I'm compiling an SML source file with reference to IntBinarySet using MLton. The code runs well using SML/NJ, however, when compiled using MLton, it complains Undefined structure IntBinarySet. Do I need to import the smlnj-lib somehow? (I can use IntBinarySet directly in SML/NJ without use-ing or importing anything)
To be specific, my source file intset.sml is as follows.
fun newSet () = IntBinarySet.empty
and MLton complains:
Error: intset.sml 1.17.
Undefined structure IntBinarySet.
compilation aborted: parseAndElaborate reported errors
MLton has a good page about smlnj-lib in MLton.
From your limited information, I assume that you are not importing smlnj-lib in your .mlb file?
ORD_SET is part of the utility library. Thus your problem should be fixed, having a reference to:
$(SML_LIB)/smlnj-lib/Util/smlnj-lib.mlb
Related
I'm trying to port the lhslib library (written in C++) to WebAssembly using emscripten (emcc v. 1.40.1, clang v. 12.0.0, macOS 10.15.5). Unfortunately I have a very limited understanding of C++, so please bear with me.
So far, I forked the repo, created a build folder, and from there started to try and convert the randomLHS.cpp file to WASM:
// a short overview of what the file looks like
#include "LHSCommonDefines.h"
#include "utilityLHS.h"
namespace lhslib
{
void randomLHS(int n, int k, bclib::matrix<int> & result, bclib::CRandom<double> & oRandom)
{
// further contents of the file
}
}
Running
emcc ../src/lhslib/randomLHS.cpp -I../src/bclib -o randomLHS.html
creates the expected files randomLHS.wasm ,randomLHS.js, and randomLHS.html.
However, when serving the html file and inspecting the Module object created by emscripten, it does not contain the desired randomLHS function.
I then read about the EXPORTED_FUNCTIONS option and proceeded to try the following
emcc ../src/lhslib/randomLHS.cpp -I../src/bclib -o randomLHS.html -s EXPORTED_FUNCTIONS='["_randomLHS"]' -s EXPORTED_RUNTIME_METHODS='["ccall", "cwrap"]'
This results in the following error:
emcc: error: undefined exported function: "_randomLHS" [-Wundefined] [-Werror]
Unfortunately I couldn't find any examples showcasing how to export a namespace (as in the randomLHS file), or how to specify a function from the namespace that should be exported.
Could you guide me on how I could achieve this?
Thanks for you help!
So according to the emscripten docs on using ccall and cwrap:
These methods can be used with compiled C functions — name-mangled C++ functions won’t work.
I believe there are other ways to do this; check out WebIDL Binder and Embind.
I'm trying to run the example "Scale_Space_Surface_Reconstruction_3" from CGAL library on CodeBlocks IDE on Ubuntu platform, as it would be nice
to have the IDE support for code completion and a more automatic configuration process.
I managed to successfully execute it by compiling it with cmake on the terminal window.
However, on CodeBlocks, after creating a new project and copying the code from the example, I get the following error:
/usr/local/include/CGAL/Scale_Space_Reconstruction_3/Scale_Space_Surface_Reconstruction_Impl_3.h:165:23: error: variable or field 'pca' declared void
Approximation pca( _nn[i]);
By looking inside the code, I found out that this is due to an undefined Macro CGAL_EIGEN3_ENABLED. As my experiment shows, if I define the macro at
pre-processing time, I do not get the same error. That is because, by defining the macro, the type definition Default::Get< wA,void>::type, becomes
Default::Get< wA, Weighted_PCA_approximation_3<Gt>>::type, and the compiler does not complain any more.
Unfortunately, as a deserved prize for messing with things I do not really understand, I get a segmentation fault at runtime.
How should I change the compiler options of codeBlocks to make the compilation succeed, and the executable run successfully?
I have the following include paths:
/usr/local/lib/CGAL/ /usr/local/include /usr/include /usr/include/eigen3.
