Re: unknown type name 'DBLINK'

[Heinz Junkes via Core-talk <core-talk at aps.anl.gov>]

Bull's eye

I could have thought of it myself ;-(

more ./rtems/6/powerpc-rtems6/beatnik/lib/include/link.h

...
#ifndef _LINK_H_
#define	_LINK_H_

/*
 * Pull in the correct definitions for our toolchain target.
 */
#ifdef __ELF__
#include <link_elf.h>
#else
#include <link_aout.h>
#endif

#endif /* _LINK_H_ */

Danke! Heinz


> On 12. Mar 2022, at 18:23, Michael Davidsaver <mdavidsaver at gmail.com> wrote:
> 
> On 3/12/22 09:13, Heinz Junkes via Core-talk wrote:
>> When compiling epics-base with rtems6 I get the error " unknown type name 'DBLINK' “.
>> in link.h (wird von dbAccess.h included) findet man dies:
>> struct link {
>>     struct dbCommon *precord;   /* Pointer to record owning link */
>>     short type;
>>     short flags;
>>     struct lset *lset;
>>     char *text;             /* Raw link text */
>>     union value value;
>> };
>> typedef struct link DBLINK;
>> Does anyone have an idea what is going wrong here? Can this be due to gcc-10 (powerpc-rtems6-gcc (GCC) 10.3.1) ?
> 
> I've been successfully using GCC 10.2 for some time, and GCC developers are usually strict
> about not making potentially breaking changes in a minor release.
> 
> I'd suggest approaching this by looking at the output of the preprocessor to make sure the
> typedef DBLINK from link.h is really being included.  Maybe there is another link.h ?
> 
> The straightforward, but ugly, way to do this is to copy+paste the failing gcc invocation
> and replace '-c' with '-o .../some.c -E'.  Running this from the appropriate
> O.* directory.
> 
> 
>> Heinz
>> ...
>> /home/rtems/MVME6100_WORK/rtems/6/bin/powerpc-rtems6-gcc  -fasm  -I/home/rtems/MVME6100_WORK/rtems/6/powerpc-rtems6/beatnik/lib/include -mcpu=7400       -D_GNU_SOURCE -D_DEFAULT_SOURCE         -DUSE_TYPED_RSET -DUSE_TYPED_DSET    -DUNIX      -O2 -g -fdata-sections -ffunction-sections   -Wall -Werror-implicit-function-declaration       -DRTEMS_HAS_ALTIVEC -DHAVE_MOTLOAD -DRTEMS_NETWORK_CONFIG_MBUF_SPACE=2048 -DRTEMS_NETWORK_CONFIG_CLUSTER_SPACE=5120 -mcpu=7400 -I/home/rtems/MVME6100_WORK/rtems/6/powerpc-rtems6/beatnik/lib/include    -D__LINUX_ERRNO_EXTENSIONS__    -I. -I../O.Common -I. -I. -I.. -I../as -I../bpt -I../db -I../dbStatic -I../dbtemplate -I../misc -I../registry -I../rsrv -I../../../../../include/compiler/gcc -I../../../../../include/os/RTEMS -I../../../../../include         -MM -MF asDbLib.d  ../as/asDbLib.c
>> perl -CSD /home/rtems/EPICS_TST/epics-base/bin/linux-x86_64/genVersionHeader.pl   -t ../../../../.. -N EPICS_VCS_VERSION -V "" ../O.Common/epicsVCS.h
>> Keeping VCS header ../O.Common/epicsVCS.h
>>     EPICS_VCS_VERSION = "R7.0.6.1-75-g91941af992f6c32ef4f4-dirty"
>> Expanding ../databaseVersion.h@ to ../O.Common/databaseVersion.h
>> perl -CSD /home/rtems/EPICS_TST/epics-base/bin/linux-x86_64/expandVars.pl -t ../../../../..   -DEPICS_DATABASE_MAJOR_VERSION="3"  -DEPICS_DATABASE_MINOR_VERSION="21"  -DEPICS_DATABASE_MAINTENANCE_VERSION="1"  -DEPICS_DATABASE_DEVELOPMENT_FLAG="1"  ../databaseVersion.h@ databaseVersion.h
>> Installing generated generic include file ../../../../../include/databaseVersion.h
>> /home/rtems/MVME6100_WORK/rtems/6/bin/powerpc-rtems6-gcc  -fasm  -I/home/rtems/MVME6100_WORK/rtems/6/powerpc-rtems6/beatnik/lib/include -mcpu=7400       -D_GNU_SOURCE -D_DEFAULT_SOURCE         -DUSE_TYPED_RSET -DUSE_TYPED_DSET    -DUNIX      -O2 -g -fdata-sections -ffunction-sections   -Wall -Werror-implicit-function-declaration       -DRTEMS_HAS_ALTIVEC -DHAVE_MOTLOAD -DRTEMS_NETWORK_CONFIG_MBUF_SPACE=2048 -DRTEMS_NETWORK_CONFIG_CLUSTER_SPACE=5120 -mcpu=7400 -I/home/rtems/MVME6100_WORK/rtems/6/powerpc-rtems6/beatnik/lib/include    -D__LINUX_ERRNO_EXTENSIONS__    -I. -I../O.Common -I. -I. -I.. -I../as -I../bpt -I../db -I../dbStatic -I../dbtemplate -I../misc -I../registry -I../rsrv -I../../../../../include/compiler/gcc -I../../../../../include/os/RTEMS -I../../../../../include         -c ../as/asDbLib.c
>> In file included from ../db/dbAccess.h:27,
>>                  from ../as/asDbLib.c:31:
>> ../O.Common/dbCommon.h:27:5: error: unknown type name 'DBLINK'
>>    27 |     DBLINK              tsel;       /**< @brief Time Stamp Link */
>>       |     ^~~~~~
>> ../O.Common/dbCommon.h:31:5: error: unknown type name 'DBLINK'
>>    31 |     DBLINK              sdis;       /**< @brief Scanning Disable */
>>       |     ^~~~~~
>> ../O.Common/dbCommon.h:66:5: error: unknown type name 'DBLINK'
>>    66 |     DBLINK              flnk;       /**< @brief Forward Process Link */
>>       |     ^~~~~~
>> make[5]: *** [../../../../../configure/RULES_BUILD:259: asDbLib.o] Error 1
>> make[5]: Leaving directory '/home/rtems/EPICS_TST/epics-base/modules/database/src/ioc/O.RTEMS-beatnik'
>> make[4]: *** [../../../../configure/RULES_ARCHS:58: install.RTEMS-beatnik] Error 2
>> make[4]: Leaving directory '/home/rtems/EPICS_TST/epics-base/modules/database/src/ioc'
>> make[3]: *** [../../../configure/RULES_DIRS:85: ioc.install] Error 2
>> make[3]: Leaving directory '/home/rtems/EPICS_TST/epics-base/modules/database/src'
>> make[2]: *** [../../configure/RULES_DIRS:85: src.install] Error 2
>> make[2]: Leaving directory '/home/rtems/EPICS_TST/epics-base/modules/database'
>> make[1]: *** [../configure/RULES_DIRS:85: database.install] Error 2
>> make[1]: Leaving directory '/home/rtems/EPICS_TST/epics-base/modules'
>> make: *** [configure/RULES_DIRS:85: modules.install] Error 2
>