The confSHELL macro is used to assign a value to
the SHELL= directive in the created Makefile.
That directive determines the shell that will be used to execute each
command. The default is /bin/sh for most
systems, and /usr/bin/sh for a few. In the
extremely rare circumstance that the Bourne shell is not available in
this standard location, or if you wish to use a different shell for
building sendmail, you can redefine the shell
using this confSHELL macro. For example:
define(`confSHELL', `/usr/local/bin/sh')
Note that use of any shell other than the Bourne shell might have
unexpected results. Also note that the -E switch
to Build cannot be used to pass this value in
the environment.
