Hello Alan,
I removed several internal data types from <rtems.h>. Now, it is
possible to include <rtems.h> in -std=c99 mode.
https://devel.rtems.org/ticket/3598
On 12/09/2018 20:45, Cudmore, Alan P. (GSFC-5820) wrote:
Hello,
We are building our RTEMS applications with -std=c99 and other
compiler warning switches.
On the latest RTEMS master and RTEMS 5 toolchain ( from yesterday ),
when I include the -std=c99 compiler switch, the compilation fails in
an RTEMS header.
Is it not recommended to use the “-std= “ switches when building RTEMS
applications, or is this something that we should fix? We are able to
use the “-std=c99” switches in 4.11. I noticed that the timestamp.h
file did change between 4.11 and 5.x.
Details of the error are below.
Thanks,
Alan
It is reproducible with the “hello_world_c” example as follows:
Command from unmodified examples-v2 Makefile:
sparc-rtems5-gcc --pipe
-B/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/ -specs bsp_specs
-qrtems -Wall -O2 -g -ffunction-sections -fdata-sections
-mcpu=leon3 -c -o o-optimize/test.o test.c
Command with -std=c99 added:
sparc-rtems5-gcc --pipe
-B/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/ -specs bsp_specs
-qrtems -std=c99 -Wall -O2 -g -ffunction-sections -fdata-sections
-mcpu=leon3 -c -o o-optimize/test.o test.c
In file included from
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/score/thread.h:36:0,
from
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/score/heap.h:22,
from
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/rtems/types.h:26,
from /home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems.h:31,
from test.c:5:
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/score/timestamp.h:
In function '_Timestamp_Divide':
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/score/timestamp.h:219:12:
error: incompatible types when assigning to type 'struct timespec'
from type 'int'
_ts_left = sbttots( *_lhs );
^
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/score/timestamp.h:220:13:
error: incompatible types when assigning to type 'struct timespec'
from type 'int'
_ts_right = sbttots( *_rhs );
^
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/score/timestamp.h:
In function '_Timestamp_Get_nanoseconds':
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/score/timestamp.h:261:7:
error: incompatible types when assigning to type 'struct timespec'
from type 'int'
_ts = sbttots( *_time );
^
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/score/timestamp.h:
In function '_Timestamp_Get_as_nanoseconds':
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/score/timestamp.h:281:7:
error: incompatible types when assigning to type 'struct timespec'
from type 'int'
_ts = sbttots( *_time );
^
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/score/timestamp.h:
In function '_Timestamp_To_timespec':
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/score/timestamp.h:299:14:
error: incompatible types when assigning to type 'struct timespec'
from type 'int'
*_timespec = sbttots( *_timestamp );
^
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/score/timestamp.h:
In function '_Timestamp_To_timeval':
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/score/timestamp.h:313:13:
error: incompatible types when assigning to type 'struct timeval' from
type 'int'
*_timeval = sbttotv( *_timestamp );
^
In file included from
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/score/timecounter.h:27:0,
from
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/score/timecounterimpl.h:26,
from
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/rtems/clock.h:37,
from /home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems.h:40,
from test.c:5:
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/sys/timetc.h:
At top level:
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/sys/timetc.h:72:2:
error: unknown type name 'u_int'
u_int tc_flags;
^~~~~
In file included from
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/confdefs.h:326:0,
from test.c:32:
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/imfs.h:
In function '_IMFS_get_time':
/home/alan/rtems/bsps/5/sparc-rtems5/leon3/lib/include/rtems/imfs.h:343:18:
error: storage size of 'now' isn't known
struct bintime now;
^~~
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