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GNU/Linux |
CentOS 5.6 |
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m4(1) |
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M4 − manual page for M4 1.4.5
m4 [OPTION]... [FILE]...
Mandatory or optional arguments to long options are mandatory or optional for short options too.
Operation modes:
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−−help |
display this help and exit |
−−version
output version information and exit
−E, −−fatal−warnings
stop execution after first warning
−e, −−interactive
unbuffer output, ignore interrupts
−P, −−prefix−builtins
force a ’m4_’ prefix to all builtins
−Q, −−quiet, −−silent
suppress some warnings for builtins
Preprocessor
features:
−D,
−−define=NAME[=VALUE]
enter NAME has having VALUE, or empty
−I, −−include=DIRECTORY
append this directory to include path
−s, −−synclines
generate ’#line NO "FILE"’ lines
−U, −−undefine=NAME
delete builtin NAME
Limits
control:
−G, −−traditional
suppress all GNU extensions
−H, −−hashsize=PRIME
set symbol lookup hash table size [509]
−L, −−nesting−limit=NUMBER
change artificial nesting limit [1024]
Frozen state
files:
−F,
−−freeze−state=FILE
produce a frozen state on FILE at end
−R, −−reload−state=FILE
reload a frozen state from FILE at start
Debugging:
−d, −−debug[=FLAGS]
set debug level (no FLAGS implies ’aeq’)
−l, −−arglength=NUM
restrict macro tracing size
−o, −−error−output=FILE
redirect debug and trace output
−t, −−trace=NAME
trace NAME when it will be defined
FLAGS is any of:
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a |
show actual arguments |
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c |
show before collect, after collect and after call |
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e |
show expansion |
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f |
say current input file name |
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i |
show changes in input files |
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l |
say current input line number |
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p |
show results of path searches |
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q |
quote values as necessary, with a or e flag |
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t |
trace for all macro calls, not only traceon’ed |
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V |
shorthand for all of the other flags |
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x |
add a unique macro call id, useful with c flag |
If defined, the environment variable ’M4PATH’ is a colon−separated list of directories included after any specified by ’−I’.
If no FILE or if FILE is ’−’, standard input is read.
Exit status is 0 for success, 1 for failure, or whatever value was passed to the m4exit macro.
Written by Rene’ Seindal.
Copyright
© 2006 Free Software Foundation, Inc.
This is free software; see the source for copying
conditions. There is NO warranty; not even for
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
The full documentation for M4 is maintained as a Texinfo manual. If the info and M4 programs are properly installed at your site, the command
info M4
should give you access to the complete manual.
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m4(1) | |