I have a module using NativeCall that works on both Linux and macOS, but not Windows. When I try to use the module on Windows I get lots of errors like:
# Cannot locate symbol 'TinyTIFFReader_open' in native library 'tinytiff.dll'
I use cmake for my C++ dependency on all three OS's. On Linux and macOS I can just cmake ..; make; sudo make install, and on Windows I cmake -G "Visual Studio 15 2017 Win64" .. and then open the created ".sln" in Visual Studio to compile. The build succeeds with no errors on all three OS's.
Does anyone have any ideas of what I would need to do/change to also get my module working on Windows?
The full module is located here: https://github.com/ryn1x/Graphics-TinyTIFF
I think you will have to give TINYTIFFREADER_LIB_EXPORT and TINYTIFFWRITER_LIB_EXPORT defines a value (either in the source, but probably better to have it be passed by the build system) and on windows i think it has to be __declspec(dllexport), otherwise the symbols may not be made available in the dll.
I downloaded Eclipse Luna for 64-bit Mac OS X just a few days ago. Would like to use Eclipse for a small C++ program assigned as student homework. Set this up as an Eclipse C++ project.
I built the selected configuration as Debug and run it as Local C/C++ Application. All good. My C++ program runs and output appears in Console window exactly as I want it.
When I attempt Debug as Local C/C++ Application there is a message window Error with command: gdb --version. Cannot run program 'gdb': Unknown reason. So I am unable to launch my program in the Debug perspective and step-execute line by line, use breakpoints, examine variable assignments, etc.
When I attempt Profile as Local C/C++ Application, there is a message window Couldn't determine version of Valgrind. So I am unable to perform automated memory leak detection.
Do I need to complete my Eclipse installation in some additional way using Eclipse > Help > Install New Software option? Do I need to perform some additional installation(s) on my Mac that are outside of the Eclipse framework? I do not see what is missing here, as far as my software installations.
Any assistance, much appreciated..!
Properties for MyLittleProject, Tool Chain Editor
Current toolchain: MacOSX GCC
Current builder: Gnu Make Builder
Used tools
MacOS X C Linker
MacOS X C++ Linker
GCC Assembler
GCC Archiver
GCC C++ Compiler
GCC C Compiler
ABOUT ECLIPSE
Eclipse IDE for C/C++ Developers
Version: Luna Release (4.4.0)
Build id: 20140612-0600
INSTALLATION DETAILS>>INSTALLED SOFTWARE
Eclipse IDE for C/C++ Developers
EPP CPP Feature
C/C++ Autotools support
C/C++ Development Tools
C/C++ Common GDB Support
. . .
C/C++ GCC Cross Compiler Support
. . .
CDT Standalone Debugger Support
. . .
GDB Tracepoint Analysis
. . .
Valgrind Tools Integration
Profile Framework
Eclipse can find neither gdb nor valgrind on your computer. You have to install these manually. You see at INSTALLATION DETAILS>>INSTALLED SOFTWARE that the interfaces to these two programs are installed, yet the programs themselves are missing.
On Mac, you may want to use LLDB instead of gdb.
If you insist on using the two, you have to install them first. I am not familiar with MacOS, but maybe the following links prove to be usefull:
http://ntraft.com/installing-gdb-on-os-x-mavericks/
http://calvinx.com/2014/05/04/valgrind-on-mac-os-x-10-9-mavericks/
Amendment:
The valgrind plugin searches at a specific path for the binary. If it does not work, you need to add a symbolic link to the actual binary like so (from the offical documentation, note that there is a mistake which is corrected below):
ln -s $(which valgrind) /usr/bin/valgrind
I wanted to install openssl on windows 7 Home Premium 64 bit , i have downloaded the openssl package and extracted it as well in the c directory however i am not able to find something that shows how to link the openssl in Netbeans 7.1.1 . I have got MinGW(4.6.1) compiler with MSYS .
