cannot build it with eigen about optim

[kthohr]

You need to set EIGEN_INCLUDE_PATH. I've updated the configure script to throw an error if this is not found.

[Horizon-42]

thank you, now it can compile, but throw an error:
./include/misc/matrix_ops/access.hpp:35:50: error: ‘all’ is not a member of ‘Eigen’
#define OPTIM_MATOPS_ROWS(x, v) (x)(v,Eigen::all) // v is a vector
^
./include/misc/matrix_ops/eval.hpp:30:35: note: in definition of macro ‘OPTIM_MATOPS_EVAL’
#define OPTIM_MATOPS_EVAL(x) (x).eval()
^
src/unconstrained/nm.cpp:149:44: note: in expansion of macro ‘OPTIM_MATOPS_ROWS’
simplex_points = OPTIM_MATOPS_EVAL(OPTIM_MATOPS_ROWS(simplex_points, sort_vec));
^~~~~~~~~~~~~~~~~

I use eigen3, don't know if it's ik

[kthohr]

When you ran configure what was the output under OPTIM_MATLIB_INCLUDE_PATH set to:

[Horizon-42]

OPTIM_MATLIB_INCLUDE_PATH set to:
/usr/include/eigen3

/usr/include/eigen3 is EIGEN_INCLUDE_PATH

[Horizon-42]

compile failed when it run:
g++ -std=c++11 -Wall -fPIC -O3 -march=native -ffp-contract=fast -flto -DNDEBUG -fopenmp -DOPTIM_ENABLE_EIGEN_WRAPPERS -I/usr/include/eigen3 -I./include src/unconstrained/nm.cpp -c -o src/unconstrained/nm.o

[kthohr]

Sounds like an issue with your installation of Eigen.

I just pulled the latest version of Eigen from GitLab:

https://gitlab.com/libeigen/eigen

And the library compiled without issue.

As a sanity check, you could try the following:

cd ~/Desktop
git clone https://gitlab.com/libeigen/eigen.git
export EIGEN_INCLUDE_PATH="${PWD}/eigen"

Then change back to the directory where you've pulled OptimLib and run ./configure -l eigen && make again.

[Horizon-42]

finally it build success
but when i use the lib to compile example, it throw a lot of errors, like:
/include/misc/matrix_ops/get_sort_index.hpp:22:1: error: ‘VecInt_t’ does not name a type; did you mean ‘uint_t’?
VecInt_t
I don't know what wrong?

[kthohr]

You need to include an example of what you're trying to compile, along with the compiler options.

[kthohr]

Try the same example again with

#define OPTIM_ENABLE_EIGEN_WRAPPERS
#include "optim.hpp"

[Horizon-42]

thank you, it worked.
thank you for you patient, I should read the docs first.

[kthohr]

No worries; thanks for pointing out some gaps in the build process and docs. Feel free to reopen if you encounter any other build-related errors.

[Horizon-42]

and i found a small iusse when build test
it throw error when i build test like this:

newton_logit_reg.cpp:115:67: error: ‘std::chrono’ has not been declared

I just add #include to fix it.