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--- howtos:how_to_compile_modflow_6_on_slackware [2024-08-20 07:31 am] – created hcho
+++ howtos:how_to_compile_modflow_6_on_slackware [2025-04-10 01:06 pm] (current) – hcho
@@ Line 1: / Line 1: @@
 ====== How to compile MODFLOW 6 on Slackware ======
+[[https://github.com/MODFLOW-USGS/modflow6|MODFLOW 6]] is parallelized using [[https://www.mpi-forum.org/|the Message Passing Interface]] (MPI) and [[https://petsc.org/|the Portable, Extensible Toolkit for Scientific Computation]] (PETSc). This HOWTO explains how to compile these dependencies and MODFLOW 6 on Slackware.
 <code bash>
-sbopkg -i openmpi # install OpenMPI
+# switch to root
+su -
+# install openmpi and python3-numpy; petsc requires python3-numpy and OpenBLAS;
+# build queuefiles, not packages, to automatically build any other dependencies
+sbopkg -k -i "openmpi python3-numpy OpenBLAS"
+# download and unzip a petsc build script
+cd /tmp
+wget https://clawiki.isnew.info/_media/howtos/petsc.zip
+unzip petsc.zip
+cd petsc
+# build petsc
+./petsc.SlackBuild
+# install petsc
+cd ..
+rm -rf petsc
+installpkg petsc-*.tgz
+# switch to non-root
+exit
+# clone github repositories
+mkdir -p ~/usr/local/src
+cd ~/usr/local/src
+git clone https://github.com/MODFLOW-USGS/modflow6.git
+git clone https://github.com/fortran-lang/test-drive.git
+# build test-drive
+cd test-drive
+meson setup builddir --prefix=$PWD --libdir=lib
+meson install -C builddir
+mkdir -p ~/usr/local/share/pkgconfig
+cp -a builddir/meson-private/test-drive.pc ~/usr/local/share/pkgconfig
+if ! echo $PKG_CONFIG_PATH | grep -q $HOME/usr/local/share/pkgconfig; then
+  echo 'export PKG_CONFIG_PATH="$HOME/usr/local/share/pkgconfig:$PKG_CONFIG_PATH"' > ~/.bash_profile
+  . ~/.bash_profile
+fi
+cd ..
+# build modflow6
+cd modflow6
+meson setup builddir -Ddebug=false -Dparallel=true --prefix=$(pwd) --libdir=bin
+meson install -C builddir
+meson test --verbose --no-rebuild -C builddir
+# install modflow6
+mkdir ~/usr/local/bin
+cp -a bin/mf6 ~/usr/local/bin
+if ! echo $PATH | grep -q $HOME/usr/local/bin; then
+  echo 'export PATH="$HOME/usr/local/bin:$PATH"' > ~/.bash_profile
+  . ~/.bash_profile
+fi
 </code>