"Source" VsDevCmd.bat from Cygwin

Question

So VsDevCmd.bat is a nifty script that sets environment variables for Visual Studio tools:

'C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\Tools\VsDevCmd.bat'

I am using Visual Studio tools cl, link, etc. from Cygwin. How can I use that script to set all the same environment variable without reinventing the script in bash?

I can run the batch script from cmd shell then launch bash, but this is unsatisfactory—I need to initiate the process of "sourcing" the batch file from within Cygwin.

Answer 1

Here's what I ended up with. This bash function will ran cmd with VcVarsAll.bat file, then will a nested bash in order to print an environment variable, which could be extracted:

# Given envar names return their newline-separated values setup for VS2015
#
# VcVarsAll.bat is a script that sets up environment variables for Visual
# Studio command-line builds:
#
#   https://msdn.microsoft.com/en-us/library/f2ccy3wt.aspx
#
query_vcvarsall() {
  local envars=$*

  (cd '/cygdrive/c/Program Files (x86)/Microsoft Visual Studio 14.0/VC' &&
   cmd /c "VcVarsAll.bat amd64 && c:/cygwin/bin/bash -c 'printenv $envars'")
}

Then set, for example, PATH:

export PATH="$(query_vcvarsall PATH)"