After having installed LLVM, I try following the Kaleidoscope tutorial on how to build a small language.
However, trying to compile with clang++, I get several errors.
First, the IDE cannot find the include files. However, I fixed this by pointing the IDE to the include directory inside the LLVM build directory.
Next, the linker says it cannot find object files.
I am using Visual Studio 2015 and running Windows 10.
Can someone write a foolproof step-by-step guide on how to build a small app with some of the include files? This includes making clang++ aware on how to find the necessary files.
Thanks.
Related
I'm learning to use the Codeblocks editor and I would like to setup a SDL2 project. My question is about the necessary files in the SDL2 package.
In the bin directory there is:
sdl-config
In the lib directory there is:
directories -
cmake and pkgconfig
In the share directory there is:
aclocal
I deleted these files, but my experience with SDL2 and C++ is almost at a beginner level. My understanding is, that these support files are for various command line tools used for compilation. For example I know what pkg-config is and I searched somewhat for the other file types. Is it ok to delete these files since I am using Codeblocks, or will Codeblocks possibly require any of these in some unexpected way at a later time? that I might not have considered. As far as I know, Codeblocks makes full use of it's wizards and it's project handling is separate from these other tools. I basically like to set everything up as an Empty Project. I have no compilation issues or errors, but I wanted the opinion of someone more experienced on this.
I am trying to install QuantLib on my Mac running OSX 10.11.6. Installed Boost 1.59 via MacPorts and then followed these instructions.
I used these additional environment variables
./configure --with-boost-include=/opt/local/include/ \
--with-boost-lib=/opt/local/lib/ --prefix=/opt/local/ \
CXXFLAGS='-O2 -stdlib=libstdc++ -mmacosx-version-min=10.6' \
LDFLAGS='-stdlib=libstdc++ -mmacosx-version-min=10.6'
and then make && sudo make install.
However when I run the Bermuda Swaption test it gave me the same error described here.
Little premise: I don't know anything about C++. I need QuantLib to work on Python. So I read carefully the answer by SmallChess and tried to solve it by myself. As I read in his answer
You can't just compile BermudanSwaption.cpp and hope everything would be fine. You have to compile the entire QuantLib library and link with the generated library files. Please google "compiling and linking C++" for more information.
By far, the easiest way to make it happen on Mac is to do it with Xcode. You will need to create a new Xcode project, and import the entire Quantlib project files into it. Next, you will need to create a main() function. Xcode does the compiling and linking for your automatically.
This is what I exactly did:
created a new project in Xcode (version 8.2.1)(file/new project/Command Line Tool/"HelloWorld"/Documents/create)
selected Targets, Build Phases and Link Binary With Library. Added libQuantLib.0.dylib
set libstdc++(GNUC++ standard library) as C++ Standard Library in Build Settings
Modified Header Search Paths to include: /opt/local/include/, and Library Search Paths to include: /opt/local/lib
C++ Language Dialect is set on Compiler Default.
Dragged the ql folder onto the left window of the Xcode
Now, I managed to copy a simple code which includes the library and even if there are many warnings, it runs. Still when I run on the Terminal the command for the Bermuda Swaption test I get the same error. What am I doing wrong?
Additional info (may or may not be useful): if I change the C++ Standard Library setting on Xcode to libc++, I get on Xcode the same error I get when i try the Bermuda Swaption test (ld: symbol(s) not found for architecture x86_64).
Any help would be very much appreciated
Regards
EDIT: you can find a picture of the code at https://i.stack.imgur.com/1zhjO.png
im trying to port a c++ project from visual studio 2013 to netbeans on ubuntu. The target is a windows executable, so far im able to compile windows exe files from netbeans using mingw as compiler.
The project needs the Crypto++ library and i only have the .lib version for visual studio. To include the library in netbeans i first need to build the Crypto++ library in the .a format.
Its not clear to me how should i do that.
Ive found informations on how to build the library for linux with mingw but not for cross compilation with mingw. The provided GNUmakefile does not work.
Should i set up a vm with windows and mingw and compile the library that way? Or maybe use the qmake "hack" as suggested here http://www.qtcentre.org/threads/28809-Compiling-amp-using-Crypto-with-mingw-version-of-Qt ? The last good Crypto++ version suggested there is quite old. This is confusing, porting the whole project is easier than having the required library.
