a76 100644
--- a/src/backend/optimizer/geqo/geqo_mutation.c
+++ b/src/backend/optimizer/geqo/geqo_mutation.c
@@ -35,6 +35,8 @@
#include "optimizer/geqo_mutation.h"
#include "optimizer/geqo_random.h"
+#if defined(CX) /* currently used only in CX mode */
+
void
geqo_mutation(PlannerInfo *root, Gene *tour, int num_gene)
{
@@ -60,3 +62,5 @@ geqo_mutation(PlannerInfo *root, Gene *tour, int num_gene)
num_swaps -= 1;
}
}
+
+#endif /* defined(CX) */