OpenPKG Specs: openpkg/rpmtool.pod@4a34d7a82eab (annotated)

openpkg/rpmtool.pod@4a34d7a82eab (annotated)

openpkg/rpmtool.pod

Tue, 29 Mar 2011 20:04:34 +0200

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Tue, 29 Mar 2011 20:04:34 +0200
changeset 334: 4a34d7a82eab
child 428: f880f219c566
permissions: -rw-r--r--

Rework package yet again, correcting and introducing new buildconf logic:
Conditionally disable bootstrap stage comparison correctly, correct
english grammar, better find system as(1) and ld(1), indotruce detailed
optimization option messages, more completely guess cpu types, allow
profiled bootstrapping without a preinstalled GCC because many other
compilers have long since implemented 64-bit arithmetic, instruct make
to build sequentially (not in sparallel) when building a profiled
bootstrap as GCC online documents recommend, and generally improve
comment blocks.

The single most important correction in this changeset relates to the
GCC changed optimization policy since at least GCC 4.5, in which -march
is always passed and not always correctly guessed. In the case of this
package, allowing GCC to guess the architecture leads to wild build
errors at various subcomponents (zlib, libgcc, libiberty...) and
bootstrap stages. It seems quite platform specific, and the safest
approach to correcting this seems to be explicitly always specifying the
-march argument when bootstrapping GCC. Because the best choice 'native'
is not available when bootstrapping using a foreign (non GCC) compiler,
a guess is made according to rpmmacros l_platform in that case.

It is questionable as to whether these recent optimization changes
on the part of GCC or this package are compatible with each other,
or if either are complete or correct at all. At least applying these
corrections allows this package to build again in most cases test.

