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-rw-r--r--source/html/html-layout.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/source/html/html-layout.c b/source/html/html-layout.c
index 8caf7e34..b4ec17a0 100644
--- a/source/html/html-layout.c
+++ b/source/html/html-layout.c
@@ -6,6 +6,8 @@
#include "hb-ft.h"
#include <ft2build.h>
+#include <math.h>
+
#undef DEBUG_HARFBUZZ
enum { T, R, B, L };