I also included the following libraries:
libCGAL.so, libCGAL_Core.so, libCGAL_ImageIO.so, libgmp.so, libmpfr.so, libtbb.so, libtbbmalloc.so, libtbbmalloc_proxy.so
I hava built vtk6.3 with qt5.5 on ubuntu 64bit,and I open an example with qtcreator.Build it,then link error occur:
Generic Warning: In /VTK/Rendering/Core/vtkRenderWindow.cxx, line 40
Error: no override found for 'vtkRenderWindow'.
The line 40 with doc:
//Use the vtkAbstractObjectFactoryNewMacro to allow the object factory overrides.
vtkAbstractObjectFactoryNewMacro(vtkRenderWindow)
I google for this problem,almost all explanation is about this link,it seems I must add this macro in my cpp file to enable the factory methord:
include <vtkAutoInit.h>
VTK_MODULE_INIT(vtkRenderingWindow)
But I got another error:
error: undefined reference to `vtkRenderingWindow_AutoInit_Construct()'
error: undefined reference to `vtkRenderingWindow_AutoInit_Destruct()'
I can't find any built library define these symbols,google it and I got almost nothing.I am new to vtk,can anyone give some help?
Use VTK_MODULE_INIT(vtkRenderingOpenGL) instead of VTK_MODULE_INIT(vtkRenderingWindow). It works for me.
this is an old thread, but just in case...
If you are not using cmake with your VTK project you may run into the link "error: undefined reference to".
How can you find out the right library out of the (v6.1: 377) vtk libraries available, when the documentation gives no hint?
Solution: in headers there usually is an EXPORT macro like this:
class VTKCOMMONDATAMODEL_EXPORT vtkCellArray
this gives a hint for the library: in this case libvtkCommonDataModel
In regardto the problem with
undefined reference to `vtkRenderingOpenGL2_AutoInit_Construct()'
I had used the macro
#include <vtkAutoInit.h>
VTK_MODULE_INIT(vtkRenderingOpenGL2)
Solution: on my system there is only a libvtkRenderingOpenGL. So change the VTK_MODULE_INIT line and add linker option -lvtkRenderingOpenGL to the command.
I am wrapping a small c++ program in R by using Rcpp, and I checked beforehand that the c++ code is compiling directly with g++ 4.8.4 without warnings or errors. There are no external librairies, only STL is used.
When I compile my package in RStudio with devtools, I obtain the following error:
Updating PerseusR documentation
Loading PerseusR
Error in dyn.load(dllfile) :
unable to load shared object '/home/leonid/Documents/Programmation/PerseusR project/PerseusR/src/PerseusR.so':
/home/leonid/Documents/Programmation/PerseusR project/PerseusR/src/PerseusR.so: undefined symbol: _Z9lexicoPoslllRSt6vectorIlSaIlEE
Calls: suppressPackageStartupMessages ... -> load_all -> load_dll -> library.dynam2 -> dyn.load
Execution halted
Exited with status 1.
It seems that the compilation is fine and there is a problem with the loading of some dynamic libraries.
In the undefined symbol, lexicoPos is the name of a function in the c++ code.
Any ideas on how to solve this problem?
If your home-grown attempt fails, I suggest you start with a created example: Call Rcpp.package.skeleton() and compare all the files it creates with what you have.
Maybe you forgot the required line in NAMESPACE, maybe it is something -- we cannot tell from the information you supplied.
First some background - I have three VS2010 C++/OpenCL projects that compile and run fine on Windows 7 64-bit. I've been trying to compile and run each of them on Linux 64-bit (Ubuntu/Debian). The first two are compiling and running on linux and don't really use any external libraries. The third uses only Boost 1.50.0 and isn't compiling using the same method as the first two. So first let me go through what I did to get the first two to work.
I extracted only the source from the myriad of folders.
I ported windows specific code to linux specific code.
I wrote a bash script to generate the g++ command with all sources to compile them.
I ran the compile script to generate an output target file.
The bash script is as follows.
