[Ipopt-tickets] [Ipopt] #158: cygwin: windows.h present but cannot be compiled

[Ipopt]

#158: cygwin: windows.h present but cannot be compiled
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Reporter:  bradbell  |       Owner:  ipopt-team
    Type:  defect    |      Status:  new       
Priority:  normal    |   Component:  Ipopt     
 Version:  3.9       |    Severity:  normal    
Keywords:            |  
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 While testing a use of Ipopt
       http://www.coin-or.org/download/source/Ipopt/Ipopt-3.9.2.tgz
 under cygwin,
       $ uname
       CYGWIN_NT-5.1
 I got the following messages
       windows.h: present but cannot be compiled
       ... snip ...
       Report this to http://projects.coin-or.org/Ipopt/newticket
 Note the surrounding text below:

 ../../Ipopt/configure: line 1831: test: !=: unary operator expected
 configure: WARNING: windows.h: present but cannot be compiled
 configure: WARNING: windows.h:     check for missing prerequisite headers?
 configure: WARNING: windows.h: see the Autoconf documentation
 configure: WARNING: windows.h:     section "Present But Cannot Be
 Compiled"
 configure: WARNING: windows.h: proceeding with the preprocessor's result
 configure: WARNING: windows.h: in the future, the compiler will take
 precedence
 configure: WARNING:     ##
 -----------------------------------------------------
 ----- ##
 configure: WARNING:     ## Report this to http://projects.coin-
 or.org/Ipopt/newt
 icket ##
 configure: WARNING:     ##
 -----------------------------------------------------
 ----- ##

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Ticket URL: <https://projects.coin-or.org/Ipopt/ticket/158>
Ipopt <http://projects.coin-or.org/Ipopt>
Interior-point optimizer for nonlinear programs.