From 9dd134c19d5ef12a2663e301cdf3ae339062e742 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?William=20Sj=C3=B6blom?= <wilsj@cendio.com>
Date: Thu, 21 Oct 2021 10:27:37 +0200
Subject: [PATCH] Only use macOS sheet modals when compiler supports blocks

Blocks are a non-standard extension and is not supported by GCC. Sheet
modals require blocks, so let's fall back on a regular modal when blocks
are not supported.
---
 src/Fl_Native_File_Chooser_MAC.mm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Fl_Native_File_Chooser_MAC.mm b/src/Fl_Native_File_Chooser_MAC.mm
index eb09f1c402..9c4b8b8e3b 100644
--- a/src/Fl_Native_File_Chooser_MAC.mm
+++ b/src/Fl_Native_File_Chooser_MAC.mm
@@ -602,7 +602,7 @@ - (void) option:(BOOL)o
     fname = [preset lastPathComponent];
   }
   if (_directory && !dir) dir = [[NSString alloc] initWithUTF8String:_directory];
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6 && defined(__BLOCKS__)
   if (fl_mac_os_version >= 100600) {
     bool usepath = false;
     NSString *path = nil;