#!/bin/sh
# Generates multilib.h.
-# Copyright (C) 1994, 1995 Free Software Foundation, Inc.
+# Copyright (C) 1994-2016 Free Software Foundation, Inc.
-#This file is part of GNU CC.
+#This file is part of GCC.
-#GNU CC is free software; you can redistribute it and/or modify
-#it under the terms of the GNU General Public License as published by
-#the Free Software Foundation; either version 2, or (at your option)
-#any later version.
+#GCC is free software; you can redistribute it and/or modify it under
+#the terms of the GNU General Public License as published by the Free
+#Software Foundation; either version 3, or (at your option) any later
+#version.
-#GNU CC is distributed in the hope that it will be useful,
-#but WITHOUT ANY WARRANTY; without even the implied warranty of
-#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-#GNU General Public License for more details.
+#GCC is distributed in the hope that it will be useful, but WITHOUT
+#ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+#FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+#for more details.
#You should have received a copy of the GNU General Public License
-#along with GNU CC; see the file COPYING. If not, write to
-#the Free Software Foundation, 59 Temple Place - Suite 330,
-#Boston, MA 02111-1307, USA.
+#along with GCC; see the file COPYING3. If not see
+#<http://www.gnu.org/licenses/>.
# This shell script produces a header file which the gcc driver
# program uses to pick which library to use based on the machine
# The first argument is a list of sets of options. The elements in
# the list are separated by spaces. Within an element, the options
-# are separated by slashes. No leading dash is used on the options.
-# Each option in a set is mutually incompatible with all other options
+# are separated by slashes or pipes. No leading dash is used on the
+# options.
+# Each option in a set separated by slashes is mutually incompatible
+# with all other options
# in the set.
+# Each option in a set separated by pipes will be used for the library
+# compilation and any of the options in the set will be sufficient
+# for it to be triggered.
# The optional second argument is a list of subdirectory names. If
# the second argument is non-empty, there must be as many elements in
# The optional fourth argument is a list of multilib directory
# combinations that should not be built.
+# The optional fifth argument is a list of options that should be
+# used whenever building multilib libraries.
+
+# The optional sixth argument is a list of exclusions used internally by
+# the compiler similar to exceptions. The difference being that exclusions
+# allow matching default options that genmultilib does not know about and
+# is done at runtime as opposed to being sorted out at compile time.
+# Each element in the list is a separate exclusion rule. Each rule is
+# a list of options (sans preceding '-') separated by a '/'. The options
+# on the rule are grouped as an AND operation, and all options much match
+# for the rule to exclude a set. Options can be preceded with a '!' to
+# match a logical NOT.
+
+# The optional seventh argument is a list of OS subdirectory names.
+# The format is either the same as of the second argument, or a set of
+# mappings. When it is the same as the second argument, it describes
+# the multilib directories using OS conventions, rather than GCC
+# conventions. When it is a set of mappings of the form gccdir=osdir,
+# the left side gives the GCC convention and the right gives the
+# equivalent OS defined location. If the osdir part begins with a !,
+# the os directory names are used exclusively. Use the mapping when
+# there is no one-to-one equivalence between GCC levels and the OS.
+
+# The optional eighth argument which intends to reduce the effort to write
+# so many MULTILIB_EXCEPTIONS rules. This option defines a series of option
+# combinations that we actually required.
+# For some cases, the generated option combinations are far more than what
+# we need, we have to write a lot of rules to screen out combinations we
+# don't need. If we missed some rules, the unexpected libraries will be built.
+# Now with this argument, one can simply give what combinations are needed.
+# It is pretty straigtforward.
+# This argument can be used together with MULTILIB_EXCEPTIONS and will take
+# effect after the MULTILIB_EXCEPTIONS.
+
+# The optional ninth argument is the multiarch name.
+
+# The optional tenth argument specifies how to reuse multilib for different
+# option sets.
+
+# The last option should be "yes" if multilibs are enabled. If it is not
+# "yes", all GCC multilib dir names will be ".".
