--acdir=dir- Look for the macro files in dir instead of the installation
directory. This is typically used for debugging.
--diff[=command]- Run command on M4 file that would be installed or overwritten
by --install. The default command is ‘diff -u’.
This option implies --install and --dry-run.
--dry-run- Do not actually overwrite (or create) aclocal.m4 and M4
files installed by --install.
--help- Print a summary of the command line options and exit.
-I dir- Add the directory dir to the list of directories searched for
.m4 files.
--install- Install system-wide third-party macros into the first directory
specified with ‘-I dir’ instead of copying them in the
output file.
When this option is used, and only when this option is used,
aclocal will also honor ‘#serial NUMBER’ lines
that appear in macros: an M4 file is ignored if there exists another
M4 file with the same basename and a greater serial number in the
search path (see Serials).
--force- Always overwrite the output file. The default is to overwrite the output
file only when really needed, i.e., when its contents changes or if one
of its dependencies is younger.
This option forces the update of aclocal.m4 (or the file
specified with --output below) and only this file, it has
absolutely no influence on files that may need to be installed by
--install.
--output=file- Cause the output to be put into file instead of aclocal.m4.
--print-ac-dir- Prints the name of the directory that aclocal will search to
find third-party .m4 files. When this option is given, normal
processing is suppressed. This option can be used by a package to
determine where to install a macro file.
--verbose- Print the names of the files it examines.
--version- Print the version number of Automake and exit.
-W CATEGORY
--warnings=category- Output warnings falling in category. category can be
one of:
syntax- dubious syntactic constructs, underquoted macros, unused macros, etc.
unsupported- unknown macros
all- all the warnings, this is the default
none- turn off all the warnings
error- treat warnings as errors
All warnings are output by default.
The environment variable WARNINGS is honored in the same
way as it is for automake (see Invoking Automake).