Missing math library during linking [Bug #9856].

ChangeLog

@@ -5,6 +5,7 @@
 
 2020-08-16 Matthew Krupcale
 
+	* Missing math library during linking [Bug #9856]
 	* Fix incorrect detection and usage of netcdf_par.h during configure [Bug #9855]
 
 2020-08-09 Uwe Schulzweida

configure.ac

@@ -144,6 +144,9 @@ AC_DEFINE_UNQUOTED(COMP_VERSION, ["$COMP_VERSION"], [Compiler version])
 # Check for system type
 AC_DEFINE_UNQUOTED([SYSTEM_TYPE],["$ac_cv_build"], [System type])
 AC_SUBST([SYSTEM_TYPE],["$ac_cv_build"])
+# -----------------------------------------------------------------------
+# Check for math library and add -lm to LIBS
+AC_SEARCH_LIBS(floor, m)
 #  ----------------------------------------------------------------------
 # Add basic configure options
 ACX_CDI_OPTIONS