 ##
 ##  rpmtool.pod -- OpenPKG RPM Auxiliary Tool (Manual Page)
 ##  Copyright (c) 2000-2007 OpenPKG Foundation e.V. <http://openpkg.net/>
 ##  Copyright (c) 2000-2007 Ralf S. Engelschall <http://engelschall.com/>
 ##
 ##  Permission to use, copy, modify, and distribute this software for
 ##  any purpose with or without fee is hereby granted, provided that
 ##  the above copyright notice and this permission notice appear in all
 ##  copies.
 ##
 ##  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 ##  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 ##  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 ##  IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
 ##  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 ##  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 ##  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 ##  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 ##  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 ##  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 ##  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 ##  SUCH DAMAGE.
 ##
 =pod
 =head1 NAME
 B<rpmtool> - RPM Auxiliary Tool
 =head1 SYNOPSIS
 B<rpmtool>
 I<command>
 [I<command-options>]
 =head1 DESCRIPTION
 This is an auxiliary tool to the RedHat Package Manager (RPM). It
 provides additional functionality for use in RPM I<spec> files while
 building packages. The following I<command>s are available:
 =over 4
 =item B<platform>
 This command outputs a unique platform id in the format
 "<architecture>-<system><release>". For instance, the output on a
 FreeBSD platform can be "i386-freebsd4.2", the output on a Linux
 platform can be "i686-linux2.2.16", the output on a Solaris platform can
 be "sun4u-sunos5.8", etc.
 Example:
  case `rpmtool platform`; in
      *-freebsd[34].* ) ... ;;
      *-sunos5.[678]  ) ... ;;
      *-linux2.[24].* ) ... ;;
  esac
 =item B<mflags> [B<-O>] I<tool>
 This command outputs additional flags for make(1) for
 use with the program I<tool>. It provides only standard flags which
 always can be used. In conjunction with B<-O> (optimization), it also provides
 reasonable job control for use on multi-processor platforms (for instance it
 outputs "-j4" on an SMP system with 2 CPUs if GNU make or BSD pmake is used).
 Example:
  make `rpmtool mflags -O make`
 =item B<cflags> [B<-O>] I<tool>
 This command outputs additional flags for cc(1) for use with the program
 I<tool>. It provides only standard flags which always can be used.
 conjunction with B<-O> it provides also optimization flags (for instance
 it outputs "-O2 -pipe" for GNU C/C++ compiler).
 Example:
  CC="$CC" CFLAGS=`rpmtool cflags -O $CC` ./configure ...
 =item B<cppflags> [B<-p> I<prefix>] [[C<+|->I<subdir> ...]
 This command output cpp(1) C<-I> options for the OpenPKG instance
 I<prefix>. It optionally can prefix or suffix with one or more I<subdir>
 related options, too. If I<subdir> is prefixed with C<+> (or not
 prefixed at all), the generated option is appended. If I<subdir> is
 prefixed with C<-> the generated option is prepended.
 Example:
  rpmtool cppflags -p /foo bar -baz +quux
 =item B<ldflags> [B<-p> I<prefix>] [[C<+|->I<subdir> ...]
 This command output ld(1) C<-L> options for the OpenPKG instance
 I<prefix>. It optionally can prefix or suffix with one or more I<subdir>
 related options, too. If I<subdir> is prefixed with C<+> (or not
 prefixed at all), the generated option is appended. If I<subdir> is
 prefixed with C<-> the generated option is prepended.
 Example:
  rpmtool ldflags -p /foo bar -baz +quux
 =item B<files> [B<-v>] [B<-o> I<outfile>] [B<-r> I<build-root>] [I<entry> ...]
 This is a dynamic variant of the RPM C<%files> section, i.e., it
 dynamically creates the contents of the C<%files> section for use with
 the C<%files -f> command. For this the file list entries are read from
 the command line (or from stdin if no arguments are given or a single
 argument C<-> is given) and written to stdout (if no B<-o> option is
 given or its I<outfile> argument is C<->) or to I<outfile>.
 The trick of this approach is to be able to use additional features in
 the file list which RPM does not provide. The following features are
 provided:
 =over 4
 =item B<Trailing Tags>
 RPM requires that all tags (like C<%attr(...)> or C<%dir>) preceed the
 path in a file list entry. This sometimes leads to ugly and unreadable
 file lists, because all paths cannot be left-aligned. With rpmtool(8)
 tags in the input file list can be at leading and trailing positions.
 The output file list will nevertheless have all tags in leading
 positions for RPM.
 =item B<Syntactical Set Pattern>
 RPM supports simple wildcard patterns like C</path/*> or C</path/[a-z]>,
 etc. Sometimes it is convenient, to also have (in addition to character
 sets) string sets like C</path/{foo,bar,quux}>. rpmtool(8) provides this
 by syntactically (without checking the filesystem) expanding those
 string sets.
 =item B<Overriding Entries>
 This is the most important feature and the reason why shtool(1)'s
 B<files> command was implemented. Although RPM allows one to specify a
 directory in a file list and then implicitly expands this recursively
 into its contents, it unfortunately does not allow one to later
 explcitly override particular entries (usually if an individual
 C<%attr(...)> tag is required). rpmtool(8) now supports overriding
 entries, i.e., if a path occurs multiple times, only the last occurance
 is kept.
 =item B<Negation Tag>
 This provides an additional tag C<%not> which can be used to explicitly
 exclude a previously implicitly added entry.
 =back
 Example:
  %install
    :
  rpmtool files -o files -r$RPM_BUILD_ROOT \
      '%defattr(-,foo,foo)' \
      '%{prefix}' \
      '%attr(1755,root,foo) %{prefix}/bin/bar' \
      '%not %dir {%{prefix},%{prefix}/*,%{prefix}/man/*}' \
      '%not %{prefix}/info/dir'
  %files -f files
 =item B<msg> [B<-b>]
 This displays the contents of F<stdin> as a boxed message. If option
 B<-b> is given it additionally beeps once before displaying the box.
 =back
 =head1 HISTORY
 This tool was created in November 2000 for use in OpenPKG, the
 cross-platform RPM-based Unix software packaging facility.
 =head1 AUTHOR
  Ralf S. Engelschall
  rse@engelschall.com
  www.engelschall.com
 =cut

OpenPKG Specs / annotate

openpkg/rpmtool.pod@4a34d7a82eab (annotated)

openpkg/rpmtool.pod