Merge pull request #320 from bhundven/newlib_updates

Newlib updates

config/libc/newlib.in

@@ -17,7 +17,7 @@ config LIBC_NEWLIB_CUSTOM
     bool
     prompt "Custom newlib"
     depends on EXPERIMENTAL
-    select LIBC_NEWLIB_2_2_or_later
+    select LIBC_NEWLIB_2_3_or_later
     help
       The choosen newlib version shall be not downloaded. Instead use
       a custom location to get the source.
@@ -71,6 +71,11 @@ choice
 # Don't remove next line
 # CT_INSERT_VERSION_BELOW
 
+config LIBC_NEWLIB_V_2_3_0
+    bool
+    prompt "2.3.0.20160226"
+    select LIBC_NEWLIB_2_3
+
 config LIBC_NEWLIB_LINARO_V_2_2_0
     bool
     prompt "Linaro 2.2.0-2015.01"
@@ -79,7 +84,7 @@ config LIBC_NEWLIB_LINARO_V_2_2_0
 
 config LIBC_NEWLIB_V_2_2_0
     bool
-    prompt "2.2.0"
+    prompt "2.2.0.20151023"
     select LIBC_NEWLIB_2_2
 
 config LIBC_NEWLIB_LINARO_V_2_1_0
@@ -118,6 +123,10 @@ endchoice
 
 endif # ! LIBC_NEWLIB_CUSTOM
 
+config LIBC_NEWLIB_2_3
+    bool
+    select LIBC_NEWLIB_2_3_or_later
+
 config LIBC_NEWLIB_2_2
     bool
     select LIBC_NEWLIB_2_2_or_later
@@ -130,6 +139,10 @@ config LIBC_NEWLIB_2_0
     bool
     select LIBC_NEWLIB_2_0_or_later
 
+config LIBC_NEWLIB_2_3_or_later
+    bool
+    select LIBC_NEWLIB_2_2_or_later
+
 config LIBC_NEWLIB_2_2_or_later
     bool
     select LIBC_NEWLIB_2_1_or_later
@@ -149,8 +162,9 @@ config LIBC_VERSION
     string
 # Don't remove next line
 # CT_INSERT_VERSION_STRING_BELOW
+    default "2.3.0.20160226" if LIBC_NEWLIB_V_2_3_0
     default "linaro-2.2.0-2015.01" if LIBC_NEWLIB_LINARO_V_2_2_0
-    default "2.2.0" if LIBC_NEWLIB_V_2_2_0
+    default "2.2.0.20151023" if LIBC_NEWLIB_V_2_2_0
     default "linaro-2.1.0-2014.09" if LIBC_NEWLIB_LINARO_V_2_1_0
     default "2.1.0" if LIBC_NEWLIB_V_2_1_0
     default "2.0.0" if LIBC_NEWLIB_V_2_0_0

config/libc/newlib.in.2

@@ -44,6 +44,27 @@ config LIBC_NEWLIB_ENABLE_TARGET_OPTSPACE
       
       This will compile newlib with -Os.
 
+config LIBC_NEWLIB_NANO_MALLOC
+    bool
+    prompt "Enable Nano Malloc"
+    depends on LIBC_NEWLIB_2_1_or_later
+    help
+      NEWLIB has two implementations of malloc family's functions, one in
+      `mallocr.c' and the other one in `nano-mallocr.c'.  This options
+      enables the nano-malloc implementation, which is for small systems
+      with very limited memory.  Note that this implementation does not
+      support `--enable-malloc-debugging' any more.
+
+config LIBC_NEWLIB_NANO_FORMATTED_IO
+    bool
+    prompt "Enable Nano Formatted I/O"
+    depends on LIBC_NEWLIB_2_2_or_later
+    help
+      This builds NEWLIB with a special implementation of formatted I/O
+      functions, designed to lower the size of application on small systems
+      with size constraint issues.  This option does not affect wide-char
+      formatted I/O functions.
+
 config LIBC_NEWLIB_EXTRA_CONFIG_ARRAY
     string
     prompt "Extra config for newlib"

scripts/build/libc/newlib.sh

@@ -65,6 +65,11 @@ do_libc() {
 
     CT_DoLog EXTRA "Configuring C library"
 
+    # Multilib is the default, so if it is not enabled, disable it.
+    if [ "${CT_MULTILIB}" != "y" ]; then
+        extra_config+=("--disable-multilib")
+    fi
+
     if [ "${CT_LIBC_NEWLIB_IO_C99FMT}" = "y" ]; then
         newlib_opts+=( "--enable-newlib-io-c99-formats" )
     else
@@ -91,6 +96,12 @@ do_libc() {
     else
         newlib_opts+=( "--enable-newlib-supplied-syscalls" )
     fi
+    if [ "${CT_LIBC_NEWLIB_NANO_MALLOC}" = "y" ]; then
+        newlib_opts+=( "--enable-newlib-nano-malloc" )
+    fi
+    if [ "${CT_LIBC_NEWLIB_NANO_FORMATTED_IO}" = "y" ]; then
+        newlib_opts+=( "--enable-newlib-nano-formatted-io" )
+    fi
 
     [ "${CT_LIBC_NEWLIB_ENABLE_TARGET_OPTSPACE}" = "y" ] && newlib_opts+=("--enable-target-optspace")