I have installed GTK+ 2.16 and Code::Blocks, trying to run a simple GTK+ program it gives me the following runtime error:
"The procedure entry point FT_Select_Size could not be located in the dynamic link library freetype6.dll"
I have checked the library exists, which it does, but I cannot seem to figure out how to fix this issue?
Seems like you are using Windows.
The error you've seen has to do with missing Freetype library.
Simply download it from GTK+ Windows download page:
http://www.gtk.org/download-windows.html
Go to the "Required third party dependencies" session.
Click on "Run-time" for Freetype to download.
Open the zip file, extract ./bin/freetype6.dll to %SystemRoot%\SYSTEM32 folder (i.e. C:\WINDOWS\SYSTEM32 on English Windows)
Related
I'm working on a C++ project that requires libpng. So far I've worked on Linux and everything is smooth. I installed libpng, CMAKE picks it up and everything is alright. Now move to Windows.
Here I first installed zlib (required by libpng) and libpng. When I say install, I mean I downloaded the source files, and then built them and install them using msbuild.
I noticed that by doing so, I got new folders under c:\program files (x86):
c:\program files (x86)\zlib
c:\program files (x86)\libpng
Seemed all right to me. Now when I configure my project with CMAKE zlib is picked up:
-- Found ZLIB: C:/Program Files (x86)/zlib/lib/zlib.lib (found version "1.2.13")
but there's no way CMAKE finds the PNG library:
Could NOT find PNG (missing: PNG_LIBRARY PNG_PNG_INCLUDE_DIR)
Now I tried to have a look at the FindPNG and I noticed this line:
find_path(PNG_PNG_INCLUDE_DIR png.h PATH_SUFFIXES include/libpng)
Does this mean that CMAKE expects the file png.h to be in a directory ending in include/libpng? If so, then it will never find it because in my case png.h is placed in libpng/include. But this is also the "official" installation from the source code just downloaded from http://www.libpng.org/pub/png/libpng.html.
So now I am superconfused. How things are supposed to work in Windows? Should I "create" a folder structure with the correct files for every library so that CMAKE is happy? In a way I hoped things in Windows were similar to what happens in Linux: libraries go in a standard folder, they are detected by CMAKE.. everything is ok. But apparently this is not the case. So my question in general is: how do you ship a package like this to a Windows user so that he can builds it without having to go through all this?
Thanks so much
Fabrizio
This would be the right one to use:
find_package(PNG)
You can tell CMake to look in the location where you installed it by adding the libpng base install location to CMAKE_PREFIX_PATH. Without this, CMake doesn't know where you put it.
cmake "-DCMAKE_PREFIX_PATH=C:/Program Files (x86)/libpng" ...
Note that FindPNG first looks for zlib and will fail if zlib could not be found.
I am attempting to set up GTK3 for development on Windows 10 following the instructions on tarnyko.net
using the 64bit 3.6.4 bundle from here. The test program currently builds without errors, using the generated options. When I run the program a dialog appears displaying the error message:
Procedure entry point deflateSetHeader could not be located in the
synamic link library C:\Gtk\bin\libgio-2.0.0.dll
From what I can tell so far, deflateSetHeader is a function in zlib that was not present in older versions - a possible cause for the error. Looking in the header file of zlib that came with Gtk, it lists the function.
I have copies of zlib1 in my Gtk bin dir and MinGW (GCC v7.2.0) bin dir.
I tried swapping the versions between directories, but no joy. Don't have much else in my environment path variable, except for a vanilla Python 3.6 install. Don't have zlib1 in SysWOW64. I tried adding -lzlib1 to my gcc compiler options, but that didn't seem to make a difference. I'm running out of ideas now.
Anyone know what might be causing this?
Found the cause by searching my C drive for zlib and found a copy in
C:\Program Files\Intel\WiFi\bin that was causing the problem.
I am trying to install Pyqt but I am having significant issues getting all the seperate installation processes to work in sync. I have looked online but I can't find anything to help in my specific situation.
So far I have downloaded and built Sip4.16.7. I saved the file to a random location on my directory and ran the configure file, it then installed the module in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages and seemed to work.
