--- configure.orig	2018-01-23 01:54:25 -0600
+++ configure	2018-01-23 01:55:46 -0600
@@ -6801,8 +6801,8 @@
     CPPFLAGS="-I$with_libssh2/include $CPPFLAGS"
     LDFLAGS="-L$with_libssh2/lib $LDFLAGS"
 
-    ac_fn_c_check_header_compile "$LINENO" "libssh2.h" "ac_cv_header_libssh2_h" "-lm
-"
+    ac_fn_c_check_header_compile "$LINENO" "libssh2.h" "ac_cv_header_libssh2_h" "$ac_includes_default"
+
 if test "x$ac_cv_header_libssh2_h" = xyes; then :
 
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking for libssh2_version in -lssh2" >&5