With WITH_SUBVERSION_VER=18 in make.conf

===>   portshaker-1.0.10_2 depends on executable: svn - not found
===>   Installing existing package /packages/All/subversion18-1.8.15_3.txz
[pkg.home.wright.org] Installing subversion18-1.8.15_3...
[pkg.home.wright.org] `-- Installing expat-2.1.0_3...
[pkg.home.wright.org] `-- Extracting expat-2.1.0_3: .......... done
[pkg.home.wright.org] `-- Installing serf-1.3.8_1...
[pkg.home.wright.org] |   `-- Installing apr-1.5.2.1.5.4...
[pkg.home.wright.org] |   | `-- Installing gdbm-1.11_2...
[pkg.home.wright.org] |   |   `-- Installing indexinfo-0.2.4...
[pkg.home.wright.org] |   |   `-- Extracting indexinfo-0.2.4: .... done
[pkg.home.wright.org] |   |   `-- Installing gettext-runtime-0.19.6...
[pkg.home.wright.org] |   |   `-- Extracting gettext-runtime-0.19.6: .......... done
[pkg.home.wright.org] |   | `-- Extracting gdbm-1.11_2: .......... done
[pkg.home.wright.org] |   | `-- Installing mysql56-client-5.6.27...
[pkg.home.wright.org] |   |   `-- Installing libedit-3.1.20150325_1...
[pkg.home.wright.org] |   |   `-- Extracting libedit-3.1.20150325_1: .......... done
[pkg.home.wright.org] |   | `-- Extracting mysql56-client-5.6.27: .......... done
[pkg.home.wright.org] |   | `-- Installing db5-5.3.28_3...
[pkg.home.wright.org] |   | `-- Extracting db5-5.3.28_3: .......... done
[pkg.home.wright.org] |   `-- Extracting apr-1.5.2.1.5.4: .......... done
[pkg.home.wright.org] `-- Extracting serf-1.3.8_1: .......... done
[pkg.home.wright.org] `-- Installing sqlite3-3.9.2...
[pkg.home.wright.org] `-- Extracting sqlite3-3.9.2: .......... done
[pkg.home.wright.org] Extracting subversion18-1.8.15_3: .......... done


Without WITH_SUBVERSION_VER=18 in make.conf

===>   portshaker-1.0.10_2 depends on executable: svn - not found
===>   Installing existing package /packages/All/subversion-1.9.3_1.txz
[pkg.home.wright.org] Installing subversion-1.9.3_1...
[pkg.home.wright.org] `-- Installing expat-2.1.0_3...
[pkg.home.wright.org] `-- Extracting expat-2.1.0_3: .......... done
[pkg.home.wright.org] `-- Installing gettext-runtime-0.19.6...
[pkg.home.wright.org] |   `-- Installing indexinfo-0.2.4...
[pkg.home.wright.org] |   `-- Extracting indexinfo-0.2.4: .... done
[pkg.home.wright.org] `-- Extracting gettext-runtime-0.19.6: .......... done
[pkg.home.wright.org] `-- Installing db5-5.3.28_3...
[pkg.home.wright.org] `-- Extracting db5-5.3.28_3: .......... done
[pkg.home.wright.org] `-- Installing apr-1.5.2.1.5.4...
[pkg.home.wright.org] |   `-- Installing gdbm-1.11_2...
[pkg.home.wright.org] |   `-- Extracting gdbm-1.11_2: .......... done
[pkg.home.wright.org] |   `-- Installing mysql56-client-5.6.27...
[pkg.home.wright.org] |   | `-- Installing libedit-3.1.20150325_1...
[pkg.home.wright.org] |   | `-- Extracting libedit-3.1.20150325_1: .......... done
[pkg.home.wright.org] |   `-- Extracting mysql56-client-5.6.27: .......... done
[pkg.home.wright.org] `-- Extracting apr-1.5.2.1.5.4: .......... done
[pkg.home.wright.org] `-- Installing serf-1.3.8_1...
[pkg.home.wright.org] `-- Extracting serf-1.3.8_1: .......... done
[pkg.home.wright.org] `-- Installing sqlite3-3.9.2...
[pkg.home.wright.org] `-- Extracting sqlite3-3.9.2: .......... done
[pkg.home.wright.org] Extracting subversion-1.9.3_1: .......... done