+
# The output looks like
# #define MULTILIB_MATCHES "\
# SUBDIRECTORY OPTIONS;\
# The order of the subdirectories is such that they can be created in
# order; that is, a subdirectory is preceded by all its parents.
-# Here is a example (this is simplified from the actual 680x0 case):
-# genmultilib "m68000/m68020 msoft-float" "m68000 m68020 msoft-float"
-# "m68000=mc68000"
+# Here is an example (this is from the actual sparc64 case):
+# genmultilib 'm64/m32 mno-app-regs|mcmodel=medany' '64 32 alt'
+# 'mcmodel?medany=mcmodel?medmid' 'm32/mno-app-regs* m32/mcmodel=*'
+# '' 'm32/!m64/mno-app-regs m32/!m64/mcmodel=medany'
+# '../lib64 ../lib32 alt' '' '' '' yes
# This produces:
-# ". !m68000 !mc68000 !m68020 !msoft-float;",
-# "m68000 m68000 !m68020 !msoft-float;",
-# "m68000 mc60000 !m68020 !msoft-float;",
-# "m68020 !m68000 !mc68000 m68020 !msoft-float;",
-# "msoft-float !m68000 !mc68000 !m68020 msoft-float;",
-# "m68000/msoft-float m68000 !m68020 msoft-float;",
-# "m68000/msoft-float mc68000 !m68020 msoft-float;",
-# "m68020/msoft-float !m68000 !mc68000 m68020 msoft-float;",
+# ". !m64 !m32 !mno-app-regs !mcmodel=medany;",
+# "64:../lib64 m64 !m32 !mno-app-regs !mcmodel=medany;",
+# "32:../lib32 !m64 m32 !mno-app-regs !mcmodel=medany;",
+# "alt !m64 !m32 mno-app-regs mcmodel=medany;",
+# "alt !m64 !m32 mno-app-regs !mcmodel=medany;",
+# "alt !m64 !m32 !mno-app-regs mcmodel=medany;",
+# "64/alt:../lib64/alt m64 !m32 mno-app-regs mcmodel=medany;",
+# "64/alt:../lib64/alt m64 !m32 mno-app-regs !mcmodel=medany;",
+# "64/alt:../lib64/alt m64 !m32 !mno-app-regs mcmodel=medany;",
#
-# The effect is that `gcc -msoft-float' (for example) will append
-# msoft-float to the directory name when searching for libraries or
-# startup files, and `gcc -m68000 -msoft-float' (for example) will
-# append m68000/msoft-float.
+# The effect is that `gcc -mno-app-regs' (for example) will append "alt"
+# to the directory name when searching for libraries or startup files and
+# `gcc -m32 -mcmodel=medany' (for example) will append "32/alt". Also note
+# that exclusion above is moot, unless the compiler had a default of -m32,
+# which would mean that all of the "alt" directories (not the 64/alt ones)
+# would be ignored (not generated, nor used) since the exclusion also
+# matches the multilib_default args.
# Copy the positional parameters into variables.
options=$1
dirnames=$2
matches=$3
exceptions=$4
+extra=$5
+exclusions=$6
+osdirnames=$7
+multilib_required=$8
+multiarch=$9
+multilib_reuse=${10}
+enable_multilib=${11}
+
+echo "static const char *const multilib_raw[] = {"
+
+mkdir tmpmultilib.$$ || exit 1
+# Use cd ./foo to avoid CDPATH output.
+cd ./tmpmultilib.$$ || exit 1
# What we want to do is select all combinations of the sets in
# options. Each combination which includes a set of mutually
if [ "$#" != "0" ]; then
first=$1
shift
- for opt in `echo $first | sed -e 's|/| |'g`; do
- echo ${initial}${opt}/
- done
- ./tmpmultilib $@
- for opt in `echo $first | sed -e 's|/| |'g`; do
- initial="${initial}${opt}/" ./tmpmultilib $@
- done
+ case "$first" in
+ *\|*)
+ all=${initial}`echo $first | sed -e 's_|_/_'g`
+ first=`echo $first | sed -e 's_|_ _'g`
+ echo ${all}/
+ initial="${initial}${all}/" ./tmpmultilib $@
+ ./tmpmultilib $first $@ | grep -v "^${all}"
+ ;;
+ *)
+ for opt in `echo $first | sed -e 's|/| |'g`; do
+ echo ${initial}${opt}/
+ done
+ ./tmpmultilib $@
+ for opt in `echo $first | sed -e 's|/| |'g`; do
+ initial="${initial}${opt}/" ./tmpmultilib $@
+ done
+ esac
fi
EOF
chmod +x tmpmultilib
combinations=`initial=/ ./tmpmultilib ${options}`
-rm -f tmpmultilib
-
# If there exceptions, weed them out now
if [ -n "${exceptions}" ]; then
- rm -f tmpmultilib2
cat >tmpmultilib2 <<\EOF
#!/bin/sh
# This recursive script weeds out any combination of multilib
EOF
chmod +x tmpmultilib2
combinations=`./tmpmultilib2 ${combinations}`
- rm -f ./tmpmultilib2
+fi
+
+# If the MULTILIB_REQUIRED list are provided,
+# filter out combinations not in this list.
