[GSoC 2020: Daily Update]: Building EPICS with RTEMS5

Gedare Bloom gedare at rtems.org
Tue Jun 30 22:18:32 UTC 2020 

 Use --target=i386-rtems4.10 instead of  --target=i386-rtems

Does this work with 4.10.3/4.10 HEAD?

On Tue, Jun 30, 2020 at 3:54 PM Mritunjay Sharma
<mritunjaysharma394 at gmail.com> wrote:
>
> Hello everyone,
>
> I followed the documentation here https://docs.rtems.org/releases/rtemsdocs-4.10.2/share/rtems/pdf/started.pdf and
> started building RTEMS (4.10.2) for target architecture: i386 and BSP: pc386. The configure seemed to be fine
> after entering the following command:
> "../configure --target=i386-rtems --disable-posix --enable-cxx --enable-rtemsbsp=pc386 --enable-tests=samples --prefix=/home/development/rtems-4.10.2"
>
> However, the make failed with the following error: checking for i386-rtems-gcc... no
> "configure: error: no acceptable cc found in $PATH
> Makefile:712: recipe for target 'pc386' failed
> make[2]: *** [pc386] Error 1
> make[2]: Leaving directory '/home/mritunjay/development/rtems-4.10.2/pc386/i386-rtems/c'
> Makefile:257: recipe for target 'all-recursive' failed
> make[1]: *** [all-recursive] Error 1
> make[1]: Leaving directory '/home/mritunjay/development/rtems-4.10.2/pc386/i386-rtems/c'
> Makefile:275: recipe for target 'all-recursive' failed
> make: *** [all-recursive] Error 1"
>
> I checked that gcc is already installed in /usr/bin/gcc.
> So I am not able to figure out what exactly is causing the error.
> Please help to figure out what is causing this and how it can be resolved.
> I have attached the config log as well.
>
> Thanks
> Mritunjay
>
>
>
>
>
>
> On Wed, Jul 1, 2020 at 12:27 AM Mritunjay Sharma <mritunjaysharma394 at gmail.com> wrote:
>>
>>
>> I mistakenly forgot to cc my other mentors.
>>
>> This is what I responded :
>>
>>> Hello Heinz,
>>>
>>> Pardon the mistake I did in haste,
>>> as I advised by you I am now building it for RTEMS 4.10 and then I will
>>> be reporting here shortly as the build completes.
>>>
>>> Thanks
>>> Mritunjay.
>>
>>
>> I am shortly sending the email for the progress I made after working on above.
>> Thanks
>> Mritunjay
>>
>>
>>
>> On Wed, Jul 1, 2020 at 12:11 AM Heinz Junkes <junkes at fhi-berlin.mpg.de> wrote:
>>>
>>> Hello, Mritunjay,
>>>
>>> the epics-base version in github does not work with RTEMS5 It needs my extensions for this.
>>> Therefore I suggested that you first build epics7 for e.g. RTEMS 4.10.
>>> Then the easiest way is to build epics7 for RTEMS-pc386-qemu. This is fully supported.
>>> So you learn how to build EPics and then you can develop a first rsb-set for it.
>>> If this works, we will work on RTEMS5 and xilinx-Zynq.
>>> Heinz
>>>
>>> > On 30. Jun 2020, at 20:10, Mritunjay Sharma <mritunjaysharma394 at gmail.com> wrote:
>>> >
>>> >
>>> > Hello everyone,
>>> >
>>> > While yesterday, I completed the blog for the progress
>>> > till date, today I started the coding part.
>>> >
>>> > The tutorial that Heinz sent me yesterday guided
>>> > me to make the following changes:
>>> >
>>> > 1) epics-base/configure/CONFIG_SITE:
>>> > # Which target architectures to cross-compile for.
>>> > #  Definitions in configure/os/CONFIG_SITE.<host>.Common
>>> > #  may override this setting.
>>> > -CROSS_COMPILER_TARGET_ARCHS=
>>> > - #CROSS_COMPILER_TARGET_ARCHS=vxWorks-ppc32
