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Q&A Is `-isystem` a POSIX cc option?

Is -isystem/path/to/sys/includes a standard compiler option, or is it a compiler extension implemented by gcc, clang, and maybe other compilers? Can I rely on its availability? I couldn't find th...

1 answer  ·  posted 2y ago by alx‭  ·  last activity 2y ago by deleted user

#5: Post edited by user avatar Alexei‭ · 2022-04-23T06:03:40Z (over 2 years ago)
added relevant tag
#4: Post edited by user avatar alx‭ · 2022-04-22T21:57:20Z (over 2 years ago)
tfix
  • Is `-isystem=/path/to/sys/includes` a standard compiler option, or is it a compiler extension implemented by gcc, clang, and maybe other compilers? Can I rely on its availability?
  • I couldn't find the POSIX specification for cc(1).
  • Is `-isystem/path/to/sys/includes` a standard compiler option, or is it a compiler extension implemented by gcc, clang, and maybe other compilers? Can I rely on its availability?
  • I couldn't find the POSIX specification for cc(1).
#3: Post edited by user avatar alx‭ · 2022-04-22T21:49:03Z (over 2 years ago)
  • Is `-isystem=/path/to/sys/includes` a standard compiler option, or is it a compiler extension implemented by gcc, clang and maybe other compilers? Can I rely on its availability?
  • I couldn't find the POSIX specification for cc(1).
  • Is `-isystem=/path/to/sys/includes` a standard compiler option, or is it a compiler extension implemented by gcc, clang, and maybe other compilers? Can I rely on its availability?
  • I couldn't find the POSIX specification for cc(1).
#2: Post edited by user avatar alx‭ · 2022-04-22T21:48:41Z (over 2 years ago)
  • Is `-isystem=/path/to/sys/includes` a standard compiler option, or is it a compiler extension implemented by gcc, clang and maybe other compilers? Can I rely on its availability?
  • I couldn't find the POSIX specification for cc(1).
  • Is `-isystem=/path/to/sys/includes` a standard compiler option, or is it a compiler extension implemented by gcc, clang and maybe other compilers? Can I rely on its availability?
  • I couldn't find the POSIX specification for cc(1).
#1: Initial revision by user avatar alx‭ · 2022-04-22T21:48:31Z (over 2 years ago)
Is `-isystem` a POSIX cc option?

Is `-isystem=/path/to/sys/includes` a standard compiler option, or is it a compiler extension implemented by gcc, clang and maybe other compilers?  Can I rely on its availability?

I couldn't find the POSIX specification for cc(1).