From: Alberto Garcia <berto@igalia.com>
Date: Wed, 10 Jan 2018 12:23:33 +0000 (+0000)
Subject: Build wtf/Atomics.cpp only if needed
X-Git-Tag: archive/raspbian/2.18.5-1+rpi1^2~6
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=729f37062e2508f7a37a6a6f66a605f423a04171;p=webkit2gtk.git

Build wtf/Atomics.cpp only if needed

===================================================================

Gbp-Pq: Name fix-ftbfs-armel.patch
---

diff --git a/Source/WTF/wtf/CMakeLists.txt b/Source/WTF/wtf/CMakeLists.txt
index e29f6ee947..b66ce8945c 100644
--- a/Source/WTF/wtf/CMakeLists.txt
+++ b/Source/WTF/wtf/CMakeLists.txt
@@ -206,7 +206,6 @@ set(WTF_HEADERS
 
 set(WTF_SOURCES
     Assertions.cpp
-    Atomics.cpp
     AutomaticThread.cpp
     BitVector.cpp
     CPUTime.cpp
@@ -338,6 +337,16 @@ if (NOT USE_SYSTEM_MALLOC)
     list(APPEND WTF_LIBRARIES bmalloc)
 endif ()
 
+file(WRITE ${CMAKE_BINARY_DIR}/test_atomics.cpp
+     "int main(void)\n"
+     "{ long long x = 1; return (int) __sync_add_and_fetch_8(&x, 1); }\n")
+try_compile(ATOMICS_BUILD_SUCCEEDED ${CMAKE_BINARY_DIR} ${CMAKE_BINARY_DIR}/test_atomics.cpp)
+message(STATUS "Found __sync_add_and_fetch_8(): ${ATOMICS_BUILD_SUCCEEDED}")
+if (NOT ATOMICS_BUILD_SUCCEEDED)
+    list(APPEND WTF_SOURCES Atomics.cpp)
+endif ()
+file(REMOVE ${CMAKE_BINARY_DIR}/test_atomics.cpp)
+
 list(APPEND WTF_SOURCES
     unicode/icu/CollatorICU.cpp
 )