>>> > + CROSS_COMPILER_TARGET_ARCHS=pc386
>>> > +#CROSS_COMPILER_TARGET_ARCHS=RTEMS-xilinx_zynq_a9_qemu
>>> >
>>> > I did not use xilinx_zynq_a9_qemu for now because I could
>>> > not locate CONFIG.Common.RTEMS-xilinx_zynq_a9_qemu
>>> > as of now in epics-base/configure/os.
>>> >
>>> > 2) configure/os/CONFIG_SITE.Common.RTEMS :
>>> >
>>> > # Where to find RTEMS
>>> > #
>>> > # APS:
>>> > -RTEMS_VERSION = 4.10.2
>>> > -RTEMS_BASE = /usr/local/vw/rtems/rtems-$(RTEMS_VERSION)
>>> > #RTEMS_VERSION = 4.10.2
>>> > #RTEMS_BASE = /usr/local/vw/rtems/rtems-$(RTEMS_VERSION)
>>> >
>>> > +# FHI:
>>> > +RTEMS_SERIES = 5
>>> > +RTEMS_VERSION = 5
>>> > +RTEMS_BASE = /home/mritunjay/development/rtems/5
>>> >
>>> > I thought to straightaway move with building it with RTEMS 5
>>> > because I have done it earlier for beatnik.
>>> >
>>> > After this as an experiment, I tried the make command which,
>>> > as expected, generated the following error:
>>> >
>>> > "make[4]: *** No rule to make target '../O.Common/osiFileName.h', needed by 'inc'.  Stop.
>>> > make[4]: Leaving directory '/home/mritunjay/development/EPICS/epics-base/modules/libcom/src/O.pc386'
>>> > ../../../configure/RULES_ARCHS:58: recipe for target 'install.pc386' failed
>>> > make[3]: *** [install.pc386] Error 2
>>> > make[3]: Leaving directory '/home/mritunjay/development/EPICS/epics-base/modules/libcom/src'
>>> > ../../configure/RULES_DIRS:85: recipe for target 'src.install' failed
>>> > make[2]: *** [src.install] Error 2
>>> > make[2]: Leaving directory '/home/mritunjay/development/EPICS/epics-base/modules/libcom'
>>> > ../configure/RULES_DIRS:85: recipe for target 'libcom.install' failed
>>> > make[1]: *** [libcom.install] Error 2
>>> > make[1]: Leaving directory '/home/mritunjay/development/EPICS/epics-base/modules'
>>> > configure/RULES_DIRS:85: recipe for target 'modules.install' failed
>>> > make: *** [modules.install] Error 2
>>> > "
>>> > I then re-visited to what I did with beatnik and made the following changes to
>>> > start with adding support for RTEMS 5:
>>> >
>>> > diff --git a/configure/CONFIG_COMMON b/configure/CONFIG_COMMON
>>> > index 6c0e11e0d..d56802968 100644
>>> > --- a/configure/CONFIG_COMMON
>>> > +++ b/configure/CONFIG_COMMON
>>> > @@ -142,9 +142,10 @@ BUILDLIB_SUFFIX = $(BUILDLIB_SUFFIX_$(SHARED_LIBRARIES))
>>> >  #--------------------------------------------------
>>> >  # vpath directories
>>> >  POSIX_YES = os/posix
>>> > +OS_IMPL_DIRS = $(if $(OS_API),os/$(OS_CLASS)-$(OS_API),) os/$(OS_CLASS)
>>> >  GENERIC_SRC_DIRS = .. $(SRC_DIRS)
>>> >  OS_SRC_DIRS += . $(foreach dir, .. $(SRC_DIRS), \
>>> > -       $(addprefix $(dir)/, os/$(OS_CLASS) $(POSIX_$(POSIX)) os/default ))
>>> > +       $(addprefix $(dir)/, $(OS_IMPL_DIRS) $(POSIX_$(POSIX)) os/default ))
>>> >  CMPLR_SRC_DIRS += . $(foreach dir, .. $(SRC_DIRS), \
>>> >         $(addprefix $(dir)/, compiler/$(CMPLR_CLASS) compiler/default ))
>>> >  ALL_SRC_DIRS = $(CMPLR_SRC_DIRS) $(OS_SRC_DIRS) $(GENERIC_SRC_DIRS)
>>> > diff --git a/configure/CONFIG_SITE b/configure/CONFIG_SITE
>>> > index 09b4c1525..f3aa4b3f7 100644
>>> > --- a/configure/CONFIG_SITE
>>> > +++ b/configure/CONFIG_SITE
>>> > @@ -161,7 +161,7 @@ USE_POSIX_THREAD_PRIORITY_SCHEDULING = YES
>>> >
>>> >  # Site version number, if set will append '-' and this string to the
