[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: bug#7864: odd configure bug with dependency checking and conditional
Re: bug#7864: odd configure bug with dependency checking and conditional C++ support
Wed, 19 Jan 2011 19:13:31 +0100
[ adding automake-patches, dropping bug-gnulib ]
thanks for the report!
* Eric Blake wrote on Wed, Jan 19, 2011 at 05:52:08AM CET:
> checking dependency style of :... mkdir: cannot create directory
> `conftest.dir': File or Directory already exists
> cp: accessing `conftest.dir': Bad data
> ./configure: line 28036: cd: conftest.dir: Not a directory
> ./configure: line 28047: ./depcomp: No such file or directory
> First - should autoconf's m4/depend.m4 be changed to use mkdir -p
> instead of mkdir, when creating conftest.dir?
No, that won't help if it is a file, not a directory.
> Should it be taught that
> if CXX is :, that the dependency check should be skipped?
Maybe, but that is irrelevant for the actual bug AFAICS.
> Also, should
> it be made more robust to cd failure, so that it does not leave the rest
> of the configure running in an unknown temporary sub-directory?
This is all that should be needed in Automake. I'll be pushing this to
maint in a little bit.
Allow _AM_DEPENDENCIES to be used later in configure.
* m4/depend.m4 (_AM_DEPENDENCIES): Remove a previously existing
conftest.dir before recreating it.
Report by Eric Blake, from report by Scott McCreary against M4.
diff --git a/m4/depend.m4 b/m4/depend.m4
index 714bc9c..a5726c6 100644
@@ -1,12 +1,12 @@
## -*- Autoconf -*-
# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2009,
-# 2010 Free Software Foundation, Inc.
+# 2010, 2011 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
-# serial 12
+# serial 13
# There are a few dirty hacks below to avoid letting `AC_PROG_CC' be
# written in clear, in which case automake, when reading aclocal.m4,
@@ -46,6 +46,7 @@ AC_CACHE_CHECK([dependency style of $depcc],
# instance it was reported that on HP-UX the gcc test will end up
# making a dummy file named `D' -- because `-MD' means `put the output
# in D'.
+ rm -rf conftest.dir
# Copy depcomp to subdir because otherwise we won't find it if we're
# using a relative directory.
|[Prev in Thread]
||[Next in Thread]|
- Re: bug#7864: odd configure bug with dependency checking and conditional C++ support,
Ralf Wildenhues <=