+if (%tlssupport%) == (N) goto tlsDone\r
+\r
+rem this is a copy of the PNG detection\r
+echo Checking for libgnutls...\r
+echo #include "gnutls/gnutls.h" >junk.c\r
+echo main (){} >>junk.c\r
+rem -o option is ignored with cl, but allows result to be consistent.\r
+echo %COMPILER% %usercflags% %mingwflag% -c junk.c -o junk.obj >>config.log\r
+%COMPILER% %usercflags% %mingwflag% -c junk.c -o junk.obj >junk.out 2>>config.log\r
+if exist junk.obj goto haveTls\r
+\r
+echo ...gnutls.h not found, building without TLS support.\r
+echo The failed program was: >>config.log\r
+type junk.c >>config.log\r
+set HAVE_GNUTLS=\r
+goto :tlsDone\r
+\r
+:haveTls\r
+echo ...GnuTLS header available, building with GnuTLS support.\r
+set HAVE_GNUTLS=1\r
+\r
+:tlsDone\r
+rm -f junk.c junk.obj\r
+\r