#!/bin/bash
SOURCE=""
for i in `ls *.h *.cpp *.hpp`; do
SOURCE+="${i} "
done
COMMAND="g++ -I/home/junkie/downloads/boost_1_51_0 -o out ${SOURCE} -L/opt/AMDAPP/lib/x86_64/ -I/opt/AMDAPP/include -lOpenCL -fpermissive"
echo -e "\n"
echo -e "${COMMAND}"
echo -e "\n"
$COMMAND
exit $?
And it generates and runs a command similar to following.
g++ -I/home/junkie/downloads/boost_1_51_0 -o out blah.cpp blah.h foo.hpp baz.cpp etc.cpp -L/opt/AMDAPP/lib/x86_64/ -I/opt/AMDAPP/include -lOpenCL -fpermissive
I compile using the following command.
./compile.sh &> log; echo $?; grep -ci error log; wc -l log
Now you may be wondering why I've adopted such unconventional and redundant means of getting a C++ project to compile and run on linux. Well because I'm new to the linux c and c++ toolchain and this was the quickest and simplest route I could figure out to get the job done and it did get the first two projects up and running. However, the third uses boost and this method isn't working and I need your help in figuring out what all these strange errors are.
The errors I'm getting are not actually from the project code but instead from Boost and AMD's opencl libraries code which is strange because the other projects were using opencl too and those worked fine.
Some examples of boost errors are below.
foo.hpp:2331:1: error: unterminated argument list invoking macro "BOOST_PP_CAT_I"
In file included from main.cpp:4:
foo2.hpp:1610:1: error: unterminated argument list invoking macro "BOOST_PP_CAT_I"
/home/junkie/downloads/boost_1_51_0/boost/preprocessor/cat.hpp:22: error: variable or field ‘BOOST_PP_CAT_I’ declared void /home/junkie/downloads/boost_1_51_0/boost/preprocessor/cat.hpp: At global scope:
/home/junkie/downloads/boost_1_51_0/boost/preprocessor/cat.hpp:22: error: variable or field ‘BOOST_PP_CAT_I’ declared void
/home/junkie/downloads/boost_1_51_0/boost/preprocessor/cat.hpp:22: error: expected ‘;’ at end of input
/home/junkie/downloads/boost_1_51_0/boost/preprocessor/cat.hpp:22: error: expected ‘;’ at end of input
/home/junkie/downloads/boost_1_51_0/boost/preprocessor/cat.hpp:22: error: expected ‘}’ at end of input
/home/junkie/downloads/boost_1_51_0/boost/preprocessor/cat.hpp:22: error: expected unqualified-id at end of input
/home/junkie/downloads/boost_1_51_0/boost/preprocessor/cat.hpp:22: error: expected ‘}’ at end of input
/home/junkie/downloads/boost_1_51_0/boost/preprocessor/cat.hpp:22: error: expected ‘}’ at end of input
foo.hpp:2331:1: error: unterminated argument list invoking macro "BOOST_PP_CAT_I"
Some examples of opencl errors are below.
In file included from /opt/AMDAPP/include/CL/cl_platform.h:35,
from /opt/AMDAPP/include/CL/cl.h:30,
from bar.h:7,
from fooGPU.hpp:6,
from main.cpp:4:
/usr/include/stdint.h:49: error: expected ‘;’ before ‘typedef’
In file included from /opt/AMDAPP/include/CL/cl.h:30,
from bar.h:7,
from fooGPU.hpp:6,
from main.cpp:4:
/opt/AMDAPP/include/CL/cl_platform.h:41: error: expected unqualified-id before string constant
main.cpp:136: error: expected ‘}’ at end of input
main.cpp:136: error: expected unqualified-id at end of input
main.cpp:136: error: expected ‘}’ at end of input
main.cpp:136: error: expected ‘}’ at end of input
The boost includes I'm Using are as follows.
