Hello I have installed wxWidget-3.1.0 s on windows it works fine using it from MSVC++. But On Linux fedora 27 I built it in a sub-directory "wxWidget3.1.0/build-gtk-unicode-release".
These are the comands:
../configure --disable-debug
make
sudo make install
sudo ldconfig
Above it generates for me a release shared library I get around building programs upon it. So I easily use "wx-config --cxxflags --libs". For Ides like Eclipse, Codeblocks, Kdevelop.
The problem is I need some "static version" of the library so I created another sub-directory: "wxWidgets-3.1.0/build-gtk-static-release-unicode" So I issued the commands:
../configure --disable-debug --disable-shared --enable-unicode
make
sudo make install
I created a project with Codeblocks and it compiles easily with adding only "wx-config --cxxflags --libs"
When it comes to Eclipse CDT I used wx-config --cxxflags for the compiler and wx-config --libs for the linker. But it fails complaining
about "Unreferenced defeinition of the APIs".
After a long search I Find a tricky workaround:
Project->Properties->C/C++->GCC C++ Linker->Experts settings:
${COMMAND} ${FLAGS} ${OUTPUT_FLAG} ${OUTPUT_PREFIX}${OUTPUT} ${INPUTS}
So I made the "Flags" at the end to become:
${COMMAND} ${OUTPUT_FLAG} ${OUTPUT_PREFIX}${OUTPUT} ${INPUTS} ${FLAGS}
And it works fine.
*** The problem:
I'd like to configure Kdevelop for wxWidgets as a static library keep in mind as a dynamic library I managed to do that. So My Configurations are:
From Kdevelop->Project->Open Configuration->CMake File->CXX_COMPILER_FLAGS I enters:
The result of wx-config --cxxflags in a terminal.
And for the linker:
CXX_LNKER_FLAGS:
The reult of wx-config --libs
But The code compiles but doesn't build I don't have "expert settings" as in Eclipse CDT.
Can anyone solve how to link to wxWidgets from Kdevelop statically?
Thank you for this boring long story. NB: I Added What problems I faced and what did to get around them to help people who face the same problems. Thank you in advance.
Related
I'm on Arch Linux, and I have a C++ SDL2 program, contained in single main.cpp file, and I compile it for Linux with such command:
g++ main.cpp -lSDL2 -lSDL2_image
Now I wanna compile it for windows. Any advice on what should I do?
I suggest my own tool, quasi-msys2, which lets you reuse the precompiled SDL2 for MinGW provided by MSYS2 (and more).
Install Clang, LLD, make, wget, tar, zstd, gpg.
git clone https://github.com/HolyBlackCat/quasi-msys2
cd quasi-msys2/
make install _gcc _SDL2 _SDL2_image
env/shell.sh
win-clang++ main.cpp `pkg-config --cflags --libs sdl2 SDL2_image`
This should produce a.exe, which you can test using wine a.exe (or just ./a.exe, after running env/shell.sh).
How to do this manually:
For completeness, SDL2 itself distributes precompiled binaries for MinGW, meaning the manual setup is not hard. Any tutorial for MinGW should work.
Install MinGW from your package manager.
Download and unpack SDL2-devel-??-mingw.zip and SDL2_image-devel-??-mingw.zip.
Specify the paths to the directories with .a files using -L... and to .h files using -I.... Add -lmingw32 -lmingw32 -mwindows -lSDL2main -lSDL2 -lSDL2_image to the linker flags.
Follow this troubleshooting guide if you get stuck.
I'd go for cmake really.. SDL2 ships with a CMakeLists.txt and it's as simple as running this from your build folder.
cmake.exe ..
cmake.exe --build .
EDIT: if you want to cross-compile, you need MinGW and the addition of the mingw flags to the cmake generator
cmake \
-D CMAKE_C_COMPILER=/path/to/wingw/gcc \
-D CMAKE_CXX_COMPILER=/path/to/mingw/g++ \
-G "MinGW Makefiles" ..
