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RPM support for BSPs
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====================
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Introduction
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------------
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Building an rpm requires to have a tar archive of the sources, and a
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rpm-spec files specifying the details of building.
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To support per bsp rpms, one rpm-spec is used per BSP.
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Instead of writing one rpm-spec for each BSP, I have written a shell script
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(mkspec) which generates one *.spec (rtems--.spec) per BSP
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bsp from an rpm-spec template (rtems.spec.in).
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A second shell script (mkrpms) is a convienience script which invokes a
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sequence of building rpms for several bsps.
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mkbinutilspec
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-------------
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mkbinutilspec takes two arguments:
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$1 ... the target_alias for binutils RPMs of this toolset
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Invoking mkbinutilspec will generate a -binutils.spec either in
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/usr/src/packages/SPECS (SuSE convention) or
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/usr/src/redhat/SPECS (Redhat convention) or
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/usr/src/SPECS
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Eg. ./mkbinutilspec sparc-rtems generates
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On SuSE-6.2: /usr/src/packages/SPECS/sparc-rtems-binutils.spec
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On RedHat 6.0: /usr/src/redhat/SPECS/sparc-rtems-binutils.spec
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mkgccnewlibspec
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---------------
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mkgccnewlibspec takes two arguments:
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$1 ... the target_alias for the gcc/newlib RPMs of this toolset
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Invoking mkgccnewlibspec will generate a -gccnewlibs.spec
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either in:
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/usr/src/packages/SPECS (SuSE convention) or
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/usr/src/redhat/SPECS (Redhat convention) or
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/usr/src/SPECS
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Eg. ./mkgccnewlibspec sparc-rtems generates
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On SuSE-6.2: /usr/src/packages/SPECS/sparc-rtems-gcc_newlib.spec
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On RedHat 6.0: /usr/src/redhat/SPECS/sparc-rtems-gcc_newlib.spec
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mkgdbspec
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---------
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mkgdbspec takes two arguments:
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$1 ... the target_alias for the gdb RPMs of this toolset
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Invoking mkgdbspec will generate a -gdb.spec
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either in:
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/usr/src/packages/SPECS (SuSE convention) or
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/usr/src/redhat/SPECS (Redhat convention) or
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/usr/src/SPECS
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Eg. ./mkgdbspec sparc-rtems generates
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On SuSE-6.2: /usr/src/packages/SPECS/sparc-rtems-gcc_newlib.spec
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On RedHat 6.0: /usr/src/redhat/SPECS/sparc-rtems-gcc_newlib.spec
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# XXX BSPs not tested yet by Joel
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#
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# mkbspspec
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# ---------
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#
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# mkbspspec takes two arguments:
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# $1 ... the target_alias this bsp belongs to
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# $2 ... the bsp to be built
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#
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# Invoking mkbspspec will generate a rtems--.spec either in
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# /usr/src/packages/SPECS (SuSE convention) or
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# /usr/src/redhat/SPECS (Redhat convention) or
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# /usr/src/SPECS
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#
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# Eg. ./mkspec gensh1 sh-rtemself generates
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# /usr/src/packages/SPECS/rtems-sh-rtemself-gensh1.spec on SuSE-6.2.
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mkspec
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---------
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mkspec takes two arguments:
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$1 ... the target_alias for the RPMs composing this toolset
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$2 ... the bsp to be built
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Invoking mkspec will generate a set of spec files either in:
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/usr/src/packages/SPECS (SuSE convention) or
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/usr/src/redhat/SPECS (Redhat convention) or
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/usr/src/SPECS
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Eg. ./mkspec sparc-rtems erc32 generates
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On SuSE-6.2: /usr/src/packages/SPECS/sparc-rtems-binutils.spec
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/usr/src/packages/SPECS/sparc-rtems-gcc_newlib.spec
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/usr/src/packages/SPECS/sparc-rtems-gdb.spec
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On RedHat 6.0: /usr/src/packages/SPECS/sparc-rtems-binutils.spec
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/usr/src/packages/SPECS/sparc-rtems-gcc_newlib.spec
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/usr/src/packages/SPECS/sparc-rtems-gdb.spec
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Building binutils-rpms
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----------------------
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0. Login as root.
