Fix basename and ln for bsd compat. (#793)

* use posix

* openbsd has no ln -v...

* openbsd does not support ln -v

install.sh

@@ -19,11 +19,11 @@ install() {
 link_version() {
     local base="${1}"
     local version="${2}"
-    (cd "${base}" && rm -f current && ln -sfv "${version}" current) || die
-    (cd "${base}" && rm -f bin && ln -sfv current/bin bin) || die
-    (cd "${base}" && rm -f lib && ln -sfv current/lib lib) || die
-    (cd "${base}" && rm -f include && ln -sfv current/include include) || die
-    (cd "${base}" && rm -f share && ln -sfv current/share share) || die
+    (cd "${base}" && rm -f current && ln -sf "${version}" current) || die
+    (cd "${base}" && rm -f bin && ln -sf current/bin bin) || die
+    (cd "${base}" && rm -f lib && ln -sf current/lib lib) || die
+    (cd "${base}" && rm -f include && ln -sf current/include include) || die
+    (cd "${base}" && rm -f share && ln -sf current/share share) || die
 }
 
 if [ -e build-env.sh ]; then

src/build.sh

@@ -224,8 +224,8 @@ build_tools () {
   feedback_low "Building gerbil tools"
   (cd tools && ./build.ss)
   for tool in tools/gx*.ss; do
-      toolname=$(basename -s .ss $tool)
-      (cd "${GERBIL_BUILD_PREFIX}/bin" && ln -svf gerbil $toolname)
+      toolname=$(basename $tool .ss)
+      (cd "${GERBIL_BUILD_PREFIX}/bin" && ln -sf gerbil $toolname)
   done
 }