[efr32] remove -nostartfiles to use Newlib _start (openthread#5905)

Remove -nostartfiles. There's currently no custom __START defined anywhere. Remove -D__STARTUP_CLEAR_BSS for silabs. Standard initialization should already take care of this.
edmont · Dec 2, 2020 · da6662c · da6662c
1 parent 8f2e113
commit da6662c
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diff --git a/examples/Makefile-efr32mg1 b/examples/Makefile-efr32mg1
@@ -96,7 +96,6 @@ COMMONCFLAGS                       := \
     -Os                               \
     -g                                \
     -I$(HAL_CONF_DIR)                 \
-    -D__START=main                    \
     -D$(MCU)                          \
     $(EFR32_CONFIG_FILE_CPPFLAGS)     \
     $(NULL)
@@ -138,7 +137,6 @@ CXXFLAGS                       += \
 LDFLAGS                        += \
     $(COMMONCFLAGS)               \
     $(target_LDFLAGS)             \
-    -nostartfiles                 \
     -specs=nano.specs             \
     -specs=nosys.specs            \
     -Wl,--gc-sections             \

diff --git a/examples/Makefile-efr32mg12 b/examples/Makefile-efr32mg12
@@ -114,7 +114,6 @@ COMMONCFLAGS                       := \
     -Os                               \
     -g                                \
     -I$(HAL_CONF_DIR)                 \
-    -D__START=main                    \
     -D$(MCU)                          \
     $(EFR32_CONFIG_FILE_CPPFLAGS)     \
     $(NULL)
@@ -156,7 +155,6 @@ CXXFLAGS                       += \
 LDFLAGS                        += \
     $(COMMONCFLAGS)               \
     $(target_LDFLAGS)             \
-    -nostartfiles                 \
     -specs=nano.specs             \
     -specs=nosys.specs            \
     -Wl,--gc-sections             \

diff --git a/examples/Makefile-efr32mg13 b/examples/Makefile-efr32mg13
@@ -100,7 +100,6 @@ COMMONCFLAGS                       := \
     -Os                               \
     -g                                \
     -I$(HAL_CONF_DIR)                 \
-    -D__START=main                    \
     -D$(MCU)                          \
     $(EFR32_CONFIG_FILE_CPPFLAGS)     \
     $(NULL)
@@ -142,7 +141,6 @@ CXXFLAGS                       += \
 LDFLAGS                        += \
     $(COMMONCFLAGS)               \
     $(target_LDFLAGS)             \
-    -nostartfiles                 \
     -specs=nano.specs             \
     -specs=nosys.specs            \
     -Wl,--gc-sections             \

diff --git a/examples/Makefile-efr32mg21 b/examples/Makefile-efr32mg21
@@ -106,7 +106,6 @@ COMMONCFLAGS                       := \
     -Os                               \
     -g                                \
     -I$(HAL_CONF_DIR)                 \
-    -D__START=main                    \
     -D$(MCU)                          \
     $(EFR32_CONFIG_FILE_CPPFLAGS)     \
     $(NULL)
@@ -148,7 +147,6 @@ CXXFLAGS                       += \
 LDFLAGS                        += \
     $(COMMONCFLAGS)               \
     $(target_LDFLAGS)             \
-    -nostartfiles                 \
     -specs=nano.specs             \
     -specs=nosys.specs            \
     -Wl,--gc-sections             \

diff --git a/third_party/silabs/Makefile.am b/third_party/silabs/Makefile.am
@@ -165,7 +165,6 @@ libsilabs_mbedtls_a_SOURCES                                                   =
 # =============================================================================
 
 COMMONCPPFLAGS                                                                = \
-    -D__STARTUP_CLEAR_BSS                                                       \
     -I$(srcdir)                                                                 \
     -I$(top_srcdir)/include                                                     \
     -I$(top_srcdir)/src/core                                                    \