1 files changed, 8 insertions, 1 deletions
diff --git a/configure b/configure
index 7d2fe7aee..1c35ee2e5 100755
--- a/configure
+++ b/configure
@@ -808,7 +808,14 @@ else
   fi
 fi
 
-# For the sys module
+# For the Pervasives module
+
+if sh ./trycompile expm1.c $mathlib; then
+  echo "expm1() and log1p() found."
+  echo "#define HAS_EXPM1_LOG1P" >> s.h
+fi
+
+# For the Sys module
 
 if sh ./hasgot getrusage; then
   echo "getrusage() found."