diff --git a/build.bash b/build.bash
index 7c278b6..41494c5 100755
with manual adjustments
--- a/build.bash
+++ b/build.bash
@@ -30,7 +30,6 @@ srcd="$(dirname $0)"
 mudir=$outd/mupdf
 muinc="-I $mudir/include -I $mudir/thirdparty/freetype/include"
 
-test -d "$mudir" || die muPDF not found, consult $(dirname $0)/BUILDING
 
 mkdir -p $outd/{$wsid,lablGL}
 :>$outd/ordered
@@ -41,12 +40,6 @@ isfresh() { test -r "$1.past" && . "$1.past" && test "$k" = "$2"; }
 mulibst="$mudir/build/$mbt/libs"
 mulibs="$mudir/build/$mbt/libmupdf.a $mudir/build/$mbt/libmupdf-third.a"
 
-keycmd="(cd $mudir && make -q build=$mbt libs && echo); digest $mulibs"
-isfresh "$mulibst" "$(eval $keycmd)" || (
-    make -C "$mudir" build=$mbt -j $mjobs libs
-    eval $keycmd >${mulibst}.past
-) && vecho "fresh mupdf"
-
 oincs() {
     local i=
     local incs1=
@@ -100,35 +93,6 @@ mflags() {
 }
 
 overs="$(ocamlc -vnum 2>/dev/null)" || overs=""
-test "$overs" = "4.11.1" || {
-    url=https://caml.inria.fr/pub/distrib/ocaml-4.11/ocaml-4.11.1.tar.xz
-    txz=$outd/$(basename $url)
-    keycmd="printf $url; digest $txz;"
-    isfresh $txz "$(eval $keycmd)" || {
-        executable_p() { command -v "$1" >/dev/null 2>&1; }
-        if executable_p wget; then dl() { wget -q "$1" -O "$2"; }
-        elif executable_p curl; then dl() { curl -L "$1" -o "$2"; }
-        else die "no program to fetch remote urls found"
-        fi
-        dl $url $txz
-        eval $keycmd >$txz.past
-    } && vecho "fresh $txz"
-    absprefix=$(cd $outd &>/dev/null; pwd -P)
-    export PATH=$absprefix/bin:$PATH
-    ocamlc=$absprefix/bin/ocamlc
-    keycmd="printf $url; digest $ocamlc;"
-    isfresh $ocamlc "$(eval $keycmd)" || (
-        tar xf $txz -C $outd
-        bn=$(basename $url)
-        cd $outd/${bn%.tar.xz}
-        ./configure --disable-ocamldoc --disable-ocamltest      \
-                    --enable-debugger=no --prefix=$absprefix
-        make -j $mjobs world
-        make install
-        eval $keycmd >$absprefix/bin/ocamlc.past
-    ) && vecho "fresh ocamlc"
-    overs=$(ocamlc -vnum 2>/dev/null)
-}
 
 ccomp=${LLPP_CC-$(ocamlc -config | grep "^c_compiler: " | \
                       { read _ c; echo $c; })}
@@ -243,7 +208,7 @@ bobjc() {
     } && vecho "fresh $o"
 }
 
-ver=$(cd $srcd && git describe --tags --dirty) || ver=unknown
+ver=@version@
 
 cmd="(. $srcd/genconfstr.sh >$outd/confstruct.ml)"
 keycmd="digest $srcd/genconfstr.sh $outd/confstruct.ml"
@@ -291,7 +256,7 @@ for m in ml_gl ml_glarray ml_raw; do
 done
 
 libs="str.cma unix.cma"
-clibs="-L$mudir/build/$mbt -lmupdf -lmupdf-third -lpthread"
+clibs="-lmupdf -lmupdf-third -lfreetype -lgumbo -ljpeg -lopenjp2 -ljbig2dec -llcms2 -lharfbuzz -lpthread -lz"
 if $darwin; then
     mcomp=$(ocamlc -config | grep bytecomp_c_co | { read _ c; echo $c; })
     clibs="$clibs -framework Cocoa -framework OpenGL"