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1. Install a tarball of the various tool sources (with the
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version number attached!) to /usr/src/[packages|redhat]/SOURCES
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cd /usr/src/[packages|redhat]/SOURCES
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cp .../binutils- .
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cp .../binutils--rtems-.diff .
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2. Generate and install the required rpm-spec file[s]
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cd rtems-/scripts/
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mkbinutilspec
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where target_alias is of the form sparc-rtems or sh-rtems-elf.
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3. Build the rpms
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Building a binary rpm:
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rpm -bb /usr/src/[packages|redhat]/SPECS/rtems--binutils.spec
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Building a source and binary rpm
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rpm -ba /usr/src/[packages|redhat]/SPECS/rtems--binutils.spec
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XXX Note: a BSP's src.rpm contains its spec-file and the tar-archive of the
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sources (approx. 4-5MB per BSP).
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Building TOOL-rpms
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------------------
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0. Login as root.
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1. Install a tarball of the various tool sources (with the
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version number attached!) to /usr/src/[packages|redhat]/SOURCES
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cd /usr/src/[packages|redhat]/SOURCES
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cp .../binutils- .
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cp .../gcc- .
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cp .../newlib- .
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2. Generate and install the required rpm-spec file[s]
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cd rtems-/scripts/
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mktoolspec
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3. Build the rpms
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Building a binary rpm:
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rpm -bb /usr/src/[packages|redhat]/SPECS/rtems-.spec
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Building a source and binary rpm
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rpm -ba /usr/src/[packages|redhat]/SPECS/rtems-.spec
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XXX Note: a BSP's src.rpm contains its spec-file and the tar-archive of the
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sources (approx. 4-5MB per BSP).
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Building BSP-rpms
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-----------------
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0. Login as root.
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1. Install a tarball of RTEMS's sources (with version number attached!) to
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/usr/src/[packages|redhat]/SOURCES
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Eg.
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tar czvf /usr/src/packages/SOURCES/rtems-.tar.gz rtems-
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2. Generate and install the required rpm-spec file[s]
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cd rtems-/scripts/
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mkspec
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3. Build the rpms
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Building a binary rpm:
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rpm -bb /usr/src/[packages|redhat]/SPECS/rtems--.spec
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Building a source and binary rpm
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rpm -ba /usr/src/[packages|redhat]/SPECS/rtems--.spec
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Note: a BSP's src.rpm contains its spec-file and the tar-archive of the
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sources (approx. 4-5MB per BSP).
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Known Bugs/Deficiencies
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-----------------------
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* All files mentioned in here are in its early infancy ;-)
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* Building for a single bsp requires an own copy of the source tree inside
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rpm's build directory.
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* Building inside the RTEMS source tree doesn't work.
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* Dependencies on toolchain-rpms not yet supported in rtems.spec.in.
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* Installing multiple binary bsp rpms for the same target can cause
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warnings from rpm, because these bsp-rpms share files.
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* rtems.spec.in is prepared for rpm relocation support, but RTEMS is not
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relocatible (yet?)
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* rtems.spec.in deserves to be extended (description, authors etc)
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* The final packaging stage to build a binary rpm takes an awful lot of
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time - deserves to be investigated.
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* Some RTEMS's cross executables (eg. hello.exe for sparc-rtems/erc32) cause
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warnings from rpm and/or objdump. AFAIS, this is a bug in rpm.
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* Probably many more ...
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* Last but not least: RTEMS should be split.
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Remarks
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-------
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* It would make sense to split RTEMS host/cross-tools and files depending on
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the target only (/make/*.cfg -- Whow, RTEMS really has files
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which depend on the target only :) into separate rpms.
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* Instead of using a single rpm-spec for each bsp, RTEMS could also use a
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single rpm-spec for all (or at least a given subset of all) bsps of a target.
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* rpm -b[b|a] leaves its built trees unpacked in
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/usr/src/[packages|redhat]/BUILD. Therefore you will rather soon run out of disc
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space if not removing them. (Use rpm --clean -b[a|b] for cleaning them up
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automatically after building)
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* The size of binary rpms can differ up to one magnitude depending on the
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target/bsp (eg. sh-rtems/gensh1 ~10MB vs. sh-rtemself/gensh1 ~32MB)
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Ralf Corsepius, 1999/10/14
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