Re: [ANN] Lua 5.3.0 (work2) now available

[William Ahern <william@...>]

On Tue, Apr 01, 2014 at 09:25:28AM -0300, Roberto Ierusalimschy wrote:
> > On Solaris flockfile and friends aren't visible by default. [...]
> 
> Do you know a reliable environment variable that can be used to detect
> Solaris and friends?
> 

I've found this documentation project immensely useful for platform
detection using the CPP environment

	http://sourceforge.net/p/predef/wiki/Home/

Scroll down to the middle of the following page for information on
Solaris OS detection

	http://sourceforge.net/p/predef/wiki/OperatingSystems/ 

(tl;dr check for sun or __sun)

and here for detection of Solaris Studio

	http://sourceforge.net/p/predef/wiki/Compilers/

(tl;dr check for __SUNPRO_C)

I use this shell script from my GNU Makefile to detect the compiler

  #!/bin/sh
  set -e
  : ${CC:=cc}
  ${CC} -E - <<-EOF | awk '/sunpro/||/clang/||/gcc/||/other/{ print $1; exit; }'
    #if defined __SUNPRO_C
    sunpro
    #elif defined __clang__
    clang
    #elif defined __GNUC__
    gcc
    #else
    other
    #endif
  EOF

And of course `uname -s` will give the operating system.