Hi I want to build levmar (Levenberg Marquardt) C++ library on Mac. It comes with a makefile (http://users.ics.forth.gr/~lourakis/levmar/index.html) but I have some questions about how to use it on Mac (Yosemite)
(1) The gcc I have currently installed on Mac is in fact clang. I can confirm this if I run gcc -v on the terminal. Should I install proper gcc before building levmar?
(2) Levmar recommends using LAPACK (Linear Algebra Library). Again, I have been reading on another stack overflow post (Trying to build the LEVMAR math library on a mac using the Accelerate Framework) that they were using Mac OS Accelerate framework that comes with LAPACK. Does anyone know how do I get that on yosemite? Or should I be building LAPACK standalone on mac first?
Thank you
I used the Makefile from Trying to build the LEVMAR math library on a mac using the Accelerate Framework posted by Janos and it works for levmar-2.6 using clang and Accelerate framework.
Related
I have 16" M1 Pro MacBook Pro. The third party C library (.a) was built with Intel Mac and there's absolutely no way to modify the code or rebuild with M1 Mac. The binary is x64 binary.
My project is using C++ and Objective-C++ (.mm) with Xcode. It is targeted for Mac app and not iOS. I want to link the C library to my project.
The linked library 'libkfunc64.a' is missing one or more architectures
required by this target: arm64.
I checked similar question but it didn't work:
Can Xcode on m1 Mac build targeting Intel
What I want to do is to generate an Intel binary. I don't need a M1 binary or hybrid binary - I can run Intel binary on Rosetta 2 on M1 Mac.
I created a console-app with "-arch x86_64" option for LLVM C++ compiler and it worked. But I don't know how to pass that option on Xcode.
Please tell me how to do it. I am using Xcode 13.3.
Xcode - Targets - Build Settings
Architectures （x86_64） or Excluded Architectures(arm64).
I've only tested the opposite.
Arm64 required, no x86_64.
I am building a Qt application using Windows and MinGW64. I need to use Boost Stacktrace to generate stack traces like the Linux build of the application already does.
The corresponding switch BOOST_STACKTRACE_USE_BACKTRACE (as described in https://www.boost.org/doc/libs/1_65_1/doc/html/stacktrace/configuration_and_build.html) is set and everything works fine on Linux.
However on Windows the libbacktrace library is missing. The above boost page contains two links to the sources of libbacktrace but I couldn't find a prebuilt binary for Windows/MinGW nor could I find any build instructions or usage documentation for my environment.
How can I use BOOST_STACKTRACE_USE_BACKTRACE with Windows/MinGW64?
I solved this problem (and some more issues) by switching to MSYS2 UCRT. MSYS2 provides a precompiled libbacktrace package.
I majorly work in Java but I have to switch to C++ for development for one project.
I done my research and find that in order to do portable code in C++, I need to use Boost or QT libraries etc. Therefore, now I download CodeBlock IDE in Ubuntu but afraid how to start building project. I search alot in the web to how to use Boost with CodeBlock but each time I only find it working/configure with Windows. http://wiki.codeblocks.org/index.php?title=BoostWindowsQuickRef
Can please guide me regarding how to configure Boost library with CodeBlock in Ubuntu so that I can write Portable code.
Please also let me know if I am wrong in direction to write portable code which must be support in both Linux and Windows environment.
Have a look at http://www.boost.org/doc/libs/1_52_0/more/getting_started/unix-variants.html
If you dont't need the latest version of boost you should install boost on ubuntu using
apt-get install libboost*
I've been googling and trying for days now, trying to figure out how to get 32-bit OpenCV working on OS X Lion, but can just find 64-bit version.
So i have the following questions:
OpenCV libraries come in 32-bit or 64-bit arch, is that correct?
How do I get 32-bit OpenCV working on Lion? I've trying the following ways:
- Install OpenCV via MacPorts: nope, MacPorts installs a 64-bit version.BI removed OpenCV and MacPorts.
Install OpenCV 2.4.1 via Homebrew, using the following command:
brew install opencv --build32
but looks like they are 64-bit too. Removed OpenCV and Homebrew.
Install OpenCV 2.4.1 by myself using standard unix makefiles. Nope, they still look like 64-bit.
I've written "they look like 64-bit" because i have to replace OpenC in a Xcode project made under OS X Snow Leopard, targeted for 32-bit Mac, and I always get tons of errors like:
ld: warning: ignoring file /usr/local/Cellar/opencv/2.4.1/lib/libopencv_calib3d.2.4.1.dylib, file was built for unsupported file format which is not the architecture being linked (i386)
so i suppose that the OpenCV stuff is 64-bit. If i force the project to run in 64-bit, it rubs but doesn't work properly and gets stuck.
