[Macos] compile issue

[grigorovich]

Cmake could not "find package" - issue was in this lines 34,35 of 'src/CMakeLists.txt'

CMake Error at src/CMakeLists.txt:34 (find_package):
By not providing "FindMaya.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Maya", but
CMake did not find one.

Could not find a package configuration file provided by "Maya" with any of
the following names:

MayaConfig.cmake
maya-config.cmake

Add the installation prefix of "Maya" to CMAKE_PREFIX_PATH or set
"Maya_DIR" to a directory containing one of the above files. If "Maya"
provides a separate development package or SDK, be sure it has been
installed.

and

CMake Error at src/CMakeLists.txt:35 (find_package):
By not providing "FindEigen3.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Eigen3", but
CMake did not find one.

Could not find a package configuration file provided by "Eigen3" with any
of the following names:

Eigen3Config.cmake
eigen3-config.cmake

Add the installation prefix of "Eigen3" to CMAKE_PREFIX_PATH or set
"Eigen3_DIR" to a directory containing one of the above files. If "Eigen3"
provides a separate development package or SDK, be sure it has been
installed.

cmake version 3.16.2.
Eigen extracted to third-party/Eigen
Maya 2020. All dev environment vars sets up - path of maya, devkitBase (Autodesk link). Examples compiles and works on 2020 (Autodesk link).

Im not pro in cmake configuration... Could you help? What need to dig?

[chadmv]

You probably need to make sure you get the submodules. The CMake modules are included with the cgcmake submodule. Did you clone or download the repo?

[grigorovich]

Thanks for hint. I clone 'cgcmake' repo to 'cgcmake' folder.

$cmake -H. -Bbuild -G "Unix Makefiles"
or
$cmake -H. -Bbuild -G Xcode
for xcode.
Output:

-- Found OpenMP_CXX: -Xclang -fopenmp (found version "3.1") 
-- Found OpenMP: TRUE (found version "3.1")  
-- Found Maya: /Users/antongrigorovich/Applications/Autodesk/maya2020/include  
-- Found Eigen3: /Users/antongrigorovich/Documents/UE/Platformer/Import/Maya_Rig/zDevelop/devkitBase/devkit/plug-ins/cmt-master2/third-party/Eigen (Required is at least version "2.91.0") 
-- Configuring done
-- Generating done

Ok.
But on compiling has another issue with types in "maya2020/include/maya/MTypes.h"
$cmake --build build
Output:

/Users/antongrigorovich/Documents/UE/Platformer/Import/Maya_Rig/zDevelop/devkitBase/devkit/plug-ins/cmt_test/third-party/Eigen/Eigen/Core:266:10: fatal error: 
      'omp.h' file not found
#include <omp.h>
         ^~~~~~~
1 error generated.
make[2]: *** [src/CMakeFiles/cmt.dir/pluginMain.cpp.o] Error 1

I no have idea what is and where is that "omp.h".

BTW.
$ brew info libomp

libomp: stable 9.0.1 (bottled)
LLVM's OpenMP runtime library
https://openmp.llvm.org/
/usr/local/Cellar/libomp/9.0.1 (9 files, 1.3MB) *
Poured from bottle on 2020-02-08 at 01:09:59
From: https://github.com/Homebrew/homebrew-core/blob/master/Formula/libomp.rb
==> Dependencies
Build: cmake ✔
==> Requirements
Required: macOS >= 10.10 ✔

[grigorovich]

So. I found next step issue with OpenMP vs maya's ThreadsUtils...
OpenMP doesn't shared in MacOS by default, and doesn't works out of the box even does installed by 'brew install libomp'. So i just force 'header' and 'dlyb' folders by flags on build configuration step:

$ cmake -H. -Bbuild -G "Unix Makefiles" -DOpenMP_CXX_FLAGS="-Xpreprocessor -fopenmp -I/usr/local/opt/libomp/include" -DOpenMP_CXX_LIB_NAMES="omp" -DOpenMP_omp_LIBRARY=/usr/local/opt/libomp/lib/libomp.dylib

and try to compile:
$ cmake --build build

Output:

