On Tue, Mar 21, 2023 at 11:11 PM Fred <fred.fredex at gmail.com> wrote: > that's what I thought at first, but there is no gimp-devel either > installed, or available. > > Fred > > I don't have right now a Rocky Linux 9.x system at hand, but from what I've seen, you should install the gimp-devel-tools package $ rpm -qpi ./gimp-devel-tools-2.99.8-3.el9.x86_64.rpm warning: ./gimp-devel-tools-2.99.8-3.el9.x86_64.rpm: Header V4 RSA/SHA256 Signature, key ID 350d275d: NOKEY Name : gimp-devel-tools Epoch : 2 Version : 2.99.8 Release : 3.el9 Architecture: x86_64 Install Date: (not installed) Group : Unspecified Size : 26612 License : LGPLv3+ Signature : RSA/SHA256, Mon 31 Oct 2022 10:56:19 PM CET, Key ID 702d426d350d275d Source RPM : gimp-2.99.8-3.el9.src.rpm Build Date : Mon 31 Oct 2022 10:34:33 PM CET Build Host : pb-9e56c5ea-a265-4012-a7b6-4abde563b600-b-x86-64 Packager : Rocky Linux Build System (Peridot) <releng at rockylinux.org> Vendor : Rocky Enterprise Software Foundation URL : http://www.gimp.org/ Summary : GIMP plugin and extension development tools Description : The gimp-devel-tools package contains gimptool, a helper program to build GNU Image Manipulation Program (GIMP) plug-ins and extensions. Have you already installed it? Can you try in case and then re-run the autogen.sh? HIH, Gianluca