I have installed "libsdl1.2-dev" and "libvlc" (with sudo apt-get install blah) in Raspbian on my Raspberry Pi, I'm using gcc to compile the example project from https://wiki.videolan.org/LibVLC_SampleCode_SDL/
This is my compile command:
gcc -fpermissive test.cpp -lvlc -lsdl1.2-dev -o test
It seems to compile (after I added -fpermissive and manually placed the vlc headers in usr/include/vlc) the error seems to happen during the linking phase, I get these 2 errors;
/usr/bin/ld: cannot find -lvlc
/usr/bin/ld: cannot find -lsdl1.2-dev
I'm a bit new to Linux and I can't work out why it can't find them. I'm also unsure where it installs them by default, there seem to be a few different places they could be.
Use pkg-config to get the needed compile and link flags. pkg-config --cflags sdl libvlc will print the needed compilation flags, and pkg-config --libs sdl libvlc the needed link flags. You can use the $() feature of the shell to embed the output of pkg-config directly into your compile command. Also, use g++ to compile and link C++ code. gcc is for C code.
g++ $(pkg-config --cflags sdl libvlc) -fpermissive test.cpp -o test $(pkg-config --libs sdl libvlc)
The package names sdl and libvlc correspond to *.pc files that are installed in /usr/lib/pkgconfig. If no such files exist, then that means you forgot to install the -dev versions of the sdl and vlc libraries. So check if there's a libvlc-dev package you need to install. Use this:
apt-cache search vlc | grep dev
See if there's a dev package for libvlc that you need.
To install libraries and header files, try sudo apt-get install libvlc-dev this should install all the dependent libraries in the correct library paths. sudo apt-get install vlc is used to install the application which in your case you dont need.
Try sudo apt-get install vlc, you're probably missing some plugins and stuff
I use Code::Blocks IDE with wxWidgets in Debian 8.9 Jessie (x86-64).
When I use the GNU GCC Compiler everything works fine thus compiling nice wxWidgets executable for Linux.
But I need to have my program working on Windows platforms so I have to do cross-compiling.
I have installed mingw32 and followed the cross-compiling instructions given
here.
I did my wxWidgets build configuration as follows:
./configure prefix=/usr/i686-w64-mingw32 --host=i686-w64-mingw32 --enable-unicode --build=`./config.guess` --disable-shared
This is so because the MinGW compiler I have is i686-w64-mingw32, located in the folder /usr/i686-w64-mingw32, and wxWidgets version is 3.1.
My compiler set-up in Code::Blocks should be correct because I managed to do cross-compiling for simple console applications and those run properly on Windows 10.0. But when it comes to wxWidgets applications there are several problems:
The compiler gives me the error (it happens when --static is added to Other compiler options in the build options for the project):
fatal error: wx/app.h: No such file or directory|
Now since wx directory in question is in the path /usr/i686-w64-mingw32/include/wx-3.1 I added this path to the search directories for the project (the build target only for the moment). This worked fine to proceed further.
My compiler settings are: wx-config --host=i686-w64-mingw32 --static --cflags
The compiler swears again (not surprised though :-)):
fatal error: wx/setup.h: No such file or directory|
Ok I've found this one in /usr/i686-w64-mingw32/lib/wx/include/i686-w64-mingw32-msw-unicode-static-3.1, so added this path to the compiler search directories.
The linker is swearing this time (creeping on my nerves):
for the build target:
undefined reference to `wxEntry(HINSTANCE__*, HINSTANCE__*, char*, int)'|
for the release target:
undefined reference to `wxAppConsoleBase::CheckBuildOptions(char const*, char const*)'|
My linker settings are wx-config --host=i686-w64-mingw32 --static --libs
I tried hard to fix this with several different build options for the wxWidgets library but with no effect on the result. So please, someone help!
I also noticed that running ./config.guess form the wxWidgets download directory gives me x86_64-unknown-linux-gnu. Thus this mean I should use x86_64-w64-mingw32 (I have this one installed in /usr/x86_64-w64-mingw32) compiler instead i686-w64-mingw32?
So the main issue is that the command wx-config --static --cflags is not recognized in Other compiler options and wx-config --static --libs is not recognized in Other linker options.
