Merge pull request #11 from fpistm/fix

Add configUSE_NEWLIB_REENTRANT

Author: fpistm

portable/MemMang/heap_useNewlib.c

@@ -127,7 +127,7 @@ void *__wrap_malloc(size_t nbytes) {
     void *p = __real_malloc(nbytes); // Solely for debug breakpoint...
     return p;
 };
-void *__wrap__malloc_r(void *reent, size_t nbytes) {
+void *__wrap__malloc_r(void *reent __attribute__((__unused__)), size_t nbytes) {
     extern void * __real__malloc_r(size_t nbytes);
     void *p = __real__malloc_r(nbytes); // Solely for debug breakpoint...
     return p;

src/FreeRTOSConfig_Default.h

@@ -126,6 +126,18 @@ extern char _Min_Stack_Size; /* Defined in the linker script */
 #define configUSE_APPLICATION_TASK_TAG    0
 #define configUSE_COUNTING_SEMAPHORES     1
 #define configGENERATE_RUN_TIME_STATS     0
+/*
+ * If configUSE_NEWLIB_REENTRANT is set to 1 then a newlib reent structure
+ * will be allocated for each created task.
+ *
+ * Note Newlib support has been included by popular demand, but is not used
+ * by the FreeRTOS maintainers themselves. FreeRTOS is not responsible for
+ * resulting newlib operation. User must be familiar with newlib and must
+ * provide system-wide implementations of the necessary stubs.
+ * Be warned that (at the time of writing) the current newlib design implements
+ * a system-wide malloc() that must be provided with locks.
+ */
+#define configUSE_NEWLIB_REENTRANT        1
 
 /* Co-routine definitions. */
 #define configUSE_CO_ROUTINES           0