From: "Bart Schaefer" <schaefer@candle.brasslantern.com>
To: <zsh-workers@sunsite.dk>
Cc: Peter Whaite <peta@cortexmachina.com>
Subject: PATCH: Re: comptest* failed to load module: zsh/termcap
Date: Mon, 30 Apr 2001 17:16:05 +0000 [thread overview]
Message-ID: <1010430171605.ZM9038@candle.brasslantern.com> (raw)
In-Reply-To: <Pine.SV4.4.33.0104302044140.13810-100000@itsrm2.mow.siemens.ru>
On Apr 30, 8:47pm, Andrej Borsenkow wrote:
} Subject: Re: comptest* failed to load module: zsh/termcap
}
} On Mon, 30 Apr 2001, Bart Schaefer wrote:
}
} > Modules/termcap.o: In function `scantermcap':
} > Modules/termcap.o(.text+0x450): undefined reference to `boolcodes'
} >
} > So the problem is that configure.in is still missing the AC_SEARCH_LIBS
} > call to find the ncurses libraries (it does one only for tgetent, which
} > finds old termcap first).
}
} But it should not find the above variables then and should not try use
} them (or use local static placeholders). So, the question is - why
} configure sets HAVE_BOOLCODES and others at all? I believe, we finally
} cleaned this up ... are you sure you are using the lates CVS?
Yes, I did a "cvs up -d -P" immediately before buiding.
Checking config.log, it turns out that even without -lcurses in the link,
AC_TRY_LINK is succeeding for boolcodes et al. -- possibly gcc is doing
an optimization and throwing out the `test' variable because it's not
used, and therefore not actually trying to find boolcodes at link time:
configure:3112: checking if boolcodes is available
configure:3124: gcc -o conftest -Wall -Wno-implicit -Wmissing-prototypes -O2 -D _LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 conftest.c -ltermcap -lm -lc 1>&5
configure: In function `main':
configure:3120: warning: initialization discards qualifiers from pointer target type
configure:3120: warning: unused variable `test'
The compilation then succeeds and goes on to the next thing. On my RH5.2
system at home, there's a link failure at this point.
Sure enough, if I change configure.in to:
#include <term.h>], [char **test = boolcodes; printf(*test);],
(so that `test' is used), then AC_TRY_LINK fails and all is well. We've
been bitten by an overoptimizing compiler.
Index: configure.in
===================================================================
--- configure.in 2001/04/27 05:21:54 1.4
+++ configure.in 2001/04/30 17:13:21
@@ -533,36 +533,36 @@
AC_TRY_LINK([#ifdef TERM_H_NEEDS_CURSES_H
#include <curses.h>
#endif
-#include <term.h>], [char **test = boolcodes;],
+#include <term.h>], [char **test = boolcodes; printf(*test);],
AC_DEFINE(HAVE_BOOLCODES) boolcodes=yes, boolcodes=no)
AC_MSG_RESULT($boolcodes)
AC_MSG_CHECKING(if numcodes is available)
AC_TRY_LINK([#ifdef TERM_H_NEEDS_CURSES_H
#include <curses.h>
#endif
-#include <term.h>], [char **test = numcodes;],
+#include <term.h>], [char **test = numcodes; printf(*test);],
AC_DEFINE(HAVE_NUMCODES) numcodes=yes, numcodes=no)
AC_MSG_RESULT($numcodes)
AC_MSG_CHECKING(if strcodes is available)
AC_TRY_LINK([#ifdef TERM_H_NEEDS_CURSES_H
#include <curses.h>
#endif
-#include <term.h>], [char **test = strcodes;],
+#include <term.h>], [char **test = strcodes; printf(*test);],
AC_DEFINE(HAVE_STRCODES) strcodes=yes, strcodes=no)
AC_MSG_RESULT($strcodes)
AC_MSG_CHECKING(if boolnames is available)
AC_TRY_LINK([#include <curses.h>
-#include <term.h>], [char **test = boolnames;],
+#include <term.h>], [char **test = boolnames; printf(*test);],
AC_DEFINE(HAVE_BOOLNAMES) boolnames=yes, boolnames=no)
AC_MSG_RESULT($boolnames)
AC_MSG_CHECKING(if numnames is available)
AC_TRY_LINK([#include <curses.h>
-#include <term.h>], [char **test = numnames;],
+#include <term.h>], [char **test = numnames; printf(*test);],
AC_DEFINE(HAVE_NUMNAMES) numnames=yes, numnames=no)
AC_MSG_RESULT($numnames)
AC_MSG_CHECKING(if strnames is available)
AC_TRY_LINK([#include <curses.h>
-#include <term.h>], [char **test = strnames;],
+#include <term.h>], [char **test = strnames; printf(*test);],
