From 13f138284f04590d0248e8306add4566a5ad1d1c Mon Sep 17 00:00:00 2001
From: Marven Gilhespie <45208741+marvensilabs@users.noreply.github.com>
Date: Mon, 28 Oct 2019 21:07:47 +0000
Subject: [PATCH] [efr32] move __START definition to Makefile-efr32mgxx
 makefiles (#4278)

Allows external projects to use SDK library generated in OpenThread
with constructors called at startup.
---
 examples/Makefile-efr32mg12              | 1 +
 examples/Makefile-efr32mg21              | 1 +
 examples/platforms/efr32mg12/Makefile.am | 2 --
 examples/platforms/efr32mg21/Makefile.am | 2 --
 third_party/silabs/Makefile.am           | 1 -
 5 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/examples/Makefile-efr32mg12 b/examples/Makefile-efr32mg12
index 1ae13174f..4298d0f12 100644
--- a/examples/Makefile-efr32mg12
+++ b/examples/Makefile-efr32mg12
@@ -112,6 +112,7 @@ COMMONCFLAGS                       := \
     -Os                               \
     -g                                \
     -I$(HAL_CONF_DIR)                 \
+    -D__START=main                    \
     -D$(MCU)                          \
     $(EFR32MG12_CONFIG_FILE_CPPFLAGS) \
     $(NULL)
diff --git a/examples/Makefile-efr32mg21 b/examples/Makefile-efr32mg21
index 5ff23a899..f50ef7f32 100644
--- a/examples/Makefile-efr32mg21
+++ b/examples/Makefile-efr32mg21
@@ -98,6 +98,7 @@ COMMONCFLAGS                       := \
     -Os                               \
     -g                                \
     -I$(HAL_CONF_DIR)                 \
+    -D__START=main                    \
     -D$(MCU)                          \
     $(EFR32MG21_CONFIG_FILE_CPPFLAGS) \
     $(NULL)
diff --git a/examples/platforms/efr32mg12/Makefile.am b/examples/platforms/efr32mg12/Makefile.am
index 54b52da2b..023ff760a 100644
--- a/examples/platforms/efr32mg12/Makefile.am
+++ b/examples/platforms/efr32mg12/Makefile.am
@@ -43,8 +43,6 @@ EFR32_BOARD_DIR                               = $(shell echo $(BOARD) | tr A-Z a
 EFR32MG_SDK_SRCDIR                            = $(top_srcdir)/third_party/silabs/gecko_sdk_suite/v2.6
 
 libopenthread_efr32mg12_a_CPPFLAGS                                            = \
-    -D__START=main                                                              \
-    -D__STARTUP_CLEAR_BSS                                                       \
     -DPLATFORM_HEADER=\"@top_builddir@/third_party/silabs/gecko_sdk_suite/v2.6/platform/base/hal/micro/cortexm3/compiler/gcc.h\" \
     -DNVIC_CONFIG=\"platform/base/hal/micro/cortexm3/efm32/nvic-config.h\"      \
     -Wno-sign-compare                                                           \
diff --git a/examples/platforms/efr32mg21/Makefile.am b/examples/platforms/efr32mg21/Makefile.am
index 1edd73f6c..75fa001ab 100644
--- a/examples/platforms/efr32mg21/Makefile.am
+++ b/examples/platforms/efr32mg21/Makefile.am
@@ -43,8 +43,6 @@ EFR32_BOARD_DIR                               = $(shell echo $(BOARD) | tr A-Z a
 EFR32MG_SDK_SRCDIR                            = $(top_srcdir)/third_party/silabs/gecko_sdk_suite/v2.6
 
 libopenthread_efr32mg21_a_CPPFLAGS                                            = \
-    -D__START=main                                                              \
-    -D__STARTUP_CLEAR_BSS                                                       \
     -DPLATFORM_HEADER=\"@top_builddir@/third_party/silabs/gecko_sdk_suite/v2.6/platform/base/hal/micro/cortexm3/compiler/gcc.h\" \
     -Wno-sign-compare                                                           \
     -DCORTEXM3                                                                  \
diff --git a/third_party/silabs/Makefile.am b/third_party/silabs/Makefile.am
index 93ef8a6e8..627e0cbc3 100644
--- a/third_party/silabs/Makefile.am
+++ b/third_party/silabs/Makefile.am
@@ -57,7 +57,6 @@ EFR32_BOARD_DIR                             = $(shell echo $(BOARD) | tr A-Z a-z
 EFR32MG_SDK_SRCDIR                            = $(top_srcdir)/third_party/silabs/gecko_sdk_suite/v2.6
 
 COMMONCPPFLAGS                                                                                = \
-    -D__START=main                                                                              \
     -D__STARTUP_CLEAR_BSS                                                                       \
     -I$(srcdir)                                                                                 \
     -I$(top_srcdir)/include                                                                     \