[ 14%] Building CXX object src/CMakeFiles/cmt.dir/pluginMain.cpp.o
In file included from /Users/antongrigorovich/Documents/UE/Platformer/Import/Maya_Rig/zDevelop/devkitBase/devkit/plug-ins/cmt_test/src/pluginMain.cpp:3:
In file included from /Users/antongrigorovich/Documents/UE/Platformer/Import/Maya_Rig/zDevelop/devkitBase/devkit/plug-ins/cmt_test/src/demBonesCmd.h:4:
/Users/antongrigorovich/Documents/UE/Platformer/Import/Maya_Rig/zDevelop/devkitBase/devkit/plug-ins/cmt_test/src/DemBones/DemBonesExt.h:108:3: error:
'DemBones' is not a class, namespace, or enumeration
DemBones::clear();
^
/Users/antongrigorovich/Documents/UE/Platformer/Import/Maya_Rig/zDevelop/devkitBase/devkit/plug-ins/cmt_test/src/DemBones/DemBones.h:65:7: note:
'DemBones' declared here
class DemBones {
^
In file included from /Users/antongrigorovich/Documents/UE/Platformer/Import/Maya_Rig/zDevelop/devkitBase/devkit/plug-ins/cmt_test/src/pluginMain.cpp:4:
/Users/antongrigorovich/Documents/UE/Platformer/Import/Maya_Rig/zDevelop/devkitBase/devkit/plug-ins/cmt_test/src/rbfNode.h:80:3: warning: 'const' type
qualifier on return type has no effect [-Wignored-qualifiers]
const double operator()(const double& x) const { return exp(-(x * x) / (2.0 * r * r)); }
^~~~~~
/Users/antongrigorovich/Documents/UE/Platformer/Import/Maya_Rig/zDevelop/devkitBase/devkit/plug-ins/cmt_test/src/rbfNode.h:86:3: warning: 'const' type
qualifier on return type has no effect [-Wignored-qualifiers]
const double operator()(const double& x) const {
^~~~~~
/Users/antongrigorovich/Documents/UE/Platformer/Import/Maya_Rig/zDevelop/devkitBase/devkit/plug-ins/cmt_test/src/rbfNode.h:95:3: warning: 'const' type
qualifier on return type has no effect [-Wignored-qualifiers]
const double operator()(const double& x) const { return sqrt((x * x) + (r * r)); }
^~~~~~
/Users/antongrigorovich/Documents/UE/Platformer/Import/Maya_Rig/zDevelop/devkitBase/devkit/plug-ins/cmt_test/src/rbfNode.h:101:3: warning: 'const' type
qualifier on return type has no effect [-Wignored-qualifiers]
const double operator()(const double& x) const { return 1.0 / sqrt((x * x) + (r * r)); }
^~~~~~
/Users/antongrigorovich/Documents/UE/Platformer/Import/Maya_Rig/zDevelop/devkitBase/devkit/plug-ins/cmt_test/src/rbfNode.h:107:3: warning: 'const' type
qualifier on return type has no effect [-Wignored-qualifiers]
const double operator()(const double& x) const {
^~~~~~
5 warnings and 1 error generated.
make[2]: *** [src/CMakeFiles/cmt.dir/pluginMain.cpp.o] Error 1
make[1]: *** [src/CMakeFiles/cmt.dir/all] Error 2

Looks like 1 error in src/DemBones/DemBonesExt.h:108:3 by clear().

numbs questions:

1. DemBonesExt inherit something from DemBones ? // clear() is not virtual?
2. Is it ok if code in headers only?

PS: For macOS with new user's bash profile of zsh

create newone
$ touch ~/.zshrc
if absent and add these:

export MAYA_LOCATION=/Applications/Autodesk/maya2020/Maya.app/Contents
export DYLD_LIBRARY_PATH=$MAYA_LOCATION/MacOS
export DYLD_FRAMEWORK_PATH=$MAYA_LOCATION/Frameworks
export DEVKIT_LOCATION=<path to folder with devkit>/devkitBase

to ~/.zshrc

but if you have some maya vars in old bash profile just add legacy bash profile to ~/.zshrc:
source ~/.bash_profile