I realize that I can create my own env variables. I just think that Cygwin should provide them so that programmers writing software can rely on the variable name and value. If there is no consistent value when Cygwin is installed then dozens of tools that work on other bash solutions for Windows can't be made to work on Cygwin.
-----Original Message----- From: Cygwin <cygwin-bounces+cygwin=prettywhack....@cygwin.com> On Behalf Of Brian Inglis Sent: Tuesday, February 8, 2022 6:46 PM To: cygwin@cygwin.com Subject: Re: CygwinPaltform Identification On 2022-02-08 15:01, julie77...@gmail.com wrote: > Cygwin doesn't create an environment variable in bash to indicate that > the platform is Cygwin under Windows. > This causes compatibility problems when running various tools. Most of > my issues have been with Python tools running Windows Python. > I have been addressing this issue by grepping PATH for cygdrive which > doesn't seem like a very good approach. > Both msys2 and mingw solve this issue by setting the MSYSTEM > environment variable which lets tools check that OS=Windows_NT and > MSYSTEM=MSYS Please add some way of identifying that programs are running under Cygwin. I have been switching env/OS/arch/triple dependent profile and rc files and sections for years with: 64 $ echo $OSTYPE $OS $HOSTTYPE $MACHTYPE cygwin Windows_NT x86_64 x86_64-unknown-cygwin 32 $ echo $OSTYPE $OS $HOSTTYPE $MACHTYPE cygwin Windows_NT i686 i686-pc-cygwin Please note that *only* $OS is exported by default (in the above list), so you will have to explicitly export (in profiles) any other shell variables you wish to be available to shell subprocesses. -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada This email may be disturbing to some readers as it contains too much technical detail. Reader discretion is advised. [Data in binary units and prefixes, physical quantities in SI.] -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
