From a diary of AArch64 porter — POSIX.1 functionality

This post is part 4 of the "From a diary of AArch64 porter" series:

  1. From a diary of AArch64 porter — autoconf
  2. From a diary of AArch64 porter — rpm packaging
  3. From a diary of AArch64 porter — testsuites
  4. From a diary of AArch64 porter — POSIX.1 functionality
  5. From a diary of AArch64 porter — PAGE_SIZE
  6. From a diary of AArch64 porter — vfp precision
  7. From a diary of AArch64 porter — system calls
  8. From a diary of AArch64 porter — parallel builds
  9. From a diary of AArch64 porter — firefighting
  10. From a diary of AArch64 porter — drive-by coding
  11. From a diary of AArch64 porter — manylinux2014

During years of development GCC got several switches which are considered obsolete/deprecated now. And as such they are not available for new ports. Guess what? AArch64 has such status too.

One of switches is “-posix” one. It is not needed anymore as “_POSIX_SOURCE” macro deprecated it:

Macro: _POSIX_SOURCE

If you define this macro, then the functionality from the POSIX.1 standard (IEEE Standard 1003.1) is available, as well as all of the ISO C facilities.

But it happens sometimes (I saw it in pdfedit 0.4.5 which is so old that it still uses Qt3). So if you find it somewhere then please save world with “s/-posix/-D_POSIX_SOURCE/g” :)

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