AC_DEFINE(HAVE_STRNAMES) strnames=yes, strnames=no)
AC_MSG_RESULT($strnames)
--
Bart Schaefer Brass Lantern Enterprises
http://www.well.com/user/barts http://www.brasslantern.com
Zsh: http://www.zsh.org | PHPerl Project: http://phperl.sourceforge.net
next prev parent reply other threads:[~2001-04-30 17:16 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-04-27 19:54 Peter Whaite
2001-04-28 6:10 ` Bart Schaefer
2001-04-28 8:55 ` Andrej Borsenkow
2001-04-30 15:44 ` Peter Whaite
2001-04-30 16:30 ` Bart Schaefer
2001-04-30 16:47 ` Andrej Borsenkow
2001-04-30 17:16 ` Bart Schaefer [this message]
2001-04-30 18:54 ` Peter Whaite
2001-04-30 19:12 ` Bart Schaefer
2001-04-30 15:32 ` Peter Whaite
-- strict thread matches above, loose matches on Subject: below --
1997-01-31 10:47 history-search-backward Peter Stephenson
1997-01-31 12:16 ` history-search-backward Zefram
1997-01-31 12:42 ` history-search-backward Peter Stephenson
1997-01-31 15:02 ` history-search-backward Bart Schaefer
1997-01-31 15:23 ` history-search-backward Vinnie Shelton
1997-01-31 19:02 ` history-search-backward Zoltan Hidvegi
1997-01-31 19:13 ` history-search-backward Wayne Davison
1996-12-13 2:30 fifo configure check Zoltan Hidvegi
1996-10-31 14:41 Parameter expansion bug? Anthony Heading
1996-10-31 15:13 ` Hrvoje Niksic
1996-10-31 16:12 ` Zoltan Hidvegi
1996-10-31 20:49 ` Anthony Heading
[not found] <17651.199607222123@stone.dcs.warwick.ac.uk>
1996-07-23 14:08 ` Bug in case stmt with '(' Zoltan Hidvegi
1996-07-23 16:25 ` Bart Schaefer
1996-06-22 20:12 BUG: useheap in doexpandhist() Bart Schaefer
1996-06-02 17:59 Builtin append() and prepend() to PATH, CDPATH, etc Fung-Chai Lim
1996-06-02 21:26 ` Zoltan Hidvegi
[not found] ` <1062.199606041027@stone.dcs.warwick.ac.uk>
1996-04-10 10:31 History file locking? Russell Senior
1996-04-10 12:12 ` Zefram
1996-04-10 12:41 ` Zoltan Hidvegi
1996-04-10 12:50 ` Zefram
1996-04-10 21:21 ` Zoltan Hidvegi
[not found] ` <A.Main@dcs.warwick.ac.uk>
1996-04-10 16:26 ` Barton E. Schaefer
1996-04-10 17:08 ` Anthony Heading
[not found] ` <aheading@jpmorgan.com>
1996-04-10 17:12 ` Barton E. Schaefer
1996-04-10 18:03 ` Anthony Heading
1996-06-05 21:25 ` Builtin append() and prepend() to PATH, CDPATH, etc Bart Schaefer
[not found] ` <schaefer@candle.brasslantern.com>
1996-06-10 19:22 ` Clinton Bunch
1996-06-10 19:54 ` Bart Schaefer
1996-06-10 20:24 ` Hrvoje Niksic
1996-06-10 20:58 ` Clinton Bunch
1996-06-24 18:26 ` BUG: useheap in doexpandhist() Barton E. Schaefer
1996-06-24 19:11 ` Zoltan Hidvegi
1996-06-24 21:20 ` Barton E. Schaefer
1996-06-25 0:01 ` Zoltan Hidvegi
1996-06-25 0:22 ` Barton E. Schaefer
1996-07-23 20:01 ` Bug in case stmt with '(' Morris M. Siegel
1996-07-23 21:55 ` Bart Schaefer
1996-07-24 8:29 ` Zefram
1996-07-24 9:52 ` Peter Stephenson
1996-07-24 11:10 ` Bart Schaefer
1996-07-24 14:16 ` Zoltan Hidvegi
1996-03-12 19:03 Buffered stderr on Linux Zoltan Hidvegi
1996-03-12 19:24 ` Bart Schaefer
1996-03-12 20:26 ` Zoltan Hidvegi
1996-03-12 23:17 ` Zoltan Hidvegi
1996-03-13 0:16 ` Steven L Baur
[not found] ` <hzoli@cs.elte.hu>
1996-03-16 18:46 ` Bart Schaefer
1996-04-10 21:41 ` History file locking? Barton E. Schaefer
1996-04-10 22:16 ` Daniel Dignam
1996-06-26 13:51 ` Use of qualifiers without glob pattern? Bart Schaefer
1996-06-26 14:01 ` Regression tests Bas V. de Bakker
1996-06-26 14:52 ` Use of qualifiers without glob pattern? Zoltan Hidvegi
1996-06-26 15:54 ` Bart Schaefer
1996-06-27 1:03 ` Zoltan Hidvegi
1996-10-31 16:55 ` Parameter expansion bug? Bart Schaefer
1996-10-31 16:57 ` Hrvoje Niksic
1996-10-31 17:04 ` Zoltan Hidvegi
1996-10-31 17:47 ` Bart Schaefer
1996-12-13 3:37 ` fifo configure check Bart Schaefer
1996-12-13 8:58 ` fifo configure check (seems to work here: Solaris 2.4) C. v. Stuckrad
1996-12-13 14:44 ` fifo configure check Zefram
1996-12-13 17:33 ` Zoltan Hidvegi
[not found] ` <wayne@clari.net>
1997-01-31 22:01 ` history-search-backward Bart Schaefer
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