My purpose is to get some procedure review, clarifications  and comments, and possibly also submit a few updates to build scripts for unbundled builds with system ffmpeg. My system is current openSUSE Tumbleweed-Slowroll with FFMpeg-8 installed from Packman community reposistory. 

My understanding is that this should be a single-user build, dynamic linked and that the following two scripts are actual:
Cingg Manual reference: 1.3 How to Build CINELERRA-GG from Developer's Git Repository 
https://download.cinelerra-gg.org/files/CinelerraGG_Manual/How_Build_CINELERRA_GG_from.html


1) Installation

df -h /home3
/dev/nvme0n1p5   49G  9.7G   37G  21% /home3

cd /home3

# zypper in git

# zypper in git


# git clone https://git.cinelerra-gg.org/goodguy/cinelerra.git

Cloning into 'cinelerra'...
remote: Enumerating objects: 23232, done.
remote: Counting objects: 100% (23232/23232), done.
remote: Compressing objects: 100% (14860/14860), done.
remote: Total 23232 (delta 11986), reused 17387 (delta 7999), pack-reused 0
Receiving objects: 100% (23232/23232), 452.29 MiB | 26.58 MiB/s, done.
Resolving deltas: 100% (11986/11986), done.


df -h /home3
Filesystem      Size  Used Avail Use% Mounted on
/dev/nvme0n1p5   49G   11G   36G  23% /home3



2) bld_prepare.sh

# cd /home3/cinelerra/cinelerra-5.1/

# blds/bld_prepare.sh
usage: blds/bld_prepare.sh <os>
  <os> = [centos | suse | ubuntu | ubuntu24 | fedora | mint | debian | arch | debian-older | ubuntu-older]
unknown os:

# cat blds/bld_prepare.sh | grep suse
  echo "  <os> = [centos | suse | ubuntu | ubuntu24 | fedora | mint | debian | arch | debian-older | ubuntu-older]"
"suse" | "leap" | "tumbleweed")


3) I'll suggest to update the above "suse" entry line by adding "slowroll":
"suse" | "leap" | "tumbleweed" | "slowroll")


4)
# blds/bld_prepare.sh suse
Loading repository data...
Reading installed packages...
'patch' is already installed.
No update candidate for 'patch-2.8-2.1.x86_64'. The highest available version is already installed.
'xorg-x11-fonts-core' is already installed.
No update candidate for 'xorg-x11-fonts-core-7.6-48.1.noarch'. The highest available version is already installed.
'gcc' is already installed.
No update candidate for 'gcc-15-3.1.x86_64'. The highest available version is already installed.
'cmake' is already installed.
No update candidate for 'cmake-4.2.3-1.1.x86_64'. The highest available version is already installed.
'gcc-c++' is already installed.
No update candidate for 'gcc-c++-15-3.1.x86_64'. The highest available version is already installed.
'git' is already installed.
No update candidate for 'git-2.52.0-1.2.x86_64'. The highest available version is already installed.
'dejavu-fonts' is already installed.
No update candidate for 'dejavu-fonts-2.37-2.1.noarch'. The highest available version is already installed.
'rpm-build' is already installed.
No update candidate for 'rpm-build-4.20.1-6.1.x86_64'. The highest available version is already installed.
'xorg-x11-fonts' is already installed.
No update candidate for 'xorg-x11-fonts-7.6-48.1.noarch'. The highest available version is already installed.
'ctags' is already installed.
No update candidate for 'ctags-5.8-15.1.x86_64'. The highest available version is already installed.
'python' not found in package names. Trying capabilities.

No provider of 'python' found.
'udftools' is already installed.
No update candidate for 'udftools-2.3-1.18.x86_64'. The highest available version is already installed.

'ilmbase-devel' not found in package names. Trying capabilities.
'lzma-devel' not found in package names. Trying capabilities.
'freetype-devel' not found in package names. Trying capabilities.

blds/bld_prepare.sh: line 79: [: missing `]'


5) I'm not sure the script "blds/bld_prepare.sh suse" was working due the last line error.
How and where to fix it?


6) Updating the bld_prepare.sh package list (Tumbleweed/Slowroll):

fftw3-devel 
I add-installed it manually

# zypper in fftw3-devel

The following 2 NEW packages are going to be installed:
  fftw3-devel libfftw3_threads3

python:
A lot of python3 packages already installedFinnes mange python3 pakker installert


ilmbase:
 In newer versions of OpenEXR (which absorbed ilmbase), the library is often bundled within the OpenEXR-devel or libOpenEXR packages, rather than being a separate "ilmbase" package in some repositories. 
 
# zypper in openexr openexr-devel openexr-doc
The following 13 NEW packages are going to be installed:
  Imath-devel libdeflate-devel libjpeg62 libjpeg62-devel libOpenEXRUtil-3_4-33 libOpenEXRUtil-3_4-33-x86-64-v3
  libstdc++-devel libz-ng-compat1 openexr openexr-devel openexr-doc openjph-devel zlib-ng-compat-devel


lzma-devel:

# zypper in lzma-sdk-devel

The following 3 NEW packages are going to be installed:
  liblzmasdk25 liblzmasdk25-x86-64-v3 lzma-sdk-devel

In openSUSE Tumbleweed, the development files for LZMA/XZ compression (equivalent to
lzma-devel on other distributions) are contained in the xz-devel package. 

# zypper in xz-devel


freetype-devel:
In openSUSE Tumbleweed, the development package for FreeType is named
freetype2-devel

# zypper in freetype2 freetype2-devel

The following 3 NEW packages are going to be installed:
  freetype2-devel libbrotli-devel libbz2-devel

---------

7) HWhw-Accel vpl, vulkan, vaapi


When hwaccel methods already are enabled in my system ffmpeg-8, are these devel packages is neccessary to build hw-accel support for unbundled Cingg?

ffmpeg -hide_banner -hwaccels
Hardware acceleration methods:
But I added the following

zypper in libvpl-devel vulkan-devel vulkan-headers vulkan-loader libva-devel libva-gl-devel 

The following recommended package was automatically selected:
  libva-gl-devel

The following 31 NEW packages are going to be installed:
  libdrm-devel libdrm_nouveau2 libdrm_radeon1 libffi-devel libglvnd-devel libpciaccess-devel libva-devel libva-gl-devel libvpl-devel libX11-devel libXau-devel libxcb-damage0 libxcb-dbe0
  libxcb-devel libxcb-dpms0 libxcb-dri2-0 libxcb-record0 libxcb-screensaver0 libxcb-xf86dri0 libxcb-xtest0 libxcb-xvmc0 libXext-devel libXfixes-devel libXrandr-devel libXrender-devel
  Mesa-KHR-devel Mesa-libGL-devel vulkan-devel vulkan-headers wayland-devel xorgproto-devel

--------------

8) Build procedure further from here?

Where does the bld_dynamic.sh script fit in?

./configure --with-single-user --disable-static-build --without-thirdparty

(there are some typos in the manual: "confgure" instead of "configure" pdf page 12, 13. 653)

setting CFLAGS?