Ruby 3.3.0 install fails building psych yaml.h not found

[whitehome]

Ruby 3.3.0 installation fails on Rocky Linux 9.3 building psych.

yaml.h is not found but exists in location:

/usr/include/yaml-cpp/yaml.h

Installed yaml packages below. Unable to install yaml-dev package because it doesn't exist.

yaml-cpp.x86_64 0.6.3-5.el9 @epel
yaml-cpp-devel.x86_64 0.6.3-5.el9 @epel

Installed.

Log file shows yaml.h was not found during verification then. Fails during psych build:

configuring psych
yaml.h not found

*** Following extensions are not compiled:
psych:
Could not be configured. It will not be installed.
Check ext/psych/mkmf.log for more details.
*** Fix the problems, then remove these directories and try again if you want.
make[1]: *** [exts.mk:2422: note] Error 1
make[1]: Leaving directory '/tmp/ruby-build.20240111082130.142352.zsAdQ1/ruby-3.3.0'
make: *** [uncommon.mk:398: build-ext] Error 2
external command failed with status 2

I did manually add yaml.h to global includes and yaml.h was found but then ios was missing. Can you help me?

[whitehome]

Didn't list libyaml installation:
libyaml.x86_64 0.2.5-7.el9 @minimal

[whitehome]

Solved my issue in the follow way:

1. Disabled rbenv
2. Installed ruby-install
3. ruby-install needed libyamal-devel and gdmb-devel to continue (note id did that up front!)
4. As I already new libyaml-devel would not install on Rocky Linux 9 with dnf I finally foond the way to do it and gdmb-devel
5. https://rockylinux.pkgs.org/9/rockylinux-devel-x86_64/libyaml-devel-0.2.5-7.el9.x86_64.rpm.html
6. https://rockylinux.pkgs.org/9/rockylinux-crb-x86_64/gdbm-devel-1.19-4.el9.x86_64.rpm.html
7. Both installed using the instructions under install
8. I reenabled rbenv to test it and the install worked. so issue closed.
9. I'd say ruby-install did a better job of identifying what I needed to do as I could find the missing header but rbenv or reather the make file could not sounds like a LD_INCLUDE issue.

[shqear93]

brew info libyaml
brew list libyaml
gem install psych -- --with-libyaml-dir=/opt/homebrew/Cellar/libyaml/0.2.5

• don't forget to update the libyaml path

[sharikovvladislav]

The brew list libyaml gives me this error:

Error: No such keg: /opt/homebrew/Cellar/libyaml

[baoqchau]

In case anyone run into the error above, brew install libyaml should resolve the issue

[hwiorn]

On Rocky 9+, you have to enable CRB(=powertools on RHEL) repo. Then, you can install libyaml-devel package.

sudo dnf config-manager --set-enabled crb
sudo dnf install -y libyaml-devel

And, Build and install the Ruby 3.3.x.

[negrusti]

On Ubuntu:
apt install libyaml-dev

[alexpapworth]

You'll want apk add yaml-dev if you're using Alpine 🙂