+if [ -n "${multilib_required}" ]; then
+ cat >tmpmultilib2 <<\EOF
+#!/bin/sh
+# This recursive script weeds out any combination of multilib
+# switches that not in the expected list.
+
+ for opt in $@; do
+ case "$opt" in
+EOF
+
+ for expect in ${multilib_required}; do
+ echo " /${expect}/) echo \${opt};;" >> tmpmultilib2
+ done
+
+cat >>tmpmultilib2 <<\EOF
+ *) ;;
+ esac
+ done
+EOF
+
+ chmod +x tmpmultilib2
+ combinations=`./tmpmultilib2 ${combinations}`
+
fi
# Construct a sed pattern which will convert option names to directory
set x ${dirnames}
shift
for set in ${options}; do
- for opt in `echo ${set} | sed -e 's|/| |'g`; do
- if [ "$1" != "${opt}" ]; then
- todirnames="${todirnames} -e s|/${opt}/|/${1}/|g"
- fi
+ for opts in `echo ${set} | sed -e 's|/| |'g`; do
+ patt="/"
+ for opt in `echo ${opts} | sed -e 's_|_ _'g`; do
+ if [ "$1" != "${opt}" ]; then
+ todirnames="${todirnames} -e s|/${opt}/|/${1}/|g"
+ patt="${patt}${1}/"
+ if [ "${patt}" != "/${1}/" ]; then
+ todirnames="${todirnames} -e s|${patt}|/${1}/|g"
+ fi
+ fi
+ done
shift
done
done
fi
-# Construct a sed pattern which will add negations based on the
-# matches. The semicolons are easier than getting the shell to accept
-# quoted spaces when expanding a variable.
-matchnegations=
-for i in ${matches}; do
- l=`echo $i | sed -e 's/=.*$//' -e 's/?/=/g'`
- r=`echo $i | sed -e 's/^.*=//' -e 's/?/=/g'`
- matchnegations="${matchnegations} -e s/;!${l};/;!${l};!${r};/"
-done
+# Construct a sed pattern which will convert option names to OS directory
+# names.
+toosdirnames=
+defaultosdirname=
+defaultosdirname2=
+if [ -n "${multiarch}" ]; then
+ defaultosdirname=::${multiarch}
+fi
+if [ -n "${osdirnames}" ]; then
+ set x ${osdirnames}
+ shift
+ while [ $# != 0 ] ; do
+ case "$1" in
+ .=*)
+ defaultosdirname=`echo $1 | sed 's|^.=|:|'`
+ if [ -n "${multiarch}" ]; then
+ defaultosdirname=${defaultosdirname}:${multiarch}
+ fi
+ case "$defaultosdirname" in
+ ::*) ;;
+ *)
+ defaultosdirname2=${defaultosdirname}
+ defaultosdirname=
+ ;;
+ esac
+ shift
+ ;;
+ *=*)
+ patt=`echo $1 | sed -e 's|=|/$=/|'`
+ toosdirnames="${toosdirnames} -e s=^/${patt}/="
+ shift
+ ;;
+ *)
+ break
+ ;;
+ esac
+ done
+
+ if [ $# != 0 ]; then
+ for set in ${options}; do
+ for opts in `echo ${set} | sed -e 's|/| |'g`; do
+ patt="/"
+ for opt in `echo ${opts} | sed -e 's_|_ _'g`; do
+ if [ "$1" != "${opt}" ]; then
+ toosdirnames="${toosdirnames} -e s|/${opt}/|/${1}/|g"
+ patt="${patt}${1}/"
+ if [ "${patt}" != "/${1}/" ]; then
+ toosdirnames="${toosdirnames} -e s|${patt}|/${1}/|g"
