Re: Crash fix on Windows/MinGW

[Eric PAIRE]

Oups,

I sent to you a wrong version of the patch.... Here is the right one.

Sorry,
Eric

Eric PAIRE wrote:

> To all,
>
> I have been facing a problem on Windows/MinGW with autoconf. The 
> configure generated script crashes when called via "config.status 
> --recheck":
> ../src/configure: config.log: Permission denied
>
> The reason is that config.log cannot be truncated by configure because 
> config.status already opened it (and Windows forbids truncating an 
> open file). Here is the fix (tested on Windows/MinGW).
>
> Best regards,
> Eric

--- lib/autoconf/general.m4~    2006-04-14 12:37:15.913263000 +0200
+++ lib/autoconf/general.m4     2006-04-14 12:57:01.063010000 +0200
@@ -1103,6 +1103,11 @@
 m4_define([_AC_INIT_CONFIG_LOG],
 [m4_divert_text([INIT_PREPARE],
 [m4_define([AS_MESSAGE_LOG_FD], 5)dnl
+exec AS_MESSAGE_LOG_FD>/dev/null
+# Redirect first AS_MESSAGE_LOG_FD to /dev/null in order to be able to
+# truncate config.log in the case configure is run by "config.status --recheck"
+# with AS_MESSAGE_LOG_FD already opened on config.log (on Windows, truncating
+# an open file is forbidden).
 exec AS_MESSAGE_LOG_FD>config.log
 cat >&AS_MESSAGE_LOG_FD <<_ACEOF
 This file contains any messages produced by compilers while
--- ChangeLog~  2006-04-14 12:44:01.000000000 +0200
+++ ChangeLog   2006-04-14 12:59:14.811001000 +0200
@@ -1,3 +1,9 @@
+2006-04-14  Eric PAIRE  <address@hidden>
+
+       * lib/autoconf/general.m4 (_AC_INIT_CONFIG_LOG): Redirect first
+       AS_MESSAGE_LOG_FD to /dev/null in order to be able to truncate
+       config.log if already opened by "config.status --recheck" (on Windows).
+
 2006-04-14  Stepan Kasal  <address@hidden>
 
        * lib/Autom4te/FileUtils.pm (find_file): Fix a typo in the