I then downloaded the latest version of Qt5.2 and installed it using the installer. The files are stored in /users/MyUsername/Qt
I then installed PyQt5.4.1 and tried to run the configure file but I obviously have an older version of qmake on my system as I get an error of Error: PyQt5 requires Qt v5.0 or later. You seem to be using v4.7.4. Use the
--qmake flag to specify the correct version of qmake. This is confirmed by typing qmake -v in the terminal and I get the output of QMake version 2.01a
Using Qt version 4.7.4 in /opt/anaconda1anaconda2anaconda3/lib. I have scoured the internet and I can't work out how to tell whether I have a new qmake for the Qt5.2 or If I have to make it. And I have no idea how to get set the right Qtmake directory for the new PyQt configure file.
I apologise for the very specific and confused question but I am totally lost at the moment. As an additional question When you download the PyQt and SIP files should they be saved in specific directories relative to each other?
To follow the entire discussion for how I answered this refer to https://forum.qt.io/topic/53035/installation-problems-with-pyqt-locating-old-version-of-qmake/37
There were 2 main problems:
1) The --qmake=/Users/MyUsername/Qt/5.4/ios/bin/qmake was directed to the iOS qmake which requires a subscription to apple developers program. using the --verbose option returned Check dependencies
Code Sign error: No code signing identities found: No valid signing identities (i.e. certificate and private key pair) matching the team ID “(null)” were found.
CodeSign error: code signing is required for product type 'Application' in SDK 'iOS 8.1'
The solution to this was to refer qmake to the clang-64 version to allow development on OS X not iOS.
2) I had saved the PyQt directory in my google drive and therefore there was a space in the file name. Therefore when I referred to the qmake in the clang-64 directory I got the error of ```clang: error: no such file or directory: Drive/Personal/Code/PyQT/PyQt-gpl-5.4.1 (when using --verbose) So I had to move the PyQT file to outside my google drive and rerun, and it worked fine.
I'd like to build application using Gstreamer 1.0 and GTK+-3.0 on Windows 8 (64bit).
I have sucessfully install and build GTK+-3.0, 32 bit version using Dev-C++ and Mingw 32-bit (there is no 64 bit version of GTK+). Everything works perferkt. It also installed pkg-config, I addeded it in %PATH% and it works.
I have installed gstreamer-1.0-devel-x86-1.4.4.msi and gstreamer-1.0-x86-1.4.4.msi from here
1) First problem: it installed itself into I:\gstreamer\ without asking me. I am very unhappy about it, I'd like have it on C:. But its not the biggest problem.
2) pkg-config do not know about gstreamer. I have found in I:\gstreamer\1.0\x86\lib\pkgconfig\ *.pc files, so I looked into gstreamer-1.0.pc and added to my projekt this options:
C compiler:
-I"I:/gstreamer/1.0/x86/include/gstreamer-1.0/"
Linker:
-L"I:/gstreamer/1.0/x86/lib" -lgstreamer-1.0
3) Now the program was compiled, but when I run it, it was not able to find gstreamer-1.0-0.dll. So i tried copy I:\gstreamer\1.0\x86\bin\gstreamer-1.0-0.dll into to the same directory as is my compiled file. Then it was not able to find libwinptread-1.dll. So I copied it also.
Then te program run, but it faild with some error like "cannot find entry point to windows thread ..." (I do not remember it exactly). So I copied ALL dll files from I:\gstreamer\1.0\x86\bin\ and then finally the program run.
But now it is not able to create elements:
source = gst_element_factory_make ("videotestsrc", "source");
//source is null
So, my question is, how to install gstreamer, that my program will find all dll files and will be able to create elements?
installing -- choose "custom install", there you can change the installation path.
for vs you can use *.props (gstreamer\1.0\x86\share\vs\2010\libs)
you need set Environment variable - GST_PLUGIN_SYSTEM_PATH_1_0 to plug-ins. For more details see http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gst-running.html
I am very new to Mac.
I downloaded QT SDK Mac Open source (http://get.qt.nokia.com/qtsdk/qt-sdk-mac-opensource-2010.02.dmg) and installed the Package.
I can run qmake, build samples and run demos,
but I cannot run configure (in order to build the Qt libraries statically).
It says: -bash: No such file or directory.
Documentation says I should run this in the "Qt root folder", but what is this folder in Mac?
I looked for it in /usr/bin, /usr/local/Qt4.6, /Developer/Tools/Qt.
Anyway, what is "configure" on Mac. is it an executable or a script?
Thanks a lot
The SDK download is a pre-built binary library. You need to download the source code version of Qt to be able to configure it to build as static libraries.
The configure script only comes with the source code download version.
I think the SDK only provides the headers and libraries hence the reason you can build applications using Qt. To build Qt itself you will need the source package which is a different download.