+ fi
+ fi
+ done
+ shift
+ done
+ done
+ fi
+fi
# We need another recursive shell script to correctly handle positive
# matches. If we are invoked as
# Start with the current directory, which includes only negations.
optout=
for set in ${options}; do
- for opt in `echo ${set} | sed -e 's|/| |'g`; do
+ for opt in `echo ${set} | sed -e 's_[/|]_ _g'`; do
optout="${optout} !${opt}"
done
done
optout=`echo ${optout} | sed -e 's/^ //'`
-if [ -n "${matchnegations}" ]; then
- optout=`echo ";${optout};" | sed -e 's/ /;/g' ${matchnegations} -e 's/^;//' -e 's/;$//' -e 's/;/ /g'`
+echo "\".${defaultosdirname} ${optout};\","
+[ -n "${defaultosdirname2}" ] && echo "\".${defaultosdirname2} ${optout};\","
+
+# This part of code convert an option combination to
+# its corresponding directory names.
+# The directory names will be deduced from MULTILIB_DIRNAMES,
+# MULTILIB_OSDIRNAMES or the option combination itself.
+rm -rf tmpmultilib3
+cat >tmpmultilib3 <<\EOF
+#!/bin/sh
+
+dirout=
+combo=$1
+todirnames=$2
+toosdirnames=$3
+enable_multilib=$4
+
+if [ -n "${todirnames}" ]; then
+ dirout=`echo ${combo} | sed ${todirnames}`
+else
+ dirout=`echo ${combo} | sed -e 's/=/-/g'`
fi
-echo "\". ${optout};\","
+# Remove the leading and trailing slashes.
+dirout=`echo ${dirout} | sed -e 's|^/||' -e 's|/*:/*|:|' -e 's|/$||g'`
+
+# Use the OS directory names rather than the option names.
+if [ -n "${toosdirnames}" ]; then
+ osdirout=`echo ${combo} | sed ${toosdirnames}`
+ # Remove the leading and trailing slashes.
+ osdirout=`echo ${osdirout} | sed -e 's|^/||' -e 's|/*:/*|:|' -e 's|/$||g'`
+ if [ "x${enable_multilib}" != xyes ]; then
+ dirout=".:${osdirout}"
+ disable_multilib=yes
+ else
+ case "${osdirout}" in
+ !*)
+ dirout=`echo ${osdirout} | sed 's/^!//'`
+ ;;
+ *)
+ dirout="${dirout}:${osdirout}"
+ ;;
+ esac
+ fi
+else
+ if [ "x${enable_multilib}" != xyes ]; then
+ # genmultilib with --disable-multilib should be
+ # called with '' '' '' '' '' '' '' no
+ # if MULTILIB_OSDIRNAMES is empty.
+ exit 1
+ fi
+fi
+echo "${dirout}"
+EOF
+chmod +x tmpmultilib3
+
+# Script to look through the options and output each option that is present,
+# and negate each option that is not present.
+rm -rf tmpmultilib4
+cat > tmpmultilib4 <<\EOF
+#!/bin/sh
+
+optout=
+combo=$1
+options=$2
+
+for set in ${options}; do
+ setopts=`echo ${set} | sed -e 's_[/|]_ _g'`
+ for opt in ${setopts}; do
+ if expr "${combo} " : ".*/${opt}/.*" > /dev/null; then
+ optout="${optout} ${opt}"
+ else
+ optout="${optout} !${opt}"
+ fi
+ done
+done
+optout=`echo ${optout} | sed -e 's/^ //'`
+echo "${optout}"
+EOF
+chmod +x tmpmultilib4
# Work over the list of combinations. We have to translate each one
# to use the directory names rather than the option names, we have to
# correct list of options and negations.
for combo in ${combinations}; do
# Use the directory names rather than the option names.
- if [ -n "${todirnames}" ]; then
- dirout=`echo ${combo} | sed ${todirnames}`
- else
- dirout=${combo}
- fi
- # Remove the leading and trailing slashes.
