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3.1 Finding modules

There are four ways of finding the names of Gnulib modules that you can use in your package:

• You have the complete module list, sorted according to categories, in https://www.gnu.org/software/gnulib/MODULES.html.
• If you are looking for POSIX function replacements that you don’t know about yet, follow the procedure described in section Finding recommended ISO C and POSIX function substitutes.
• If you are looking for a particular POSIX header or function replacement, look in the chapters ISO C and POSIX Header File Substitutes and ISO C and POSIX Function Substitutes. For headers and functions that are provided by Glibc but not standardized by POSIX, look in the chapters Glibc Header File Substitutes and Glibc Function Substitutes.
• If you have already found the source file in Gnulib and are looking for the module that contains this source file, you can use the command ‘gnulib-tool --find filename’.