go4-under-rh7.md

+# instructions for RH7 (deprecated)
+
+## Setup (w/ root 6.26)
+
+- Download and unpack the go4 distribution:
+
+https://web-docs.gsi.de/~go4/download/go4-6.2.0.tar.gz
+
+- Create a `build` folder and `cd` to it.
+
+```bash
+module use unstable # for Qt and hdf5_serial
+module load Qt gcc/10.3.0 root/6.26.02 hdf5_serial/1.10.7 cmake/3.20.5 gsl/2.7
+```
+
+- To get `HDF5_ROOT` env var considered, change policy CMP0074 to NEW:
+
+```bash
+cmake -DCMAKE_POLICY_DEFAULT_CMP0074=NEW -Dhdf5=ON ../go4-6.2.0/
+make -j
+```
+
+- Once you reach an error regarding libtiff:
+
+```bash
+cp /afs/psi.ch/sys/psi.x86_64_slp6/Compiler/root/6.24.06/gcc/10.3.0/lib/libtiff* ./lib/
+make -j
+```
+
+
+## Setup (w/ root 6.24)
+
+- Download and unpack the go4 distribution:
+
+https://web-docs.gsi.de/~go4/download/go4-6.2.0.tar.gz
+
+- Create a `build` folder and `cd` to it.
+
+- Load dependencies via pmodules:
+
+```bash
+module use unstable # for Qt
+module load Qt gcc/10.3.0 root/6.24.06 hdf5_serial/1.10.7 cmake/3.20.5
+```
+
+- To get `HDF5_ROOT` env var considered, change policy CMP0074 to NEW:
+
+```bash
+cmake -DCMAKE_POLICY_DEFAULT_CMP0074=NEW -Dhdf5=ON ../go4-6.2.0/
+make -j
+```
+
+- Once you reach an error regarding libtiff:
+
+```bash
+cd qt4 && $(cat CMakeFiles/go4.dir/link.txt) -ltiff && cd ..
+make -j
+```
+
+
+### Just for debugging
+
+The ignored `HDF5_ROOT` can also be solved by editing `go4-6.2.0/CMakeLists.txt`. Add:
+
+```
+ 14 cmake_minimum_required(VERSION 3.9 FATAL_ERROR)
+ 15 cmake_policy(VERSION 3.12)
+```
+
+In case, `HDF5_ROOT` is not defined:
+
+```bash
+HDF5_ROOT=$HDF5_PREFIX cmake -Dhdf5=ON ../go4-6.2.0/
+```
+
+---
+
+Further details regarding the libtiff error:
+
+```bash
+VERBOSE=1 make -j
+```
+
+Last line misses `-ltiff`. Find last line, `cd` into right folder (`qt4`) and run line again adding `-ltiff` at the end.
+
+---
+
+In case we need the parallel hdf5 lib:
+
+```bash
+module load Qt gcc/10.3.0 openmpi/4.0.5 root/6.24.06 hdf5/1.10.7 cmake/3.20.5
+```
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