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Diffstat (limited to 'contrib/gcc/opts.sh')
| -rw-r--r-- | contrib/gcc/opts.sh | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/contrib/gcc/opts.sh b/contrib/gcc/opts.sh new file mode 100644 index 0000000..871c855 --- /dev/null +++ b/contrib/gcc/opts.sh @@ -0,0 +1,175 @@ +#!/bin/sh +# +# Copyright (C) 2003 Free Software Foundation, Inc. +# Contributed by Neil Booth, May 2003. +# +# This program 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. +# +# This program 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 this program; if not, write to the Free Software +# Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# +# Usage: opts.sh moveifchange srcdir outfile.c outfile.h file1.opt [ ...] + +# Always operate in the C locale. +LANG=C +LANGUAGE=C +LC_ALL=C +export LANG LANGUAGE LC_ALL + +# Set AWK if environment has not already set it. +AWK=${AWK-awk} + +SORT=sort # Could be /bin/sort or /usr/bin/sort + +MOVEIFCHANGE=$1; shift +C_FILE=$1; shift +H_FILE=$1; shift +TMP_C_FILE=tmp-${C_FILE} +TMP_H_FILE=tmp-${H_FILE} + +${AWK} ' + # Ignore comments and blank lines + /^[ \t]*(;|$)/ { next } + # Note that RS="" falls foul of gawk 3.1.2 bugs + /^[^ \t]/ { record = $0 + do { getline tmp; + if (!(tmp ~ "^[ \t]*(;|$)")) + record = record "\034" tmp + } while (tmp != "") + print record + } +' "$@" | ${SORT} | ${AWK} ' + function switch_flags (flags, result) + { + flags = " " flags " " + result = "0" + for (j = 0; j < n_langs; j++) { + regex = " " langs[j] " " + gsub ( "\\+", "\\+", regex ) + if (flags ~ regex) + result = result " | " macros[j] + } + if (flags ~ " Common ") result = result " | CL_COMMON" + if (flags ~ " Joined ") result = result " | CL_JOINED" + if (flags ~ " JoinedOrMissing ") \ + result = result " | CL_JOINED | CL_MISSING_OK" + if (flags ~ " Separate ") result = result " | CL_SEPARATE" + if (flags ~ " RejectNegative ") result = result " | CL_REJECT_NEGATIVE" + if (flags ~ " UInteger ") result = result " | CL_UINTEGER" + if (flags ~ " Undocumented ") result = result " | CL_UNDOCUMENTED" + sub( "^0 \\| ", "", result ) + return result + } + + BEGIN { + FS = "\034" + n_opts = 0 + n_langs = 0 + } + +# Collect the text and flags of each option into an array + { + if ($1 == "Language") { + langs[n_langs] = $2 + n_langs++; + } else { + opts[n_opts] = $1 + flags[n_opts] = $2 + help[n_opts] = $3 + n_opts++; + } + } + +# Dump out an enumeration into a .h file, and an array of options into a +# C file. Combine the flags of duplicate options. + END { + c_file = "'${TMP_C_FILE}'" + h_file = "'${TMP_H_FILE}'" + realh_file = "'${H_FILE}'" + comma = "," + + print "/* This file is auto-generated by opts.sh. */\n" > c_file + print "#include <intl.h>" >> c_file + print "#include \"" realh_file "\"" >> c_file + print "#include \"opts.h\"\n" >> c_file + print "const char * const lang_names[] =\n{" >> c_file + + print "/* This file is auto-generated by opts.sh. */\n" > h_file + for (i = 0; i < n_langs; i++) { + macros[i] = "CL_" langs[i] + gsub( "[^A-Za-z0-9_]", "X", macros[i] ) + s = substr(" ", length (macros[i])) + print "#define " macros[i] s " (1 << " i ")" >> h_file + print " \"" langs[i] "\"," >> c_file + } + + print " 0\n};\n" >> c_file + print "const unsigned int cl_options_count = N_OPTS;\n" >> c_file + print "const struct cl_option cl_options[] =\n{" >> c_file + + print "\nenum opt_code\n{" >> h_file + + for (i = 0; i < n_opts; i++) + back_chain[i] = "N_OPTS"; + + for (i = 0; i < n_opts; i++) { + # Combine the flags of identical switches. Switches + # appear many times if they are handled by many front + # ends, for example. + while( i + 1 != n_opts && opts[i] == opts[i + 1] ) { + flags[i + 1] = flags[i] " " flags[i + 1]; + i++; + } + + len = length (opts[i]); + enum = "OPT_" opts[i] + if (opts[i] == "finline-limit=") + enum = enum "eq" + gsub ("[^A-Za-z0-9]", "_", enum) + + # If this switch takes joined arguments, back-chain all + # subsequent switches to it for which it is a prefix. If + # a later switch S is a longer prefix of a switch T, T + # will be back-chained to S in a later iteration of this + # for() loop, which is what we want. + if (flags[i] ~ "Joined") { + for (j = i + 1; j < n_opts; j++) { + if (substr (opts[j], 1, len) != opts[i]) + break; + back_chain[j] = enum; + } + } + + s = substr(" ", length (opts[i])) + if (i + 1 == n_opts) + comma = "" + + if (help[i] == "") + hlp = "0" + else + hlp = "N_(\"" help[i] "\")"; + + printf(" %s,%s/* -%s */\n", enum, s, opts[i]) >> h_file + printf(" { \"-%s\",\n %s,\n %s, %u, %s }%s\n", + opts[i], hlp, back_chain[i], len, + switch_flags(flags[i]), comma) >> c_file + } + + print " N_OPTS\n};" >> h_file + print "};" >> c_file + } +' + +# Copy the newly generated files back to the correct names only if different. +# This is to prevent a cascade of file rebuilds when not necessary. +${MOVEIFCHANGE} ${TMP_H_FILE} ${H_FILE} +${MOVEIFCHANGE} ${TMP_C_FILE} ${C_FILE} |