Thanks
Please read INSTALL.W32 file in OpenSSL that explains the build procedure with different development suite.
In this file you will find
GNU C (MinGW/MSYS)
It explains the procedure to build it using MinGW with MSYS.
To use it in Netbeans, you need to mention the include path of OpenSSL header files (generated during library compilation) and path of OpenSSL library. I never used Netbeans, so I do not know about it. You need to mention include and library in project settings.
I've been trying to properly add the open source dns_sd.h library provided by Apple. I am writing a program that uses the BonjourRegistrar class as demonstrated here:
link text
I've already written my program on the Mac environment and now I am trying to port it to Windows. The Bonjour SDK comes with several classes, and I am quite confused onto how to correctly add the class to my Qt project. I have tried add the line:
win32:LIBS += c:\dnsssd.lib
in the .pro file with no success. Also, I attempted to add the dns_sd.h and dns_sd.c files into my project and got a couple of errors such as:
'UINT8': does not name a type
'INT8': does not name a type
'UINT16' does not name a type
'INT16' does not name a type
Finally, I am now trying to modify the lib file as described by xcimo in this link
link text
I do not know if I am using the correct command to properly modify these files.
The .lib distributed by Apple can be used only if you are compiling the Qt application with the MSVC compiler.
Otherwise, like you said, you need a GCC-compatible library (.a). To do that you need to do the following steps:
Run the reimp tool [0] on the .lib: reimp dnssd.lib. A file DLLStub.obj will be generated.
Run the gendef tool [1] on the .dll: gendef dnssd.dll. A file dnssd.def will be generated. The .dll can be obtained from: C:\Windows\System32 if you are using the 32 bit or from C:\Windows\SysWOW64 for the 64 bit version.
Assemble the final .a: dlltool -k -d dnssd.def -l libdnssd.a.
Add the right path int the .pro file, to the newly created library: LIBS += -L"/path/to/the/library/file" -ldnssd
[0] - http://sourceforge.net/projects/mingw/files/MinGW/Extension/mingw-utils/mingw-utils-0.4-1/
[1] - http://sourceforge.net/projects/mingw/files/MinGW/Extension/gendef/gendef-1.0.1346/ - gendef is a better alternative to pexports, because it can convert the stdcall-type libraries from MSVC to the GCC ones, so you can get a proper .def file.
PS: I know the author got it working, but I felt there should be some more detailed instructions on how to get it done -- the information is scattered around the internet.
Try adding
DEFINES += _WIN32
to your project file.
I figured it out, you need to use reimp and dll tool to modify the lib library to a .a
I'm using libcurl in a Win32 C++ application.
I have the curllib.vcproj project added to my solution and set my other projects to depend on it.
How do I build it with SSL support enabled?
Well, since this post failed badly, I had to dig into the matter myself.
Also check out the other answers and comments for additional info regarding other versions etc.
EDIT: Since I posted this Q there seems to be ready-built binaries made available from the curl homepage. Check out James' answer.
So here goes:
-
Preprocessor
The following two symbols need to be fed to the preprocessor to enable SSL for libcurl:
USE_SSLEAY
USE_OPENSSL
(libcurl uses OpenSSL for SSL support)
Alternatively the symbols can be added directly to a file called setup.h in libcurl, but I'm not too happy about modifying code in 3rd party distributions unless I really have to.
Rebuilding the libcurl library, I now got some errors about OpenSSL include files not being found. Naturally, since I haven't set up the OpenSSL distribution properly yet.
Compiling OpenSSL binaries
I downloaded the OpenSSL 0.9.8 source distribution and unpacked it.
In the root of the source distribution there's a file called INSTALL.W32 which describes how to compile the OpenSSL binaries. The build chain requires perl, so I installed the latest version of ActivePerl.
I had some trouble with the build, which might not be applicable to all systems, but I'll go through it here in case somebody experiences the same.
