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Make GenLibDeps.pl more robust in the face of broken piping problems.

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Patch by Kenneth Boyd!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57057 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2008-10-04 18:03:46 +00:00
parent c82b6a1ed2
commit 8d59af356f
1 changed files with 26 additions and 0 deletions
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26
utils/GenLibDeps.pl
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@ -114,6 +114,32 @@ sub gen_one_entry {
}
}
close UNDEFS;
unless(keys %DepLibs) {
# above failed
open UNDEFS, "$nmPath -g -u $Directory/$lib |";
while (<UNDEFS>) {
# to bypass non-working sed
if (' ' eq substr($_,0,2) and index($_,'U ')) {
$_ = substr($_,index($_,'U ')+2)
};
$_ = substr($_,index($_,' *U ')+5) if -1!=index($_,' *U ');
chomp;
my $lib_printed = 0;
if (defined($libdefs{$_}) && $libdefs{$_} ne $lib) {
$DepLibs{$libdefs{$_}} = [] unless exists $DepLibs{$libdefs{$_}};
push(@{$DepLibs{$libdefs{$_}}}, $_);
} elsif (defined($objdefs{$_}) && $objdefs{$_} ne $lib) {
my $libroot = $lib;
$libroot =~ s/lib(.*).a/$1/;
if ($objdefs{$_} ne "$libroot.o") {
$DepLibs{$objdefs{$_}} = [] unless exists $DepLibs{$objdefs{$_}};
push(@{$DepLibs{$objdefs{$_}}}, $_);
}
}
}
}
for my $key (sort keys %DepLibs) {
if ($FLAT) {
print " $key";