[beast: 13/41] MISC: make-deb.sh: adjust the DEBIAN/postinst binary path to include versioning

[Tim Janik <timj src gnome org>]

commit 48b8abfec564aa429ff67eea1e20d44cd6cb6449
Author: Tim Janik <timj gnu org>
Date:   Tue Jun 13 23:02:22 2017 +0200

    MISC: make-deb.sh: adjust the DEBIAN/postinst binary path to include versioning
    
    Signed-off-by: Tim Janik <timj gnu org>

 misc/make-deb.sh     |   35 +++++++++++++++++++++++++++++++++--
 misc/postinst-deb.sh |   32 --------------------------------
 2 files changed, 33 insertions(+), 34 deletions(-)
---
diff --git a/misc/make-deb.sh b/misc/make-deb.sh
index f3a4b7c..2a968f5 100755
--- a/misc/make-deb.sh
+++ b/misc/make-deb.sh
@@ -77,8 +77,9 @@ echo "PKG_CONFIG_PATH=$PKG_CONFIG_PATH"
 echo "AIDACC_DESTDIR=$AIDACC_DESTDIR"
 echo "DEBIAN=$DEBIAN"
 
+BEASTEXE=$BEASTDIR/bin/beast
 REBUILD=false
-[ -x $DESTDIR/opt/bin/beast ] || REBUILD=true
+[ -x $DESTDIR/$BEASTEXE ] || REBUILD=true
 if $REBUILD ; then
 
     # clone/update and build rapicorn
@@ -93,6 +94,7 @@ if $REBUILD ; then
     git_clone $R beast
     build_checked beast ./autogen.sh
 fi
+[ -x $DESTDIR/$BEASTEXE ] || die "failed to build Beast executable: $BEASTEXE"
 
 NAME="beast"
 VERSION=$(./tmpdeb/beast/misc/mkbuildid.sh -p)
@@ -158,7 +160,36 @@ gzip -9 $DEBCHANGELOG
 cp debian/copyright $DEBDOCDIR
 
 # DEBIAN/postinst
-cp misc/postinst-deb.sh $DEBIAN/postinst
+cat <<-\__EOF |
+       #!/bin/bash
+       set -e
+       set_perms() {
+         USER="$1"; GROUP="$2"; MODE="$3"; FILE="$4"
+         # https://www.debian.org/doc/debian-policy/ch-files.html#s10.9.1
+         if ! dpkg-statoverride --list "$FILE" > /dev/null ; then
+           chown "$USER:$GROUP" "$FILE"
+           chmod "$MODE" "$FILE"
+         fi
+       }
+       # https://www.debian.org/doc/debian-policy/ch-maintainerscripts.html#s-mscriptsinstact
+       case "$1" in
+         configure)
+           # https://www.debian.org/doc/debian-policy/ch-files.html#s-permissions-owners
+           set_perms root root 4755 @BEASTEXE@ # wrapper which does renice -20
+           # https://www.debian.org/doc/debian-policy/ch-sharedlibs.html#s-ldconfig
+           ldconfig
+           ;;
+         abort-upgrade|abort-remove|abort-deconfigure)
+           ;;
+         *)
+           # unkown action
+           exit 1
+           ;;
+       esac
+       exit 0
+__EOF
+sed "s|@BEASTEXE@|$BEASTEXE|g" > $DEBIAN/postinst
+chmod +x $DEBIAN/postinst
 
 # https://wiki.debian.org/ReleaseGoals/LAFileRemoval
 find $DEBIAN/../ -name '*.la' -delete