[RTEMS Project] #2771: Empty C++ file does not compile with HEAD.

[RTEMS trac]

#2771: Empty C++ file does not compile with HEAD.
---------------------+------------------
 Reporter:  chrisj   |      Owner:
     Type:  defect   |     Status:  new
 Priority:  highest  |  Milestone:  4.12
Component:  cpukit   |    Version:  4.12
 Severity:  blocker  |   Keywords:
---------------------+------------------
 I have an application that does not build.

 The following C++ file:

 {{{
 $ cat t1.cpp
 #include <rtems.h>
 }}}

 does not compile with git head 5fe6d07ad5690e3d9c6445ca3a465a700a5a5015 on
 Zynq ARM. Build with:

 {{{
 $ /opt/work/rtems/4.12/bin/arm-rtems4.12-g++ \
   -B/opt/work/rtems/4.12/arm-rtems4.12/xilinx_zynq_zc706/lib \
   -B/opt/work/bsps/rtems/4.12/arm-rtems4.12/xilinx_zynq_zc706/lib \
   -specs bsp_specs -qrtems \
   -march=armv7-a -mthumb -mfpu=neon -mfloat-abi=hard -mtune=cortex-a9 \
   -g -O2 -DNDEBUG -std=c++11 \
   -Werror -Wall -Wextra \
   -o t1.o \
   -c t1.cpp
 }}}

 Some (too much to post) of the output is:

 {{{
 In file included from /opt/work/bsps/rtems/4.12/arm-
 rtems4.12/xilinx_zynq_zc706/lib/include/rtems/score/thread.h:36:0,
                  from /opt/work/bsps/rtems/4.12/arm-
 rtems4.12/xilinx_zynq_zc706/lib/include/rtems/score/heap.h:22,
                  from /opt/work/bsps/rtems/4.12/arm-
 rtems4.12/xilinx_zynq_zc706/lib/include/rtems/rtems/types.h:26,
                  from /opt/work/bsps/rtems/4.12/arm-
 rtems4.12/xilinx_zynq_zc706/lib/include/rtems.h:31,
                  from t1.cpp:1:
 /opt/work/bsps/rtems/4.12/arm-
 rtems4.12/xilinx_zynq_zc706/lib/include/rtems/score/timestamp.h: In
 function 'void _Timestamp_Set(Timestamp_Control*, time_t, long int)':
 /opt/work/bsps/rtems/4.12/arm-
 rtems4.12/xilinx_zynq_zc706/lib/include/rtems/score/timestamp.h:78:33:
 error: 'timespec2bintime' was not declared in this scope
    timespec2bintime( &_ts, _time );
                                  ^
 /opt/work/si/rtems/4.12/arm-
 rtems4.12/xilinx_zynq_zc706/lib/include/rtems/score/timestamp.h: In
 function 'void _Timestamp_Set_to_zero(Timestamp_Control*)':
 /opt/work/si/rtems/4.12/arm-
 rtems4.12/xilinx_zynq_zc706/lib/include/rtems/score/timestamp.h:94:8:
 error: invalid use of incomplete type 'Timestamp_Control {aka struct
 bintime}'
    _time->sec = 0;
         ^~
 In file included from /opt/work/rtems/4.12/arm-
 rtems4.12/include/sys/time.h:299:0,
                  from /opt/work/si/rtems/4.12/arm-
 rtems4.12/xilinx_zynq_zc706/lib/include/rtems/score/timestamp.h:43,
                  from /opt/work/si/rtems/4.12/arm-
 rtems4.12/xilinx_zynq_zc706/lib/include/rtems/score/thread.h:36,
                  from /opt/work/si/rtems/4.12/arm-
 rtems4.12/xilinx_zynq_zc706/lib/include/rtems/score/heap.h:22,
                  from /opt/work/si/rtems/4.12/arm-
 rtems4.12/xilinx_zynq_zc706/lib/include/rtems/rtems/types.h:26,
                  from /opt/work/bsps/rtems/4.12/arm-
 rtems4.12/xilinx_zynq_zc706/lib/include/rtems.h:31,
                  from t1.cpp:1:
 /opt/work/rtems/4.12/arm-rtems4.12/include/machine/_time.h:40:15: note:
 forward declaration of 'Timestamp_Control {aka struct bintime}'
  extern struct bintime _Timecounter_Boottimebin;
                ^~~~~~~
 }}}

 If '-std=c++11' is removed or replaced with '-std=gnu++11' the error
 becomes:

 {{{
 arm-rtems4.12-g++: fatal error: /opt/work/bsps/rtems/4.12/arm-
 rtems4.12/xilinx_zynq_zc706/lib/bsp_specs: attempt to rename spec
 'endfile' to already defined spec 'old_endfile'
 }}}

--
Ticket URL: <http://devel.rtems.org/ticket/2771>
RTEMS Project <http://www.rtems.org/>
RTEMS Project