According to INSTALL.W32:
Run the following commandline tasks with current directory set to the source distribution root:
1> perl Configure VC-WIN32 --prefix=c:/some/openssl/dir
(Where "c:/some/openssl/dir" should be replaced by the dir where OpenSSL should be installed. Don't use spaces in this path. The compilation further ahead will fail in that case)
2> ms\do_ms
For me this step was unsuccessful at first, since I lacked the environment variables OSVERSION and TARGETCPU. I set these to 5.1.2600 and x86 respectively. You may get complaint about OSVERSION being "insane", but look closer, this error is for WinCE and doesn't affect the Win32 setup. To get hold of your OS version, run the 'ver' command from a command prompt or run winver.exe.
3> nmake -f ms\nt.mak (for static library)
or
3> nmake -f ms\ntdll.mak (for DLL)
The source now compiles. Took approx 5 minutes on my laptop.
When compilation is completed, the libs or binaries have been placed in:
distroot/out32 - for static library build
or
distroot/out32dll - for DLL build
Building and linking
Now, back to visual studio and point out the libs and include path for headers. The include files are located in distroot/inc32/openssl.
Remember to add libeay32.lib and ssleay32.lib as linker input.
Rebuild the libcurl project.
Error!
Well at least for me with this version of OpenSSL.
it complained about a struct typedef in one of the OpenSSL headers. I couldn't find any info on this. After an hour of googling I broke my own principle and commented out the typedef from the OpenSSL header, and luckily libcurl wasn't using that symbol so it built fine.
Update: As pointed out by Jason, this issue seems to have dissapeared as of version 1.0.0a.
Now, for confirming that SSL support is enabled for libcurl, run the following code:
curl_version_info_data * vinfo = curl_version_info( CURLVERSION_NOW );
if( vinfo->features & CURL_VERSION_SSL )
// SSL support enabled
else
// No SSL
Simple as that.
Maybe this isn't the answer anyone is looking for, but I simply just downloaded the precompiled DLLs from this link found at http://curl.haxx.se/download.html
I ran the test that sharkin provided, and if( vinfo->features & CURL_VERSION_SSL ) proved to be true.
Following Robert Oschler's advice, here is my comment on the question as answer :
You can build recent libcurl (2012) with native SSL support for windows using the preprocessor symbols: USE_WINDOWS_SSPI and USE_SCHANNEL instead of the OpenSSL ones.
When compiling OpenSSL 1.0.0 on Windows with Visual Studio 2010, it eventually threw a 0x2 error:
NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 10.0
\VC\BIN\cl.EXE"' : return code '0x2'
Stop.
It seems that this error will be thrown because of a flag in the perl Configure file, namely -WX.
As the MSDN documentation states:
Treats all compiler warnings as errors. For a new project, it may be best to use /WX in all compilations; resolving all warnings will ensure the fewest possible hard-to-find code defects.
After removing the -WX occurrences in the Configure file and re-entering the commands stated here it built fine and passed all tests.
In my case follow the curl README file was enough.
My configuration is the following:
Visual Studio 2015 (VC14)
Static library
Win64
curl version 7.57.0
OpenSSL 1.0.2
Compilation of libCurl
Download libcurl source there: https://curl.haxx.se/download.html
Uncompress the file and go to the folder curl-7.57.0\projects
Open the README file and follow the instructions, this lead me to do the following:
Downloaded OpenSSL
Extract it and rename it to openssl, put it aside the curl folder, this is important as you'll open the VS project that expect to find openssl there.
Install Perl
Execute the utility build-openssl.bat to perform the compilation of openSSL. With my settings this became the following:
.\build-openssl.bat vc14 x64 release ..\..\openssl\
just runs .\build-openssl.bat -help to know more about the parameters.
