| # Generate a flat list of symbols to export. |
| # Copyright (C) 2007-2023 Free Software Foundation, Inc. |
| # Contributed by Richard Henderson <rth@cygnus.com> |
| # |
| # 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 3, 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 COPYING3. If not see |
| # <http://www.gnu.org/licenses/>. |
| |
| # Options: |
| # "-v leading_underscore=1" : Symbols in map need leading underscore. |
| # "-v pe_dll=1" : Create .DEF file for Windows PECOFF |
| # DLL link instead of map file. |
| |
| 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 inheritance. 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 { |
| |
| if (pe_dll) { |
| print "LIBRARY " pe_dll; |
| print "EXPORTS"; |
| } |
| |
| for (sym in export) |
| if (def[sym] || (pe_dll && def["_" sym])) |
| print sym; |
| } |