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[devel] Improved missing symbol handling in checksym.awk; symbols missing in

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both the old and new files can now be optionally ignored, treated as errors
or warnings.
This commit is contained in:
Glenn Randers-Pehrson 2010-12-07 14:42:04 -06:00
parent f1cf90238b
commit d02f246887
4 changed files with 33 additions and 5 deletions
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3
ANNOUNCE
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@ -462,6 +462,9 @@ Version 1.5.0beta56 [December 7, 2010]
Version 1.5.0beta57 [December 7, 2010]
Documented the pngvalid gamma error summary with additional comments and
print statements.
Improved missing symbol handling in checksym.awk; symbols missing in both
the old and new files can now be optionally ignored, treated as errors
or warnings.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
(subscription required; visit

3
CHANGES
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@ -3100,6 +3100,9 @@ Version 1.5.0beta56 [December 7, 2010]
Version 1.5.0beta57 [December 7, 2010]
Documented the pngvalid gamma error summary with additional comments and
print statements.
Improved missing symbol handling in checksym.awk; symbols missing in both
the old and new files can now be optionally ignored, treated as errors
or warnings.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit

22
scripts/checksym.awk
View File

@ -20,6 +20,7 @@ BEGIN{
lasto = 0 # last ordinal value from png.h
mastero = 0 # highest ordinal in master file
symbolo = 0 # highest ordinal in png.h
missing = "error"# log an error on missing symbols
}
# Read existing definitions from the master file (the first
@ -44,6 +45,13 @@ FILENAME==master && NF==2 && $2~/^@/ && $1!~/^;/ {
print master ": bad export line format:", $0
err = 1
}
FILENAME==master && $1==";missing" && NF==2{
# This allows the master file to control how missing symbols
# are handled; symbols that aren't in either the master or
# the new file. Valid values are 'ignore', 'warning' and
# 'error'
missing = $2
}
FILENAME==master {
next
}
@ -112,11 +120,19 @@ END{
}
}
if (unexported != 0) {
# Symbols in the .def but not in the new file are errors
# Symbols in the .def but not in the new file are errors, but
# the 'unexported' symbols aren't in either. By default this
# is an error too (see the setting of 'missing' at the start),
# but this can be reset on the command line or by stuff in the
# file - see the comments above.
if (missing != "ignore") {
if (o-1 > unexported)
print "png.h: warning: unexported symbol definitions:", unexported "-" o-1
print "png.h:", missing ": missing symbols:", unexported "-" o-1
else
print "png.h: warning: unexported symbol definition:", unexported
print "png.h:", missing ": missing symbol:", unexported
if (missing != "warning")
err = 1
}
unexported = 0
}
if (symbol[o] != "" && removed[o] != "") {

6
scripts/pngwin.def
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@ -3,6 +3,12 @@
; On OS/2 uncomment lines preceded by ;0S2
;--------------------------------------------------------------
; make scripts/pngwin.chk will validate this file against the
; build of libpng, the following line tells the check code to
; ignore symbols (ordinal values) that are missing in both
; files.
;missing ignore
; If you give the library an explicit name one or other files
; may need modifying to support the new name on one or more
; systems.