Im open to any suggestion.
tldr: how to build libcryptopp.a on linux for the cross compilation of a windows exe project
edit:
for example if i cross compile something there are windows libraries in the /usr/i686-w64-mingw32/lib/ folder like libuser32.a. i need to make the equivalend libcryptopp.a.. sorry if is a bit unclear.
if i simply build using the steps in answer (and in the wiki) i end up with a libcryptopp.a file but i suspect is linux-only, cause if i link that library in netbeans in the .exe file im cross compiling i end up with undefined references to cryptopp stuff everywere. the paths are correct, i suspect the library needs to be replaced with the equivalent libcryptopp.a compatible with crosscompiling.
edit2: im trying to follow the answer down here, now im stuck here. after this command to build cryptopp.
make CXX=/usr/bin/i686-w64-mingw32-gcc INCLUDES="-I /usr/i686-w64-mingw32/include" LIBS="-L /usr/i686-w64-mingw32/lib" CXXFLAGS="-std=c++0x"
and many variations of it i always end up with this error
trap.h:26:25: fatal error: Windows.h: No such file or directory
# include
which makes me think its using the right compiler to make a .a lib file for cross compiling the windows .exe with the lib.
however i dont understand whats going on now with the missing header..:(
Also if i try to link the lib file (used with visual studio) i get a lot of linking errors, undefined reference to cryptopp stuff.
ill offer a symbolic beer (a couple of $ of Bitcoins) if someone finds out how to do it.
Inspired by http://wiki.amule.org/wiki/Cross-compilation_for_windows_with_mingw:
sudo apt-get install mingw-w64
git clone https://github.com/weidai11/cryptopp
cd cryptopp
export TARGET=i686-w64-mingw32
CXX=$TARGET-g++ RANLIB=$TARGET-ranlib AR=$TARGET-ar LDLIBS=-lws2_32 make -f GNUmakefile
I've found informations on how to build the library for linux with mingw but not for cross compilation with mingw.
Its relatively easy...
Get Crypto++ ZIP into MinGW.
Unpack Crypto++ ZIP.
Change directories.
Build the library.
Verify All tests passed.
(1) and (2) can be tricky because Cygwin and MinGW are missing a lot of tools. So curl https://www.cryptopp.com/cryptopp563.zip -o cryptopp563.zip may not work.
For (2), I seem to recall ZIP is missing, so unzip -aoq cryptopp563.zip -d cryptopp-5.6.3 may not work.
At step (4), just perform make static dynamic test and be sure it finished with All tests passed.
I do a lot of testing with Cygwin and MinGW. I have a script that copies Crypto++ into the environments from my Desktop. I have not been able to figure out a way to automate it. A recent question on automating it was closed, so no one can supply an answer (see How to automate software testing for Cygwin and MinGW).
I am currently learning C++ using Lynda.com tutorials, I am a complete beginner and am following the tutorials on how to set up Eclipse on my Mac.
When I initially run the version-test.cpp program provided, it runs fine with the expected output (GCC version 4.2.1)
The tutorial requires my Mac to be running GCC version 4.7.0 or above and it explains how to upgrade GCC. The tutorial instructs me to save the updated GCC files within my home directory within the folder hpc-gcc and then follows on to explain the method to set my PATHs to find this folder.
Now when I run the version-test.cpp program it fails with the following error
dyld: Library not loaded: /usr/local/lib/libmpc.3.dylib
Referenced from: /Users/gary/hpc-gcc/bin/../libexec/gcc/x86_64-apple-darwin13.1.0/4.9.0/cc1plus
Reason: image not found
So from this message I can see that the system cannot find the required files within /usr/local/lib.
I am able to copy the files from hpc-gcc/bin to /usr/local/lib and have the program compile and run correctly but I am hoping to find out why Eclipse cannot read the required files directly from ~/hpc-gcc/bin
I have spent the last 2 hours searching forums and search engines for the answer but I am no further forward. I realise I can simply have the GCC files within /usr/local/lib and it will work but I want to understand where I am going wrong.
Solved.
You need to go into the properties of the Working folder (if you are following the lynda.com program you will understand the working folder) and under C/C++ Build -> Environment menu (Where we added in the LIBRARY_PATH, PATH, AND CPATH variables) and add in DYLD_LIBRARY_PATH with a value of ${HOME}/hpc-gcc/lib.
Remember the C/C++ Build "menus" are for build and debug, so the project is not able to find the library for the building process.
And you will be good to go.
I installed vtk in debian6.0.6 successfully, I build a static lib. I run the examples and everything is ok.
But I want to develop in codeblocks. So I created a project in codeblocks, copy the code "cone.cxx" into my project, I set the include path and linkers. But there are compile errors like "undefined reference to...", I guess that is because it can not find the interfaces in the static lib.
I guess I need some #defines before compile my project. I can see the pre_defines in visual studio2008, but I can not get it in codeblocks because the codeblocks project use its makefile defaultly. Can I get a solution if I don't want to write a makefile?