[Ipopt] Error during Ipopt compilation using Cygwin

[Brian Macdonald]

Hello all

I am having difficulty attempting to compile Ipopt using the Cygwin
interface. I am following the steps as listed in the documentation. The
Ipopt code (Ipopt 3.12) was acquired by svn, and I am using the HSL linear
solvers.

Running ../configure works fine, but using the make command resulted in the
following error:

rm -fr  .libs/libipopt.lax
rm -fr .libs/libipopt.lax
mkdir .libs/libipopt.lax
rm -fr .libs/libipopt.lax/libLinearSolverLoader.a
mkdir .libs/libipopt.lax/libLinearSolverLoader.a
(cd .libs/libipopt.lax/libLinearSolverLoader.a && ar x
/usr/bin/coinIpopt/build/Ipopt/src/Interfaces/../c
ontrib/LinearSolverLoader/.libs/libLinearSolverLoader.a)
libtool: link: ERROR: object name conflicts:
.libs/libipopt.lax/libLinearSolverLoader.a//usr/bin/coinIpop
t/build/Ipopt/src/Interfaces/../contrib/LinearSolverLoader/.libs/libLinearSolverLoader.a
make[2]: *** [Makefile:480: libipopt.la] Error 1
make[2]: Leaving directory '/usr/bin/coinIpopt/build/Ipopt/src/Interfaces'
make[1]: *** [Makefile:679: all-recursive] Error 1
make[1]: Leaving directory '/usr/bin/coinIpopt/build/Ipopt'
make: *** [Makefile:323: all-recursive] Error 1

Looking at previous threads, I found one that suggested using
--disable-linear-solver-loader with configure to get around this error.
When I do that and then attempt to use make again, I am getting the
following error:

rm -fr  .libs/libipopt.lax
rm -fr .libs/libipopt.lax
mkdir .libs/libipopt.lax
rm -fr .libs/libipopt.lax/libcgpenalty.a
mkdir .libs/libipopt.lax/libcgpenalty.a
(cd .libs/libipopt.lax/libcgpenalty.a && ar x
/usr/bin/coinIpopt/build/Ipopt/src/Interfaces/../contrib/CGPenalty/.libs/libcgpenalty.a)
libtool: link: ERROR: object name conflicts:
.libs/libipopt.lax/libcgpenalty.a//usr/bin/coinIpopt/build/Ipopt/src/Interfaces/../contrib/CGPenalty/.libs/libcgpenalty.a
make[2]: *** [Makefile:480: libipopt.la] Error 1
make[2]: Leaving directory '/usr/bin/coinIpopt/build/Ipopt/src/Interfaces'
make[1]: *** [Makefile:679: all-recursive] Error 1
make[1]: Leaving directory '/usr/bin/coinIpopt/build/Ipopt'
make: *** [Makefile:323: all-recursive] Error 1

I have tried starting from scratch, but I keep getting the same errors. Any
help with this is greatly appreciated.

Brian Macdonald
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