[SCM] GNU Autoconf source repository branch, master, updated. v2.63b-12-g7cff5c9

[Ralf Wildenhues]

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- Log -----------------------------------------------------------------
commit 7cff5c97873d95837d07e95798088ae29fa35990
Author: Ralf Wildenhues <address@hidden>
Date:   Fri Apr 10 16:46:42 2009 +0200

    Document awk and config.status line length limitations.
    
    * doc/autoconf.texi (Configuration Actions): The input to
    config.status should have reasonable line length.
    (Limitations of Usual Tools): Document IRIX, HP-UX awk input
    line length limit.
    Report by Bruno Haible.
    
    Signed-off-by: Ralf Wildenhues <address@hidden>

commit e65a39811a1f6fbfb04065fe2a58c2833b2fd789
Author: Ralf Wildenhues <address@hidden>
Date:   Fri Apr 10 16:44:08 2009 +0200

    Skip `Multiple languages' test if CC is a C++ compiler.
    
    * tests/compile.at (Multiple languages): Before starting the
    test proper, build and run a configure script that tests the
    C compiler only, and skips the test if this is found to be a
    C++ compiler.
    Report by Eric Blake.
    
    Signed-off-by: Ralf Wildenhues <address@hidden>

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog         |   14 ++++++++++++++
 doc/autoconf.texi |    6 +++++-
 tests/compile.at  |   16 ++++++++++++++++
 3 files changed, 35 insertions(+), 1 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 5daf08b..a381a38 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,19 @@
 2009-04-10  Ralf Wildenhues  <address@hidden>
 
+       Document awk and config.status line length limitations.
+       * doc/autoconf.texi (Configuration Actions): The input to
+       config.status should have reasonable line length.
+       (Limitations of Usual Tools): Document IRIX, HP-UX awk input
+       line length limit.
+       Report by Bruno Haible.
+
+       Skip `Multiple languages' test if CC is a C++ compiler.
+       * tests/compile.at (Multiple languages): Before starting the
+       test proper, build and run a configure script that tests the
+       C compiler only, and skips the test if this is found to be a
+       C++ compiler.
+       Report by Eric Blake.
+
        Note that AC_DEFUN is needed for aclocal.
        * doc/autoconf.texi (Coding Style): Public third-party macros
        should be AC_DEFUN'ed.
diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index b5ff0af..32855a9 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -2153,7 +2153,8 @@ for more details.
 
 The @var{inputs} may be absolute or relative file names.  In the latter
 case they are first looked for in the build tree, and then in the source
-tree.
+tree.  Input files should be text files, and a line length below 2000
+bytes should be safe.
 
 @item commands
 Shell commands output literally into @file{config.status}, and
@@ -16366,6 +16367,9 @@ The original version of Awk had a limit of at most 99 
bytes per
 per run of non-special characters in a @code{printf} format, but these
 bugs have been fixed on all practical hosts that we know of.
 
+HP-UX 11.00 and IRIX 6.5 Awk require that input files have a line length
+of at most 3070 bytes.
+
 @item @command{basename}
 @c ---------------------
 @prindex @command{basename}
diff --git a/tests/compile.at b/tests/compile.at
index 6289960..6ca4ef4 100644
--- a/tests/compile.at
+++ b/tests/compile.at
@@ -203,6 +203,22 @@ 
AC_TRY_LINK_FUNC(Be_doomed_if_your_libc_has_a_function_named_like_this,
 
 AT_SETUP([Multiple languages])
 
+# This test should be skipped if the C compiler is a C++ compiler.
+AT_DATA([configure.ac],
+[[AC_INIT
+
+AC_PROG_CC
+AC_COMPILE_IFELSE([
+  AC_LANG_PROGRAM([[
+    #ifdef __cplusplus
+    choke me
+    #endif
+  ]])], [], AS_EXIT([77]))
+]])
+
+AT_CHECK_AUTOCONF
+AT_CHECK_CONFIGURE
+
 AT_DATA([configure.ac],
 [[AC_INIT
 


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