Building on Haiku (OS)

[victroniko]

Hello there!

I'm on a quest for building and making rtl-sdr work on Haiku, AFAIK no one had tried it before. After fiddling a bit I've built and ran it (more or less) succesfully with autotool, from the original OSMOCOM repos. Sadly it doesn't build at all with cmake.

This fork looks really interesting and I want to port this one to Haiku, instead of the original... but it also fails to build with cmake, with the exact same error:

...
[ 75%] Linking C executable rtl_test
/boot/system/develop/tools/bin/../lib/gcc/x86_64-unknown-haiku/11.2.0/../../../../x86_64-unknown-haiku/bin/ld: cannot find -lrt
collect2: error: ld returned 1 exit status
src/CMakeFiles/rtl_test.dir/build.make:99: recipe for target 'src/rtl_test' failed

With autotool, the script checks if function clock_gettime is available and fails gracefully when it's not, which allows the build to continue. OTOH, cmake forces the -lrt flag always, and bails out when it finds librt (which provides clock_gettime) isn't available.

Thing is, in Haiku librt does not exist. clock_gettime equivalent functionality resides in libroot (/system/lib/libroot.so)

Is it possible to add a provision for checking the target platform, and if it's Haiku then use libroot instead of librt? Maybe it's trivial but I fear it's a bit out of my coding knowledge, as I looked and fiddled w/many files (ie. CMakeLists.txt) with no success.

Here's a pic of rtl_test running on Haiku, to demonstrate a working build:

[Mr-Precise]

I have never used this OS
I will try to install haiku os soon and I'll try to fix it

[Mr-Precise]

Build fixed.
Can you check the build from devel branch (before I push this change to main)?
git clone https://github.com/Mr-Precise/rtl-sdr/ -b devel

[Mr-Precise]

ohh
I have the same problem on Windows
bind ip broken in rtl_tcp afrer add IPv6 support

...although it works fine on Linux & macOS

[Mr-Precise]

I created haiku branch based on main-win + CMake fix
Or will have to use haiku branch or full remove IPv6 support from rtl_tcp and use old code c1aed9f

[victroniko]

I can confirm haiku branch builds and works ok on Haiku x86_64.

Note that it fails at make install step: seems paths are hardcoded to install to /boot/system and this won't do, as Haiku sys-dirs are read only. (Packages are built in a simulated environment, and ideally scripts should use syscalls to find the various dirs like bin, lib etc.) However, this step isn't necessary because I'm using haikuporter to make a ready-to-use binary package. I can use the tool abstractions for the various install paths, like this:

re: IPv6, at least for Haiku target I think it can be safely ignored/disabled for now.

[Mr-Precise]

I think I completely fixed the problem with binding to IP/IPv6 in Windows & Haiku OS.
All changes moved to main.

Install path - In the process of testing. I will try to fix it

[Mr-Precise]

I still don't understand how to install without creating a package
google knows little about cmake on haiku
cmake .. -DCMAKE_INSTALL_PREFIX=/system/non-packaged works... what

[victroniko]

I asked Haiku devs, they say cmake scripts should follow GnuInstallDirs setup. This improves portability, and your fork will build not only on Haiku but also every OS that follows GNU standard install dirs.

edit. full dev answer here with tips on how to do a local install (which is more for testing, really not needed for packaging).

[Begasus]

Is there a way to disable the build/install for the static library? (couldn't find an option with cmake -L)

[Mr-Precise]

@Begasus
I probably implemented what you wanted.
Use -DINSTALL_STATIC_LIB=NO
To do this, it is better to use a feature request.

[Begasus]

Thanks! That worked out ok :) didn't want to step in before @victroniko made a PR for this, already commented on the forum thread reported earlier here to fix the install paths. Can't check this in other OS's but I think it should be ok (if you got some time to look into that).

[victroniko]

@Begasus I'll be a bit low on time next week, if you want/can do a PR then please go ahead, no worries :)

@Mr-Precise ATM dev branch builds ok (inside haikuporter) with this:
cmake -DCMAKE_BUILD_TYPE=Release -DINSTALL_STATIC_LIB=NO -Bbuild $cmakeDirArgs

$cmakeDirArgs is just something we use for building w/haikuporter, don't worry about it.

edit. If dev branch builds OK on other platforms too, then we're all set.

[Begasus]

@victroniko main branch builds fine here, posted a reply in the forum with the recipe I tested just a few minutes ago :)