[GHC] #8783: make ghc-pwd-bindist script /bin/sh compatible for Solaris

[GHC]

#8783: make ghc-pwd-bindist script /bin/sh compatible for Solaris
-------------------------------------+-------------------------------------
        Reporter:  maeder            |            Owner:
            Type:  bug               |           Status:  patch
        Priority:  normal            |        Milestone:  7.8.1
       Component:  libraries         |          Version:  7.8.1-rc2
  (other)                            |         Keywords:
      Resolution:                    |     Architecture:  Unknown/Multiple
Operating System:  Solaris           |       Difficulty:  Easy (less than 1
 Type of failure:  Building GHC      |  hour)
  failed                             |       Blocked By:
       Test Case:                    |  Related Tickets:
        Blocking:                    |
-------------------------------------+-------------------------------------

Comment (by maeder):

 I've looked into these two ./configure scripts. Calling

 {{{
 /bin/bash ./configure
 }}}

 is different from calling a script containing

 {{{
 #!/bin/bash
 ./configure
 }}}

 The former just interprets the contents of ./configure (ignoring the
 initial #!/bin/sh). Whereas the latter, like any direct call of
 ./configure on any shell, properly executes ./configure (which requests to
 be interpreted by /bin/sh).

 The toggling between /bin/bash and /bin/sh by ./configure seems to be
 normal behavior. Maybe by chance it does not happen (due to multiple
 invocations of itself) for the second internal call:

 {{{
 eval /bin/bash .././configure "--srcdir=.." "--enable-builddir=i386
 -unknown-solaris2"
 }}}

 So, it rather looks like an autoconf problem although "autoreconf"
 actually generates "eval $SHELL ..." (with a different message "....exec
 $SHELL").

 I have (GNU Autoconf) 2.69.

 I could post a report to gmp-bugs at gmplib.org, though, as "/bin/bash
 ./configure" fails later on in mpn with "../libtool: bad substitution"
 also for the latest version gmp-6.0.0a.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8783#comment:37>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler