+%setup -qc
+%{__mv} mksh/* .; rmdir mksh
+
+%patch0 -p1
+%patch1 -p1
+
+# sed rules instead of patch (needed update for every release)
+sed -i -e 's|\(#define.*MKSH_VERSION.*\)"|\1 @DISTRO@"|g' sh.h
+sed -i -e 's|\(@(#)MIRBSD KSH.*\)|\1 @DISTRO@|g' check.t
+
+# fill distro
+sed -i -e 's#@DISTRO@#PLD/Linux 3.0#g' check.t sh.h
+# sanity checks
+grep PLD/Linux check.t || exit 1
+grep PLD/Linux sh.h || exit 1
+
+# we'll need this later due to -DMKSH_GCC55009
+cat >rtchecks <<'EOF'
+typeset -i sari=0
+typeset -Ui uari=0
+typeset -i x=0
+print -r -- $((x++)):$sari=$uari.
+let --sari --uari
+print -r -- $((x++)):$sari=$uari.
+sari=2147483647 uari=2147483647
+print -r -- $((x++)):$sari=$uari.
+let ++sari ++uari
+print -r -- $((x++)):$sari=$uari.
+let --sari --uari
+let 'sari *= 2' 'uari *= 2'
+let ++sari ++uari
+print -r -- $((x++)):$sari=$uari.
+let ++sari ++uari
+print -r -- $((x++)):$sari=$uari.
+sari=-2147483648 uari=-2147483648
+print -r -- $((x++)):$sari=$uari.
+let --sari --uari
+print -r -- $((x++)):$sari=$uari.
+EOF
+
+cat >rtchecks.expected <<'EOF'
+0:0=0.
+1:-1=4294967295.
+2:2147483647=2147483647.
+3:-2147483648=2147483648.
+4:-1=4294967295.
+5:0=0.
+6:-2147483648=2147483648.
+7:2147483647=2147483647.
+EOF