DO NOT REPLY [Bug 48067] New: addloadexample.awk of mod_fcgid-2.3.4 fails in Solaris

https://issues.apache.org/bugzilla/show_bug.cgi?id=48067

           Summary: addloadexample.awk of mod_fcgid-2.3.4 fails in Solaris
           Product: Apache httpd-2
           Version: 2.2.13
          Platform: Sun
        OS/Version: Solaris
            Status: NEW
          Severity: normal
          Priority: P2
         Component: mod_fcgid
        AssignedTo: bugs@...
        ReportedBy: strube@...


With mod_fcgid-2.3.4 in Solaris, execution of addloadexample.awk during "make
install" fails with error "awk: syntax error near line 35". Reason: normal
Solaris awk (/usr/bin/awk) does not understand
 if ( ! /^[ \t]*$/ ) print "";
Workaround: use nawk (/usr/bin/nawk) or /usr/xpg4/bin/awk
Possible Patch:
 if ( $0 !~ /^[ \t]*$/ ) print "";

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https://issues.apache.org/bugzilla/show_bug.cgi?id=48067

HWS <strube@...> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|2.2.13                      |2.3-HEAD

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https://issues.apache.org/bugzilla/show_bug.cgi?id=48067

--- Comment #1 from Jeff Trawick <trawick@...> 2009-10-27 09:23:23 UTC ---
Which level of Solaris?

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https://issues.apache.org/bugzilla/show_bug.cgi?id=48067

--- Comment #2 from HWS <strube@...> 2009-10-27 09:31:46 UTC ---
Solaris 10 U7 (5/09). AFAIK, there is no newer patch for /usr/bin/awk.

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https://issues.apache.org/bugzilla/show_bug.cgi?id=48067

Jeff Trawick <trawick@...> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

--- Comment #3 from Jeff Trawick <trawick@...> 2009-11-10 16:54:09 UTC ---
Thanks for the "possible patch;" it worked fine.  I also had to change the
command-line invocation to accept the input file (httpd.conf) from stdin; if
named on the command-line, Solaris awk processes it then waits on stdin.

The fix also goes into mod_ftp, which shares the build logic.

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https://issues.apache.org/bugzilla/show_bug.cgi?id=48067

Jeff Trawick <trawick@...> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

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https://issues.apache.org/bugzilla/show_bug.cgi?id=48067

--- Comment #4 from HWS <strube@...> 2009-11-11 00:28:56 UTC ---
> if named on the command-line, Solaris awk processes it then waits on stdin.

I have NEVER seen such a behaviour. This can only occur if a '-' follows the
input-file name, such as "awk ... inputfile -"

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--- Comment #5 from Jeff Trawick <trawick@...> 2009-11-11 04:11:06 UTC ---
>I have NEVER seen such a behaviour. This can only occur if a '-' follows the
input-file name, such as "awk ... inputfile -"

You're right; my explanation is incorrect.  I'll leave it at this:

This stalls on stdin

/usr/bin/awk -f build/addloadexample.awk -v MODULE=fcgid infile >/dev/null

but this doesn't

/usr/bin/awk -f build/addloadexample.awk infile >/dev/null

(but that is missing the variable substitution)

and neither does this

/usr/bin/awk -f build/addloadexample.awk -v MODULE=fcgid < infile >/dev/null

I'm not able to quickly find the root cause.  Moving "-v MODULE=fcgid" before
the "-f foo.awk" yields a syntax error.

I'm curious if you know the answer; perhaps there's a more correct invocation
for Makefile.apxs.

(This is with /usr/bin/awk on Solaris 10 U5 and OpenSolaris 2009.06.)

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https://issues.apache.org/bugzilla/show_bug.cgi?id=48067

--- Comment #6 from Rainer Jung <rainer.jung@...> 2009-11-11 05:17:45 UTC ---
Solaris awk doesn't know the "-v" flag.

On Solaris nawk and /usr/xpg4/bin/awk can use "-v", but for the normal awk the
syntax is simply "myvar=myval" without "-v".

Wild guess: "-v" is interpreted as "-" (read from stdin) and the "v" might get
dropped.

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https://issues.apache.org/bugzilla/show_bug.cgi?id=48067

--- Comment #7 from HWS <strube@...> 2009-11-11 05:37:58 UTC ---
> On Solaris nawk and /usr/xpg4/bin/awk can use "-v"

Yes, that's the reason. Moreover, with nawk the -v must precede the -f (or
in-line 'program'), whereas with /usr/xpg4/bin/awk it can also follow these.
/usr/bin/awk does not understand -v at all.

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https://issues.apache.org/bugzilla/show_bug.cgi?id=48067

--- Comment #8 from Jeff Trawick <trawick@...> 2009-11-11 07:15:01 UTC ---
A portable invocation which also avoids the confusion over -v with Solaris awk
seems to be

awk -f prog.awk VAR1=val1 VAR2=val2 <infile >outfile

(and <infile can just be infile; it makes no difference)

But there is another aspect which doesn't work correctly but happens to
generate a working config file:  the tolower($0) ~ /.../ in the script isn't
matching, so the LoadModule is added in an unexpected place.

So we're back to the idea of finding a suitable awk.  Any issues with

http://svn.apache.org/viewvc?view=revision&revision=834900

?

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https://issues.apache.org/bugzilla/show_bug.cgi?id=48067

--- Comment #9 from HWS <strube@...> 2009-11-11 07:35:03 UTC ---
/usr/bin/awk in Solaris does not understand tolower(), even though there is no
error; it simply passes its argument unchanged. Only nawk and /usr/xpg4/bin/awk
have a working tolower().
Thus the strategy to select the best awk with configure is right. However,
/usr/xpg4/bin/awk should be explicitly mentioned in the search list before
nawk.

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--- Comment #10 from Jeff Trawick <trawick@...> 2009-11-11 07:51:27 UTC ---
>/usr/xpg4/bin/awk should be explicitly mentioned in the search list before
nawk

nawk worked for me, but I see some notes on the web about a lack of
toupper/tolower in the nawk of some Solaris versions

fixed in r834923

thanks!

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