Index: configure
--- configure.orig
+++ configure
@@ -123,7 +123,9 @@ all_platforms="${all_platforms} loongarch32-linux-gcc"
 all_platforms="${all_platforms} loongarch64-linux-gcc"
 all_platforms="${all_platforms} mips32-linux-gcc"
 all_platforms="${all_platforms} mips64-linux-gcc"
+all_platforms="${all_platforms} ppc-linux-gcc"
 all_platforms="${all_platforms} ppc64le-linux-gcc"
+all_platforms="${all_platforms} sparc-linux-gcc"
 all_platforms="${all_platforms} sparc-solaris-gcc"
 all_platforms="${all_platforms} x86-android-gcc"
 all_platforms="${all_platforms} x86-darwin8-gcc"
@@ -183,7 +185,7 @@ for t in ${all_targets}; do
     [ -f "${source_path}/${t}.mk" ] && enable_feature ${t}
 done
 
-if ! diff --version >/dev/null; then
+if ! hash diff >/dev/null; then
   die "diff missing: Try installing diffutils via your package manager."
 fi
 
@@ -198,19 +200,6 @@ if [ "`cd \"${source_path}\" && pwd`" != "`pwd`" ]; th
   fi
 fi
 
-# check installed doxygen version
-doxy_version=$(doxygen --version 2>/dev/null)
-doxy_major=${doxy_version%%.*}
-if [ ${doxy_major:-0} -ge 1 ]; then
-    doxy_version=${doxy_version#*.}
-    doxy_minor=${doxy_version%%.*}
-    doxy_patch=${doxy_version##*.}
-
-    [ $doxy_major -gt 1 ] && enable_feature doxygen
-    [ $doxy_minor -gt 5 ] && enable_feature doxygen
-    [ $doxy_minor -eq 5 ] && [ $doxy_patch -ge 3 ] && enable_feature doxygen
-fi
-
 # disable codecs when their source directory does not exist
 [ -d "${source_path}/vp8" ] || disable_codec vp8
 [ -d "${source_path}/vp9" ] || disable_codec vp9
@@ -548,7 +537,7 @@ process_detect() {
         # here rather than at option parse time because the target auto-detect
         # magic happens after the command line has been parsed.
         case "${tgt_os}" in
-        linux|os2|solaris|darwin*|iphonesimulator*)
+        linux|*bsd|os2|solaris|darwin*|iphonesimulator*)
             # Supported platforms
             ;;
         *)