From 053b05f185f87cd2e5b291e5d23df58128c4d789 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Csaba=20Osztrogon=C3=A1c?= <oszi@inf.u-szeged.hu>
Date: Mon, 23 Sep 2019 14:56:11 +0200
Subject: [PATCH] Fix Cygwin build (#3147)
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Fixes #3142.

Changes:
- Disable LTO on Cygwin build because of a Cygwin-ld bug.
- Don't add "-z noexecstack" to ld because it is ELF specific option.

JerryScript-DCO-1.0-Signed-off-by: Csaba Osztrogonác oszi@inf.u-szeged.hu
---
 CMakeLists.txt | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 100b16032..c37734d12 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -100,6 +100,12 @@ if(USING_MSVC)
   set(ENABLE_STRIP_MESSAGE       " (FORCED BY COMPILER)")
 endif()
 
+if(CYGWIN)
+  set(ENABLE_LTO         OFF)
+
+  set(ENABLE_LTO_MESSAGE         " (FORCED BY PLATFORM)")
+endif()
+
 # Status messages
 message(STATUS "CMAKE_BUILD_TYPE            " ${CMAKE_BUILD_TYPE})
 message(STATUS "CMAKE_C_COMPILER_ID         " ${CMAKE_C_COMPILER_ID})
@@ -179,7 +185,7 @@ if("${PLATFORM}" STREQUAL "DARWIN")
   set(CMAKE_C_ARCHIVE_CREATE "<CMAKE_AR> Sqc <TARGET> <LINK_FLAGS> <OBJECTS>")
   set(CMAKE_C_ARCHIVE_FINISH "<CMAKE_RANLIB> -no_warning_for_no_symbols -c <TARGET>")
   set(CMAKE_SHARED_LINKER_FLAGS  "-undefined dynamic_lookup")
-elseif(USING_GCC OR USING_CLANG)
+elseif(NOT CYGWIN AND (USING_GCC OR USING_CLANG))
   jerry_add_link_flags(-Wl,-z,noexecstack)
 endif()