Including NSIS script in CMake - cmake

Is it possible to include an NSIS script from CMake that uses CPack together with NSIS? It appears that I'm limited to only a few commands (doc), but some commands suggest that there is a way to include the whole NSIS script, particulary:
CPACK_NSIS_EXTRA_PREINSTALL_COMMANDS,
CPACK_NSIS_EXTRA_INSTALL_COMMANDS,
CPACK_NSIS_EXTRA_UNINSTALL_COMMANDS
However, when I try to call these commands:
SET(CPACK_NSIS_EXTRA_PREINSTALL_COMMANDS "!include extra_preinstall.nsh")
Nothing happens. (Excluding /NONFATAL throws an error, so presumably the script cannot be found.)
Checking basic functionality:
SET(CPACK_NSIS_EXTRA_PREINSTALL_COMMANDS "MessageBox MB_OK \\\"Hello world!\\\"")
Doesn't do anything with the installer.
Why doesn't a Hello World button appear? Why is the script file not found (even though I put it on every level of CMake hiearchy)?

Preinstall doesn't mean that it's executed before the install section, so you actually have to click "install", then the command is executed.
The same goes for Install and Uninstall.
As for including external scripts: including with absolute path solves everything. If absolute path is not available, it can be easily obtained using CMake tools.

Related

Using CMake to generate multiple Code Composer build configurations

My goal is to use a script/CMake to create a "Debug" build configuration and a "Release" build configuration that can be switched between within Code Composer Studio's UI (using the "Build Configuration -> Set Active..." option).
Currently,
A script is ran that runs CMake with desired commands (toolchain, etc). A Code Composer Studio project is generated (as described in CMakeLists.txt)
CCS project is imported into CCS
The problem is this only generates a "Debug" build configuration. Is it possible to add a command to CMakeLists.txt, or to cmake command line, or even ccs command line that allows multiple build configurations to be generated?
The only difference between the two will basically be defining NDEBUG, and possibly changing optimization level.
I had this same question...then realized I am the one who originally asked this ~4 years ago! Anyways, I found a way to do this:
Using Code Composer, create the build configuration(s) as you want them to behave. When done, copy the .cproject file to a cproject.in "template". CMake will use this template to generate an identical .cproject for any future cmake builds. Make sure to replace any hardcoded values (ex: project name) with proper cmake variables.
For me, my CMakeLists.txt called configure_file(path/to/cproject.in ${CMAKE_SOURCE_DIR}/.cproject #ONLY).
Also be sure to delete your CMakeCache and CMakeFiles if they already exist...I believe those were preventing me from seeing the resulting change.

Is it possible to execute a command as a super user while using cmake?

I'm working on a project that uses the proxygen library by facebook.
The latter builds itself by means of a script called deps.sh which uses to invoke apt-get as a super user.
I've successfully created a custom target with cmake using the add_custom_target directive, but it fails because of the above call with the error sudo: no tty present and no askpass program specified and it makes sense, of course.
Anyway I've not been able to find a way of executing that script, thus invoking a command as a super user, using the add_custom_target.
I can safely install the library and write a FindProxygen module for my colleagues, so that the build process remains coherent, but I'd like to know if there is a clean solution to the problem of launching a command as root from cmake and thus put the library as a submodule of the project.
You can run installation script in new terminal, so sudo, executed by this script, will work as usual.
COMMAND x-terminal-emulator -e "<...>/deps.sh"
(This may be written as part of add_custom_target, add_custom_command, execute_process, etc.)
add_custom_target(
apt-downloads ALL
COMMAND sudo apt install -y ${DEPENDENCY_LIBRARIES}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
COMMENT "download required dependencies straight from apt on ubuntu"
)
Worked for me
The response is pretty simple: no.
As remarked in the comments, cmake expects to find all the required libraries already installed in the system (or at least, within the search paths) and any other solution would stop the execution and wait for user inputs.
As far as I've seen around, the usual approach, the one I've used too in the above mentioned project and in another one started immediately after, is to create a script that is in charge to download, compile and prepare the project environment, the same way proxygen itself does.
The final user will be asked to firstly executes that script, thus he will be able to proceed using cmake.
That's all, thank you for the comments.

cmake suppress finding package and set path manually

I'm currently automating my the installation process for multiple instances of an application. This application uses cmake for building and uses some libraries for which no findModule.cmake files exist. Since I'm could find a good example how to generate a findModule.cmake file for existing libraries for example OpenCascade. When setting up the buildprocess manually one can easily adapt the include and lib path in ccmake. Since I want to automate this I'm looking for a way to do this by passing the options to cmake on the command line. Here is how I try to achieve this for OpenCascade:
cmake -DOCC_FOUND:INTERNAL=TRUE -DOCC_INCLUDE_DIR:PATH=/usr/include/opencascade -DOCC_LIBRARY:FILEPATH=/usr/lib/libTKernel.so -DCMAKE_BUILD_TYPE:STRING=Release ..
Unfortunately this doesn't work. Since the option for building are build-depended, passing a previously configured CMakeCache.txt file is not working.
Thanks for any suggestions to achieve what I'm trying to do.

