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glibc/conform/list-header-symbols.pl
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#!/usr/bin/perl | |
# Print a list of symbols exported by some headers that would | |
# otherwise be in the user's namespace. | |
# Copyright (C) 2014-2016 Free Software Foundation, Inc. | |
# This file is part of the GNU C Library. | |
# The GNU C Library is free software; you can redistribute it and/or | |
# modify it under the terms of the GNU Lesser General Public | |
# License as published by the Free Software Foundation; either | |
# version 2.1 of the License, or (at your option) any later version. | |
# The GNU C Library 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 | |
# Lesser General Public License for more details. | |
# You should have received a copy of the GNU Lesser General Public | |
# License along with the GNU C Library; if not, see | |
# <http://www.gnu.org/licenses/>. | |
use GlibcConform; | |
use Getopt::Long; | |
GetOptions ('headers=s' => \$headers, 'standard=s' => \$standard, | |
'flags=s' => \$flags, 'cc=s' => \$CC, 'tmpdir=s' => \$tmpdir); | |
@headers = split (/\s+/, $headers); | |
# Extra symbols possibly not found through -aux-info but still | |
# reserved by the standard: either data symbols, or symbols where the | |
# standard leaves unspecified whether the identifier is a macro or | |
# defined with external linkage. | |
$extra_syms{"ISO"} = ["errno", "setjmp", "va_end"]; | |
$extra_syms{"ISO99"} = ["errno", "math_errhandling", "setjmp", "va_end"]; | |
# stdatomic.h not yet covered by conformance tests; as per DR#419, all | |
# the generic functions there or may not be defined with external | |
# linkage (but are reserved in any case). | |
$extra_syms{"ISO11"} = ["errno", "math_errhandling", "setjmp", "va_end"]; | |
# The following lists may not be exhaustive. | |
$extra_syms{"POSIX"} = ["errno", "setjmp", "va_end", "environ", "sigsetjmp", | |
"optarg", "optind", "opterr", "optopt", "tzname"]; | |
$extra_syms{"XPG3"} = ["errno", "setjmp", "va_end", "environ", "signgam", | |
"loc1", "loc2", "locs", "sigsetjmp", "optarg", | |
"optind", "opterr", "optopt", "daylight", "timezone", | |
"tzname"]; | |
$extra_syms{"XPG4"} = ["errno", "setjmp", "va_end", "environ", "signgam", | |
"loc1", "loc2", "locs", "sigsetjmp", "optarg", | |
"optind", "opterr", "optopt", "daylight", "timezone", | |
"tzname", "getdate_err", "h_errno"]; | |
$extra_syms{"UNIX98"} = ["errno", "setjmp", "va_end", "environ", "signgam", | |
"loc1", "loc2", "locs", "sigsetjmp", "optarg", | |
"optind", "opterr", "optopt", "daylight", "timezone", | |
"tzname", "getdate_err", "h_errno"]; | |
$extra_syms{"XOPEN2K"} = ["errno", "setjmp", "va_end", "environ", "signgam", | |
"sigsetjmp", "optarg", "optind", "opterr", "optopt", | |
"daylight", "timezone", "tzname", "getdate_err", | |
"h_errno", "in6addr_any", "in6addr_loopback"]; | |
$extra_syms{"XOPEN2K8"} = ["errno", "setjmp", "va_end", "environ", "signgam", | |
"sigsetjmp", "optarg", "optind", "opterr", "optopt", | |
"daylight", "timezone", "tzname", "getdate_err", | |
"in6addr_any", "in6addr_loopback"]; | |
$extra_syms{"POSIX2008"} = ["errno", "setjmp", "va_end", "environ", | |
"sigsetjmp", "optarg", "optind", "opterr", "optopt", | |
"tzname", "in6addr_any", "in6addr_loopback"]; | |
%user_syms = (); | |
foreach my $header (@headers) { | |
@syms = list_exported_functions ("$CC $flags", $standard, $header, $tmpdir); | |
foreach my $sym (@syms) { | |
if ($sym !~ /^_/) { | |
$user_syms{$sym} = 1; | |
} | |
} | |
} | |
foreach my $sym (@{$extra_syms{$standard}}) { | |
$user_syms{$sym} = 1; | |
} | |
foreach my $sym (sort keys %user_syms) { | |
print "$sym\n"; | |
} |