After that you can see OpenSSL has been compiled as you got a new folder here: openssl\build\Win64
Open the Visual Studio project curl-7.57.0\projects\Windows\VC14\curl-all.sln
Be sure to set the visual studio project to the build configuration you need (LIB Release - LIB OpenSSL in my case)
Build all
The library is located at curl-7.57.0\build\Win64\VC14\LIB Release - LIB OpenSSL\libcurl.lib
Remarks
Don't forget to define the CURL_STATICLIB preprocessor in your own project
With static library, you will have to links with the dependencies of libcurl, see this answer
You might not want to depend on LDAP, in that case you can disable it by setting the preprocessor CURL_DISABLE_LDAP before you compile libcurl.
If you build with Visual Studio IDE and get 58 odd warnings as the likes of
"inconsistent dll linkage curl_global_init / curl_msnprintf /..."
you should add CURL_STATICLIB to the preproccessor definitions.
so the entire definition line should look like:
USE_SSLEAY;USE_OPENSSL;CURL_STATICLIB.
With this all the warning will disappear.
Some would ignore the warnings and go on using the libs, but then will get corresponding *error*s as the likes of curl_global_init / curl_msnprintf. It can be very annoying.
Hope it can help somebody.
\ fatal error C1083: Cannot open include
file: 'stdlib.h': No such file or directory
NMAKE: fatal error U1077::return code
That error can be solved by executing vcvarsall.bat in Visual Studio.
How to build libcurl C/C++ with OpenSSL (SSL support) on Windows
Install libcurl
Install OpenSSl
Build libcurl with OpenSSL
Installing libcurl
Go to the download page of libcurl and donwnload the ZIP file under Source Archives. In my case it is called curl-7.58.0.zip
Extract the archive and open projects/Windows/VC15/curl_all.sln with Visual Studio.
Installing OpenSSL
Download the windows binary of OpenSSL. In my case, I downloaded the windows installer file Win32 OpenSSL v1.1.0g from the Shining Light Productions distribution.
The installation folder for me is C:\OpenSSL-Win32.
Building libcurl with OpenSSL
In the curl_all.sln Visual Studio solution file, change the build configuration to DLL Debug - DLL OpenSSL.
In the Solution Explorer, right click the project curl and go to Properties.
Under Linker -> General modify Additional Library Directories and add the path to your OpenSSL directory + \lib. In my case, this is C:\OpenSSL-Win32\lib.
Apply and close the properties window.
Right click the project libcurl and do the same as the previous step, add OpenSSL directory + \lib to Additional Library Directories under Linker -> General.
Under C/C++ -> General, add C:\OpenSSL-Win32\include to the Additional Include Directories.
Finally go to Linker -> Input and modify Additional Dependencies. Replace all the lib files to the following:
ws2_32.lib
wldap32.lib
openssl.lib
libssl.lib
libcrypto.lib
Apply and close the properties window.
With the DLL Debug - DLL OpenSSL build configuration still selected, go to Build -> Build Solution.
Copy the two dll files libcrypto-1_1.dll and libssl-1_1.dll from the OpenSSL bin directory (C:\OpenSSL-Win32\bin) to the just created build directory curl-7.58.0\build\Win32\VC15\DLL Debug - DLL OpenSSL.
Validating Build
Inside the build directory, run curld.exe. If it runs with no errors (missing dll, etc.) then your build was successful.
i did "do_nt.bat" for windows 7 rc7100
don't forget "nmake -f ms\nt.mak install" to copy the headers correctly
thanks this did help a lot
Couple of notes in response to and/or in addition to the above..
First, if you don't want to mess with ActivePerl, Strawberry Perl is terrific and worked perfectly for this.
Second, in lieu of using do_ms.bat, I would recommend preferring do_masm if possible since, according to INSTALL.W32,
This is worth doing because it will
result in faster code: for example it
will typically result in a 2 times
speedup in the RSA routines.
Also, build 0.9.8l (L) of OpenSSL was a nightmare so I eventually gave up and reverted to 0.9.8k which built and linked (statically) with libcurl 1.9 without issue.