170 lines
5.3 KiB
Bash
Executable File
170 lines
5.3 KiB
Bash
Executable File
#! /bin/sh
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# Fix multilib issue for header files.
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# Copyright (C) 2015-2016 Red Hat, Inc.
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# Written by Pavel Raiskup <praiskup@redhat.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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# Replace the multilib-unclean file with multilib-clean stub, while the
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# original file is moved to unique architecture-specific location.
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@LIB@
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opt_buildroot=$(pwd)
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opt_field_separator=-
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# TODO: we could pretty easily implement other then 'cpp-header' stubs, if the
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# target file type allows some kind of "transparent" file inclusion. For
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# example shell scripts might use '. "${destdir}/${filename}_x86_64.sh'.
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# The solution is taken from Fedora PostgreSQL RPM package.
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print_stub ()
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{
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# The '#else' branch here is not needed! We never install this header on
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# systems where this set of '#ifdef's is not enough (adding suggested e.g.
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# in rhbz#1242873).
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# TODO: Shorten the #ifdef hell. There's no need to have e.g. ifdef for
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# x86_64 in ppc64's wrapper.
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replacement=$filename$opt_field_separator
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cat <<EOF
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/*
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* Kluge to support multilib installation of both 32- and 64-bit RPMS:
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* we need to arrange that header files that appear in both RPMs are
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* identical. Hence, this file is architecture-independent and calls
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* in an arch-dependent file that will appear in just one RPM.
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*
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* To avoid breaking arches not explicitly supported by Red Hat, we
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* use this indirection file *only* on known multilib arches.
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*
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* We pay attention to include _only_ the original multilib-unclean
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* header file. Including any other system-header file could cause
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* unpredictable include-ordering issues (rhbz#1412274, comment #16).
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*
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* Note: this may well fail if user tries to use gcc's -I- option.
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* But that option is deprecated anyway.
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*/
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#if defined(__x86_64__)
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#include "${replacement}x86_64.h"
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#elif defined(__i386__)
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#include "${replacement}i386.h"
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#elif defined(__ppc64__) || defined(__powerpc64__)
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#include "${replacement}ppc64.h"
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#elif defined(__ppc__) || defined(__powerpc__)
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#include "${replacement}ppc.h"
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#elif defined(__s390x__)
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#include "${replacement}s390x.h"
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#elif defined(__s390__)
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#include "${replacement}s390.h"
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#elif defined(__sparc__) && defined(__arch64__)
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#include "${replacement}sparc64.h"
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#elif defined(__sparc__)
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#include "${replacement}sparc.h"
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#endif
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EOF
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}
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print_help ()
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{
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_h_exit=false
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test -n "$1" && _h_exit=:
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cat <<EOF
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Usage: $progname [OPTIONS]
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Replace the multilib-unclean header file with multilib-clean stub, while the
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original file is moved to unique architecture-specific location. This should be
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absolutely safe operation (effects of '#include <HEADER.h>' are unchanged.
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To allow us to do incompatible changes in this script, packagers should use this
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script only through available RPM macros.
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--buildroot prefix (directory where we play with installed files, usually
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after 'make install DESTDIR=buildroot')
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--file for example /some/path/test.h
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--field-separator by default we move filename.h to filename<SEP><ARCH>.h; this
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option allows you to override the <SEP> part
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--verbose print some useful information
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--arch override arch detection (mostly for testing purposes)
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--help show this help
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EOF
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$_h_exit && exit "$1"
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}
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while test $# -gt 0
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do
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_opt=$1 ; shift
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case $_opt in
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--buildroot|--arch|--file|--field-separator)
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_raw_opt=$(echo "$_opt" | sed -e 's/^--//' -e 's/-/_/g')
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eval "opt_$_raw_opt=\$1"
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shift || die "$_opt requires argument"
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;;
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--help)
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print_help 0
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;;
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*)
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error "unexpected '$_opt' program argument"
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;;
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esac
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done
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$error_occurred && print_help 1
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fix_arch opt_arch
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for i in arch buildroot file
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do
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eval "test -z \"\$opt_$i\"" && error "--$i needs to be set"
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done
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$error_occurred && print_help 1
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# --> /buildroot/usr/include/test.h
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original_file="$opt_buildroot$opt_file"
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# --> /buildroot/usr/include
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destdir=$(dirname "$original_file")
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# --> test.h
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orig_basename=$(basename "$original_file")
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# --> test
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filename=${orig_basename%%.[a-zA-Z0-9_]}
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# --> .h
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suffix=${orig_basename##${filename}}
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# --> ../test_x86_64.h (on x86_64)
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multilib_file="$destdir/$filename$opt_field_separator$opt_arch$suffix"
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test -f "$original_file" || die "can't find '$original_file'"
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is_multilib "$opt_arch" || {
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verbose "we don't need multilib haeder hack for '$opt_arch' architecture (no-op)"
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exit 0
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}
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verbose "moving: '$original_file' to '$multilib_file'"
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mv "$original_file" "$multilib_file" || exit 1
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if print_stub > "$original_file" && chmod 644 "$original_file"; then
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:
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else
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die "can't write into '$original_file'"
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fi
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:
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