autoconf: undocumented limitation

[Bruno Haible]

Hi,

Files that are used as arguments of AC_CONFIG_FILES must have a maximum line
length (not counting the newline) of at most 3070. This limitation is not
documented in the autoconf manual. Could you please document it?

Past this limit, config.status fails on HP-UX 11.00 and IRIX 6.5.


On HP-UX 11.00:
-------------------------------------------------------------------------
config.status: creating lib/Makefile
awk: Input line # Reproduce by: gnul cannot be longer than 3,000 bytes.
 The input line number is 25.
 The source line number is 437.
config.status: error: could not create lib/Makefile
-------------------------------------------------------------------------

It works with line length 3070, fails with line length 3071.


On IRIX 6.5:
-------------------------------------------------------------------------
config.status: creating lib/Makefile
Input record `# Reproduce by: gnul...' too long
Input record number 25
Source line number 437
config.status: error: could not create lib/Makefile
-------------------------------------------------------------------------

It works with line length 3071, fails with line length 3072.


Bruno