GNU m4 is an implementation of the traditional
Unix macro processor. It is mostly SVR4
compatible, although it has some extensions (for
example, handling more than 9 positional
parameters to macros). GNU m4 also has built-in
functions for including files, running shell
commands, doing arithmetic, etc. Autoconf needs
GNU m4 for generating configure' scripts, but not
for running them.
Project Release infomations and Project Resources. Note that these informations are from this projects Freecode.com page and the downloads themselves may not be hosted with SourceForge.JP.
A longstanding bug where the "format" builtin could crash on an invalid format string was fixed. Compilation against newer glibc and on AIX 7.1BETA was fixed. A number of portability improvements were inherited from gnulib.
A security issue in "make dist", reported as CVE-2009-4029, was resolved. The new "-g"/"--gnu" command-line option now overrides "-G"/"--traditional", in preparation for not supporting GNU extensions and behaving POSIXly correct without it. The "-L"/"--nesting-limit" command-line option now defaults to 0 for unlimited on platforms that can detect and deal with stack overflow. The "--debugfile" command line option now defaults to stderr. The input engine was optimized for faster processing. Several performance improvements were made. Several portability issues and regressions were resolved.
Minor bugfixes, Minor security fixes, Stable
Security fixes were made for the -F option. A
regression introduced in 1.4.9b in the "divert"
builtin was fixed. The output of the "maketemp"
and "mkstemp" builtins is now quoted if a file was
created. The "defn" builtin was enhanced to
support concatenation of multiple text arguments,
as required by POSIX. The "format" builtin was
enhanced to parse all C99 floating point numbers.
The "index" builtin was enhanced to guarantee