Too much exported symbols for a project compiled with CMake and MinGW

I'm trying to compile libzint (a barcode generator) for Windows using CMake and MinGW. The aim is to avoid Visual Studio dependencies. All run fine except that the generated .dll file contains too much exported symbols. I should have only ZBarcode_* functions but in fact pretty much anything that is declared as a variable/constant gets exported (and the resulting .dll file have no version information, I think this is strange.)
Here's how I did the job :
git clone from github repository in D:\Projects\Zint
installed cmake in C:\CMake
installed mingw in C:\MinGW
started cmake-gui, browsed to D:\Projects\Zint
clicked "Configure", choosed "MinGW Makefiles" in the list and "specify native compilers", next I specified the full path to c:\mingw\bin\mingw32-gcc.exe (to be sure...)
Clicked "Configure". It succeeded but it added some variables in red because dependencies where not met (PNG and QT but I don't want them and zint is fine without them)
clicked "Configure" again, everything turned white
clicked "Generate"
closed the cmake-gui
started a console prompt
overrode the path variable environment to C:\mingw\bin only
went to "D:\Projects\Zint" and ran "mingw32-make" then "mingw32-make install"
the libzint.dll and zint.exe were deployed to "C:\Program Files\zint-package\bin"
I used Dependency Walker to have a look at the exported functions and saw that in addition to few ZBarcode_* functions there were also around 400 other symbols and given the source code I saw that these symbols are in fact constants, arrays and other internals of libzint.
Do you know how to configure or tweak things to avoid all these exports ?
Many thanks for your help, regards.
Look in the headers for any macros that contain dllexport. If you find one or more, check that it's not malfunctioning.
Another possibility is that all classes are being exported, instead of just the few functions that are necessary.
If you have grep, do grep -nr dllexport *. This will recursively look in all files. For every hit, it will print the file name, line number, and contents of the line.

How can I execute programs in my %PATH% with MSBuild?

Note: I'm using Mercurial as an example here, because that's what I'm trying to get to work with MSBuild right now.
But the problem is not limited to Mercurial, it happens with every external program that is somewhere in my %PATH% variable (I tried the same with PowerShell, for example).
So I didn't put the Mercurial tag on this question on purpose, because this is not about Mercurial!
What I actually want to do:
I want my build script to get the current revision number from my Mercurial repository and store it in a file.
The simplest way to do this from the command line is:
hg id -i >rev.txt
Mercurial is installed on my machine and the installation folder is in my %PATH% variable.
So I can run this line from anywhere on my machine (directly from the command line, or from a batch file), and it just works.
The problem occurs when I try to run this line from my build script.
I change the BeforeBuild (or AfterBuild) section of my .csproj file as follows:
<Target Name="AfterBuild">
<Exec Command="hg id -i >rev.txt"/>
</Target>
When I compile my solution with Visual Studio, it works and the rev.txt file is created in the folder where my .csproj is.
But when I compile the exact same solution from the command line with MSBuild, the build fails with the following error message:
The command "hg id -i >rev.txt" exited with code 9009.
I googled "msbuild code 9009" and found some solutions, but all of them propose to provide the full path to the executable.
When I do this, the build succeeds with MSBuild as well.
But this is not an acceptable solution for me, because I can't be sure that everyone using my project (including the build server) has installed Mercurial in the exact same folder.
That's exactly what %PATH% is for...
The same happens when I put the <Exec Command="... line directly into the build script.
If I specify the path to the executable, it works.
If I don't specify the path, it doesn't.
Is there any trick to make MSBuild execute programs in my %PATH% variable without specifying the complete folder?
EDIT:
#leppie:
Output redirection:
You mean the fact that I save the output of my command in a text file inside the command , instead of just running hg id -i as a command and using an output parameter or something like that to get the output?
Doesn't make any difference...the error is the same when I omit >rev.txt.
Command line args:
No, it throws the same error, even if I shorten the command to just hg (without any parameters).
Don't forget: if I run the exact same Exec command in the exact same .csproj file from Visual Studio, or if I just provide the path to the .exe file in the command, everything works.
So IMO output redirection and command line args can't be the problem.
Have you tried this extension pack for mercurial/msbuild?
http://msbuildhg.codeplex.com/documentation
Seems to have a task for returning revision id, which is what your trying to achieve no?
<HgVersion LocalPath="$(MSBuildProjectDirectory)" Timeout="5000">
<Output TaskParameter="Revision" PropertyName="AssemblyRevision" />
</HgVersion>
Okay, I found the solution.
I have to admit, it was a classic case of PEBKAC :-)
I'll explain it anyway, maybe it will help someone who made the same mistake:
Basically everything I have tried (plus what James Woolfenden suggested in his answer) would have been worked...if only the batch file that I use to run the build script wouldn't have looked like this:
path="%windir%\Microsoft.net\Framework\v4.0.30319"
msbuild build.proj
Yes, exactly.
I'm editing the %PATH% variable for the duration of this batch file, and I'm overwriting it with the path to MSBuild instead of just appending it.
So when my build script tries to call Mercurial, it can't find it anymore because its location is not in the %PATH% variable anymore.
No idea why I didn't see this before.
The correct way would be to append the MSBuild path, leaving the other paths intact:
path=%path%;%windir%\Microsoft.net\Framework\v4.0.30319