>>> >  #  EPICS version number string that is reported by many tools.
>>> > -EPICS_SITE_VERSION =
>>> > +EPICS_SITE_VERSION =
>>> >
>>> >  # For GNU compiler, use pipes rather than temporary files for
>>> >  #  communication between the various stages of compilation.
>>> > diff --git a/configure/os/CONFIG.Common.RTEMS b/configure/os/CONFIG.Common.RTEMS
>>> > index 8425e6ef9..929510d61 100644
>>> > --- a/configure/os/CONFIG.Common.RTEMS
>>> > +++ b/configure/os/CONFIG.Common.RTEMS
>>> > @@ -94,16 +94,28 @@ MODEXT=.obj
>>> >  # operating system class (include/os/<os_class>)
>>> >  OS_CLASS = RTEMS
>>> >
>>> > +#--------------------------------------------------
>>> > +# operating system API (src/os/<os_class>-<os-api>)
>>> > +OS_API_4.7 = kernel
>>> > +OS_API_4.8 = kernel
>>> > +OS_API_4.9 = kernel
>>> > +OS_API_4.10 = kernel
>>> > +OS_API = $(firstword $(OS_API_$(RTEMS_SERIES)) posix)
>>> > +
>>> >  #--------------------------------------------------
>>> >  # Operating system flags
>>> > -OP_SYS_LDLIBS += -lrtemsCom -lc -lrtemscpu -lCom -lnfs -lm
>>> > -OP_SYS_LDFLAGS += $(CPU_CFLAGS) -u Init \
>>> > +OP_SYS_LDLIBS += -lrtemsCom -lc -lrtemscpu -lCom -lnfs -lm
>>> > +# newest Rtems > 2019 needs this -ltftpfs
>>> > +
>>> > +OP_SYS_LDFLAGS_posix += -u POSIX_Init
>>> > +OP_SYS_LDFLAGS_kernel += $(CPU_CFLAGS) -u Init \
>>> >                   $(PROJECT_RELEASE)/lib/no-dpmem.rel \
>>> >                   $(PROJECT_RELEASE)/lib/no-mp.rel \
>>> >                   $(PROJECT_RELEASE)/lib/no-part.rel \
>>> >                   $(PROJECT_RELEASE)/lib/no-signal.rel \
>>> >                   $(PROJECT_RELEASE)/lib/no-rtmon.rel
>>> >
>>> > +OP_SYS_LDFLAGS += $(CPU_FLAGS) $(OP_SYS_LDFLAGS_$(OS_API))
>>> >  MOD_SYS_LDFLAGS += $(CPU_CFLAGS) -Wl,-r -nostdlib
>>> >
>>> >  # Do not link against libraries which are part of the Generic Image
>>> > diff --git a/modules/libcom/RTEMS/Makefile b/modules/libcom/RTEMS/Makefile
>>> > index b46889db1..cb1a63b97 100644
>>> > --- a/modules/libcom/RTEMS/Makefile
>>> > +++ b/modules/libcom/RTEMS/Makefile
>>> > @@ -11,6 +11,9 @@ TOP = ../../..
>>> >  include $(TOP)/configure/CONFIG
>>> >  include $(TOP)/configure/CONFIG_LIBCOM_VERSION
>>> >
>>> > +#for checking
>>> > +SRC_DIRS += ../$(OS_API)
>>> > +
>>> >  PERL_SCRIPTS += epicsMakeMemFs.pl
>>> >
>>> >  INC += epicsRtemsInitHooks.h
>>> > (END)
>>> >
>>> > I will start with further changes tomorrow. Please find the changes pushed
>>> > here: https://github.com/epics-base/epics-base/compare/7.0...mritunjaysharma394:GSoC_pc-386
>>> >
>>> > I will be pleased to have the feedback and if I am on the correct course now.
>>> >
>>> > I will also like to inform that I have filled the GSoC Phase 1 Evaluation form and I
>>> > will request all my mentors to please feel free to fill the form before the deadline
>>> > and I hope that from now I will not disappoint with my progress.
>>> >
>>> > It is my bad that I still have not  been able to reach out to one more
>>> > mentor Pavel Pisa. Please if possible share the email id of Pavel and cc
>>> > Pavel in the replies to the email so that Pavel s aware of the progress and I
>>> > can apologise for my inability to connect with Pavel earlier.
>>> >
>>> > Thanks,
>>> > Mritunjay.
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>>

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