mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
build: add Solaris symbol versioning
The versioning facility in the Solaris linker differs from Linux in 3 ways: 1. It does not support globs in linker scripts for symbol versioning -- this is a GNU extension. 2. The linker argument is '-M', instead of '--version-script'. 3. It is picky about line endings. Each symbol or directive must be on a line of it's own. Let's use make_sunver.pl from GCC to generate a version script that works correctly with the Solaris linker. It's function is to correctly expand the globs in the original generated version script. Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Sean McGovern
Luca Barbato
parent
b9ece15a01
commit
c1aac39eac
4
Makefile
4
Makefile
@ -56,7 +56,9 @@ COMPILE_HOSTC = $(call COMPILE,HOSTCC)
|
||||
$(Q)echo '#include "$*.h"' >$@
|
||||
|
||||
%.ver: %.v
|
||||
$(Q)sed 's/$$MAJOR/$($(basename $(@F))_VERSION_MAJOR)/' $^ > $@
|
||||
$(Q)sed 's/$$MAJOR/$($(basename $(@F))_VERSION_MAJOR)/' $^ | sed -e 's/:/:\
|
||||
/' -e 's/; /;\
|
||||
/g' > $@
|
||||
|
||||
%.c %.h: TAG = GEN
|
||||
|
||||
|
||||
@ -52,7 +52,7 @@ $(TOOLOBJS): | tools
|
||||
|
||||
OBJDIRS := $(OBJDIRS) $(dir $(OBJS) $(HOBJS) $(HOSTOBJS) $(TESTOBJS))
|
||||
|
||||
CLEANSUFFIXES = *.d *.o *~ *.h.c *.map *.ver *.gcno *.gcda
|
||||
CLEANSUFFIXES = *.d *.o *~ *.h.c *.map *.ver *.ver-sol2 *.gcno *.gcda
|
||||
DISTCLEANSUFFIXES = *.pc
|
||||
LIBSUFFIXES = *.a *.lib *.so *.so.* *.dylib *.dll *.def *.dll.a
|
||||
|
||||
|
||||
352
compat/solaris/make_sunver.pl
Executable file
352
compat/solaris/make_sunver.pl
Executable file
@ -0,0 +1,352 @@
|
||||
#!/usr/bin/perl -w
|
||||
|
||||
# make_sunver.pl
|
||||
#
|
||||
# Copyright (C) 2010, 2011, 2012, 2013
|
||||
# Free Software Foundation, Inc.
|
||||
#
|
||||
# This file 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 of the License, 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; see the file COPYING.GPLv3. If not see
|
||||
# <http://www.gnu.org/licenses/>.
|
||||
|
||||
# This script takes at least two arguments, a GNU style version script and
|
||||
# a list of object and archive files, and generates a corresponding Sun
|
||||
# style version script as follows:
|
||||
#
|
||||
# Each glob pattern, C++ mangled pattern or literal in the input script is
|
||||
# matched against all global symbols in the input objects, emitting those
|
||||
# that matched (or nothing if no match was found).
|
||||
# A comment with the original pattern and its type is left in the output
|
||||
# file to make it easy to understand the matches.
|
||||
#
|
||||
# It uses elfdump when present (native), GNU readelf otherwise.
|
||||
# It depends on the GNU version of c++filt, since it must understand the
|
||||
# GNU mangling style.
|
||||
|
||||
use FileHandle;
|
||||
use IPC::Open2;
|
||||
|
||||
# Enforce C locale.
|
||||
$ENV{'LC_ALL'} = "C";
|
||||
$ENV{'LANG'} = "C";
|
||||
|
||||
# Input version script, GNU style.
|
||||
my $symvers = shift;
|
||||
|
||||
##########
|
||||
# Get all the symbols from the library, match them, and add them to a hash.
|
||||
|
||||
my %sym_hash = ();
|
||||
|
||||
# List of objects and archives to process.
|
||||
my @OBJECTS = ();
|
||||
|
||||
# List of shared objects to omit from processing.
|
||||
my @SHAREDOBJS = ();
|
||||
|
||||
# Filter out those input archives that have corresponding shared objects to
|
||||
# avoid adding all symbols matched in the archive to the output map.
|
||||
foreach $file (@ARGV) {
|
||||
if (($so = $file) =~ s/\.a$/.so/ && -e $so) {
|
||||
printf STDERR "omitted $file -> $so\n";
|
||||
push (@SHAREDOBJS, $so);
|
||||
} else {
|
||||
push (@OBJECTS, $file);
