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NAME

ifnames - print identifiers that a package uses in C preprocessor
conditionals
 

SYNOPSIS

DESCRIPTION

ifnames can help when writing a configure.in for a software package. It prints the identifiers that the package already uses in C preprocessor conditionals. If a package has already been set up to have some portability, this program can help you figure out what its configure needs to check for. It may help fill in some gaps in a configure.in generated by autoscan (see autoscan(1)).

ifnames scans all of the C source files named on the command line (or the standard input, if none are given) and writes to the standard output a sorted list of all the identifiers that appear in those files in #if, #elif, #ifdef, or #ifndef directives. It prints each identifier on a line, followed by a space-separated list of the files in which that identifier occurs.

ifnames accepts the following options:

--help

-h

Print a summary of the command line options and exit.

--macrodir=DIR

-m DIR

Look for the installed macro files in directory DIR. You can also set the AC_MACRODIR environment variable to a directory; this option overrides the environment variable.

--version

Print the version number of Autoconf and exit.

SEE ALSO

AUTHORS

Index

NAME

SYNOPSIS

DESCRIPTION

SEE ALSO

AUTHORS

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