depends: OpenBSD (aarch64) needs gcc (instruction) for libevent #32691
Description
Current behaviour
The current depends instructions for OpenBSD do not mention gcc, which is required to build libevent.
A simple pkg_add gcc doesn't cut it either, because that only installs egcc: https://unix.stackexchange.com/questions/554752/no-gcc-executable-after-pkg-add-gcc-on-openbsd
Expected behaviour
Explain what the user needs to do to build depends (or change depends).
A simple symlink seems to do the trick, but I'm not if it's appropriate:
ln -s /usr/local/bin/egcc /usr/local/bin/gcc
Steps to reproduce
Fresh OpenBSD installation. Clone repo on master.
gmake -C depends NO_QT=1 NO_QR=1 NO_ZMQ=1 NO_USDT=1
gmake: Entering directory '/home/sjors/src/bitcoin/depends'
Configuring libevent...
CMake Deprecation Warning at CMakeLists.txt:22 (cmake_minimum_required):
Compatibility with CMake < 3.10 will be removed from a future version of
CMake.
Update the VERSION argument <min> value. Or, use the <min>...<max> syntax
to tell CMake that the project requires at least <min> but has been updated
to work with policies introduced by <max> or earlier.
CMake Error at /usr/local/share/cmake/Modules/CMakeDetermineCCompiler.cmake:49 (message):
Could not find compiler set in environment variable CC:
gcc.
Call Stack (most recent call first):
CMakeLists.txt:47 (project)
CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
-- Configuring incomplete, errors occurred!
gmake: *** [funcs.mk:343: /home/sjors/src/bitcoin/depends/aarch64-unknown-openbsd7.7/.libevent_stamp_configured] Error 1
gmake: Leaving directory '/home/sjors/src/bitcoin/depends'
Relevant log output
No response
How did you obtain Bitcoin Core
Compiled from source
What version of Bitcoin Core are you using?
master
Operating system and version
OpenBSD 7.7
Machine specifications
VM inside UTM, host machine is M4 macOS 15.5