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Commit34ff542

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MSVC: Build ~35% faster by calling dumpbin just once per directory.
Peifeng QiuDiscussion:https://postgr.es/m/CABmtVJiKXQjast0dQD-8KAtfm8XmyYxo-4Dc7+M+fBr8JRTqkw@mail.gmail.com
1 parent726cc42 commit34ff542

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1 file changed

+6
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‎src/tools/msvc/gendef.pl‎

Lines changed: 6 additions & 21 deletions
Original file line numberDiff line numberDiff line change
@@ -1,7 +1,6 @@
11
use strict;
22
use warnings;
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use 5.8.0;
4-
use File::Spec::Functionsqw(splitpath catpath);
54
use List::Utilqw(max);
65

76
my@def;
@@ -12,17 +11,6 @@
1211
# src/tools/msvc/gendef.pl
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#
1413

15-
subdumpsyms
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{
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my ($objfile,$symfile) =@_;
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my ($symvol,$symdirs,$symbase) = splitpath($symfile);
19-
my$tmpfile = catpath($symvol,$symdirs,"symbols.out");
20-
system("dumpbin /symbols /out:$tmpfile$_ >NUL")
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&&die"Could not call dumpbin";
22-
rename($tmpfile,$symfile);
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return;
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}
25-
2614
# Given a symbol file path, loops over its contents
2715
# and returns a list of symbols of interest as a dictionary
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# of 'symbolname' -> symtype, where symtype is:
@@ -177,15 +165,12 @@ sub usage
177165

178166
my%def = ();
179167

180-
while (<$ARGV[0]/*.obj>)## no critic (RequireGlobFunction);
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{
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my$objfile =$_;
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my$symfile =$objfile;
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$symfile =~s/\.obj$/.sym/i;
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dumpsyms($objfile,$symfile);
186-
print".";
187-
extract_syms($symfile, \%def);
188-
}
168+
my$symfile ="$ARGV[0]/all.sym";
169+
my$tmpfile ="$ARGV[0]/tmp.sym";
170+
system("dumpbin /symbols /out:$tmpfile$ARGV[0]/*.obj >NUL")
171+
&&die"Could not call dumpbin";
172+
rename($tmpfile,$symfile);
173+
extract_syms($symfile, \%def);
189174
print"\n";
190175

191176
writedef($deffile,$platform, \%def);

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