The problem persisted even though I added the path to wx-config file in the .bashrc file from the home directory, i.e. export PATH="$PATH:/usr/i686-w64-mingw32/bin". At that time I was able to run wx-config from the terminal at any location.
To solve it I've changed the options to /usr/i686-w64-mingw32/bin/wx-config --static --cflags in Other compiler options and /usr/i686-w64-mingw32/bin/wx-config --static --libs in Other linker options. This worked as a charm.
I've added the location of libstdc++-6.dll (simply found it with a search in the file manager) in Link libraries and the flags -static and -static-libgcc in Other linker options and finally did the testing with the minimal sample as Igor suggested. Just create new console application, add minimal.cpp file to it and all of the mentioned above.
The compiler did a Minimal.exe file that I have opened successfully with wine.
Note: All the include directories I mentioned in my question were in wx-config --cflags for the compiler and wx-config --libs for the linker, so no need to add them in search directories.
I have been working on a program in SDL and I would like to send it to my friends who only run a Windows environment. I have done some reading and found that I should use mingw to cross-compile for Windows. The binary I found and compiled was x86_64-w64-mingw32-g++, however I am getting some issues getting my program to compile. Using the following command I get the following error:
/usr/bin/x86_64-w64-mingw32-g++ sapphire.cpp `pkg-config --cflags --libs sdl2` -lSDL2_image -lSDL2_mixer -lSDL2_ttf -std=c++11
fatal error: iconv.h: No such file or directory
While I realize I should make a makefile eventually, I am not going to do that now.
I tried installing iconv (Version 1.15) from here and used the following commands to compile it:
./configure --prefix=/usr/local
make
make all
My iconv.h is located in /usr/include but if I include that I get another error for missing gnu/stubs.h and if I include that then I get a myriad of errors that I'm not sure how/if I could fix seen here. Does anyone know how I could perhaps fix this? I would appreciate any help!
Thanks in advance!
You can use pkg-config with mingw in a crosscompiler environment but you should take care to where pkg-config searches for his .pc files.
I'm assuming your mingw crosscompiler is installed in /usr/x86_64-w64-mingw32, change it to the installation path where his "include" and "lib" subdirectories are.
Provided SDL windows developement package is installed in the same prefix on your computer and the installation has a correct pkg-config .pc file you can do:
export PKG_CONFIG_PATH=/usr/x86_64-w64-mingw32/lib/pkgconfig
and then try pkg-config from the command line:
pkg-config sdl2 --cflags
This should point you to some path inside /usr/x86_64-w64-mingw32, if it does your compilation will be successful.
Please note that if you want to compile a package for crosscompile (like the iconv you tried to compile) you should add to the ./configure script parameters:
--host=x86_64-w64-mingw32 --prefix=/usr/xx86_64-w64-mingw32
... and this may work or not, depending the package support the mingw32 compiler or not.
The way you compiled iconv built another linux version of it in /usr/local!
NOTE: As far as I know Ubuntu does not provide a windows package for SDL2, while other linux distro do, so you'll need to cross-compile SDL2 with the option I gave before you can compile your code. SDL2 does support cross-compilation using mingw.
Problem first, then details:
I copied a hello-world program from the wxwidgets tutorials and tried to compile it from the command line like this:
g++ -o h wxhello.cpp -I/usr/include/wx-3.0
The compile terminated quickly because it could not find "wx/setup.h". I researched this apparently EXTREMELY COMMON PROBLEM and learned that there is supposed to be a second include path, pointing to the place where the individual setup.h that suits my situation can be found. So I tried:
find /usr/include/wx-3.0 -name "setup.h"
And the output was nothing.
So I installed wxWidgets by marking libwxgtk3.0-dev in Synaptic and allowing all the dependencies to be installed (something like 40 packages in all because I just set this thing up).
How do I get my program to compile?
You need to have wx-config --cxxflags --libs in your command line enclosed in back-ticks like this
g++ -o h wxhello.cpp `wx-config --cxxflags --libs`
This is not the solution on Windows, but it should work on any Linux.
This is not documented in a searchable fashion as far as I can tell.