|
||||
}
|
||||
}
|
||||
|
||||
# We need to detect and ignore hidden symbols. Solaris nm can only detect
|
||||
# this in the harder to parse default output format, and GNU nm not at all,
|
||||
# so use elfdump -s in the native case and GNU readelf -s otherwise.
|
||||
# GNU objdump -t cannot be used since it produces a variable number of
|
||||
# columns.
|
||||
|
||||
# The path to elfdump.
|
||||
my $elfdump = "/usr/ccs/bin/elfdump";
|
||||
|
||||
if (-f $elfdump) {
|
||||
open ELFDUMP,$elfdump.' -s '.(join ' ',@OBJECTS).'|' or die $!;
|
||||
my $skip_arsym = 0;
|
||||
|
||||
while (<ELFDUMP>) {
|
||||
chomp;
|
||||
|
||||
# Ignore empty lines.
|
||||
if (/^$/) {
|
||||
# End of archive symbol table, stop skipping.
|
||||
$skip_arsym = 0 if $skip_arsym;
|
||||
next;
|
||||
}
|
||||
|
||||
# Keep skipping until end of archive symbol table.
|
||||
next if ($skip_arsym);
|
||||
|
||||
# Ignore object name header for individual objects and archives.
|
||||
next if (/:$/);
|
||||
|
||||
# Ignore table header lines.
|
||||
next if (/^Symbol Table Section:/);
|
||||
next if (/index.*value.*size/);
|
||||
|
||||
# Start of archive symbol table: start skipping.
|
||||
if (/^Symbol Table: \(archive/) {
|
||||
$skip_arsym = 1;
|
||||
next;
|
||||
}
|
||||
|
||||
# Split table.
|
||||
(undef, undef, undef, undef, $bind, $oth, undef, $shndx, $name) = split;
|
||||
|
||||
# Error out for unknown input.
|
||||
die "unknown input line:\n$_" unless defined($bind);
|
||||
|
||||
# Ignore local symbols.
|
||||
next if ($bind eq "LOCL");
|
||||
# Ignore hidden symbols.
|
||||
next if ($oth eq "H");
|
||||
# Ignore undefined symbols.
|
||||
next if ($shndx eq "UNDEF");
|
||||
# Error out for unhandled cases.
|
||||
if ($bind !~ /^(GLOB|WEAK)/ or $oth ne "D") {
|
||||
die "unhandled symbol:\n$_";
|
||||
}
|
||||
|
||||
# Remember symbol.
|
||||
$sym_hash{$name}++;
|
||||
}
|
||||
close ELFDUMP or die "$elfdump error";
|
||||
} else {
|
||||
open READELF, 'readelf -s -W '.(join ' ',@OBJECTS).'|' or die $!;
|
||||
# Process each symbol.
|
||||
while (<READELF>) {
|
||||
chomp;
|
||||
|
||||
# Ignore empty lines.
|
||||
next if (/^$/);
|
||||
|
||||
# Ignore object name header.
|
||||
next if (/^File: .*$/);
|
||||
|
||||
# Ignore table header lines.
|
||||
next if (/^Symbol table.*contains.*:/);
|
||||
next if (/Num:.*Value.*Size/);
|
||||
|
||||
# Split table.
|
||||
(undef, undef, undef, undef, $bind, $vis, $ndx, $name) = split;
|
||||
|
||||
# Error out for unknown input.
|
||||
die "unknown input line:\n$_" unless defined($bind);
|
||||
|
||||
# Ignore local symbols.
|
||||
next if ($bind eq "LOCAL");
|
||||
# Ignore hidden symbols.
|
||||
next if ($vis eq "HIDDEN");
|
||||
# Ignore undefined symbols.
|
||||
next if ($ndx eq "UND");
|
||||
# Error out for unhandled cases.
|
||||
if ($bind !~ /^(GLOBAL|WEAK)/ or $vis ne "DEFAULT") {
|
||||
die "unhandled symbol:\n$_";
|
||||
}
|
||||
|
||||
# Remember symbol.
|
||||
$sym_hash{$name}++;
|
||||
}
|
||||
close READELF or die "readelf error";
|
||||
}
|
||||
|
||||
##########
|
||||
# The various types of glob patterns.
|
||||
#
|
||||
# A glob pattern that is to be applied to the demangled name: 'cxx'.
|
||||
# A glob patterns that applies directly to the name in the .o files: 'glob'.
|
||||
# This pattern is ignored; used for local variables (usually just '*'): 'ign'.
|
||||
|
||||
# The type of the current pattern.
|
||||
my $glob = 'glob';
