forked from Imagelibrary/binutils-gdb
7cf99fb1c7
const works different in C vs C++. In C++, a global "const" variable has internal linkage by default, resulting in link errors like: ... extension.o: In function `get_ext_lang_defn(extension_language)': gdb/extension.c:126: undefined reference to `extension_language_guile' gdb/extension.c:124: undefined reference to `extension_language_guile' ... The fix is to define exported const objects with "extern const". But that in C would not be a definition. So we need to #ifdef C vs C++ in this case. EXPORTED_CONST comes from include/ansidecl.h, but in the feature_to_c.sh case I think it's better to leave the script with no dependencies. gdb/ChangeLog: 2015-02-27 Pedro Alves <palves@redhat.com> * cp-valprint.c (vtbl_ptr_name): Use EXPORTED_CONST. * guile/guile.c (extension_language_guile): Use EXPORTED_CONST. * features/feature_to_c.sh: Tag the generated xml_builtin array with extern const in C++ mode.
82 lines
2.3 KiB
Bash
82 lines
2.3 KiB
Bash
#!/bin/sh
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# Convert text files to compilable C arrays.
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#
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# Copyright (C) 2007-2015 Free Software Foundation, Inc.
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#
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# This file is part of GDB.
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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 3 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
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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output=$1
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shift
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if test -z "$output" || test -z "$1"; then
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echo "Usage: $0 OUTPUTFILE INPUTFILE..."
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exit 1
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fi
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if test -e "$output"; then
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echo "Output file \"$output\" already exists; refusing to overwrite."
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exit 1
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fi
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for input; do
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arrayname=xml_feature_`echo $input | sed 's,.*/,,; s/[-.]/_/g'`
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${AWK:-awk} 'BEGIN { n = 0
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print "static const char '$arrayname'[] = {"
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for (i = 0; i < 255; i++)
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_ord_[sprintf("%c", i)] = i
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} {
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split($0, line, "");
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printf " "
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for (i = 1; i <= length($0); i++) {
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c = line[i]
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if (c == "'\''") {
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printf "'\''\\'\'''\'', "
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} else if (c == "\\") {
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printf "'\''\\\\'\'', "
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} else if (_ord_[c] >= 32 && _ord_[c] < 127) {
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printf "'\''%s'\'', ", c
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} else {
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printf "'\''\\%03o'\'', ", _ord_[c]
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}
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if (i % 10 == 0)
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printf "\n "
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}
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printf "'\''\\n'\'', \n"
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} END {
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print " 0 };"
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}' < $input >> $output
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done
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echo >> $output
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echo "#ifdef __cplusplus" >> $output
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echo "# define EXPORTED_CONST extern const" >> $output
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echo "#else" >> $output
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echo "# define EXPORTED_CONST const" >> $output
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echo "#endif" >> $output
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echo "EXPORTED_CONST char *const xml_builtin[][2] = {" >> $output
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for input; do
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basename=`echo $input | sed 's,.*/,,'`
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arrayname=xml_feature_`echo $input | sed 's,.*/,,; s/[-.]/_/g'`
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echo " { \"$basename\", $arrayname }," >> $output
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done
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echo " { 0, 0 }" >> $output
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echo "};" >> $output
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