# Generate a flat list of symbols to export. # Contributed by Richard Henderson # # This file is part of GCC. # # 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 2, or (at your option) any later # version. # # 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 GCC; see the file COPYING. If not, write to the Free # Software Foundation, 51 Franklin Street, Fifth Floor, Boston MA # 02110-1301, USA. BEGIN { state = "nm"; excluding = 0; if (leading_underscore) prefix = "_"; else prefix = ""; } # Remove comment and blank lines. /^ *#/ || /^ *$/ { next; } # We begin with nm input. Collect the set of symbols that are present # so that we can elide undefined symbols. state == "nm" && /^%%/ { state = "ver"; next; } state == "nm" && ($1 == "U" || $2 == "U") { next; } state == "nm" && NF == 3 { def[$3] = 1; next; } state == "nm" { next; } # Now we process a simplified variant of the Solaris symbol version # script. We have one symbol per line, no semicolons, simple markers # for beginning and ending each section, and %inherit markers for # describing version inheritence. A symbol may appear in more than # one symbol version, and the last seen takes effect. # The magic version name '%exclude' causes all the symbols given that # version to be dropped from the output (unless a later version overrides). NF == 3 && $1 == "%inherit" { next; } NF == 2 && $2 == "{" { if ($1 == "%exclude") excluding = 1; next; } $1 == "}" { excluding = 0; next; } { sym = prefix $1; if (excluding) delete export[sym]; else export[sym] = 1; next; } END { for (sym in export) if (def[sym]) print sym; }