- dirout=`echo ${dirout} | sed -e 's|^/||' -e 's|/$||g'`
+ dirout=`./tmpmultilib3 "${combo}" "${todirnames}" "${toosdirnames}" "${enable_multilib}"`
# Look through the options. We must output each option that is
# present, and negate each option that is not present.
- optout=
- for set in ${options}; do
- setopts=`echo ${set} | sed -e 's|/| |g'`
- for opt in ${setopts}; do
- if expr "${combo} " : ".*/${opt}/.*" > /dev/null; then
- optout="${optout} ${opt}"
- else
- optout="${optout} !${opt}"
- fi
- done
- done
- optout=`echo ${optout} | sed -e 's/^ //'`
-
- # Add any negations of matches.
- if [ -n "${matchnegations}" ]; then
- optout=`echo ";${optout};" | sed -e 's/ /;/g' ${matchnegations} -e 's/^;//' -e 's/;$//' -e 's/;/ /g'`
- fi
+ optout=`./tmpmultilib4 "${combo}" "${options}"`
# Output the line with all appropriate matches.
- dirout="${dirout}" optout="${optout}" ./tmpmultilib2 ${matches}
+ dirout="${dirout}" optout="${optout}" ./tmpmultilib2
done
# Terminate the list of string.
echo "NULL"
+echo "};"
-rm -f tmpmultilib2
+# Output rules used for multilib reuse.
+echo ""
+echo "static const char *const multilib_reuse_raw[] = {"
+for rrule in ${multilib_reuse}; do
+ # The left part of the rule are the options we used to build multilib.
+ # The right part of the rule are the options that can reuse this multilib.
+ combo=`echo ${rrule} | sed -e 's/=.*$//' -e 's/\./=/g'`
+ copts=`echo ${rrule} | sed -e 's/^.*=//' -e 's/\./=/g'`
+ # The variable ${combinations} are the option combinations we will build
+ # multilib from. If the combination in the left part of reuse rule isn't
+ # in this variable, it means no multilib will be built for current reuse
+ # rule. Thus the reuse purpose specified by current rule is meaningless.
+ if expr "${combinations} " : ".*/${combo}/.*" > /dev/null; then
+ combo="/${combo}/"
+ dirout=`./tmpmultilib3 "${combo}" "${todirnames}" "${toosdirnames}" "${enable_multilib}"`
+ copts="/${copts}/"
+ optout=`./tmpmultilib4 "${copts}" "${options}"`
+ # Output the line with all appropriate matches.
+ dirout="${dirout}" optout="${optout}" ./tmpmultilib2
+ else
+ echo "The rule ${rrule} is trying to reuse nonexistent multilib."
+ exit 1
+ fi
+done
+
+# Terminate the list of string.
+echo "NULL"
+echo "};"
+
+# Output all of the matches now as option and that is the same as that, with
+# a semicolon trailer. Include all of the normal options as well.
+# Note, the format of the matches is reversed compared
+# to what we want, so switch them around.
+echo ""
+echo "static const char *const multilib_matches_raw[] = {"
+for match in ${matches}; do
+ l=`echo ${match} | sed -e 's/=.*$//' -e 's/?/=/g'`
+ r=`echo ${match} | sed -e 's/^.*=//' -e 's/?/=/g'`
+ echo "\"${r} ${l};\","
+done
+for set in ${options}; do
+ for opt in `echo ${set} | sed -e 's_[/|]_ _'g`; do
+ echo "\"${opt} ${opt};\","
+ done
+done
+echo "NULL"
+echo "};"
+
+# Output the default options now
+echo ""
+echo "static const char *multilib_extra = \"${extra}\";"
+
+# Output the exclusion rules now
+echo ""
+echo "static const char *const multilib_exclusions_raw[] = {"
+for rule in ${exclusions}; do
+ s=`echo ${rule} | sed -e 's,/, ,g'`
+ echo "\"${s};\","
+done
+echo "NULL"
+echo "};"
+
+# Output the options now
+moptions=`echo ${options} | sed -e 's,[ ][ ]*, ,g'`
+echo ""
+echo "static const char *multilib_options = \"${moptions}\";"
+
+# Finally output the disable flag if specified
+if [ "x${disable_multilib}" = xyes ]; then
+ echo ""
+ echo "#define DISABLE_MULTILIB 1"
+fi
+
+cd ..
+rm -r tmpmultilib.$$
exit 0
projects / gcc.git / blobdiff