Updated instructions

OAR/README.md

@@ -90,7 +90,10 @@ To use emulation (default, if `FPU` option is not provided), pass `FPU=0`:
 
 The `FPU` and `CFG` options are completely independent ; you can e.g.
 compile a debug version that uses native FPU, and a release one that uses
-emulation.
+emulation. Just keep in mind that currently, 4.11 
+[does not allow you to use the same BSP](https://lists.rtems.org/pipermail/users/2016-February/029782.html),
+for both native and emulated FPU usage ; you'll have to build separate
+BSPs by tweaking the `leon2.cfg`/`leon3.cfg` files when you build RTEMS.
 
 ## Select Leon target
 
@@ -103,40 +106,35 @@ Use the `LEON` Makefile parameter to decide which target to build for
 
 Messages shown during compilation follow the semantics of the Linux kernel
 compilation process, emitting short messages by default (CC for compilation,
- LD for linking):
+ LD for linking). The compilation is also incremental, taking into account
+the modification timestamps of the files and their dependencies:
 
     $ touch src/task1.c
     $ make
-    [CC] objs.debug/FPU_task1.o
-    [LD] bin.debug/fputest
+    [CC] objs.debug.NONFPU.leon3/task1.o
+    [LD] bin.debug.NONFPU.leon3/fputest
 
-If you want to see the complete commands used, use `V=1`:
+If you want to see the complete commands used, pass `V=1`:
 
     $ touch src/task1.c
     $ make CFG=debug FPU=0 V=1
-    sparc-rtems4.8-gcc -c \
-        -B/home/user/development/rtems/sparc-rtems4.8/leon3/lib \
-        -specs bsp_specs -qrtems -nodefaultlibs -mcpu=cypress -DBSP_leon3 \
-        -g -Wall -D_DEBUG \
-        -I/home/user/development/build/rtems-impr/testsuites/support/include \
-        -I src -msoft-float -o objs.debug/FPU_task1.o src/task1.c
-    sparc-rtems4.8-gcc -g -o bin.debug/fputest objs.debug/NONFPU_init.o \
-        objs.debug/NONFPU_printk.o objs.debug/NONFPU_leon3.o \
-        objs.debug/FPU_task1.o -msoft-float \
-        -B/home/user/development/rtems/sparc-rtems4.8/leon3/lib \
-        -specs bsp_specs -qrtems -nodefaultlibs -mcpu=cypress -DBSP_leon3  \
-        -nodefaultlibs -Wl,--wrap,_IO_Initialize_all_drivers \
-        /home/user/development/rtems/sparc-rtems4.8/leon3/lib/libno_event.a \
-        /home/user/development/rtems/sparc-rtems4.8/leon3/lib/libno_msg.a \
-        /home/user/development/rtems/sparc-rtems4.8/leon3/lib/libno_sem.a \
-        /home/user/development/rtems/sparc-rtems4.8/leon3/lib/libno_timer.a \
-        /home/user/development/rtems/sparc-rtems4.8/leon3/lib/libno_rtmon.a \
-        /home/user/development/rtems/sparc-rtems4.8/leon3/lib/libno_ext.a \
-        -Wl,--start-group \
-        -lrtemscpu -lio -lno_event -lno_msg -lno_sem \
-        -lno_timer -lno_rtmon -lno_ext -lrtemsbsp -llibc -lrtemscpu \
-        -Wl,--end-group \
-        -Wl,--script=linkcmds -B/tmp/edilibtmp/edilib/library -lgcc
+    /opt/rtems-4.11-2016.04.01.NONFPU/bin/sparc-rtems4.11-gcc -c \
+        -B/opt/rtems-4.11-2016.04.01.NONFPU/sparc-rtems4.11/leon3/lib \
+        -specs bsp_specs -qrtems -mcpu=cypress -DBSP_leon3 -ffunction-sections \
+        -fdata-sections -Wall -Wmissing-prototypes \
+        -Wimplicit-function-declaration -Wstrict-prototypes -Wnested-externs \
+        -g -Wall -D_DEBUG -I src -msoft-float \
+        -o objs.debug.NONFPU.leon3/task1.o src/task1.c
+    /opt/rtems-4.11-2016.04.01.NONFPU/bin/sparc-rtems4.11-gcc -g \
+        -o bin.debug.NONFPU.leon3/fputest objs.debug.NONFPU.leon3/init.o \
+        objs.debug.NONFPU.leon3/task1.o objs.debug.NONFPU.leon3/task2.o \
+        objs.debug.NONFPU.leon3/common.o -msoft-float \
+        -B/opt/rtems-4.11-2016.04.01.NONFPU/sparc-rtems4.11/leon3/lib \
+        -specs bsp_specs -qrtems -mcpu=cypress -DBSP_leon3 \
+        -ffunction-sections -fdata-sections -Wall -Wmissing-prototypes \
+        -Wimplicit-function-declaration -Wstrict-prototypes \
+        -Wnested-externs -Wl,--gc-sections
+    Built with RTEMS at /opt/rtems-4.11-2016.04.01.NONFPU/sparc-rtems4.11/leon3/lib for leon3.
 
 # Support