[Coin-ipopt] IPOPT- FORTRAN-Cygwin Configuration Problem

[Andreas Waechter]

Hi Vanesa,

The Fortran version is no longer supported, and I'm not going to make any 
bug fixes.  It seems that the behavior of gcc changed somewhat on CYGWIN, 
and he test fails.

However, here is a workaround for your problem:

After line 7173 in the configure script, insert the following line:

ac_cv_sizeof_int_p=4

(so that the one line above becomes line 7174).  With this, I was able to 
run the configure script and compile Ipopt on my Cygwin box.

I hope this helps,

Andreas

On Fri, 23 Feb 2007, vanesa lorena de la Torre wrote:

> Dear all,
> I am trying to install Ipopt-Fortran under cygwing 3.81 but I get a
> configuration error (please see below). I am not sure what I am doing
> wrong, but I will apprecite if you could kindly help me fix this problem.
> 
> Best Regards,
> 
> - Vanesa
> PS. Find attached config.log
> 
> --------------------------------------------------------------------------------
> -----------------------------------------------------
> configure:6711: checking for int *
> configure:6743: gcc -c -O3 -funroll-loops -mno-cygwin   conftest.c >&5
> configure:6749: $? = 0
> configure:6753: test -z
>     || test ! -s conftest.err
> configure:6756: $? = 0
> configure:6759: test -s conftest.o
> configure:6762: $? = 0
> configure:6773: result: yes
> configure:6776: checking size of int *
> configure:7143: gcc -o conftest.exe -O3 -funroll-loops -mno-cygwin 
> conftest.c  >&5
> configure:7146: $? = 0
> configure:7148: ./conftest.exe
> configure:7151: $? = 0
> configure:7174: result: 4
> configure:7197: error: Unknown length of int *
> 
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