#include <boost/preprocessor/punctuation/paren.hpp>
#include <boost/preprocessor/punctuation/comma.hpp>
#include <boost/static_assert.hpp>
#include <boost/type_traits/is_same.hpp>
#include <boost/type_traits/is_base_of.hpp>
#include <boost/mpl/not.hpp>
#include <boost/mpl/int.hpp>
#include <boost/mpl/logical.hpp>
#include <boost/mpl/eval_if.hpp>
#include <boost/mpl/identity.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/array.hpp>
So, finally, my questions are as follows.
1) What is the root cause of these errors in light of the building method I'm using and how do I resolve this problem? Does order of files or library inclusion matter? I'm using a local source download of boost as part of my g++ command as instructed by boost documentation rather than prebuilt binaries as I'm not using anything that requires prebuilt binaries.
2) I realise that my way of building things is pretty primitive. I'm learning make and I've seen some recommendations to use cmake and kdevelop which I need to look into. The primary problem with using make is that these projects weren't written with make in mind so I'm not aware of the dependency graph between source files to create the makefile (if I'm thinking correctly; I'm still fairly new to it). If you have any recommendations of how to do things better please do enlighten me.
Thanks.
I finally managed to overcome this problem and here I provide a brief account of how. To be clear I don't know what the root cause of the original problem was. In other words - I don't know why the problem occurred. All I'm saying is that my workaround allowed me to resolve the issue and move onto other problems (compile time errors).
Essentially, to reiterate, the problem was that for whatever reason a project using boost wasn't compiling on Linux because all instances of the use of the BOOST_PP_CAT() function produced the following error.
error: unterminated argument list invoking macro "BOOST_PP_CAT_I"
For whatever reason the compiler wasn't able to correctly process the use of this function but was able to process the use of other boost functions such as BOOST_PP_LPAREN(), BOOST_PP_RPAREN() and BOOST_PP_COMMA. The problem looked almost certainly related to the preprocessing stage where the combined use of the aforementioned boost functions was resulting in an unterminated argument list.
To elaborate on the nature of the relevant code (which was not written by me thankfully) the prior developers had essentially used boost preprocessor functions to create a DSL that they could then re-use multiple times to generate a list of functions. It would have seemed a lot easier to me to simply write the functions directly but anyway that's another concern.
My work around was to change the relevant section of code so that it didn't use any BOOST_PP_CAT() functions but ultimately defined the exact same functions as before. I did this by substituting the use of BOOST_PP_CAT() with the code that was being generated by it. This overcame all instances of the error quoted above but left me with hundreds of other compile time errors in my efforts to migrate this project from windows to linux.
Although this was a very specific and unusual question with an equally specific and unusual answer I wanted to feed this back to dispel the mystery behind this problem. As to why this particular function was failing to preprocess/compile on linux but passing on Windows I don't know but would very much like to know. I can only assume it is a fundamental difference in the way VC++ performs preprocessing as opposed to g++ and clang or more specifically perhaps a difference in the order of resolution of nested functions in preprocessor directives. Who knows. Anyway, thanks for your help guys.
The unterminated argument list invoking macro error suggests a lacking closing parenthesis. Use your editor's parenthesis matcher to check it. Be sure that your source files are in Unix format, not in DOS format (e.g. with \n à la Unix, not with\r\n à la MSDOS, at each end-of-line). Use dos2unix if needed.
Otherwise, don't forget that you can run g++ -Wall -C -E -H -I/home/junkie/downloads/boost_1_51_0 yoursourcecode.cc to get the preprocessed form of yoursourcecode.cc, and, by redirecting that command, you can inspect that preprocessed form with the editor of your choice (like emacs).
As I commented, learn to use Gnu make (and if in trouble debugging your Makefile, which you should edit with a good editor like emacs, use remake -x to debug it).
And the -I/home/junkie/downloads/boost_1_51_0 looks very suspicious: even if Boost is often a header only library, it has, as far as I remember, an installation procedure on Unix (and Linux distributions often package Boost libs). You should install your Boost libraries as documented (and after having configured them), and likewise for OpenCL.