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-rw-r--r--CMakeLists.txt1
1 files changed, 1 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt
index a7d13777..16daa8d5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -536,6 +536,7 @@ CHECK_SYMBOL_EXISTS(lrintf math.h HAVE_LRINTF)
CHECK_SYMBOL_EXISTS(modff math.h HAVE_MODFF)
CHECK_SYMBOL_EXISTS(log2f math.h HAVE_LOG2F)
CHECK_SYMBOL_EXISTS(cbrtf math.h HAVE_CBRTF)
+CHECK_SYMBOL_EXISTS(copysignf math.h HAVE_COPYSIGNF)
IF(HAVE_FLOAT_H)
CHECK_SYMBOL_EXISTS(_controlfp float.h HAVE__CONTROLFP)