From f1b5c326f413beb6adc367861975fd94506a2056 Mon Sep 17 00:00:00 2001
From: Renz Christian Bagaporo <renz@espressif.com>
Date: Tue, 17 Sep 2019 18:07:47 +0800
Subject: [PATCH] cxx: force pthread to appear later in link line

---
 components/cxx/CMakeLists.txt | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/components/cxx/CMakeLists.txt b/components/cxx/CMakeLists.txt
index 4e81992ad..ff2d0e438 100644
--- a/components/cxx/CMakeLists.txt
+++ b/components/cxx/CMakeLists.txt
@@ -1,9 +1,17 @@
 idf_component_register(SRCS "cxx_exception_stubs.cpp"
-                            "cxx_guards.cpp")
+                            "cxx_guards.cpp"
+                        # Make sure that pthread is in component list
+                        PRIV_REQUIRES pthread)
 
 target_link_libraries(${COMPONENT_LIB} PUBLIC stdc++ gcc)
 target_link_libraries(${COMPONENT_LIB} INTERFACE "-u __cxa_guard_dummy")
 
+# Force pthread to also appear later than stdc++ in link line
+add_library(stdcpp_pthread INTERFACE)
+idf_component_get_property(pthread pthread COMPONENT_LIB)
+target_link_libraries(stdcpp_pthread INTERFACE stdc++ $<TARGET_FILE:${pthread}>)
+target_link_libraries(${COMPONENT_LIB} PUBLIC stdcpp_pthread)
+
 if(NOT CONFIG_COMPILER_CXX_EXCEPTIONS)
     target_link_libraries(${COMPONENT_LIB} INTERFACE "-u __cxx_fatal_exception")
 endif()