|
||||
|
||||
# We're currently inside `extern "C++"', which Sun ld doesn't understand.
|
||||
my $in_extern = 0;
|
||||
|
||||
# The c++filt command to use. This *must* be GNU c++filt; the Sun Studio
|
||||
# c++filt doesn't handle the GNU mangling style.
|
||||
my $cxxfilt = $ENV{'CXXFILT'} || "c++filt";
|
||||
|
||||
# The current version name.
|
||||
my $current_version = "";
|
||||
|
||||
# Was there any attempt to match a symbol to this version?
|
||||
my $matches_attempted;
|
||||
|
||||
# The number of versions which matched this symbol.
|
||||
my $matched_symbols;
|
||||
|
||||
open F,$symvers or die $!;
|
||||
|
||||
# Print information about generating this file
|
||||
print "# This file was generated by make_sunver.pl. DO NOT EDIT!\n";
|
||||
print "# It was generated by:\n";
|
||||
printf "# %s %s %s\n", $0, $symvers, (join ' ',@ARGV);
|
||||
printf "# Omitted archives with corresponding shared libraries: %s\n",
|
||||
(join ' ', @SHAREDOBJS) if $#SHAREDOBJS >= 0;
|
||||
print "#\n\n";
|
||||
|
||||
print "\$mapfile_version 2\n";
|
||||
|
||||
while (<F>) {
|
||||
# Lines of the form '};'
|
||||
if (/^([ \t]*)(\}[ \t]*;[ \t]*)$/) {
|
||||
$glob = 'glob';
|
||||
if ($in_extern) {
|
||||
$in_extern--;
|
||||
print "$1##$2\n";
|
||||
} else {
|
||||
print;
|
||||
}
|
||||
next;
|
||||
}
|
||||
|
||||
# Lines of the form '} SOME_VERSION_NAME_1.0;'
|
||||
if (/^[ \t]*\}[ \tA-Z0-9_.a-z]+;[ \t]*$/) {
|
||||
$glob = 'glob';
|
||||
# We tried to match symbols agains this version, but none matched.
|
||||
# Emit dummy hidden symbol to avoid marking this version WEAK.
|
||||
if ($matches_attempted && $matched_symbols == 0) {
|
||||
print " hidden:\n";
|
||||
print " .force_WEAK_off_$current_version = DATA S0x0 V0x0;\n";
|
||||
}
|
||||
print; next;
|
||||
}
|
||||
|
||||
# Comment and blank lines
|
||||
if (/^[ \t]*\#/) { print; next; }
|
||||
if (/^[ \t]*$/) { print; next; }
|
||||
|
||||
# Lines of the form '{'
|
||||
if (/^([ \t]*){$/) {
|
||||
if ($in_extern) {
|
||||
print "$1##{\n";
|
||||
} else {
|
||||
print;
|
||||
}
|
||||
next;
|
||||
}
|
||||
|
||||
# Lines of the form 'SOME_VERSION_NAME_1.1 {'
|
||||
if (/^([A-Z0-9_.]+)[ \t]+{$/) {
|
||||
# Record version name.
|
||||
$current_version = $1;
|
||||
# Reset match attempts, #matched symbols for this version.
|
||||
$matches_attempted = 0;
|
||||
$matched_symbols = 0;
|
||||
print "SYMBOL_VERSION $1 {\n";
|
||||
next;
|
||||
}
|
||||
|
||||
# Ignore 'global:'
|
||||
if (/^[ \t]*global:$/) { print; next; }
|
||||
|
||||
# After 'local:', globs should be ignored, they won't be exported.
|
||||
if (/^[ \t]*local:$/) {
|
||||
$glob = 'ign';
|
||||
print;
|
||||
next;
|
||||
}
|
||||
|
||||
# After 'extern "C++"', globs are C++ patterns
|
||||
if (/^([ \t]*)(extern \"C\+\+\"[ \t]*)$/) {
|
||||
$in_extern++;
|
||||
$glob = 'cxx';
|
||||
# Need to comment, Sun ld cannot handle this.
|
||||
print "$1##$2\n"; next;
|
||||
}
|
||||
|
||||
# Chomp newline now we're done with passing through the input file.
|
||||
chomp;
|
||||
|
||||
# Catch globs. Note that '{}' is not allowed in globs by this script,
|
||||
# so only '*' and '[]' are available.
|
||||
if (/^([ \t]*)([^ \t;{}#]+);?[ \t]*$/) {
|
||||
my $ws = $1;
|
||||
my $ptn = $2;
