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

Heinz Junkes junkes at fhi-berlin.mpg.de
Thu Jul 2 04:29:01 UTC 2020 

Hello, Mritunjay,

why not use the RTEMS Resource builder for 4.10 ?
Heinz


> On 1. Jul 2020, at 20:03, Mritunjay Sharma <mritunjaysharma394 at gmail.com> wrote:
> 
> Hi Gedare, 
> 
> Thank you so much, since I had the experience of RSB toolchain till now, 
> I forgot to build the RTEMS compiler toolchain.
> 
> Today's update is also this that I spent the day figuring out how
> to build it manually and got some really amazing blogs
> which have helped me (though they were a bit difficult to find because most pages have been
> relocated).
> Sharing the resources which I have used today and that are helping me build RTEMS compiler toolchain for 4.10.
> 
> http://heshamelmatary.blogspot.com/2014/06/howto-build-rtems-tool-chain-for.html
> https://docs.rtems.org/releases/4.5.0/rtemsdoc-4.5.0/share/rtemsdoc/html/started/started00040.html
> https://ftp.rtems.org/pub/rtems/releases/4.10/tools/
> 
> I am now applying patches for gdb, gcc, binutils and most
> probably hope that the build will be successful. 
> 
> As suggested by Heinz, I am improving the blog as well and will post the updated and better
> version of blog by Friday. 
> 
> Thanks,
> Mritunjay
> 
> On Wed, Jul 1, 2020 at 9:25 AM Gedare Bloom <gedare at rtems.org> wrote:
> On Tue, Jun 30, 2020 at 9:42 PM Mritunjay Sharma
> <mritunjaysharma394 at gmail.com> wrote:
> >
> > Hi Gedare,
> >
> > Thank you for the quick response, I tried using --target=i386-rtems4.10, which again
> > gave me the same error.
> >
> Did you build an RTEMS compiler toolchain for 4.10? and install it to
> a prefix in your $PATH?
> 
> > "checking for RTEMS_CPU_MODEL... i386_fp
> > checking for RTEMS_BSP_FAMILY... pc386
> > checking for CPU_CFLAGS... (cached) -mtune=i386
> > checking for CFLAGS_OPTIMIZE_V... (cached) -O2 -g
> > checking for style of include used by make... GNU
> > checking for i386-rtems4.10-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/pc-386/i386-rtems4.10/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/pc-386/i386-rtems4.10/c'
> > Makefile:275: recipe for target 'all-recursive' failed
> > make: *** [all-recursive] Error 1"
> >
> > Mritunjay
> >
> > On Wed, Jul 1, 2020 at 3:48 AM Gedare Bloom <gedare at rtems.org> wrote:
> >>
> >>  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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