From b145ab4273c59f4f908cdaff9e267241bd970e93 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Mon, 3 Feb 2020 17:06:27 -0800
Subject: [PATCH] Enable THREADS_PREFER_PTHREAD_FLAG

Fixes build failures on risv64

Taken from https://trac.webkit.org/changeset/231843/webkit

 Enable THREADS_PREFER_PTHREAD_FLAG. This uses -pthread instead of
-lpthread, fixing the 64-bit RISC-V build of the GTK+ port due to
missing atomic primitives.

Upstream-Status: Submitted [https://trac.webkit.org/changeset/231843/webkit]
Signed-off-by: Khem Raj <raj.khem@gmail.com>

---
 Source/cmake/OptionsGTK.cmake     | 1 +
 Source/cmake/OptionsJSCOnly.cmake | 1 +
 2 files changed, 2 insertions(+)

diff --git a/Source/cmake/OptionsGTK.cmake b/Source/cmake/OptionsGTK.cmake
index 8732e935..9b4fbae7 100644
--- a/Source/cmake/OptionsGTK.cmake
+++ b/Source/cmake/OptionsGTK.cmake
@@ -32,6 +32,7 @@ set(USER_AGENT_BRANDING "" CACHE STRING "Branding to add to user agent string")
 if (USER_AGENT_BRANDING)
     add_definitions(-DUSER_AGENT_BRANDING="${USER_AGENT_BRANDING}")
 endif ()
+set(THREADS_PREFER_PTHREAD_FLAG ON)
 
 find_package(Cairo 1.14.0 REQUIRED)
 find_package(Fontconfig 2.8.0 REQUIRED)
diff --git a/Source/cmake/OptionsJSCOnly.cmake b/Source/cmake/OptionsJSCOnly.cmake
index 316c6240..2f712602 100644
--- a/Source/cmake/OptionsJSCOnly.cmake
+++ b/Source/cmake/OptionsJSCOnly.cmake
@@ -1,3 +1,4 @@
+set(THREADS_PREFER_PTHREAD_FLAG ON)
 find_package(Threads REQUIRED)
 
 if (MSVC)