|
||||
# Turn the glob into a regex by replacing '*' with '.*', '?' with '.'.
|
||||
# Keep $ptn so we can still print the original form.
|
||||
($pattern = $ptn) =~ s/\*/\.\*/g;
|
||||
$pattern =~ s/\?/\./g;
|
||||
|
||||
if ($glob eq 'ign') {
|
||||
# We're in a local: * section; just continue.
|
||||
print "$_\n";
|
||||
next;
|
||||
}
|
||||
|
||||
# Print the glob commented for human readers.
|
||||
print "$ws##$ptn ($glob)\n";
|
||||
# We tried to match a symbol to this version.
|
||||
$matches_attempted++;
|
||||
|
||||
if ($glob eq 'glob') {
|
||||
my %ptn_syms = ();
|
||||
|
||||
# Match ptn against symbols in %sym_hash.
|
||||
foreach my $sym (keys %sym_hash) {
|
||||
# Maybe it matches one of the patterns based on the symbol in
|
||||
# the .o file.
|
||||
$ptn_syms{$sym}++ if ($sym =~ /^$pattern$/);
|
||||
}
|
||||
|
||||
foreach my $sym (sort keys(%ptn_syms)) {
|
||||
$matched_symbols++;
|
||||
print "$ws$sym;\n";
|
||||
}
|
||||
} elsif ($glob eq 'cxx') {
|
||||
my %dem_syms = ();
|
||||
|
||||
# Verify that we're actually using GNU c++filt. Other versions
|
||||
# most likely cannot handle GNU style symbol mangling.
|
||||
my $cxxout = `$cxxfilt --version 2>&1`;
|
||||
$cxxout =~ m/GNU/ or die "$0 requires GNU c++filt to function";
|
||||
|
||||
# Talk to c++filt through a pair of file descriptors.
|
||||
# Need to start a fresh instance per pattern, otherwise the
|
||||
# process grows to 500+ MB.
|
||||
my $pid = open2(*FILTIN, *FILTOUT, $cxxfilt) or die $!;
|
||||
|
||||
# Match ptn against symbols in %sym_hash.
|
||||
foreach my $sym (keys %sym_hash) {
|
||||
# No? Well, maybe its demangled form matches one of those
|
||||
# patterns.
|
||||
printf FILTOUT "%s\n",$sym;
|
||||
my $dem = <FILTIN>;
|
||||
chomp $dem;
|
||||
$dem_syms{$sym}++ if ($dem =~ /^$pattern$/);
|
||||
}
|
||||
|
||||
close FILTOUT or die "c++filt error";
|
||||
close FILTIN or die "c++filt error";
|
||||
# Need to wait for the c++filt process to avoid lots of zombies.
|
||||
waitpid $pid, 0;
|
||||
|
||||
foreach my $sym (sort keys(%dem_syms)) {
|
||||
$matched_symbols++;
|
||||
print "$ws$sym;\n";
|
||||
}
|
||||
} else {
|
||||
# No? Well, then ignore it.
|
||||
}
|
||||
next;
|
||||
}
|
||||
# Important sanity check. This script can't handle lots of formats
|
||||
# that GNU ld can, so be sure to error out if one is seen!
|
||||
die "strange line `$_'";
|
||||
}
|
||||
close F;
|
||||
10
configure
vendored
10
configure
vendored
@ -3611,6 +3611,7 @@ case $target_os in
|
||||
echo "hwcap_1 = OVERRIDE;" > mapfile &&
|
||||
add_ldflags -Wl,-M,mapfile
|
||||
nm_default='nm -P -g'
|
||||
SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
|
||||
;;
|
||||
netbsd)
|
||||
disable symver
|
||||
@ -4650,10 +4651,14 @@ enabled xmm_clobber_test &&
|
||||
-Wl,--wrap,sws_scale ||
|
||||
disable xmm_clobber_test
|
||||
|
||||
echo "X{};" > $TMPV
|
||||
echo "X { local: *; };" > $TMPV
|
||||
if test_ldflags -Wl,--version-script,$TMPV; then
|
||||
append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
|
||||
check_cc <<EOF && enable symver_asm_label
|
||||
elif test_ldflags -Wl,-M,$TMPV; then
|
||||
append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
|
||||
fi
|
||||
|
||||
check_cc <<EOF && enable symver_asm_label
|
||||
void ff_foo(void) __asm__ ("av_foo@VERSION");
|
||||
void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
|
||||
EOF
|
||||
@ -4661,7 +4666,6 @@ EOF
|
||||
__asm__(".symver ff_foo,av_foo@VERSION");
|
||||
void ff_foo(void) {}
|
||||
EOF
|
||||
fi
|
||||
|
||||
if [ -z "$optflags" ]; then
|
||||
if enabled small; then
|
||||
|
||||
Loading…
Reference in New Issue
Block a user