Is there a standard way to check if my OpenCV libraries are 64-bit or 32-bit?
Where can i get 32-bit OpenCV?
Solved the problem.
Recap: it is possible to have 32-bit OpenCV libraries on 64-bit Mac OSX Lion.
How?
Step 1: Download OpenCV 2.4.0
Step 2: Download and install CMake.
Step 3: Untar the OpenCV package.
Step 4: Make a separate directory inside the OpenCV package for building
mkdir build
cd build
cmake -G "Unix Makefiles" -D CMAKE_OSX_ARCHITECTURES=i386 -D CMAKE_C_FLAGS=-m32 -D CMAKE_CXX_FLAGS=-m32 ..
(this will force the 32-bit compile)
make -j8
sudo make install
Step 5: Enjoy!
For forther reference please visit Mac OS X OpenCV Port Page
Thanks all for putting me on the right track:
#karlphilip: I tried to do as you suggested, but without the make options the compile phase fails, because the architectures are incoherent.
#hamstergene: MacPorts got stuck after the new installation, maybe I have some remains of the older install :( (strange, i followed the official instrusctions to remove it).
#Adrien: That's what I've done, but i had to merge 2 approaches :)
I ve had a hard time configuring OpenCv libraries on a number od different OSs. Turns out that the thing is auto-generating a sample project and then bulding business logic inside it.
See the installation instructions here
The web site of the OpenCV project has been significantly upgraded in the last year.
A new tutorial section is avaiable, i was able to install OpenCV on my 32-bit core Mac OS Lion.
A very cool tutorial is also available at Sadeep's Tech Blog, covering an interesting range of details.
Hope this helps!
Here's something you can try: download OpenCV 2.4 sources and edit the CMakeLists.txt in the root directory. Around line 242 you will see:
# ----------------------------------------------------------------------------
# Path for build/platform -specific headers
# ----------------------------------------------------------------------------
set(OPENCV_CONFIG_FILE_INCLUDE_DIR "${CMAKE_BINARY_DIR}/" CACHE PATH "Where to create the platform-dependant cvconfig.h")
add_definitions(-DHAVE_CVCONFIG_H)
ocv_include_directories(${OPENCV_CONFIG_FILE_INCLUDE_DIR})
below the add_definitions() call, add this one:
add_definitions(-m32)
Is there a small, free C or C++ compiler for OS X, like TCC?
Xcode is not small, or simple like TCC, AFAIK.
I'm looking for something like a GCC binary file or TCC for OS X.
gcc is the most widely used one (and Apple provides official builds of it as part of XCode). XCode is also usually distributed on your OS X cd's, though that version may be a little out of date now, depending on what version of OS X you have.
For information and samples on how to use it, look here.
Look into Fink or one of the similar projects out there if you want a build of gcc that's not linked to Xcode. That said though, Xcode is a great IDE for OS X.
You could use the Xcode Tools that are already included in OSX.
Xcode is the same professional
developer toolset used by Apple to
create Mac OS X, as well as many great
Apple applications, and Xcode is
included with every copy of Mac OS X.
You can use Code::Blocks IDE its simple slick and hav good set of feture, a plus opensurce and ready to dl for 3 major plateforms
still recoment using Xcode if u just have to make projects for MAC, but if u are going to port it to linux and windows, then my choice is Code::Blocks [Give it a try atleast]
I know you want a small compiler, but it is best to just download and install Xcode. It is a great IDE. From there, you don't have to use it if you don't want to. Once it is installed, you can use something like this in terminal:
gcc myFile.c -o myFile
And that would build a source file called myFile.c which contains C code and the output module (executable) would be myFile. You'd execute it by running:
./myFile
Update: What is your reason for not wanting Xcode? Furthermore, is GCC itself ok (disregarding Xcode for a moment)? It's important to know that GCC is not a part of Xcode. Apple made use of GCC, which is an open source C/C++ (and more) compiler.
I just can't find binaries of GCC for mac so downloading Xcode is an easy way to get some...
Update 2: It also just came to my attention that NetBeans will compile C / C++ Code. It also uses the GCC compiler. I'm not sure if it using GCC from my Xcode installation but I thought I'd mention this.
Best Regards,
Frank
There are binary packages for LLVM, both for the Clang and GCC front-ends.
PCC, the Portable C Compiler, is available for the Mac. It is small and free. Its tarball weighs in at total of 1778 KB from its 4th of July CVS Snapshot.
If you don't want to use Xcode install the macports from macports.org and if you like a graphical user interface install porticus as a managment gui for all the installed ports. In Porticus you can now easily install all different versions of gcc without Xcode.
Porticus will compile the packages for your mac and install all the needed dependencies like a Linux packet manager.