[smuxi: 19/37] configure.ac: disable STFL frontend by default in macOS

[Mirco M. M. Bauer <mmmbauer src gnome org>]

commit 5ccacff97139e39ced654c3f8dbcf66cb6b2154e
Author: Andres G. Aragoneses <knocte gmail com>
Date:   Sat Apr 11 00:50:14 2020 +0800

    configure.ac: disable STFL frontend by default in macOS

 configure.ac | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/configure.ac b/configure.ac
index 9ddfab1d..b65170b9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -689,6 +689,10 @@ AC_ARG_ENABLE([frontend-stfl],
        ENABLE_FRONTEND_STFL=$enableval,
        ENABLE_FRONTEND_STFL=yes
 )
+if test "x$(uname)" = "xDarwin"; then
+       ENABLE_FRONTEND_STFL=no
+fi
+
 if test "x$ENABLE_FRONTEND_STFL" != "xno"; then
        PKG_CHECK_MODULES([STFL], [stfl >= 0.21])
 fi